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  • Chemistry  (17,967)
  • Environment  (1,190)
  • Fluid Mechanics and Thermodynamics
  • 2020-2022  (2,050)
  • 1955-1959  (13,396)
  • 1945-1949  (3,703)
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  • 101
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    Work plan for analytical support of an integrated ecosystem assessment of the California Current Large Marine Ecosystem, FY11 ‐ FY13 (2021)
    NOAA/National Centers for Coastal Ocean Science | Silver Spring, MD
    In:  Charles.Menza@noaa.gov | http://aquaticcommons.org/id/eprint/14845 | 403 | 2014-03-04 23:46:48 | 14845 | United States National Ocean Service
    Details
    Publication Date: 2021-06-26
    Description: NOAA/NCCOS is conducting the following work for the NOAA California Current Integrated Ecosystem Assessment, in support of the NOAA/NMFS Northwest Fisheries Science Center.
    Keywords: Ecology ; Environment ; Fisheries ; Management
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 2
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  • 102
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    Photolysis of iron–siderophore chelates promotes bacterial–algal mutualism (2021)
    In:  http://aquaticcommons.org/id/eprint/14858 | 403 | 2014-03-07 19:40:13 | 14858 | United States National Ocean Service
    Details
    Publication Date: 2021-06-26
    Description: Marine microalgae support world fisheries production and influence climate through various mechanisms. They are also responsible for harmful blooms that adversely impact coastal ecosystems and economies. Optimal growth and survival of many bloom-forming microalgae, including climatically important dinoflagellates and coccolithophores, requires the close association of specific bacterial species, but the reasons for these associations are unknown. Here, we report that several clades of Marinobacter ubiquitously found in close association with dinoflagellates and coccolithophores produce an unusual lower-affinity dicitrate siderophore, vibrioferrin (VF). Fe-VF chelates undergo photolysis at rates that are 10–20 times higher than siderophores produced by free-living marine bacteria, and unlike the latter, the VF photoproduct has no measurable affinity for iron. While both an algal-associated bacterium and a representative dinoflagellate partner, Scrippsiella trochoidea, used iron from Fe-VF chelates in the dark, in situ photolysis of the chelates in the presence of attenuated sunlight increased bacterial iron uptake by 70% and algal uptake by 〉20-fold. These results suggest that the bacteria promote algal assimilation of iron by facilitating photochemical redox cycling of this critical nutrient. Also, binary culture experiments and genomic evidence suggest that the algal cells release organic molecules that are used by the bacteria for growth. Such mutualistic sharing of iron and fixed carbon has important implications toward our understanding of the close beneficial interactions between marine bacteria and phytoplankton, and the effect of these interactions on algal blooms and climate.
    Keywords: Chemistry ; Oceanography
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 17071-17076
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  • 103
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    Chemical contamination in southwest Puerto Rico: a survey of contaminants in the coral Porites astreoides (2021)
    In:  tony.pait@noaa.gov | http://aquaticcommons.org/id/eprint/14860 | 403 | 2014-03-13 22:50:39 | 14860 | United States National Ocean Service
    Details
    Publication Date: 2021-06-27
    Description: Coral ( Porites astreoides ) from eight sites in southwest Puerto Rico were analyzed for approximately 150 chemical contaminants, to provide a preliminary characterization of environmental contamination in the corals, and assess the relationships between chemical contamination in corals and adjacent sediments. Overall, the concentration of PAHs (polycyclic aromatic hydrocarbons) and PCBs (polychlorinated biphenyls) detected in the limited number of coral samples collected were comparable to concentrations found in sediments. However, the concentration of a chemical contaminant (e.g., PAHs) in the corals at a site was often different from what was found in adjacent sediments. The level of PCBs and DDT (dichlorodiphenyltrichloroethane) in the corals appeared higher just outside of Guanica Bay, and there was some evidence of a downstream concentration gradient for these two contaminant classes. The trace elements copper and zinc were frequently detected in Porites astreoides , and the concentrations were usually comparable to those found in adjacent sediments. Chromium was an exception in that it was not detected in any of the coral samples analyzed, although it was detected in all of the sediment samples.
    Keywords: Chemistry ; Management ; Pollution
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 191-203
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  • 104
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    Chemical contaminants in the coral Porites astreoides from southwest Puerto Rico (2021)
    NOAA/National Centers for Coastal Ocean Science | Silver Spring, MD
    In:  http://aquaticcommons.org/id/eprint/14868 | 403 | 2014-03-06 18:57:33 | 14868 | United States National Ocean Service
    Details
    Publication Date: 2021-06-27
    Description: This report presents an initial characterization of chemical contamination in coral tissues (Porites astreoides) from southwest Puerto Rico. It is the second technical report from a project to characterize chemical contaminants and assess linkages between contamination and coral condition. The first report quantified chemical contaminants in sediments from southwest Puerto Rico. This document summarizes the analysis of nearly 150 chemical contaminants in coral tissues. Although only eight coral samples were collected, some observations can be made on the correlations between observed tissue and sediment contaminant concentrations. The concentrations of polycyclic aromatic hydrocarbons (PAHs), typically associated with petroleum spills and the combustion of fossil fuels, and polychlorinated biphenyls (PCBs) in the coral tissues were comparable to concentrations found in adjacent sediments. However, the concentration of a chemical contaminant (e.g., PAHs) in the coral tissues at a particular site was not a good predictor of what was in the adjacent sediments. In addition, the types of PAHs found in the coral tissues were somewhat different (higher ratios of alkylated PAHs) than in sediments. The levels of PCBs and DDT in coral tissues appeared higher just outside of Guanica Bay, and there was evidence of a downstream concentration gradient for these two contaminant classes. The trace elements copper, zinc and nickel were frequently detected in coral tissues, and the concentration in the corals was usually comparable to that found in adjacent sediments. Chromium was an exception in that it was not detected in any of the coral tissues analyzed. Additional work is needed to assess how spatial patterns in chemical contamination affect coral condition, abundance and distribution.
    Description: National Status and Trends Program for Marine Environmental Quality
    Keywords: Chemistry ; Management ; Pollution
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 32
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  • 105
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    Using wildlife activity and antibiotic resistance analysis to model bacterial water quality in coastal ponds (2021)
    NOAA/National Centers for Coastal Ocean Science | Charleston, SC
    In:  http://aquaticcommons.org/id/eprint/14864 | 403 | 2014-03-06 18:36:18 | 14864 | United States National Ocean Service
    Details
    Publication Date: 2021-06-27
    Description: Models that help predict fecal coliform bacteria (FCB) levels in environmental waters can be important tools for resource managers. In this study, we used animal activity along with antibiotic resistance analysis (ARA), land cover, and other variables to build models that predict bacteria levels in coastal ponds that discharge into an estuary. Photographic wildlife monitoring was used to estimate terrestrial and aquatic wildlife activity prior to sampling. Increased duck activity was an important predictor of increased FCB in coastal ponds. Terrestrial animals like deer and raccoon, although abundant, were not significant in our model. Various land cover types, rainfall, tide, solar irradiation, air temperature, and season parameters, in combination with duck activity, were significant predictors of increased FCB. It appears that tidal ponds allow for settling of bacteria under most conditions. We propose that these models can be used to test different development styles and wildlife management techniques to reduce bacterial loading into downstream shellfish harvesting and contact recreation areas.
    Keywords: Chemistry ; Ecology ; Management ; Pollution
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 32
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  • 106
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    Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys (2021)
    NOAA National Marine Fisheries Service, Southeast Fisheries Science Center | Pascagoula, MS
    In:  http://aquaticcommons.org/id/eprint/15062 | 9717 | 2014-05-21 21:19:38 | 15062 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-07-02
    Description: The Gulf of Mexico (GMx) is a subtropical marginal sea of the western North Atlantic Ocean with a diverse cetacean community. Ship-based, line-transect abundance surveys were conducted in oceanic waters (〉200 m deep) of the northern GMx within U.S. waters (380,432 square km) during summer 2003 and spring 2004. Data from these surveys were pooled and minimum abundance estimates were based on 10,933 km of effort and 433 sightings of at least 17 species.The most commonly sighted species (number of groups) were pantropical spotted dolphin, Stenella attenuata (115); sperm whale, Physeter macrocephalus (85); dwarf/pygmy sperm whale, Kogia sima/breviceps (27); Risso’s dolphin, Grampus griseus (26); and bottlenose dolphin, Tursiops truncatus (26). The most abundant species (number of individuals; coefficient of variation) were S. attenuata (34,067; 0.18); Clymene dolphin, S. clymene (6,575; 0.36); T. truncatus (3,708; 0.42); and striped dolphin, S. coeruleoalba (3,325; 0.48). The only largewhales sighted were P. macrocephalus (1,665; 0.20) and Bryde’s whale, Balaenoptera edeni (15; 1.98). Abundances for other species or genera ranged from 57 to 2,283 animals. Cetaceanswere sighted throughout the oceanic northern GMx, and whereas many species were widely distributed, some had more regional distributions. Compared to abundance estimates for this area based on 1996-2001 surveys, the estimate for S. attenuata was significantly smaller (P 〈0.05) and that for the spinner dolphin, S. longirostris, appeared much smaller. Also, P. macrocephalus estimates were based on less negatively biased estimates of group-size using 90-minute counts during 2003 and 2004.
    Keywords: Biology ; Environment ; Oceanography
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 27
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  • 107
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    Elemental signatures in otoliths of larval walleye pollock (Theragra chalcogramma) from the northeast Pacific Ocean (2021)
    In:  http://aquaticcommons.org/id/eprint/15087 | 403 | 2014-05-28 03:22:35 | 15087 | United States National Marine Fisheries Service
    Details
    Publication Date: 2021-07-02
    Description: The population structure of walleye pollock (Theragrachalcogramma) in the northeastern Pacific Ocean remains unknown. We examined elemental signatures in the otoliths of larval and juvenile pollock from locations in the BeringSea and Gulf of Alaska to determine if there were significant geographic variations in otolith compositionthat may be used as natural tags of population affinities. Otoliths were assayed by using both electron probemicroanalysis (EPMA) and laser ablation inductively coupled plasma mass spectrometry (ICP-MS). Elements measured at the nucleus of otoliths by EPMA and laser ablation ICP-MS differed significantly among locations. However, geographicgroupings identified by a multivariate statistical approach from EPMA and ICP-MS were dissimilar, indicating that the elements assayed by each technique were controlled by separate depositional processes within the endolymph. Elemental profiles across the pollock otoliths were generally consistent at distances up to 100 μm from the nucleus. At distances beyond 100 μm, profiles varied significantly but were remarkably consistent among individuals collected at each location. These data may indicate that larvae from various spawning locations are encountering water masses with differing physicochemicalproperties through their larval lives, and at approximately the same time. Although our results are promising, we require a better understanding of the mechanisms controlling otolith chemistry before it will be possibleto reconstruct dispersal pathways of larval pollock based on probe-based analyses of otolith geochemistry. Elemental signatures in otoliths of pollock may allow for the delineation of fine-scale population structure in pollock that has yet to be consistently revealed by using population genetic approaches.
    Keywords: Chemistry ; Fisheries
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 604-616
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  • 108
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    Coastal climate reflected in carbon-13/carbon-12 ratio of organic carbon in varved sediment from Santa Barbara basin (2021)
    In:  http://aquaticcommons.org/id/eprint/15617 | 8 | 2014-11-10 23:13:07 | 15617
    Details
    Publication Date: 2021-07-09
    Description: A 1844-1987 time-series of carbon stable isotope ratios from dated sedimentary total organic carbon from the center of the Santa Barbara basin is compared with historical climate and oceanographic records. Carbon derived from carbon-13-depleted phytoplankton and carbon-13-enriched kelp appear responsible for a large part of the isotopic variance in sedimentary total organic carbon. El Niño/Southern Oscillation events are recorded by the isotopic response of marine organic carbon in sediments.
    Keywords: Chemistry ; Earth Sciences ; Oceanography ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 157-163
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  • 109
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    Late Holocene environmental variability in the upper San Francisco Estuary as reconstructed from tidal marsh sediments (2021)
    In:  http://aquaticcommons.org/id/eprint/15759 | 8 | 2014-11-26 21:33:39 | 15759
    Details
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):Tidal marsh sediments collected from Browns Island in the lower Sacramento/San Joaquin Delta, California, are used to reconstruct environmental variability over the past 6.8 ka. Calibrated radiocarbon dates provide chronostratigraphic control. Trace metal analyses, grain-size variability, organic content, and macrofossils are used to define short- and long-term variations in relative salinity and inundation frequency. Aggradation began in subtidal fresh water conditions about 6.8 ka. Subtidal aggradation of clayey silts continued until about 6.3 ka, when conditions shifted toward a lower intertidal brackish marsh environment. By 5.1 ka, a brackish marsh plain had evolved, with surface water freshening after 4.1 ka. Conditions returned to brackish similar to the present after 2.3 ka.
    Keywords: Earth Sciences ; Environment ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 185-198
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  • 110
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    Paleorecords of interdecadal variability from mid-latitude varved sediments and tropical corals of the eastern Pacific [abstract] (2021)
    In:  http://aquaticcommons.org/id/eprint/15771 | 8 | 2014-12-01 20:45:58 | 15771
    Details
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):Reconstruction of proxy variables from massive corals and varved sediments of the eastern Pacific allow us to compare variability in the ocean climate from equatorial and mid-latitude sites for a significantly longer period than is available from the instrumental record.
    Keywords: Chemistry ; Earth Sciences ; Oceanography ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
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    Format: 47-47
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  • 111
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    Chronic and catastrophic influences of the environment on the population dynamics of the common fishes [abstract] (2021)
    In:  http://aquaticcommons.org/id/eprint/15786 | 8 | 2014-12-04 20:06:15 | 15786
    Details
    Publication Date: 2021-07-10
    Description: EXTRACT (SEE PDF FOR FULL ABSTRACT):Seasonal, interannual, decadal and centennial influences on population dynamics have been described for several species. It now seems possible to interpret environmental changes that initiate population change ...
    Keywords: Ecology ; Environment ; Oceanography ; PACLIM
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 123-123
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  • 112
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    Population studies of three species of ribbon fishes off the Bombay coast (2021)
    In:  http://aquaticcommons.org/id/eprint/15901 | 12051 | 2015-01-01 09:28:57 | 15901 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: Populations of three species of ribbonfishes (Trichiurus lepturus, Lepturacanthus savala, Euplerogrammus muticus) off the Bombay coast were studied for meristic and morphometric characters. All meristic characters except pectoral fin ray count, showed interspecific as well as intraspecific variations. Regression studies for various characters showed a linear relationship and high degree of correlation to the total and head lengths. Variations between the sexes were found insignificant. A comparison of the mean ratios of body parts of samples from Bombay and Mandapam showed significant variations for L. savala and E. muticus.
    Keywords: Biology ; Environment ; meristic counts ; Lepturacanthus savala ; Trichiurus lepturus ; marine ; Bombay ; Maharashtra ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 51-58
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  • 113
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    Preliminary observations on the availability of Tor tor (Hamilton) fry in the River Narmada near Hoshangabad, Madhya Pradesh (2021)
    In:  http://aquaticcommons.org/id/eprint/15903 | 12051 | 2015-01-01 09:30:08 | 15903 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: Collection of mahseer (Tor tor) fry during December to January from three centres of the river Narmada near Hoshangabad, (Joshipur ghat, Dungerwada ghat and Kherra ghat) using a special type of fry collection net is described. The physical features and physico-chemical conditions of the collection sites are also dealt with.
    Keywords: Biology ; Environment ; Fisheries ; fry ; seed collection ; Tor tor ; freshwater ; Narmada river ; Hoshangabad ; Madhya Pradesh ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 63-66
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  • 114
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    Environmental inventory and the distribution of inorganic nutrients in a tropical estuary of the south-west coast of India (2021)
    In:  http://aquaticcommons.org/id/eprint/15927 | 12051 | 2015-01-16 08:51:38 | 15927 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: Dissolved nutrients (PO sub(4)-P, NO sub(3)-N, NO sub(2)-N and SiO sub(4)-Si) estimated in the surface and bottom waters of five selected stations of the Paravur Lake, Kerala, India, during February 1987 to January 1988 revealed distinct seasonal variations. Rainfall and land drainage play significant roles in the nutrient economy, particularly NO sub(3)-N and SiO sub(4)-Si, of this water body. Abnormally high values of PO sub(4)-P indicated extremely polluted condition at the wetting zone of the lake during the premonsoon season. SiO sub(4)-Si showed significant negative relationship with salinity.
    Keywords: Biology ; Environment ; estuaries ; nutrients (mineral) ; seasonal variations ; temporal distribution ; distribution ; brackish ; Southern-Western India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 59-68
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  • 115
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    Tidal and diel influence on zooplankton occurrence in the Mandovi estuary, Goa (2021)
    In:  http://aquaticcommons.org/id/eprint/15900 | 12051 | 2015-01-01 09:27:49 | 15900 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: Distribution and abundance of zooplankton over the tidal cycle were studied in the Mandovi estuary, Goa, during August and December 1971 and May 1972. Tide induced salinity fluctuations were obvious with high values during spring tides. Salinity was low during August, apparently due to precipitation and land run off but increased subsequently. The mean biomass values for the day and night collections were 13.6 and 19.8 ml/100 m super(3) respectively. Occurrence of most of the zooplankton taxa and species was related to diel rhythm and tidal oscillations. However, overall mean zooplankton standing stock at both the stations were same (16.3 ml/100 m super(3)) indicating that estuarine zooplankton maintained their position during tidal exchanges. Variations in occurrence of common groups and species of zooplankton over the tidal cycle are discussed.
    Keywords: Biology ; Environment ; tidal effects ; population density ; diurnal variations ; population dynamics ; brackish ; Mandovi estuary ; Goa ; India
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 39-49
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  • 116
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    Seasonal variation in the proximate composition of rock oyster Saccostrea cucullata from Bombay coast (2021)
    In:  http://aquaticcommons.org/id/eprint/15906 | 12051 | 2015-01-03 09:43:46 | 15906 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: Changes in proximate composition of soft tissue of rock oyster Saccostrea cucullata inhabiting a polluted station at Bandra (stn. B) and a relatively clean area at Mudh Island (stn. M) were studied. An average protein content of 48.88 plus or minus 3.73 and 53.68 plus or minus 3.59% were recorded respectively for oysters from stns. M and B and the difference was significant. Mean carbohydrate content in oysters from stn. M amounted to 14.69 plus or minus 3.22 whereas at stn. B it was 8.70 plus or minus 1.61 and the difference was found highly significant. However, appreciable variation between stations was not observed in lipid and carbon content in oysters. Suitable periods for harvesting of these organisms are suggested.
    Keywords: Biology ; Environment ; Pollution ; biochemical composition ; carbohydrates ; seasonal variations ; histology ; Saccostrea cucullata ; marine ; Bombay ; Maharashtra ; India
    Repository Name: AquaDocs
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    Format: application/pdf
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    Format: 19-24
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  • 117
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    Assessment of siltation rate and sediment transport in Bombay harbour based on Cesium-137 distribution (2021)
    In:  http://aquaticcommons.org/id/eprint/15883 | 12051 | 2014-12-31 13:15:00 | 15883 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: Low level aqueous radioactive wastes from the nuclear complex at Trombay are discharged into the Bombay harbour. Of the 6 principal radionuclides comprising the discharge, cesium-137 is most predominantly taken up by silt from the sea water. Isoactivity contours show that activity levels just off the point of discharge, and further south to Pir Pau, were between 50 and 100 pCi/g. Activity in the main channel of the harbour remained below 10 pCi/g, while further north (below the Thane Creek bridge) it was around 20 pCi/g. Activity in the top 6 cm of a core off Trombay naval jetty was 〈5 pCi/g, reaching a maximum of 178 pCi/g at 14cm below the surface. Thereafter, it tapered off to 5 pCi/g down to a metre.
    Keywords: Environment ; Pollution ; sediment transport ; radioactive wastes ; silting ; marine ; Bombay ; Maharashtra ; India
    Repository Name: AquaDocs
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    Format: 59-67
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  • 118
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    Distribution of phytoplankton off Mithapur (Gujarat) (2021)
    In:  http://aquaticcommons.org/id/eprint/15911 | 12051 | 2015-01-03 09:46:52 | 15911 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: The area off Mithapur, Gujarat, India, is moderately rich in phytoplankton. The peak in phytoplankton population (av. 7.86 x 10 super(4)/l) was recorded in March. The average count of 0.71 x 10 super(4)/l observed in April was very low and later increased to 3.76 x 10 super(4)/l in December. Fifty-two species were recorded from the area. The most common species were Nitzschia closterium, N. pungens, N. seriata, N. sigma, Chaetoceros simplex, C. difficilis and C. sociale. The importance of Nitzschia spp as indicators of organically polluted environment was discussed.
    Keywords: Biology ; Environment ; pollution indicators ; geographical distribution ; marine ; Mithapur ; Gujarat ; India
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
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    Format: 49-57
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  • 119
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    Toxicity of some organic biocides to exotic carp fingerlings Hypophthalmichthys molitrix (C and V) (2021)
    In:  http://aquaticcommons.org/id/eprint/15913 | 12051 | 2015-01-03 09:48:44 | 15913 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: A bioassay study was conducted using three organic pesticides to determine their comparative toxicity to fingerlings of Hypophthalmichthys molitrix. There was wide variation in the toxicity of different pesticides with 24 hr LC sub(50) values ranging from 0.000403 to 0.294 mg/l. Endosulfan appeared to be the most toxic, whereas BHC was the least.
    Keywords: Biology ; Environment ; Pollution ; organic compounds ; toxicity tests ; bioassays ; fingerlings ; Hypophthalmichthys molitrix ; freshwater
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 65-68
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  • 120
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    Seasonal variation in the physico-chemical properties of Rushikulya estuary and its effect on the occurrence of Chanos fry (2021)
    In:  http://aquaticcommons.org/id/eprint/15928 | 12051 | 2015-01-16 08:52:26 | 15928 | Indian Fisheries Association
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    Publication Date: 2021-07-11
    Description: Seasonal variation in some physico-chemical properties of Rushikulya estuary was studied. The surface water temperature varied from 20 to 34.5 degree C, the transparency of the water from 6.3 to 12 cm, the salinity from 28.3 to 32.8 % and the pH from 6.77 to 7.35. The transparency and salinity showed bimodal distribution. Occurrence of the Chanos fry were correlated to it.
    Keywords: Chemistry ; Environment ; temperature data ; nursery grounds ; seasonal variations ; salinity data ; estuary ; Chanos chanos ; marine ; Rushikulya river ; Odisha ; Orissa ; India
    Repository Name: AquaDocs
    Type: article
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    Format: application/pdf
    Format: 69-71
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  • 121
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    Sterol composition of marine algae from Karachi coast of Arabian Sea (2021)
    In:  http://aquaticcommons.org/id/eprint/16031 | 12051 | 2015-01-29 11:03:37 | 16031 | University of Karachi. Marine Reference Collection Centre
    Details
    Publication Date: 2021-06-25
    Description: During the course of chemical investigation of marine algae collected from Karachi coast of Arabian Sea, five sterols named as sarangosterol(1), 23-methyl cholesta-5, 25-dien-3ß-ol(2) from Endarachne binghamiae (brown alga), sargasterol(3) from Dictyota indica (brown alga), cholesterol(4) from Laurencia obtusa (red alga) and clerosterol(5) from Codium iyengarii (green alga) have been isolated. Their structures were elucidated with the help of spectroscopic means.
    Keywords: Chemistry ; sterols ; marine algae ; Endarachne binghamiae ; Dictyota indica ; Laurenica obtusa ; Codium iyengarii ; Karachi ; Pakistan ; Arabian Sea
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    Studies on the status of pollution in certain estuarine areas in Kakinada (2021)
    In:  http://aquaticcommons.org/id/eprint/15994 | 12051 | 2015-01-19 16:01:03 | 15994 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-11
    Description: The BOD levels and saprotrophication of 2 stations in an estuarine habitat at Kakinada India, was studied during one full tidal cycle. Both the stations were found to be heavily polluted by sewage with BOD values ranging between 10.8 and 12.8 ppm at the commercial canal (station 1) and between 4.8 and 8.8 ppm at the mangrove creek (station 2). Tides did not seem to have much influence on the dilution of the pollutants. Based on planktonic indicator species observed and saprobity index which worked out to be 2.75, both the sampling areas are considered as heavily polluted alpha-mesosaprobic zones.
    Keywords: Environment ; Pollution ; estuaries ; pollution monitoring ; biochemical oxygen demand ; dilution ; pollution dispersion ; brackish ; Kakinada ; East Godavari district ; Andhra Pradesh ; India
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    Format: 441-448
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    Organic carbon in the sediments of the lower reaches of Periar River (2021)
    In:  http://aquaticcommons.org/id/eprint/16018 | 12051 | 2015-01-24 15:22:42 | 16018 | Indian Fisheries Association
    Details
    Publication Date: 2021-07-12
    Description: Sediments are indicators of the quality of water overlying them and hence, useful in the assessment of environmental pollution. Temporal and spatial variations in sediment characteristics and organic carbon content from 9 stations in the lower reaches of Periyar River an area in Cochin Backwater, India which is polluted from different sources were studied for one year during 1981. Variations in colour and texture of sediments were brought about by changes in the grain size and state of oxidation of organic matter. The colour of the sediment varied from greyish black at stations 1 and 2, brownish at station 3, black at stations 4 to 8 and reddish at station 9. Organic carbon and sediment texture showed a direct relationship at all stations except at station 9 where organic carbon content showed an irregular pattern. Overall range of organic carbon content was between 1.19 and 29.6 mg.g super(-1). The mean organic carbon of the stations ranged between 6.8 mg.g super(-1) (station 5) and 20.8 mg.g super(-1) (station 9). On the whole temporal variations were considerable with high values at station 9 and low values at station 5. Fluctuations were more at stations 6, 7 and 8.
    Description: Page heading has Journal of the Fisheries Association but it is Journal of the Indian Fisheries Association
    Keywords: Biology ; Environment ; Pollution ; organic carbon ; backwaters ; freshwater pollution ; brackish ; Periyar river ; Cochin ; Kerala ; India
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    Format: 61-68
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    Chemical constituents of the fruit and hypocotyl of mangrove, Ceriops tagal (2021)
    In:  http://aquaticcommons.org/id/eprint/16092 | 12051 | 2019-06-11 14:53:07 | 16092 | University of Karachi. Marine Reference Collection and Resource Centre
    Details
    Publication Date: 2021-06-27
    Description: The fruit and hypocotyl of Ceriops tagal were analysed for their organic and inorganic constituents. They showed almost similar characteristics in major metabolites and high molecular weight elements. Both the samples had high concentration of the carbohydrates and crude fibre and very low in fat and protein. The ash was rich in NA, K and Ca. Some essential free amino acids and sugars were also present. Calorific values were found fairly high. There is a strong possibility of using fruit and hypocotyl of C. tagal as a source for supplementing animal feed.
    Keywords: Chemistry ; mangroves ; Ceriops tigal ; fruit ; hypocotyl ; chemical constituents
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    Format: 119-122
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    Sampling of frozen prawns for bacteriological estimation (2021)
    In:  http://aquaticcommons.org/id/eprint/16143 | 12051 | 2015-02-09 08:09:11 | 16143 | Society of Fisheries Technologists, India
    Details
    Publication Date: 2021-06-29
    Description: Experiments were conducted to study the significance of difference between samples taken from the surface and interior of a frozen shrimps block, as well as to determine the size of sample necessary to represent the whole block, with respect to bacterial count determination. The results showed that the surface samples and interior samples did not differ significantly at 5% level of significance and that the minimum quantity representative of the block was 21-26 gms in the case of a block weighing about 1300 gms. The procedure adopted for taking the bacterial count was the normal standard plate count method.
    Keywords: Chemistry ; Fisheries ; bacteriological estimation ; frozen pranwns
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 168-170
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    Some potential occupational and environmental hazards associated with fish pond production in Nigeria (2021)
    In:  http://aquaticcommons.org/id/eprint/4035 | 424 | 2011-09-29 16:40:09 | 4035 | Fisheries Society of Nigeria
    Details
    Publication Date: 2021-06-28
    Description: The paper highlights the concept of information and the significance of environmental and occupational hazards associated with pond fish production in Nigeria and discuss the possible options for the ways forward. The major raw material used in fish production system is the organic manure (cow dung, poultry droppings, porcine manure etc) that serves as substrate for heterotrophic production of bacteria and protozoa, which act as food for zooplankton and the fish. The pathogenic organisms (viruses, bacteria, protozoa's, and parasites), are noted for the potential hazard to the fish handlers and consumers. Nine species from seven genera of bacteria associated with fish diseases are found to have association with diseases of human such as typhoid fever, bacillary dysentery and other gastrointestinal tract related problems. Also the environmental contaminants in pond fish production become important because of its significance to consumers' acceptance of the fish products
    Keywords: Health ; Pollution ; Aquaculture ; Environment ; Nigeria ; aquaculture products ; aquaculturists ; biological pollutants ; fertilizers ; fish ponds ; hazards ; human diseases ; microbial contamination ; organic wastes ; pathogenic bacteria ; pathogens ; quality control ; Bacteria Protozoa ; Viruses
    Repository Name: AquaDocs
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    Format: 264-272
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    Vergleich zwischen Fischfilet und Fischfiletsägemehl unter Anwendung der dynamischen Leistungskompensations-Differenz-Kalorimetrie (2021)
    In:  reinhard.schubring@mri.bund.de | http://aquaticcommons.org/id/eprint/4296 | 1240 | 2012-11-10 20:00:36 | 4296 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; chemical analysis ; fishery products ; processing ; quality evaluation
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    Format: application/pdf
    Format: 187-193
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    Strontium-90 in Fischen des Eingangs zur Barentssee (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4306 | 1240 | 2012-11-10 20:10:32 | 4306 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-01
    Description: Über den aktuellen Radioaktivitätsgehalt des 137Cs im Fleisch von Fischen aus dem Eingangsbereich zur Barentssee in 1992 wurde bereits unmittelbar nach Abschluß der Gammaspektrometrie berichtet. Die nach radiochemischen Aufbereitungen inzwischen ermittelten 90Sr Gehaltswerte werden in diesem Artikel diskutiert.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; Pollution ; Environment ; radiochemistry ; radioactivity ; contamination ; pollution ; fish
    Repository Name: AquaDocs
    Type: article , FALSE
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    Format: application/pdf
    Format: 34-37
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    Biologische und radio ökologische Studien im Versenkungsgebiet für schwach radioaktive Abfälle im Nordostatlantik. Teil I: Biologie (2021)
    In:  michael.vobach@vti.bund.de | http://aquaticcommons.org/id/eprint/4314 | 1240 | 2012-11-10 22:56:26 | 4314 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-06-25
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; biological study ; radioaktivity ; contamination ; pollution ; sinking area ; radioaktive waste
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    Format: application/pdf
    Format: 81-86
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    Biologische und radioökologische Studien im Versenkungsgebiet für schwach radioaktive Abfälle im Nordostatlantik - Teil 2: Radioökologie (2021)
    In:  guenter.kanisch@vti.bund.de | http://aquaticcommons.org/id/eprint/4327 | 1240 | 2012-11-10 20:09:51 | 4327 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; radioactive wastes ; sinking areas ; radioecological studies ; North Atlantic ; bentic organisms ; biota ; marine environment
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 153-160
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    Hilft die Wassererneuerung in der Ostsee dem Dorschbestand ? (2021)
    In:  osf@vti.bund.de | http://aquaticcommons.org/id/eprint/4344 | 1240 | 2012-11-11 16:25:44 | 4344 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; Environment ; water renewal ; Baltic Sea ; cod ; hydrographic data
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 70-71
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    Radioaktivität in Fischen aus der Nordsee (2021)
    In:  guenter.kanisch@vti.bund.de | http://aquaticcommons.org/id/eprint/4339 | 1240 | 2012-11-10 23:04:42 | 4339 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; radioactivity ; fish ; North Sea ; cod ; Pleuronectes platessa ; Clupea harengus ; Merlangius merlangus ; Limanda limanda ; Melanogrammus aeglefinus ; Fish products
    Repository Name: AquaDocs
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    Strontiumaufnahme durch Forelleneier (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4338 | 1240 | 2012-11-10 22:59:06 | 4338 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Biology ; Environment ; radioactivity ; pollution ; aquatic ecosystem ; fish eggs ; load
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: application/pdf
    Format: 31-32
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    Vergleich verschiedener Methoden zur Essigsäure- und Kochsalzbestimmung in Marinaden (2021)
    In:  horst.karl@mri.bund.de | http://aquaticcommons.org/id/eprint/4358 | 1240 | 2012-11-10 23:05:33 | 4358 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; fish products ; chemical analysis ; marinade ; acetic acid ; common salt
    Repository Name: AquaDocs
    Type: article , FALSE
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    Format: 137-143
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    Trendanalyse von Daten aus der Uberwachung von Nordseefisch auf chlorierte Kohlenwasserstoffe (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4368 | 1240 | 2012-11-10 23:06:50 | 4368 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Die internationale Übereinkunft, Einträge in die Nordsee im Zeitraum 1985 bis 1995 deutlich zu verringern war Ergebnis der Nordseeschutzkonferenzen (London, 1987 und La Hague, 1990). Das Institut für Fischereiökologie untersucht im laufenden Joint Monitoring Programme (JI\IP) der Oslo- undPariskommissionen die Belastung von Fischen der Nordsee mit Schadstoffen. Das Vorkommen chlorierter Kohlenwasserstoffe wird u.a. durch Bestimmen der Gehaltswerte von HCB und den Leitkongeneren der PCB in Lebern von Fischen erfaßt.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; HCB ; PCB ; North Sea ; fish ; loaded ; pollution ; monitoring
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 178-181
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    Radioaktivität in Fischen aus dem Eingang zur Barentssee (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4357 | 1240 | 2012-11-10 23:06:12 | 4357 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Fisheries ; Environment ; radioactivity ; fish ; Barentssea ; pollution
    Repository Name: AquaDocs
    Type: article , FALSE
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    Format: application/pdf
    Format: 134-136
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    Krankheiten der Kliesche (Limanda limanda) in einem Klärschlamm-Verklappungsgebietim Firth of Forth (2021)
    In:  thomas.lang@vti.bund.de | http://aquaticcommons.org/id/eprint/4378 | 1240 | 2012-11-11 16:32:37 | 4378 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Health ; Pollution ; Environment ; diseases ; fish ; sawage sludge ; dumping ; affected ; Limand limanda
    Repository Name: AquaDocs
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    Format: application/pdf
    Format: 32-36
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    Phosphor- und Fettgehalte im Muskel von mittelfetten und fetten Seefischarten aus dem Nordatlantik (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4377 | 1240 | 2012-11-10 13:03:23 | 4377 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Über die Phosphorgehalte in Seefischen mit magerem Muskelfleisch und die Gründe für eine möglichst umfassende Kenntnis über diese Gehalte und ihre arten-, orts- und zeitabhängigen Variationen wurde kürzlich berichtet (OEHLENSCHLAGER, 1990). Da auch für die Seefischarten mit mittleren und ausgesprochen hohen Fettgehalten im Muskelnur unvollständige Informationen vorlagen, wurden auch diese Fischarten in die Untersuchungen einbezogen. Die Art der Probenahme, der Probenvorbereitung und der Messung entsprach den bei mageren Fischarten gemachten Angaben. Die Fischproben stammten aus den in Tabelle 1 aufgeführten Reisen mit den Fischereiforschungsschiffen "Walther Herwig" und "Anton Dohrn".
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; fish quality ; marine fish ; North Atlantic ; fat content ; phosphorous content
    Repository Name: AquaDocs
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    Format: 24-31
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    EIFAC - Symposium über sublethale und chronische toxische Effekte von Schadstoffen bei Süßwasserfischen (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4395 | 1240 | 2012-11-11 16:34:52 | 4395 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Fisheries ; Environment ; toxic effects ; pollution ; freshwater fish ; symposium report
    Repository Name: AquaDocs
    Type: article , FALSE
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    Format: application/pdf
    Format: 108-109
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    Zum pH-Wert in fetten und mageren Seefischen (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4402 | 1240 | 2012-11-11 16:46:22 | 4402 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; marine fish ; fish quality ; fat content ; pH value
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 143-146
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    Formaldehydgehalt und Trimethylaminoxid-Demethylase TMAOase)- Aktivität in Filets von Grenadierfisch (Macrourus sp.) aus dem Südatlantik (2021)
    In:  hartmut.rehbein@mri.bund.de | http://aquaticcommons.org/id/eprint/4401 | 1240 | 2012-11-11 16:48:56 | 4401 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; fish quality ; formaldehyde content ; fish filets ; Macrourus holotrachys ; electrophoresis
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 136-143
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    Untersuchung von Schwermetallen und Organohalogenen in Miesmuscheln (Mytilus edulis) aus der inneren Deutschen Bucht (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4404 | 1240 | 2012-11-10 13:01:13 | 4404 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Seit mehreren Jahren werden im Labor für Radioökologie der Gewässer regelmäßig Fische aus der Deutschen Bucht auf die Schwermetalle Kupfer, Zink, Cadmium, Blei, Quecksilber sowie auf die Organohalogene Hexachlorbenzol, Hexachlorcyclohexan und polychlorierte Biphenole untersucht. In dieses Untersuchungsspektrum wurden 1990 Miesmuscheln (Mytilus edulis) aus der inneren Deutschen Bucht einbezogen, um im Rahmen eines deutsch-dänischen Gemeinschaftsprogramms weitergehende Informationen über Schadstoffbelastungen küstennaher Areale zu gewinnen.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; pollution ; North Sea ; heavy metals ; contamination
    Repository Name: AquaDocs
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    Format: 148-153
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    Abschlußkolloquium des ICES/IOC Workshops on Biological Effects of Contaminants in the North Sea am 11. - 13. September 1991 (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4406 | 1240 | 2012-11-11 16:31:05 | 4406 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-02
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Ecology ; Pollution ; Environment ; contamination ; pollution ; North Sea ; chemical analysis ; organisms ; bioassay ; report
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 157-161
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    Schwermetallgehalte in verschiedenen Teilen von Rotbarschfilet (Sebastes marinus L.) (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4420 | 1240 | 2012-11-11 17:31:38 | 4420 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; Pollution ; heavy metal content ; redfish ; fish quality ; chemical analysis
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 32-34
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    Bestimmung der Fischart durch Hochleistungs-Flüssigchromatographie der wasserlöslichen Fischmuskelproteine (2021)
    In:  hartmut.rehbein@mri.bund.de | http://aquaticcommons.org/id/eprint/4419 | 1240 | 2012-11-11 17:35:10 | 4419 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; identification ; fish species ; chromatography ; watersoluble proteins
    Repository Name: AquaDocs
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    Aquarienanlage im Kontrollbereich (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4422 | 1240 | 2012-11-11 16:58:18 | 4422 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Seit Februar betreibt das Labor für Radioökologie der Gewässer für Versuche mit radioaktiven Stoffen an Fischen eine Aquarienanlage mit einem geschlossenen Wasserumlauf im Kontrollbereich (Kulturraum Ost) des Laboratoriums Sülldorf. Erste Untersuchungen an Karpfen (K2) zur Bestimmung der biologischen Halbwertszeit bei der Aufnahme von Phosphor aus dem Futter wurden mit dem radioaktiven Tracer P-32 inzwischen erfolgreich durchgeführt.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Biology ; Environment ; contamination ; radioactivity ; organisms ; feeding ; aquarium tests
    Repository Name: AquaDocs
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    Häufigkeit und Verbreitung verschiedener Parasiten des Nordsee-Wittlings (Merlangius merlangus) (2021)
    In:  thomas.lang@vti.bund.de | http://aquaticcommons.org/id/eprint/4428 | 1240 | 2012-11-11 17:21:18 | 4428 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Ecology ; Health ; Environment ; parasitism ; distribution ; North Sea ; Lernaeocera branchialis ; Plateichthys flesus ; clavella adunca ; Diclidophora merlangi ; Cryptocotyle linga
    Repository Name: AquaDocs
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    Workshop on Biological Effect Monitoring Bremerhaven erfolgreich beendet (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4429 | 1240 | 2012-11-11 17:13:23 | 4429 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Health ; Fisheries ; Pollution ; Environment ; pollution effects ; German Bight ; contamination ; diseases ; deformation ; fish embryo ; pathology
    Repository Name: AquaDocs
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    Selengehalte im Muskel von Seefischen aus dem nordöstlichen Atlantik (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4432 | 1240 | 2012-11-11 17:32:23 | 4432 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; marine fish ; fish products ; selenium ; North East Atlantic ; nutrient contents
    Repository Name: AquaDocs
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    Untersuchungen zur zeitlichen Veränderung der Quecksilbergehalte in Flundern aus der inneren Deutschen Bucht (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4443 | 1240 | 2012-11-11 17:16:32 | 4443 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; Pollution ; mercury content ; flounder ; German Bight ; contaminants ; trend analysis ; marine environment
    Repository Name: AquaDocs
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    Format: 126-129
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    Phosphorgehalte im Muskel von mageren Seefischarten aus dem nördlichen Atlantik (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4450 | 1240 | 2012-11-11 17:30:46 | 4450 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery resarch in 2010
    Keywords: Chemistry ; Fisheries ; fish quality ; phosphates ; marine fish ; North Atlantic ; chemical analysis
    Repository Name: AquaDocs
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    Radioaktivität in Fischen und anderen Organismen der Ostsee (2021)
    In:  guenter.kanisch@vti.bund.de | http://aquaticcommons.org/id/eprint/4451 | 1240 | 2012-11-11 17:18:41 | 4451 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; radioactivity ; contamination marine organism ; Baltic Sea ; radiological impact ; radionuclides
    Repository Name: AquaDocs
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    Belastung der Meeresorganismen in der Nordsee mit polychlorierten Biphenylen (PCB) (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4459 | 1240 | 2012-11-11 17:44:08 | 4459 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; contamination ; marine organism ; North Sea ; chlorinated hydrocarbons ; pollution
    Repository Name: AquaDocs
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    Variation der Gehalte an flüchtigen stickstoffhaltigen Basen und "TVB-N" in Rotbarsch (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4463 | 1240 | 2012-11-11 18:05:01 | 4463 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Die Gehalte an den flüchtigen stickstoffhaltigen Aminen, Amoniak, Dimethylamin (DMA), Trimethylamin (TMA) sowie Trimethylaminoxid (TMAO) und der durch Direktdestillation nach milder Alkalisierung mit Magnesiumoxid erhaltende Wert an sogenanntem flüchtigen Basenstickstoff (TVB-N) wurden an fangfrischen Exemplaren von Rotbarsch untersucht.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; fish quality ; chemical analysis ; redfish ; Sebastes marinus ; Sebastes mentella ; nitrogenous bases
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    Holländische Ergebnisse über die Schadwirkung von Abfällen aus der Titandioxidproduktion in der Nordsee bestätigen Befunde der Bundesforschungsanstalt für Fischerei (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4471 | 1240 | 2012-11-11 18:15:38 | 4471 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; dumoing grounds ; contamination ; environmental effects ; North Sea ; pollution ; Titandioxid ; diseases ; marine organism
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    Kontamination der Kliesche (Limanda limanda) und verschiedener Wirbelloser im internationalen Seeverbrennungsgebiet mit Organochlorverbindungen (2021)
    In:  sf@vti.bund.de | http://aquaticcommons.org/id/eprint/4472 | 1240 | 2012-11-11 17:44:47 | 4472 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Environment ; contamination ; marine organism ; toxic wastes ; pollution ; organochlorine compunds ; North Sea
    Repository Name: AquaDocs
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    Untersuchung von chlorierten Kohlenwasserstoffen (CKW) an Flunder (Platichtbys flesus) und Scholle (Pleuronectes platessa) aus der Nordsee (2021)
    In:  foe@vti.bund.de | http://aquaticcommons.org/id/eprint/4509 | 1240 | 2012-11-11 17:49:50 | 4509 | Bundesforschungsanstalt für Fischerei
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    Publication Date: 2021-07-03
    Description: Im Rahmen des Internationalen Rates für Meeresforschung werden seit 1972 Studien zur Kontamination von Meerestieren der Nordsee mit Schadstoffen erhoben. Eine Intensivierung dieses Unternehmens erfolgte durch die Schaffung eines gemeinsamen internationalen Überwachungsprogrammes (Joint Monitoring Program) durch die Kommission von Oslo und Paris. In diesem Programm sind die Überwchungsgebiete für die Bundesrepublik vorgeschrieben. Auch Species, Anzahl und Gewebe sind festgelegt.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Pollution ; Fisheries ; Environment ; contamination ; marine organism ; North Sea ; international agrements ; chlorinated hydrocarbons
    Repository Name: AquaDocs
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    Chesapeake and Delaware Canal Affects Environmental: presented at American Society of Civil Engineers National Water Resources Engineering Meeting, Phoenix, Arizona, 14 January 1971 (2021)
    University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory | Solomons Island, MD
    In:  http://aquaticcommons.org/id/eprint/4513 | 130 | 2011-09-29 16:18:19 | 4513 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-07-03
    Description: The Chesapeake and Delaware Canal is a man-made waterway connecting the upper Chesapeake Bay with the Delaware Bay. It started in 1829 as a private barge canal with locks, two at the Delaware end, and one at the Chesapeake end. For the most part, natural tidal and non-tidal waterways were connected by short dredged sections to form the original canal. In 1927, the C and D Canal was converted to a sea-level canal, with a controlling depth of 14 feet, and a width of 150 feet. In 1938 the canal was deepened to 27 feet, with a channel width of 250 feet. Channel side slopes were dredged at 2.5:1, thus making the total width of the waterway at least 385 feet in those segments representing new cuts or having shore spoil area dykes rising above sea level. In 1954 Congress authorized a further enlargement of the Canal to a depth of 35 feet and a channel width of 450 feet. (pdf contains 27 pages)
    Description: Philadelphia District of the Corps of Engineers
    Description: University of Maryland Center for Environmental Science Contribution Series # 447
    Keywords: Ecology ; Management ; Fisheries ; Engineering ; Environment ; Dredging ; hydrographic studies ; current ; biological effects ; Chesapeake Bay ; Delaware River ; Salinity ; Non-tidal flow ; tidal velocity ; physical hydrography
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    Niedrige Gehalte an toxischen Schwermetallen in Seefischfilet (Ergebnisse der 81. Reise des FFS "Walther Herwig") (2021)
    In:  J.Oehlenschlaeger@gmx.net | http://aquaticcommons.org/id/eprint/4507 | 1240 | 2012-11-11 18:02:57 | 4507 | Bundesforschungsanstalt für Fischerei
    Details
    Publication Date: 2021-07-03
    Description: Auf der 81. Reise des FFS "Walther Herwig" im März 1987 in die Gewässer östlich Schottlands, Irlands und Nordfrankreichs wurden auf dem Nord-Süd-Schnitt "Westbritische Gewässer-östlicher Kanalausgang nördliche Biskaya" zahlreiche Einzelfischproben für die spätere spurenanalytische Bestimmung der toxischen Schwermetalle Blei und Cadmium gezogen. Bei den Proben handelt es sich um den verzehrbaren Anteil (Muskel, Filet) von kommerziell genutzten Meeresfischen, die den Hols lebend entnommen wurden.
    Description: Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010
    Keywords: Chemistry ; Fisheries ; Pollution ; fish quality ; heavy metals ; Melanogrammus aeglefinus ; chemical analysis ; lead ; cadmium ; consumer protection
    Repository Name: AquaDocs
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    Aquatic insects as target organisms for the study of effects of projected climate change in the British Isles (2021)
    In:  library@fba.org.uk | http://aquaticcommons.org/id/eprint/4526 | 1256 | 2011-09-29 16:16:48 | 4526 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: The chief objectives of this brief review are to collate and synthesise quantitative information on the temperature requirements of aquatic insects, and to identify species, and groups of species, that could be useful indicators of climate change and predictors of the ecological effects of change. It arose from the first phase of the Terrestrial Initiative in Global Environmental Research (TIGER), a five-year, NERC Community Programme on the role of the terrestrial biosphere in the science of global change. This phase involved the identification of criteria for selecting species suitable for the study of effects of projected climate change in the British Isles. Field and laboratory studies are reviewed, and criteria for selection of species for future research are suggested. The literature survey shows that no species of aquatic insect can be found to meet all three criteria, but information on the British stoneflies and their eggs already satisfies two of them.
    Keywords: Ecology ; Environment ; Aquatic insects ; Behaviour ; Climatic changes ; Environmental effects ; Indicator species ; Life cycle ; Temperature preferences ; British isles
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    Ecosystem study Altenwoerth: impacts of a hydroelectric power-station on the River Danube in Austria (2021)
    In:  library@fba.org.uk | http://aquaticcommons.org/id/eprint/4531 | 1256 | 2013-10-27 12:29:10 | 4531 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: The aim of this article is to briefly describe the effects of the Altenwoerth Barrage, on the River Danube, on some physical variables and their consequent effects on water chemistry and the biota of the river. The methods used for biological sampling are summarised, especially those used in the limnological part of the study, and the macroinvertebrate and fish fauna listed. Comparisons are then made between the impounded section of river immediately above the dam and two unimpounded free-flowing sections of the river. Further developments on the Danube are considered.
    Keywords: Ecology ; Environment ; Pollution ; Construction ; Dams ; Ecosystem disturbance ; Ecosystem management ; Ecosystems ; Environmental impact ; Impoundments ; Physicochemical properties ; Sampling ; Water quality
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    The genesis and achievement of a limnologist: George Evelyn Hutchinson, 1903-1991 (2021)
    In:  library@fba.org.uk | http://aquaticcommons.org/id/eprint/4530 | 1256 | 2011-09-29 16:17:07 | 4530 | Freshwater Biological Association
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    Publication Date: 2021-07-04
    Description: An obituary of the limnologist G.E. Hutchinson is given.
    Keywords: Ecology ; Limnology ; Biographies ; Chemistry ; Freshwater ecologists ; Limnology ; Zoology
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    Temperature, organic matter and the sustainability of aquatic systems (2021)
    In:  library@fba.org.uk | http://aquaticcommons.org/id/eprint/4559 | 1256 | 2011-09-29 16:14:56 | 4559 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: Changes in sustainability of aquatic ecosystems are likely to be brought about by the global warming that has been widely predicted. In this article, the effects of water temperature on water-bodies (lakes, oceans and rivers) are reviewed followed by the effects of temperature on aquatic organisms. Almost all aquatic organisms require exogenous heat before they can metabolise efficiently. An organism that is adapted to warm temperatures will have a higher rate of metabolism of food organisms and this increases feeding rate. In addition, an increase in temperature raises the metabolism of food organisms, so food quality can be altered. Where populations have a different tolerance to temperature the result is habitat partitioning. One effect of prolonged high temperature is that it causes water to evaporate readily. In the marine littoral this is not an important problem as tides will replenish water in pools. Small rain pools are found in many tropical countries during the rainy season and these become incompletely dried at intervals. The biota of such pools must have resistant stages within the life cycle that enable them to cope with periods of drying. The most important potential effects of global warming include (i) the alteration of existing coastlines, (ii) the development of more deserts on some land masses, (iii) higher productivity producing higher crop production but a greater threat of algal blooms and (iv) the processing of organic matter at surface microlayers.
    Keywords: Limnology ; Environment ; solar radiation ; temperature effects ; Climatic changes ; Organic matter ; Aquatic ecosystems
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    The importance of periodic droughts for maintaining diversity in the freshwater environment (2021)
    In:  http://aquaticcommons.org/id/eprint/4575 | 1256 | 2011-09-29 16:13:47 | 4575 | Freshwater Biological Association
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    Publication Date: 2021-07-04
    Description: Whereas some species may rely on periodic drought conditions for part of their life histories, or have life strategies suited to exploiting the habitat or changed environmental conditions that are created by drought, for other organisms it is a time of stress. Periodic drought conditions therefore generate a series of waves of colonization and extinctions. Studies on lowland wet grassland, in winterbournes and in the toiche zone of both ponds and rivers, also demonstrate that different organisms are competitively favoured with changing hydrological conditions, and that this process prevents any one species from overwhelming its competitors. Competitive impacts may be inter- and intraspecific. It is therefore apparent that the death of organisms such as adult fish during severe drought conditions, though traumatic for human onlookers and commercial interests, may be merely a regular occurrence to which the ecosystem is adapted. The variability of climatic conditions thereby provides a direct influence on the maintenance of biological diversity, and it is this very biodiversity that provides the ecosystem with the resilience to respond to environmental changes in both the short and the longer term.
    Keywords: Ecology ; Environment ; Droughts ; Ecosystem resilience ; British Isles ; Biodiversity
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    The floods of the Lake District - Part I (2021)
    River Derwent Catchment Board | Penrith, UK
    In:  library@fba.org.uk | http://aquaticcommons.org/id/eprint/4565 | 1256 | 2011-09-29 16:13:01 | 4565 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: This report summarises the annual rainfall of the River Derwent catchment area and examines the floods of 1931 and 1932. The author uses data from the Meteorological Office to examine if the floods were extraordinary and takes into account local lakes in reducing the magnitude of the flood. Areas that are presented in more detail are Bassenthwaite Lake, Thirlmere, Cockermouth, Keswick, Newlands and Coledale Beck. (PDF contains 38 pages)
    Keywords: Atmospheric Sciences ; Limnology ; Environment ; Water levels ; Rainfall ; Floods ; Freshwater lakes ; Rivers ; River discharge
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    Habitat use by 0+ cyprinid fish in the River Great Ouse, East Anglia (2021)
    In:  http://aquaticcommons.org/id/eprint/4576 | 1256 | 2011-09-29 16:13:50 | 4576 | Freshwater Biological Association
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    Publication Date: 2021-07-04
    Description: This study was designed to examine the habitat use of several species of 0+ cyprinid in the regulated River Great Ouse and to determine the reasons for specific habitat use. In general, all fish species were found associated with the marginal zone, with little diel variation. Use of shallow habitats in the presence of macrophytes correlated well with the distribution of zooplankton in the river channel, the preferred food source of 0+ cyprinids. During the early to late larval phase, all species fed upon rotifers and diatoms. Cladocera, particularly Alona spp. and Chydorus spp., and early instar larvae of Chironomidae, then became prevalent in the diet along with small numbers of Copepoda. Models were developed to determine habitat availability over a range of discharges, using the physical habitat simulation (PHABSIM) component of the Instream Flow Incremental Methodology (IFIM). The results of this analysis revealed that habitat suitable for 0+ fishes comprised a relatively small percentage of the main channel and generally decreased with discharge.
    Keywords: Biology ; Limnology ; Environment ; fish larvae ; habitat selection ; life history ; lotic environment ; microhabitats ; modelling ; England ; Great Ouse River
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    A chemical survey of standing waters in south-east England, with reference to acidification and eutrophication (2021)
    In:  http://aquaticcommons.org/id/eprint/4577 | 1256 | 2011-09-29 16:13:53 | 4577 | Freshwater Biological Association
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    Publication Date: 2021-07-04
    Description: This study looks at the distribution and magnitude of acidification and eutrophication in south-east England where there are no natural lakes but a large number of shallow artificial ponds. The study area is defined as the region lying within a 100 km radius of central London but excluding the area within the M25 motorway. Water samples were taken from 120 sites between mid-January and the end of February 1990, with a subsequent monthly survey of a subset of 31 of these waters. Twelve chemical variables were measured in the laboratory using standard techniques. PH values for the full dataset ranged from 3.2 to 8.4, although the majority of sites had pH values in the range 7.0 to 8.5; only five sites had a pH of less than 6.0. The five low pH sites expectedly had low alkalinities and are the only sites with values below 0.1 meq per litre. Concentrations of calcium, sodium, potassium, magnesium, chloride, sulphate and nitrate had normal distributions. The majority of sites had total phosphorus concentrations in the range 25 to 200 mu g per litre, although 10 sites had concentrations above 400 mu g per litre. The low number of acid sites suggests that surface water acidity is not a widespread regional problem in south-east England. However the survey shows that a large number of standing waters in the region have high total phosphorus and nitrate concentrations, and 89% may be considered moderately to considerably eutrophic.
    Keywords: Pollution ; Limnology ; Chemistry ; Acidification ; Eutrophication ; Ponds ; England
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    1976 step in the Pacific climate: forty environmental changes between 1968-1975 and 1977-1984 (2021)
    In:  http://aquaticcommons.org/id/eprint/4562 | 111 | 2014-11-10 21:58:24 | 4562
    Details
    Publication Date: 2021-07-04
    Description: Examination of 40 time series of multidisciplinary environmental variables from the Pacific Ocean and the Americas, collected in 1968 to 1984, demonstrated the remarkable consistency of a major climate-related, step-like change in 1976. To combine the 40 variables (e.g., air and water temperatures, Southern Oscillation, chlorophyll, geese, salmon, crabs, glaciers, atmospheric dust, coral, carbon dioxide, winds, ice cover, Bering Strait transport) into a single time series, standard variants of individual annual values (subtracting the mean and dividing by a standard deviation) were averaged. Analysis of the resulting time series showed that the single step in 1976, separating the 1968-1975 period from the 1977-1984 period, accounted for 89% of variance within the composite time series. Apparently, one of the Earth's large ecosystems occasionally undergoes large abrupt shifts.
    Keywords: Atmospheric Sciences ; Ecology ; Oceanography ; Earth Sciences ; Environment ; PACLIM
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    Deterioration and fragmentation of rivers in Malta (2021)
    In:  http://aquaticcommons.org/id/eprint/4585 | 1256 | 2011-09-29 16:14:35 | 4585 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: Malta, situated in the Mediterranean Sea south of Sicily, is a small island of less than 300 km2. Two hundred years ago Malta was a wet and sodden country. The limestone was like a sponge, with numerous perennial springs, great and small, and so full of water that most flat areas did not drain, but were marsh. Water from springs, rivers and marshes was in ample supply. In the space of two centuries, Malta's rivers have passed from being good, spring-regulated watercourses with a mixed community of clean limewater plants, to the present-day situation where many if not all are on the verge of extinction. This is the result of human impact, not climate change, and is set to continue and increase. Unfortunately the best wetland-type valley communities were scheduled to be destroyed in 1997 but, after a change of Government and vigorous representations, these may now be spared. However, there is at least a great opportunity to prevent further fragmentation of remaining rivers and to reclaim some of the fragmented portions.
    Keywords: Limnology ; Environment ; aquatic plants ; historical account ; land drainage ; limestone ; water supply ; water table ; Sicily
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  • 170
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    Plant nutrients and major ions in the Little Sea, Studland, Dorset (2021)
    In:  http://aquaticcommons.org/id/eprint/4586 | 1256 | 2011-09-29 16:14:51 | 4586 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: This short paper records some measurements made on the Little Sea, a shallow, coastal, acidic lake on Studland Heath, Dorset. The lake, formed about 100 years ago by dunes cutting off a sea inlet, has not received any input of agricultural fertilizers or other waste products for at least the last 30 years. It is a Site of Special Scientific Interest (SSSI). Samples of surface water were taken from the northern and southern ends of the lake at 3-monthly intervals, from July 1995 to April 1996. The first samples in July 1995 were taken during a period of drought; rain, sometimes very heavy, came in late September. With the exception of silicate, potassium and phosphate, there were no large changes in plant nutrient concentrations during the year. The concentration of nitrate-nitrogen was very low (close to the limits of analytical detection), but total phosphorus at ca. 30 mu g per litre was similar to concentrations found in some of the Cumbrian eutrophic lakes. The large number of algal species at low cell/colony concentrations suggested that the lake is mesotrophic. Sodium, chloride and magnesium in the lake water were close to the same proportions as those found in sea water. Dry and wet deposition of sea-salts on the lake surface and its catchment area probably is the major source of sodium, magnesium and chloride ions in the lake, and also accounts for about half of the mean potassium and sulphate concentrations.
    Keywords: Ecology ; Limnology ; Chemistry ; Chemical limnology ; Lakes ; Nitrates ; Nutrients (mineral) ; Silicates ; pH ; England ; Dorset
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    Aquatic ecology, economy and society: the place of aquatic ecology in the sustainability agenda (2021)
    In:  http://aquaticcommons.org/id/eprint/4600 | 1256 | 2011-09-29 16:11:25 | 4600 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: This article explores aspects of sustainability and the importance of sustainable development, including the place of the crucially important resource of fresh water and of freshwater ecosystems. It examines the treatment of natural resources by the economic system that underpins global business, outlines some progress towards more sustainable approaches to business, and recommends steps to re-establish science as the driver of wise policies that contribute to sustainable development.
    Keywords: Ecology ; Environment ; Planning ; Economics ; Ecosystems ; Freshwater ecology ; Natural resources ; Research ; Resource development ; Sociological aspects
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    The ionic composition of surface waters in the English Lake District, related to bedrock geology, with some singular facts and speculation on the existence of mineral-rich groundwaters (2021)
    In:  http://aquaticcommons.org/id/eprint/4593 | 1256 | 2011-09-29 16:12:01 | 4593 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: This article is based on a survey of tarns conducted mainly in the summers of 1983 to 1985, plus a survey made in the winter of 1985, in which streams were sampled on the wide variety of rock-types occurring on the fringes of the Lake District. Differences in composition of major ions and their concentrations in the surface waters of Cumbria reflect the complex geological structure of the region. At altitudes above 300 m, on Borrowdale Volcanics and Skiddaw Slates, surface waters are derived from atmospheric precipitation, with additional inputs of some ions - especially calcium and bicarbonate - from catchment rocks and soils. In some of the low-lying large lakes on the fringes of the central fells, water composition is also dominated by inputs from upper catchments; examples are Wastwater, Ullswater and Haweswater. However in other lakes there is evidence (Derwentwater and Bassenthwaite Lake) of inputs from saline groundwater.
    Keywords: Limnology ; Chemistry ; anions ; cations ; chlorides ; freshwater lakes ; ground water ; ion transport ; nitrates ; potassium ; sodium ; sulphates ; water exchange ; England ; Cumbria
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  • 173
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    Climate change and its risk reduction by mangrove ecosystem of Bangladesh (2021)
    In:  prabalims@gmail.com | http://aquaticcommons.org/id/eprint/4616 | 2663 | 2020-10-11 21:12:49 | 4616
    Details
    Publication Date: 2021-07-05
    Description: Climate change is amongst the most dreaded problems of the newmillennium. Bangladesh is a coastal country bounded by Bay ofBengal on its southern part and here natural disasters are anongoing part of human life. This paper discusses about the possibleimpact of climate change through tropical cyclones, storm surges,coastal erosion and sea level rise in the coastal community ofBangladesh and how they cope with these extreme events by thehelp of mangrove ecosystem. Both qualitative and quantitativediscussions are made by collected data from different researchwork those are conducted in Bangladesh. Mangrove ecosystemprovides both goods and services for coastal community, helps toimprove livelihood options and protect them from natural disasterby providing variety of environmental support
    Description: Institute of Marine Sciences and Fisheries, University of Chittagong
    Description: Climate Change issue of Bangladesh
    Keywords: Atmospheric Sciences ; Environment
    Repository Name: AquaDocs
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  • 174
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    Groundwater abstraction and plankton in the druze pool of Azraq oasis, Jordan (2021)
    In:  http://aquaticcommons.org/id/eprint/4611 | 1256 | 2013-10-27 12:25:08 | 4611 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-04
    Description: The Azraq oasis lies in the Jordanian desert, about 85 km east of Amman. In this brief paper the author summarises his observations from a visit to the oasis in 1991, discusses the effects of pumping groundwater from the oasis to Amman and presents results from a plankton survey.
    Keywords: Ecology ; Limnology ; Environment ; Groundwater pollution ; Site surveys ; Plankton surveys ; Plankton ; Jordan ; Azraq Oasis
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  • 175
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    Environmental oestrogens and sexual development in fish (2021)
    In:  http://aquaticcommons.org/id/eprint/4612 | 1256 | 2011-09-29 16:09:10 | 4612 | Freshwater Biological Association
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    Publication Date: 2021-07-04
    Description: This brief paper discusses the assumption that watercourses might be harbouring a chemical(s) affecting the sexual development in fish. Male fish was found with the oestrogen-dependent blood protein, vitellogenin, usually found only in maturing females. The author examines a number of man-made chemicals present in the environment have been found to be oestrogenic. The paper concludes that rivers contain environmental oestrogens that are capable of causing disruptions in the sexual development of fish. Whether or not these environmental oestrogens are causing a widespread disruption in reproduction in wild fish, however, has yet to be determined.
    Keywords: Biology ; Limnology ; Environment ; Freshwater fish ; Pollution effects ; Proteins ; UK ; Oncorhynchus mykiss ; Cyprinus carpio
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    Looking back: some personal recollections and reflexions on two decades of service with the Charles Darwin Foundation for the Galapagos Islands (2021)
    In:  galapagosresearch@fcdarwin.org.ec | http://aquaticcommons.org/id/eprint/4668 | 704 | 2011-09-29 16:06:15 | 4668 | Fundacion Charles Darwin Foundation
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    Publication Date: 2021-07-05
    Keywords: Conservation ; Environment ; Charles Darwin Research Station ; Charles Darwin Foundation ; Galápagos
    Repository Name: AquaDocs
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    A photographic record of a pre- and post-lake creation event from World War II at Valley, Isle of Anglesey, UK (2021)
    In:  http://aquaticcommons.org/id/eprint/4662 | 1256 | 2011-09-29 16:06:52 | 4662 | Freshwater Biological Association
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    Publication Date: 2021-07-05
    Description: The article compares a recent aerial photograph of the lowlands of the Isle of Anglesey area with a German surveillance photograph from 1941. The authors aim to infer the environmental changes made to this sand dune and lake system as a direct consequence of constructing the airfield. Part of Tywyn Trewan, the extensive sand dune system, was completely destroyed in order to create runways and the technical and domestic accommodation to house a strategic airfield. As part of the dredging, six new water bodies with a combined surface area of approximately 6 ha were created.
    Keywords: Ecology ; Limnology ; Environment ; Photographs ; Wales ; Isle of Anglesey ; Artificial Lakes ; Diatoms
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    The reforestation project on San Cristobal Island (2021)
    In:  galapagosresearch@fcdarwin.org.ec | http://aquaticcommons.org/id/eprint/4671 | 704 | 2011-09-29 16:06:13 | 4671 | Fundacion Charles Darwin Foundation
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    Publication Date: 2021-07-05
    Keywords: Conservation ; Environment ; Miconia robinsoniana ; Scalesia pedunculata ; La Toma ; Isla San Cristóbal ; Galápagos
    Repository Name: AquaDocs
    Type: article
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  • 179
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    Defining the Present Before Restoring the Past: Everglades Vegetation Communities (2021)
    In:  http://aquaticcommons.org/id/eprint/4674 | 3 | 2011-09-29 16:06:07 | 4674 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Description: A publication of the Society of Wetland Scientists
    Keywords: Conservation ; Environment ; Planning ; Everglades ; vegetation ; restoration
    Repository Name: AquaDocs
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  • 180
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    Multi-state succession in wetlands: a novel use of state and transition models (2021)
    In:  http://aquaticcommons.org/id/eprint/4672 | 3 | 2011-09-29 16:06:09 | 4672 | Florida Cooperative Fish and Wildlife Research Unit
    Details
    Publication Date: 2021-07-05
    Keywords: Ecology ; Environment ; Limnology ; Management ; alternate stable states ; CART ; Florida Everglades ; USA ; state and transition models ; succession ; VDDT ; wetlands ; Vegetation Dynamics Development Tool
    Repository Name: AquaDocs
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  • 181
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    Upland hill farming for water, wildlife and food (2021)
    In:  http://aquaticcommons.org/id/eprint/4687 | 1256 | 2011-09-29 16:04:35 | 4687 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-05
    Description: The economic, environmental and social benefits of more sensitive land use practices that protect or restore the natural functions of river catchments have been widely discussed. Changing land use has implications for a wide range of other biological communities. Some studies have already been undertaken on the benefits of sensitive farming at the catchment scale in England and Wales. However, there is a gap in these studies at the local scale, and particularly for upland farms from which headwaters arise. This article documents a case study relating to a successful partnership in Cumbria, UK, set within the wider context of catchment management. Whilst the case study is not highly detailed, and some costs have been described in outline only to protect confidentiality and commercial sensitivity, it provides some generic lessons and may therefore be useful in informing more sustainable policy-making. High Hullockhowe Farm near Haweswater, which was used a the case study highlighting changes in farm practise, costs and benefits, water resources and biodiversity. The authors relate the case study to wider policy implications.
    Keywords: Agriculture ; Environment ; Limnology ; Agriculture ; Environment management ; Policies ; Water management ; Cost analysis ; Catchment area ; England ; Lake District ; Haweswater Reservoir
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    A study of the problems associated with Dalangdian reservoir, China (2021)
    In:  http://aquaticcommons.org/id/eprint/4684 | 1256 | 2011-09-29 16:05:30 | 4684 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-05
    Description: There are over 2,300 lakes over 1 km2 in China (total area 80 000 km2). In addition there are approximately 87 000 reservoirs with a storage capacity of 413 billion m3. These form the main supply of drinking water as well as water for industrial and agricultural production and aquaculture. Because of a lack of understanding of the frailty of lake ecosystems and poor environmental awareness, human activities have greatly affected freshwater systems. This article focuses on the problems of one water supply reservoir, Dalangdian Reservoir, and considers options for improving its management. Dalangdian Reservoir is described and occurrence of algal genera given. The authors conclude with remarks on the future of the Dalangdian Reservoir.
    Keywords: Environment ; Limnology ; Management ; Water reservoirs ; Eutrophication ; Water supply ; Phosphorus ; China ; Dalangdian Reservoir
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  • 183
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    Factors influencing the downstream transport of sediment in the Lough Feeagh catchment, Burrishoole, Co. Mayo, Ireland (2021)
    In:  http://aquaticcommons.org/id/eprint/4706 | 1256 | 2011-09-29 15:59:43 | 4706 | Freshwater Biological Association
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    Publication Date: 2021-07-05
    Description: Research laboratories in the Burrishoole catchment have been the focus of salmonid research since 1955. One aspect of the research has been to monitor the number of salmon and sea trout migrating to sea as smolts and returning to the catchment as adults. In the early 1990s it became clear that the smolt output from the catchment had declined over the previous two decades. At about the same time the presence of fine particles of peat silt in the hatchery became increasingly apparent and led to a higher incidence of mortality of young fry. These observations and management difficulties led to a study of silt transport in the surface waters of the catchment, which is described in this article. The authors describe geology, soils, climate and hydrology of Burrishoole before examining the sediment deposition in Lough Feeagh.
    Keywords: Ecology ; Environment ; Limnology ; Catchment area ; Sediment dynamics ; Sediment gravity flows ; Environmental monitoring ; Eire ; Lough Feeagh
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  • 184
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    Modelling soil erosion and transport in the Burrishoole catchment, Newport, Co. Mayo, Ireland (2021)
    In:  http://aquaticcommons.org/id/eprint/4707 | 1256 | 2011-09-29 15:59:44 | 4707 | Freshwater Biological Association
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    Publication Date: 2021-07-03
    Description: The Burrishoole catchment is situated in County Mayo, on the northwest coast of the Republic of Ireland. Much of the catchment is covered by blanket peat that, in many areas, has become heavily eroded in recent years. This is thought to be due, primarily, to the adverse effects of forestry and agricultural activities in the area. Such activities include ploughing, drainage, the planting and harvesting of trees, and sheep farming, all of which are potentially damaging to such a sensitive landscape if not managed carefully. This article examines the sediment yield and hydrology of the Burrishoole catchment. Flow and sediment concentrations were measured at 8-hourly intervals from 5 February 2001 to 8 November 2001 with an automatic sampler and separate flow gauge, and hourly averages were recorded between 4 July 2002 and 6 September 2002 using an automatic river monitoring system [ARMS]. The authors describe the GIS-based model of soil erosion and transport that was applied to the Burrishoole catchment during this study. The results of these analyses were compared, in a qualitative manner, with the aerial photography available for the Burrishoole catchment to see whether areas that were predicted to contribute large proportions of eroded material to the drainage network corresponded with areas where peat erosion could be identified through photo-interpretation.
    Keywords: Ecology ; Environment ; Limnology ; Catchment area ; Sediment dynamics ; Sediment gravity flows ; Environmental monitoring ; Modelling ; Soil erosion ; Fluvial sedimentation ; Eire ; Burrishoole
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    Relatório Anual de 2009 : Comissão Permanente das Águas da Bacia Hidrográfica do Rio Okavango (2021)
    Comissão Permanente das Águas da Bacia Hidrográfica do Rio Okavango | Maun, Botswana
    In:  http://aquaticcommons.org/id/eprint/4781 | 34 | 2011-09-29 15:54:05 | 4781 | Permanent Okavango River Basin Water Commission (OKACOM)
    Details
    Publication Date: 2021-07-06
    Description: O relatório anual da OKACOM, publicado pela primeira vez, cobrindo o primeiro período do plano de trabalho financiado por Sida de três anos, a partir de 2007 até 2009, durante o qual a Secretaria foi criada. (PDF contains 32 pages)
    Description: Agência Sueca de Cooperação para o Desenvolvimento Internacional (Sida)
    Description: Portuguese version of OKACOM's first published annual report.
    Keywords: Conservation ; Environment ; Management ; Planning ; Policies ; Organizações das Bacias do Rio ; Bacia do Rio Cubango / Okavango ; Angola ; Botsuana ; Namibia ; águas transfronteiriças ; África Sul
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    Type: monograph
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    The Okavango River Basin Transboundary Diagnostic Analysis: reimagining the river (2021)
    Permanent Okavango River Basin Water Commission | Maun, Botswana
    In:  http://aquaticcommons.org/id/eprint/4816 | 34 | 2011-09-29 15:52:05 | 4816 | Permanent Okavango River Basin Water Commission (OKACOM)
    Details
    Publication Date: 2021-07-06
    Description: OKACOM's Transboundary Diagnostic Analysis study used integrated flows analysis to develop scenarios for possible developments in the Okavango River Basin. (PDF contains 2 pages)
    Description: Global Environment Facility
    Description: Food and Agriculture Organization of the United Nations
    Description: United Nations Development Programme
    Description: Environmental Protection and Sustainable Management of the Okavango River Basin (EPSMO)
    Keywords: Conservation ; Earth Sciences ; Environment ; Management ; OKACOM ; Okavango River Basin ; scenarios ; environmental flows ; environmental research ; EPSMO
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  • 187
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    The changes in various iron compounds in culture media for algae. [Translation from: Archiv fur Hydrobiologie Supplemente Band 38(1/2) 151-169, 1970.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4839 | 1256 | 2011-09-29 15:49:48 | 4839 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: The purpose of this work is a contribution to the quantitative record of the use of iron by planktonic algae. Preliminary experiments with Chlorella to determine the rate of iron intake in the presence of inorganic sources of iron did not produce the desired result. The crucial point of this work is the investigation of the influence of various external factors on the stability of FeEDTA (FeEDTA = Ferric(III)-compound of ethylene-diamine tetra-acetic acid), since this compound appears to be particularly well-suited as a source of iron for planktonic algae (e.g. TAMIYA et al. 1953). Cultures of Chlorella fusca in a light thermostat were used in experimental research. Methods and results are discussed.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Biometrics ; Biological sampling ; Geographical distribution ; Population density ; Population characteristics ; Population number ; Freshwater crustaceans ; Population dynamics
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    Determination of dissolved oxygen in water with leukoberbelin-blue I. A quick Winkler method. [Translation from: Z.analyt.Chem. 262 97-99, 1972.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4843 | 1256 | 2011-09-29 15:49:28 | 4843 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: The reaction of Mn(II) with water-dissolved oxygen, to a higher manganese hydroxide in an alkaline medium, as with the longstanding classic Winkler method, is the first step in the method described here. The assumption for faultless results by the conventional and modified Winkler method is clean water, which contains no organic substances by Mn(III) or Mn(IV). In many cases, however, eg. in river and lake-water tests, it can be seen with the naked eye that after some time the originally brown-coloured precipitate of manganese hydroxide becomes more and more colourless. Oxygen content was analysed in the water samples and evaluated by raising the amount of the leuko-base and giving the corresponding dilution of the colouring matter solution formed still higher oxygen contents can be measured.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Methodology ; Experimental research ; Dissolved oxygen ; Analytical techniques ; Water analysis
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  • 189
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    Nitrogen and phosphorus forms in water and the food requirements of algae. [Translation from: Wiadomosci Ekologiczne 19 238-244, 1973. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4848 | 1256 | 2011-09-29 15:49:18 | 4848 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: When dissolved in water, compounds of nitrogen and phosphorus ought to contain the basic assimilated food requirements for autotrophic plants and therefore autotrophic algae. This article summarises the occurrence of nitrogen in water, how species of algae utilize nitrogen and phosphorus forms for growth and the capacities of algae to adapt to environments of different nutrient wealth. This topic has unquestionable importance not only for the purpose of survival of a species but also in deciding indirectly about the stability of ecosystems.
    Description: Translated from Polish into English
    Keywords: Biology ; Chemistry ; Limnology ; Algae ; Nitrogen fixation ; Nitrogen ; Phosphorus ; Nutritional requirements ; Bacteria ; Organic compounds
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  • 190
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    Physiology of nitrate reduction in Pseudomonas aeruginosa. [Translation from: Z.allg.Mikrobiol. 13, 83-94, 1973.] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4856 | 1256 | 2011-09-29 15:48:26 | 4856 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: Pseudomonas aeruginosa has for some time been known as a denitrifier. Pseudomonas aeruginosa was chosen for further studies, because P. aeruginosa occurs abundantly in Plusssee and moreover there are contradictory assertions on the gas products of denitrification by this bacteria. In experimental research the pattern of growth and gas production of Pseudomonas aeruginosa on nutrient broth was studied.
    Description: Translated from German into English
    Keywords: Chemistry ; Ecology ; Limnology ; Experimental research ; Bacteria ; Freshwater lakes ; Growth ; Microbiological culture ; Plusssee
    Repository Name: AquaDocs
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  • 191
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    Relationship of dimensions and weight in freshwater planktonic crustaceans. [Translation from: Doklady Akademii Nauk SSSR 84(1) 153-156, 1952. ] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4857 | 1256 | 2011-09-29 15:48:28 | 4857 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: There is no doubt that determination of the biomass of zooplankton (primarily of crustaceans) will be taken into consideration in practice and limnological works, especially after the recent publication of fairly comprehensive tables of weights of a whole range of species of freshwater copepods and cladocerans. The usefulness of applying formulae of determining the biomass of marine crustaceans for freshwater copepods is discussed.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Freshwater crustaceans ; Zooplankton ; Biomass ; Formulae
    Repository Name: AquaDocs
    Type: monograph
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  • 192
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    Mortality, growth and growth rate variability of striped bass larvae in Chesapeake Subestuaries (2021)
    University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory | Solomons, MD
    In:  http://aquaticcommons.org/id/eprint/4860 | 130 | 2011-09-29 15:47:58 | 4860 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-07-06
    Description: In this report we develop age-length keys and derive age-frequency data. We estimate striped bass and white perch mortality and growth rates, based on the otolith-aging analysis. We also report on hatch-date frequencies of striped bass and white perch larvae, and we discuss environmental effects on recruitment potential.
    Description: Maryland Department of Natural Resources, Tidewater Administration
    Description: Contract No. F112-87-008
    Keywords: Aquaculture ; Conservation ; Ecology ; Environment ; Fisheries ; Management
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  • 193
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    For the determination of iron (II) and total iron with 2,2'-dipyridyl in mineral waters. Reduction of iron (III) with ascorbic acid [Translation from: Zeitschrift fur Analytische Chemie 209 340-341, 1965] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4877 | 1256 | 2011-09-29 15:47:02 | 4877 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-06
    Description: The determination of bi- and trivalent iron in proximity, in mineral waters has gained in significance, on biological and technical grounds. This short paper describes the procedure of the determination of bivalent iron and total iron in a water sample.
    Description: Translated from German into English
    Keywords: Chemistry ; Limnology ; Iron ; Acids ; Analytical techniques ; Minerals ; Water analysis
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    Type: monograph
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  • 194
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    Changes in Fish Communities in the Upper Patuxent River from 1966 to 1977 (2021)
    University of Maryland Center for Environmental and Estuarine Studies | College Park, MD
    In:  http://aquaticcommons.org/id/eprint/4900 | 130 | 2011-09-29 15:44:07 | 4900 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-07-07
    Description: Ten year comparison of fish survey's with respect to diversity evenness and composition of fish communities. The upper Patuxent River was divided into Piedmont Plateau and Coastal Plain regions, not only for geographical purposes, but also because of the clustering of sewage treatment plants in the Coastal Plain region. In the Piedmont Plateau region, the fish species diversity changed very little from 1966 to 1977 ( Little Patuxent -- 2.82 to 2.66; Middle Patuxent -- 2.86 to 2.83; and main stem -- 2.46 to 2.63), except in a section of Little Patuxent River at and below the City of Columbia where the species diversity index showed a significant reduction from 2.97 to 1.99, and in a section of the main stem Patuxent River immediately downstream from the Brighton Dam of the Triadelphia Reservoir where the indexincreased significantly from 1.66 to 3.20. In the Coastal Plain region, a significant reduction in the fish species diversity index occurred between 1966 and 1977 below the two sewage treatment plant outfalls : Savage -- 2.69 to 0 and Patuxent-Crofton -- 3.06 to 1.33. Also, the substantial reduction in the species diversity index which had already occurred in 1966 below the six other plant: outfalls of Fort Meade No. I, Fort Meade No. 2, Maryland House of Correction, Maryland City , Parkway and Bowie, remained depressed in 1977. On the other hand, below the Horsepen Sewage Treatment Plant (a tertiary plant practicing dechlorination) the species diversity index increased from 1.91 to 2.8. (PDF contains 48 pages)
    Description: Water Resources Administration, Department of Natural Resources, State of Maryland
    Description: University of Maryland Center for Environmental Science
    Description: UMCEES Ref. No. 79-41
    Keywords: Ecology ; Environment ; Fisheries ; Pollution ; sewage outfalls ; dechlorination ; Maryland ; Little Patuxent ; Piedmont Plateau ; Hammond Branch ; Dorsey Run ; species diversity
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  • 195
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    Nitrification in marine ecosystems [Translation from: Rapp.Naturvardsverket SNVPM No.1213, 157-166, 1980] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4964 | 1256 | 2011-09-29 15:39:04 | 4964 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: The nitrification in the ocean is influenced by several environmental factors and the importance of these is more or less known. There are very likely many more to be discovered in the study of the interaction of nitrification bacteria and other micro-organisms in the ocean. Some of the factors to be considered will briefly be dealt with in this paper. Then the authors give the results of an incubation experiment in the Baltic Sea and from a detailed study in Gullmarn.
    Description: Translated from Swedish into English
    Keywords: Chemistry ; Ecology ; Oceanography ; Marine ecology ; Nitrification ; Experimental research ; Sediment analysis ; Bacteria ; Carbon fixation ; Nitrosococcus oceanus ; Nitrococcus mobilis
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  • 196
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    Ratio of natural isotopes of nitrogen. I. Primary results: soils of Dombes [Translation from: Revue d'Ecologie et de Biologie du Sol 14, 279-287, 1977] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4967 | 1256 | 2011-09-29 15:36:52 | 4967 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle. In this work, the authors report the results of calculations of natural isotope ratios of nitrogen in samples of water, soil and vegetation prevailing in Dombes and discuss the possibilities of errors and coefficients of fractionation.
    Description: Translated from French into English
    Keywords: Chemistry ; Ecology ; Limnology ; Nitrogen isotopes ; Soils ; Tracers ; Bacteria ; Nitrogen compounds ; France ; Dombes
    Repository Name: AquaDocs
    Type: monograph
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  • 197
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    Experiments on the production of a highly dispersible calcium carbonate. ('Experimental section' only) [Translation from: Szklo i Ceramiki 30, 133-136, 1979] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4963 | 1256 | 2011-09-29 15:39:01 | 4963 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: This short translation summarises experiments on the production of a highly dispersible precipitate of calcium carbonate. The translation covers the 'Experimental section' (of the original larger paper) only.
    Description: Translated from Polish into English
    Keywords: Chemistry ; Limnology ; Experimental research ; Calcium carbonates ; Magnetic fields ; Ultrasonic devices
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  • 198
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    Chemical composition of Iraq water resources (abbreviated translation) [Translation from: Vodnye Resursy 1975(4,) 173-185] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4988 | 1256 | 2011-09-29 15:36:31 | 4988 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: This abbreviated translation summarises the chemical composition of Iraq water resources. Among the described water bodies are the River Euphrates, Shatt al Arab River and a number of standing waters.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Inland water environment ; Inland waters ; Water analysis ; Iraq
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  • 199
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    Mechanism of mass transfer in the formation of hydrothermal deposits of sulphides [Translation from: Trudy Inst.Geol.rudn.Mesterozh. 16, 80 [pages 44-46 ”Solubility of sulphides of iron” only], 1958] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/4980 | 1256 | 2011-09-29 15:38:06 | 4980 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-07
    Description: This partial translation of the original paper provides the summary of this study of the mechanism of mass transfer in the formation of hydrothermal deposits of sulphides. For determining the solubility of sulphides of iron, the radioactive isotope Fe59 was used. The solubility of two sulphides was determined.
    Description: Translated from Russian into English
    Keywords: Chemistry ; Ecology ; Limnology ; Sulphide deposits ; Sulphides ; Hydrothermal deposits ; Iron isotopes ; Solubility
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  • 200
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    Some data on the content of organic carbon in rivers in the winter months. [Translation from: Gidrochim. Mat. 23, 36-38, 1955] (2021)
    Freshwater Biological Association | Windermere, UK
    In:  http://aquaticcommons.org/id/eprint/5054 | 1256 | 2011-09-29 15:29:08 | 5054 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: Observations are reported on the content of organic matter in the Moscow region in 1941. Some data is given on alkalinity, oxygen content and colourisation of the rivers.
    Description: Translated from Russian into English
    Keywords: Biology ; Chemistry ; Limnology ; Rivers ; Organic matter ; Alkalinity ; Dissolved oxygen ; Colour
    Repository Name: AquaDocs
    Type: monograph
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