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  • Oceanography  (43)
  • Côte d'Ivoire  (26)
  • 2020-2022  (62)
  • 1
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    Modeling North Pacific temperature and pressure changes from coastal tree-ring chronologies (2021)
    In:  http://aquaticcommons.org/id/eprint/15747 | 8 | 2014-11-25 22:22:18 | 15747
    Details
    Publication Date: 2021-07-10
    Description: Climate modeling using coastal tree-ring chronologies has yielded the first summer temperature reconstructions for coastal stations along the Gulf of Alaska and the Pacific Northwest. These land temperature reconstructions are strongly correlated with nearby sea surface temperatures, indicating large-scale ocean-atmospheric influences. Significant progress has also been made in modeling winter land temperatures and sea surface temperatures from coastal and shipboard stations. In addition to temperature, the pressure variability center over the central North Pacific Ocean (PAC), which is related to the strength and location of the Aleutian Low pressure system, could be extended using coastal tree rings.
    Keywords: Atmospheric Sciences ; Oceanography ; PACLIM ; dendrochronology
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 67-78
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  • 2
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    The climate and eastern ocean systems project (2021)
    In:  http://aquaticcommons.org/id/eprint/9075 | 115 | 2012-11-26 08:21:02 | 9075 | WorldFish Center
    Details
    Publication Date: 2021-07-01
    Description: A brief description of the NMFS/ORSTOM/ILCARM climate and Eastern Ocean systems (CEOS) project is given. CEOS will study the four major eastern boundary current regions (Peru/Chile, California, Northwest and Southwest Africa) and attempt to separate local short term changes of their resources and/or dynamics from long-term, climatic global changes. Expected products range from a large, widely accessible oceanographic / atmospheric database to various documents that will present key results as well as improved contacts and stronger analytical capabilities in cooperating national institutions.
    Keywords: Fisheries ; Oceanography ; Climatic changes ; Research ; Ecosystems ; Clupeoid fisheries ; Upwelling
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 26-30
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  • 3
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    Tree-ring records as indicators of air-sea interaction in the northeast Pacific sector (2021)
    In:  http://aquaticcommons.org/id/eprint/15629 | 8 | 2014-11-13 19:41:53 | 15629
    Details
    Publication Date: 2021-07-09
    Description: Climate conditions in land areas of the Pacific Northwest are strongly influenced by atmosphere/ocean variability, including fluctuations in the Aleutian Low, Pacific-North American (PNA) atmospheric circulation modes, and the El Niño-Southern Oscillation (ENSO). It thus seems likely that climatically sensitive tree-ring data from these coastal land areas would likewise reflect such climatic parameters. In this paper, tree-ring width and maximum lakewood density chronologies from northwestern Washington State and near Vancouver Island, British Columbia, are compared to surface air temperature and precipitation from nearby coastal and near-coastal land stations and to monthly sea surface temperature (SST) and sea level pressure (SLP) data from the northeast Pacific sector. Results show much promise for eventual reconstruction of these parameters, potentially extending available instrumental records for the northeastern Pacific by several hundred years or more.
    Keywords: Atmospheric Sciences ; Environment ; Oceanography ; PACLIM ; dendrochronology
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 35-45
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  • 4
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    Spatio-Temporal Variability of Zooplankton Distribution and Abundance in Manila Bay from 2013-2015 (2021)
    In:  http://aquaticcommons.org/id/eprint/26976 | 25026 | 2020-03-05 00:58:47 | 26976 | National Fisheries Research and Development Institute, Philippines
    Details
    Publication Date: 2021-07-24
    Description: The study characterized the spatiotemporal variations in composition, abundance, and diversity of zooplankton community in Manila Bay. Zooplankton samples were collected every two months within three years from 2013 to 2015. The zooplankton composition of Manila Bay includes 29, 52, and 50 taxa in 2013, 2014, and 2015, respectively belonging to the following major groups: Copepoda, Decapoda, Cladocera, Chordata, Annelida, Mollusca, Chaetognatha, Ciliophora, Foraminifera, Echinodermata, and Chromista. Copepod nauplii consistently dominated the zooplankton community in the bay from 2013 to 2015 followed by Tintinnids, Oithona spp., Euterpina acutifrons, and Paracalanus spp. The highest concentration of zooplankton was specifically observed in the south western side near the mouth of the bay (Station 4) in July 2015. In 2014, the highest recorded zooplankton density was in the month of November in the eastern side (Station 10). In general, relatively high diversities of zooplankton community were recorded in many months in 2015 as compared to 2013 and 2014 although the highest recorded diversity occurred in March 2014. Redundancy Analysis revealed salinity, temperature, dissolved oxygen, chlorophyll a, PO4, SiO, and NO3 to have a strong correlation with the zooplankton abundances and distribution.
    Keywords: Aquaculture ; Ecology ; Fisheries ; Oceanography ; Zooplankton ; Diversity ; Environmental Factors ; Redundancy Analysis
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 94-105
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  • 5
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    The distribution of larval fishes of the Charleston Gyre Region off the southeastern United States in winter shaped by mesoscale, cyclonic eddies (2021)
    In:  http://aquaticcommons.org/id/eprint/14680 | 403 | 2014-02-28 19:37:37 | 14680 | United States National Ocean Service
    Details
    Publication Date: 2021-07-01
    Description: Serial, cyclonic, mesoscale eddies arise just north of the Charleston Bump, a topographical rise on the continentalslope and Blake Plateau, and characterize the U.S. outer shelf and upper slope in the region of the Charleston Gyre.This region was transected during the winters of 2000, 2001, and 2002, and hydrographic data and larval fishes werecollected. The hydrodynamics of the cyclonic eddies of the Charleston Gyre shape the distribution of larval fishes bymixing larvae from the outer continental shelf and the Gulf Stream and entraining them into the eddy circulation atthe peripheral margins, the wrap-around filaments. Over all years and transects (those that intercepted eddies andthose that did not), chlorophyll a concentrations, zooplankton displacement volumes, and larval fish concentrations were positively correlated. Chlorophyll a concentrations were highest in filaments that wrapped around eddies, and zooplankton displacement volumes were highest in the continental shelf–Gulf Stream–frontal mix. Overall, the concentration of all larval fishes declined from inshore to offshore with highest concentrations occurring over the outer shelf. Collections produced larvae from 91 fish families representing continental shelf and oceanic species. The larvae of shelf-spawned fishes—Atlantic Menhaden Brevoortia tyrannus, Round Herring Etrumeus teres, Spot Leiostomus xanthurus, and Atlantic Croaker Micropogonias undulatus—were most concentrated over the outer shelf and in the continental shelf–Gulf Stream–frontal mix. The larvae of ocean-spawned fishes—lanternfishes, bristlemouths, and lightfishes—were more evenly dispersed in low concentrations across the outer shelf and upper slope, the highest typically in the Gulf Stream and Sargasso Sea, except for lightfishes that were highest in the continental shelf–Gulf Stream–frontal mix. Detrended correspondence analysis rendered groups of larval fishes that corresponded with a gradient between the continental shelf and Gulf Stream and Sargasso Sea. Eddies propagate northeastward with a residence time on the outer shelf and upper slope of ∼1 month, the same duration as the larval period of most fishes. The pelagic habitat afforded by eddies and fronts of the Charleston Gyre region can be exploited as nursery areas for feeding and growth of larval fishes within the southeastern Atlantic continental shelf ecosystem of the U.S. Eddies, and the nursery habitat they provide, translocate larvae northeastward.
    Keywords: Ecology ; Fisheries ; Oceanography
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 246-259
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  • 6
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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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  • 7
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    Synopsis de la classification des larves et des nymphes de diptères chironomidae des ecosystèmes dulçaquicoles de l'Afrique de l'Ouest: clés de détermination des sous-familles, des tribus et des genres (2021)
    In:  http://aquaticcommons.org/id/eprint/7488 | 424 | 2012-01-05 12:53:14 | 7488 | Centre de Recherches Océanologiques, Côte d'Ivoire
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    Publication Date: 2021-07-03
    Description: Synopsis of this numerically very important Diptera category, which is dominant and consequently of relevance in most aquatic environments.
    Keywords: Biology ; Western Africa ; Côte d'Ivoire ; taxonomy ; Diptera Chironomidae ; larvae ; freshwater ecosystems
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-31
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  • 8
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    Phytotoxicité du glyphosate sur la Jacinthe d'eau (Eichhornia crassipes, Solms) (2021)
    In:  http://aquaticcommons.org/id/eprint/7519 | 424 | 2012-01-30 09:46:10 | 7519 | Centre de Recherches Océanologiques, Côte d'Ivoire
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    Publication Date: 2021-07-03
    Description: The toxicity of the herbicide glyphosate was tested on water hyacinth (Eichhornia crassipes) samples cultivated in glass aquariums. The lowest dose (0.09 g.m-2) leads to an increasing plant growth rate. This growth rate decreases with intermediate doses (0.18 and 0.36 g.m-2), the consequence of which is to increase stolons (vegetative reproduction). On the other hand, the dose of 0.72 g.m-2 leads to a total and irreversible destruction of plants.
    Keywords: Biology ; Ecology ; Environment ; Côte d'Ivoire ; Lagune Ebrié ; Eichhornia crassipes ; water hyacinth ; glyphosate ; herbicides ; chemical control ; lethal dose
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 119-123
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  • 9
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    Écologie de bassins de lagunage pour le traitement d'effluents domestiques en milieu tropical humide (Côte d'Ivoire) (2021)
    In:  http://aquaticcommons.org/id/eprint/7542 | 424 | 2012-01-31 07:44:03 | 7542 | Centre de Recherches Océanologiques, Côte d'Ivoire
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    Publication Date: 2021-07-04
    Description: The waste water treatment of Dabou (Côte d'Ivoire), made of three oxydation ponds (B1, B2 and B3), is designed to ensure a biological treatment of domestic sewage and a valorization of the final effluent in aquaculture. In order to understand the ecological mechanisms and the performance of this system, a pluridisciplinary program was achieved in February 1989.
    Keywords: Ecology ; Environment ; Pollution ; Côte d'Ivoire ; domestic sewage ; nitrogen metabolism ; food web ; trophic level
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 19-41
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  • 10
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    Variations temporelles de Vibrio cholerae Non 01 et conditions environnementales dans un site aquacole (Lagune Ebrié, Côte d'Ivoire) (2021)
    In:  http://aquaticcommons.org/id/eprint/7565 | 424 | 2012-01-31 07:28:10 | 7565 | Centre de Recherches Océanologiques, Côte d'Ivoire
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    Publication Date: 2021-07-04
    Description: The annual cycle of Vibrio cholerae in the environment surrounding the Layo aquaculture facility (Ebrié lagoon) was studied from March 1991 to April 1992. Vibrio cholerae counts were coupled with the determination of physical and chemical characteristics of water and the estimation of biological richness of this environment.
    Keywords: Biology ; Health ; Côte d'Ivoire ; Lagune Ebrié ; lagoons ; Vibrio cholerae ; cholera ; contamination
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 1-15
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