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  • 11
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    The ecology of phytoplankton in Shropshire and Cheshire meres (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5159 | 3949 | 2011-09-29 15:19:33 | 5159 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: This review summarizes the findings of 5 years' research (June 1970-June 1975) on the meres of the Shropshire-Cheshire Plain. A mere is a small, shallow lake; supplied principally by ground water, whose chemical composition is infkuenced by the glacial frift through which it is percolating. The seasonal periodicity of the phytoplankton in the meres involved work mainly in the Grose Mere. Here diatoms were typically dominant in Feb & March, green algae in April & May, blue-green algae in early summer and dinoflagellates in late summer. This pattern is broadly similar from year to year, and has been suggested to be representative of a 'regional type'; it is also similar to that described for many of the world's mildly eutrophic temperate lakes. Vertical distribution of phytoplankton is influenced by their buoyancy (or lack of it) of by their ability to swim. A stylized depth-time distribution of 4 major phytoplankton components in Crose Mere is given diagrammatically.
    Keywords: Ecology ; Environment ; Limnology ; Freshwater ecology ; phytoplankton ; England ; Cheshire ; Shropshire ; Annual Report
    Repository Name: AquaDocs
    Type: book_section , FALSE
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  • 12
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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
    Type: book_section , FALSE
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  • 13
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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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  • 14
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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
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    Format: 26
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  • 15
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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: 31-44
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  • 16
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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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  • 17
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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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  • 18
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    Bassenthwaite Lake: a general assessment of environmental and biological features and their susceptibility to change (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5254 | 1256 | 2011-09-29 15:09:03 | 5254 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Bassenthwaite (Lake) is one of the larger Cumbrian lakes, certainly one of the most distinctive, and of considerable conservation and amenity value. Although its shores lack sizeable settlements, its main inflow receives sewage effluent from a major tourist centre (Keswick) and is subject to episodic floods. These influences, the growing development of leisure activities at the lake (e.g. sailing, time-share units), and recent road-construction, have led to past appraisals of ecological impacts and lake management. The lake has not been the subject of intense and long-term ecological study, but much scattered information exists that is relevant to future management decisions. In the present Report, commissioned by North West Water, such information - published and unpublished - is surveyed. Especial attention is given to evidence bearing on susceptibility to change, affecting the lake environment and its biota or species of conservation interest. Extensive use has been made of the results of a recent (1986-7) seasonal survey by the FBA.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater lakes ; Freshwater ecology ; Limnology ; Hydrology ; Phytoplankton ; Zooplankton ; Freshwater fish ; Benthos ; England ; Bassenthwaite Lake
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 93
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  • 19
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    A general assessment of environmental and biological features of Windermere and their susceptibility to change (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5255 | 1256 | 2011-09-29 15:09:19 | 5255 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Bassenthwaite (Lake) is one of the larger Cumbrian lakes, certainly one of the most distinctive, and of considerable conservation and amenity value. Although its shores lack sizeable settlements, its main inflow receives sewage effluent from a major tourist centre (Keswick) and is subject to episodic floods. These influences, the growing development of leisure activities at the lake (e.g. sailing, time-share units), and recent road-construction, have led to past appraisals of ecological impacts and lake management. The lake has not been the subject of intense and long-term ecological study, but much scattered information exists that is relevant to future management decisions. In the present Report, commissioned by North West Water, such information - published and unpublished - is surveyed. Especial attention is given to evidence bearing on susceptibility to change, affecting the lake environment and its biota or species of conservation interest. Extensive use has been made of the results of a recent (1986-7) seasonal survey by the FBA.
    Keywords: Biology ; Ecology ; Limnology ; Freshwater lakes ; Freshwater ecology ; Limnology ; Hydrology ; Phytoplankton ; Zooplankton ; Freshwater fish ; Sediments ; England ; Windermere Lake
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 150
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  • 20
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    Petroleum hydrocarbons in fresh waters: a preliminary desk study and bibliography (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5278 | 1256 | 2011-09-29 15:11:09 | 5278 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: A literature survey was carried out into the effects of petroleum hydrocarbons in freshwater, from the toxicity, biodegradability and concentration aspects. It was supplemented by a selective search on hydrocarbons in the marine environment for comparison. The aim was to determine the major inputs of these hydrocarbons, their accumulation, effects and fate in freshwaters. The search was confined to the period 1965-1978. The bibliography contains 390 references, divided by subject.
    Keywords: Chemistry ; Limnology ; Pollution ; literature reviews ; petroleum ; toxicity ; biodegradation
    Repository Name: AquaDocs
    Type: book , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 52
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