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  • 11
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    State of Technology for In Situ Measures of Salinity Using Conductive Temperature Sensors, Savannah, Georgia, December 3-5, 2007: workshop proceedings (2021)
    Alliance for Coastal Technologies | Solomons, MD
    In:  http://aquaticcommons.org/id/eprint/3110 | 130 | 2011-09-29 17:51:42 | 3110 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-07-01
    Description: This Alliance for Coastal Technologies (ACT) workshop was convened to assess the availabilityand state of development of conductivity-temperature sensors that can meet the needs of coastalmonitoring and management communities. Rased on the discussion, there are presently a numberof commercial sensor options available, with a wide range of package configurations suitable fordeployment in a range of coastal environments. However, some of the central questions posedin the workshop planning documents were left somewhat unresolved. The workshop descriptionemphasized coastal management requirements and, in particular, whether less expensive, easilydeployed, lower-resolution instruments might serve many management needs. While several participantsexpressed interest in this class of conductivity-temperature sensors, based on input fromthe manufacturers, it is not clear that simply relaxing the present level of resolution of existing instrumentswill result in instruments of significantly lower unit cost. Conductivity-temperature sensorsare available near or under the $1,000 unit cost that was operationally defined at the workshopas a breakpoint for what might be considered to be a "low cost" sensor. For the manufacturers, akey consideration before undertaking the effort to develop lower cost sensors is whether there willbe a significant market. In terms of defining "low cost," it was also emphasized that the "life cyclecosts" for a given instrument must be considered (e.g., including personnel costs for deploymentand maintenance). An adequate market survey to demonstrate likely applications and a viablemarket for lower cost sensors is needed. Another topic for the workshop was the introductionto the proposed ACT verification for conductivity-temperature sensors. Following a summaryof the process as envisioned by ACT, initial feedback was solicited. Protocol development willbe pursued further in a workshop involving ACT personnel and conductivity-temperature sensormanufacturers.[PDF contains 28 pages]
    Description: NOAA
    Description: Alliance for Coastal Technologies, CBL/UMCES
    Keywords: Earth Sciences ; Environment ; Chemistry
    Repository Name: AquaDocs
    Type: monograph
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  • 12
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    Technologies for Measuring Currents in Coastal Environments, Portland, Maine, October 26-28, 2005:workshop proceedings (2021)
    Alliance for Coastal Technologies | Solomons, MD
    In:  http://aquaticcommons.org/id/eprint/3119 | 130 | 2011-09-29 17:52:39 | 3119 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-06-25
    Description: The Alliance for Coastal Technologies (ACT) Workshop entitled "Technologies for MeasuringCurrents in Coastal Environments" was held in Portland, Maine, October 26-28, 2005, withsponsorship by the Gulf of Maine Ocean Observing System (GoMOOS), an ACT partnerorganization. The primary goals of the event were to summarize recent trends in nearshoreresearch and management applications for current meter technologies, identify how currentmeters can assist coastal managers to fulfill their regulatory and management objectives, and torecommend actions to overcome barriers to use of the technologies. The workshop was attendedby 25 participants representing state and federal environmental management agencies,manufacturers of current meter technologies, and researchers from academic institutions andprivate industry.Common themes that were discussed during the workshop included 1) advantages and limitationsof existing current measuring equipment, 2) reliability and ease of use with each instrument type,3) data decoding and interpretation procedures, and 4) mechanisms to facilitate better training andguidance to a broad user group. Seven key recommendations, which were ranked in order ofimportance during the last day of the workshop are listed below.1. Forums should be developed to facilitate the exchange of information among users andindustry:a) On-line forums that not only provide information on specific instruments andtechnologies, but also provide an avenue for the exchange of user experiences withvarious instruments (i.e. problems encountered, cautions, tips, advantages, etc). (seeReferences for manufacturer websites with links to application and technical forums atend of report)b) Regional training/meetings for operational managers to exchange ideas on methods formeasuring currents and evaluating data.c) Organize mini-meetings or tutorial sessions within larger conference venues.2. A committee of major stakeholders should be convened to develop common standards(similar to the Institute of Electrical and Electronics Engineers (IEEE) committee) thatenable users to switch sensors without losing software or display capabilities. (pdf contains 28 pages)
    Description: NOAA
    Description: Alliance for Coastal Technologies, CBL/UMCES
    Keywords: Oceanography ; Engineering ; Environment
    Repository Name: AquaDocs
    Type: monograph
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  • 13
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    Applications of in situ Fluorometers in Nearshore waters, Cape Elizabeth, Maine, February 2-4,2005: workshop proceedings (2021)
    Alliance for Coastal Technologies | Solomons, MD
    In:  http://aquaticcommons.org/id/eprint/3126 | 130 | 2011-09-29 17:52:50 | 3126
    Details
    Publication Date: 2021-06-25
    Description: The Alliance for Coastal Technologies (ACT) Workshop "Applications of in situ Fluorometers inNearshore Waters" was held in Cape Elizabeth, Maine, February 2-4,2005, with sponsorship bythe Gulf of Maine Ocean Observing System (GoMOOS), one of the ACT partner organization.The purpose of the workshop was to explore recent trends in fluorometry as it relates to resourcemanagement applications in nearshore environments. Participants included representatives fromstate and federal environmental management agencies as well as research institutions, many ofwhom are currently using this technology in their research and management applications.Manufacturers and developers of fluorometric measuring systems also attended the meeting.The Workshop attendees discussed the historical and present uses of fluorometry technology andidentified the great potential for its use by coastal managers to fulfill their regulatory andmanagement objectives. Participants also identified some of the challenges associated with thecorrect use of Fluorometers to estimate biomass and the rate of primary productivity. TheWorkshop concluded that in order to expand the existing use of fluorometers in both academicand resource management disciplines, several issues concerning data collection, instrumentcalibration, and data interpretation needed to be addressed. Participants identified twelverecommendations, the top five of which are listed below:Recommendations1) Develop a "Guide" that describes the most important aspects of fluorescencemeasurements. This guide should be written by an expert party, with both research andindustry input, and should be distributed by all manufacturers with theirinstrumentation. The guide should also be made available on the ACT website as wellas those of other relevant organizations. The guide should include discussions on thefollowing topics:The benefits of using fluorometers in research and resource managementapplications;What fluorometers can and cannot provide in terms of measurements;The necessary assumptions required before applying fluorometry;Characterization and calibration of fluorometers; (pdf contains 32 pages)
    Description: NOAA
    Description: Alliance for Coastal Technologies, CBL/UMCES
    Keywords: Environment ; Chemistry
    Repository Name: AquaDocs
    Type: monograph
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  • 14
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    Seabed Sensor Technology, Savannah, Georgia, February 1-3, 2006: workshop proceedings (2021)
    Alliance for Coastal Technologies | Solomons, MD
    In:  http://aquaticcommons.org/id/eprint/3239 | 130 | 2011-09-29 17:41:57 | 3239 | University of Maryland Center for Environmental Science. Chesapeake Biological Laboratory
    Details
    Publication Date: 2021-06-26
    Description: Future coastal management practices require that a holistic, ecosystem management approach beadopted. Coastal ecosystems, however, present a variety of specific and unique challengesrelative to open ocean systems. In particular, interactions with the seabed significantly influencethe coastal ecosystem. Observing technologies must be developed and employed to incorporateseafloor interactions, processes and habitat diversity into research and management activities.An ACT Workshop on Seabed Sensor Technology was held February 1-3, 2006 in Savannah,Georgia, to summarize the current state of sensor technologies applicable to examining andmonitoring the coastal seabed, including the near-bed benthic boundary layer and surfacesediment layer. Workshop participants were specifically charged to identify current sensors inuse, recommend improvements to these systems and to identify areas for future development andactivities that would advance the use of sensor technology in the observation, monitoring andmanagement of the coastal benthic environment. (pdf contains 23 pages)
    Description: NOAA
    Description: Alliance for Coastal Technologies, CBL/UMCES
    Keywords: Oceanography ; Engineering ; Environment
    Repository Name: AquaDocs
    Type: monograph
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  • 15
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    The changing chemical composition of chalk streams and rivers (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5157 | 3949 | 2011-09-29 15:19:58 | 5157 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: The area studied was the River Frome system below Dorchester. The main river has its origins mainly in chalk springs, although some of its tributaries have surface run-off from farm lands and heath-lands. Thus the chemistry of the river is affected by changes in land practice and differences in the geology of the catchment area. Regular chemical analysis of chalk waters started at the River Laboratory in 1964, Regular weekly analyses have been carried out since 1965 at Bere Stream (a small chalk stream) and the River Frome (a large chalk stream); also single samples have been analysed to provide preliminary information. In 1970-71 an attempt was made to discover the contribution each main source made to the flow and chemical composition of the River Frome. Results of these investigations are presented in the paper.
    Keywords: Chemistry ; Environment ; Chemical analysis ; Chemical composition ; Rivers ; Stream flow ; Annual report ; England ; Dorset
    Repository Name: AquaDocs
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  • 16
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    Geochemistry of lipids in lacustrine sediments (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5171 | 3949 | 2011-09-29 15:18:48 | 5171 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An explanation of the basic premises of the subject and its terminology is given. The article then outlines aspects of research on the organic material found in lacustrine sediments, and the analytical methods involved.
    Keywords: Chemistry ; Earth Sciences ; Diagenesis ; Freshwater lakes ; Geochemistry ; Lipids ; Sediment analysis ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 45-56
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  • 17
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    Joint research project on the aquatic ecotoxicity of organo-aluminium: Chemical reactions. First interim report (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5225 | 1256 | 2011-09-29 15:12:36 | 5225 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The overall goal of the joint research project is to relate the chemical reactions involved in the formation of organo-aluminium complexes under acid conditions to their toxic effects on the physiology of aquatic organisms. Finally, this research is intended to predict toxic effects arising from acidity and aluminium under varying environmental conditions. This interim report examines the chemical modelling of ion-binding by humic substances where a computer model has been developed and is being tested using field data, and conditions required for the precipitation of aluminium in surface waters.
    Keywords: Chemistry ; Limnology ; Pollution ; Modelling ; Models ; Humic acids ; Surface water ; Aluminium compounds ; Aluminium ; Ions ; Toxicity ; England ; Duddon River
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 26
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  • 18
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    Decomposition in lake sediments: bacterial action and interaction (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5239 | 3949 | 2011-09-29 15:13:47 | 5239 | Freshwater Biological Association
    Details
    Publication Date: 2021-06-24
    Description: This review discusses the processes involved in the decomposition of organic carbon derived initially from structural components of algae and other primary producers. It describes how groups of bacteria interact in time and space in a eutrophic lake. The relative importance of anaerobic and aerobic processes are discussed. The bulk of decomposition occurs within the sediment. The role of bacteria in the nitrogen cycle and the iron cycle, and in sulphate reduction and methanogenesis as the terminal metabolism of organic carbon are described.
    Keywords: Biology ; Chemistry ; Anaerobic bacteria ; Bacteria ; Biodegradation ; Carbon cycle ; Eutrophic lakes ; Fresh water ; Geochemical cycle ; Iron ; Manganese ; Nitrates ; Nitrogen cycle ; Organic carbon ; Oxygen consumption ; Partical size ; Sedimentation ; Sulphates ; Sulphur ; Annual report
    Repository Name: AquaDocs
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    Format: application/pdf
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    Format: 31-44
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  • 19
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    Biological and climatic influences on the dace Leuciscus leuciscus in a southern chalk-stream (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5247 | 3949 | 2011-09-29 15:08:19 | 5247 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The dace, Leuciscus leuciscus (L.) is an important cyprinid in terms of population biomass in chalk streams of southern England. Dace recruitment has been shown to vary widely from year to year and it is thought that this variation is largely as a result of the influence of abiotic factors, chiefly water temperature. From 1968 to 1981 there was a thirteen-fold difference in the year class structure index between the minimum index (0.25 in 1972) and the maximum (3.21 in 1976). The problems of such variation, especially those that could ensue from a succession of poor year-classes, are offset by the spread of reproductive effort by each female over several years.
    Keywords: Biology ; Chemistry ; Fisheries ; Abiotic factors ; Age composition ; Annual variations ; Climate ; Fecundity ; Fish eggs ; Fish larvae ; Freshwater fish ; Life history ; Mortality ; Population dynamics ; Predation ; Recruitment ; Sexual reproduction ; Survivial ; Water temperature ; Cyprinidae ; Leuciscus leuciscus ; England ; Dorset ; Chalk streams ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
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    Format: 83-96
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  • 20
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    Analysis and adsorption of phosalone on aquatic sediment (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5257 | 1256 | 2011-09-29 15:09:23 | 5257 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Phosalone is a non systematic, wide spectrum organophosphate pesticide which was discovered in 1961 in the laboratories of the Societe des Usines Chimique Rhone-Poulenc in France. It has been approved for commercial use since 1964 in France, in Australia since 1966, in the United Kingdom in 1967 and in many other countries including Japan, Egypt, USSR and the USA. This study provides a full literature review on all aspects of phosalone including its physical, biological and chemical characteristics, and analytical methods of analysis with particular reference to soils/sediments. Furthermore, it aims to develop a method for the determintion of phosalone in aquatic sediments and to determine the adsorption of phosalone onto kaolinite.
    Keywords: Chemistry ; Limnology ; Pollution ; Insecticides ; Metabolism ; Toxicity ; Biodegradation ; Adsorption
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 54
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