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  • 11
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    Lake deposits (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5115 | 3949 | 2011-09-29 15:21:39 | 5115 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An article detailing further developments in the bathymetric survey work as detailed in the 6th annual report of the Freshwater Biological Association. Work has concentrated on investigating the layering in lake deposits (with the use of special equipment and corers), extending the area of lake for bathymetric surveys and the analysis of diatoms and plant material from core samples. A number of waterbodies in the Lake District are investigated, including: Bassenthwaite Lake, Derwentwater, Ennerdale Water, Rydal Water, Coniston Water, Buttermere Lake, Grasmere Lake, Esthwaite Water, Loweswater Lake, Haweswater Reservoir, Crummock Water, Ullswater Lake, Thirlmere Reservoir, Wastwater and Lake Windermere.
    Keywords: Biology ; Earth Sciences ; Limnology ; Cores ; Diatoms ; Bathymetric surveys ; Lake deposits ; Lake morphology ; Aquatic plants ; Annual reports ; England ; Lake District
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 57-62
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  • 12
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    The design and development of the Windermere Profiler. An instrument for measuring how various environmental parameters vary with depth in lakes, reservoirs and rivers (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5123 | 3949 | 2011-09-29 15:22:51 | 5123 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: A review article detailing the background, development and functionality of the Windermere Profiler, a multi parameter environmental monitoring instrument for use in lakes, reservoirs and rivers. The article explains the requirement for regular data collection by the Freshwater Biological Association at Windermere. The article covers the requirements of a profiling instrument, the design considerations, the electronic circuitry, the computer program, the operation of the computer software, the profiler in use and further developments to the design. A number of figures and images accompany the article.
    Keywords: Chemistry ; Environment ; Limnology ; Profilers ; Inland water environment ; Water reservoirs ; Lakes ; Rivers ; Temperature data ; Electrical conductivity ; Dissolved oxygen ; Depth measurement ; Light attenuation ; Annual reports ; England ; Lake District
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 93-106
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  • 13
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    Faunistic studies (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5116 | 3949 | 2011-09-29 15:21:42 | 5116 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An update on the work undertaken by the authors, Macan and Hynes, over the past year. Macan provides details of additional work undertaken since his publication of faunistic work on adult animals, including details on additional field data, further developments of the conclusions intially drawn and further comparisons with fauna of the highlands of Scotland. Two histograms are provided showing succession of Corixidae in two separate waterbodies. Habitat conditions are also discussed for this species and a number of locations are mentioned including, Blelham Tarn, Derwentwater and Rusland Moss. An update on stonefly work undertaken by Hynes is provided, specifically stomach contents of nymphs and habitat preference. Details are also given of aquatic insects being breed by the staff for research.
    Keywords: Biology ; Limnology ; Aquatic insects ; Habitat selection ; Riparian vegetation ; Lakes ; Species diversity ; Annual reports ; Invertebrate larvae ; Plecoptera ; Corixidae ; England ; Lake District
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 63-66
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  • 14
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    The growth of brown trout (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5117 | 3949 | 2011-09-29 15:22:21 | 5117 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: An article discussing the factors affecting the rate of growth of brown trout, detailing the research udnertaken at Wray Castle, designed to clarify the influencing factors in different waters and investigate what would be required to increase their size. The article considers factors such as alkalinity, total hardness, the presence of coarse fish in the waterbodies and competition for food. Previous work undertaken on brown trout in Ireland by other authors is reviewed. A figure showing average growth rate of brown trout in five lakes, as determined from their scales (Lough Derg, Windermere, Loch Leven, Ullswater, Haweswater).
    Keywords: Biology ; Chemistry ; Limnology ; Coarse fish ; pH effects ; Water hardness ; Food availability ; Limnology ; England ; Lake District
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 66-71
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  • 15
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    Interpreting the environmental record in the sediments of Blelham Tarn (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5166 | 3949 | 2011-09-29 15:18:23 | 5166 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-08
    Description: Two aspects of the environmental record in the sediments of Blelham Tarn have been investigated: (1) the ecological history of the catchment, and lake-catchment relationships, by detailed analysis of the preserved pollen (as an indication of vegetation) and sediment composition with respect to a range of inorganic and organic geochemical variables and (2) a detailed investigation of the manner in which sediment is being formed today, including the way in which microfossils (pollen and diatoms) are being recruited and incorporated into sediments. When the record was examined by biological and geochemical analysis, together with radionuclide dating, of closely spaced samples, it was found that the changes of the last 30 yrs represented only the most recent episode in a long history of modification of the lake by man. To find an approach to this it is necessary to go back for at least 2500 yrs.
    Keywords: Biology ; Ecology ; Limnology ; Environmental conditions ; Sediment analysis ; Sediment sampling ; Sediment-water interface ; Unconsolidated sediments ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
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  • 16
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    The first fifty years of the Freshwater Biological Association (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5176 | 3949 | 2011-09-29 15:19:21 | 5176 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: A brief history of the Freshwater Biological Association is given in this article. The association has been in existence for fifty years, having been founded in 1929.
    Keywords: Biology ; Planning ; Research institutions ; Historical account ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 27-42
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  • 17
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    Fungal and protozoan parasites and their importance in the ecology of the phytoplankton (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5177 | 3949 | 2011-09-29 15:19:29 | 5177 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The presence of fungi on the phytoplankton of Lake Windermere was first noted by the author in 1943. Surveys into the fungal and protozoan parasites of the planktonic algae of the English Lake District and elsewhere were carried out. This article discusses the descriptive studies, epidemics and culture work, which was carried out in connection with these studies.
    Keywords: Biology ; Planning ; Parasites ; Fungal diseases ; Protozoan diseases ; Phytoplankton ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 43-50
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  • 18
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    Ceratium hirundinella - ecology of a complex, mobile, and successful plant (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5180 | 3949 | 2011-09-29 15:17:07 | 5180 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: Recent work carried out in the English Lake District (Esthwaite Water and Blelham Tarn) is reported. The seasonal growth cycle, diel growth cycle, photosynthesis, vertical distribution and migrations, horizontal distribution, and the interaction of environmental factors, were investigated.
    Keywords: Biology ; Ecology ; Freshwater Ecology ; Life History ; Ceratium hirundinella ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 27-40
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  • 19
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    Acid precipitation and its effects on aquatic systems in the English Lake District (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5189 | 3949 | 2011-09-29 15:16:49 | 5189 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: There is no evidence of an increase in the acidity (lower pH or alkalinity) of water-bodies in the Lake District over the last 50 years. Brown trout occur in acid streams and upland tarns where pH is 4.5-5.2 throughout the year. Their occurrence in such waters in Britain and Ireland has been known for most of this century and there is no previous evidence of harmful effects on salmonid fisheries, though numbers of fish are naturally low. However, many benthic invertebrates that are common in hill-streams where pH is above 5.7 do not occur in more acid streams. This phenomenon occurs in the headwaters of several western rivers in Cumbria. It is not a recent response to "acid rain". Harmful effects of pH are undoubtedly more pronounced in waters that are poor in other dissolved ions. Low concentrations of sodium, potassium, calcium and chloride are especially important and may limit the distributions of some aquatic animals even where pH is above 5.7. The concentration of sulphate ions is usually relatively high but this is not important to the fauna; concentrations are at least two times higher in productive alkaline water-bodies than they are in unproductive acid waters.
    Keywords: Chemistry ; Ecology ; Limnology ; Acid rain ; Acidification ; Alkalinity ; Freshwater pollution ; pH ; Pollution effects ; Invertebrata ; Salmonidae ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 30-62
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  • 20
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    The Freshwater Biological Association and the International Biological Programme (1961-1976) (2021)
    Freshwater Biological Association | Ambleside, UK
    In:  http://aquaticcommons.org/id/eprint/5183 | 3949 | 2011-09-29 15:17:20 | 5183 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-09
    Description: The involvement of the FBA in the primary productivity program is reviewed.
    Keywords: Biology ; Management ; Research programmes ; Primary production ; England ; Lake District ; Annual report
    Repository Name: AquaDocs
    Type: book_section , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 60-73
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