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  • 1
    Monograph available for loan
    Monograph available for loan
    Climate Change Impacts on Freshwater Ecosystems (2010)
    Chichester [u.a.] : Wiley-Blackwell
    Details Availability
    Call number: M 11.0307
    Description / Table of Contents: Contents: 1 Introduction (Brian Moss, Richard W. Battarbee and Martin Kernan). 2 Aquatic Ecosystem Variability and Climate Change - A Palaeoecological Perspective (Richard W. Battarbee). 3 Direct Impacts of Climate Change on Freshwater Ecosystems (Ulrike Nickus, Kevin Bishop, Martin Erlandsson, Chris D. Evans, Martin Forsius, Hjalmar Laudon,David M. Livingstone, Don Monteith and Hansjorg Thies). 4 Climate Change and the Hydrology and Morphology of Freshwater Ecosystems (Piet F.M. Verdonschot, Daniel Hering, John Murphy, Sonja C. Jahnig, Neil L. Rose, Wolfram Graf, Karel Brabec and Leonard Sandin). 5 Monitoring the Responses of Freshwater Ecosystems to Climate Change (Daniel Hering, Alexandra Haidekker, Astrid Schmidt-Kloiber, Tom Barker, Laetitia Buisson, Wolfram Graf, Gael Grenouillet, Armin Lorenz, Leonard Sandin and Sonja Stendera). 6 Interaction of Climate Change and Eutrophication (Erik Jeppesen, Brian Moss, Helen Bennion, Laurence Carvalho, Luc DeMeester, Heidrun Feuchtmayr, Nikolai Friberg, Mark O. Gessner, Mariet Hefting, Torbden L. Lauridsen, Lone Liboriussen, Hilmar Malmquist, Linda May, Mariana Meerhoff, Jon S. Olafsson, Merel B. Soons and Jos T.A. Verhoeven). 7 Interaction of Climate Change and Acid Deposition (Richard F. Wright, Julian Aherne, Kevin Bishop, Peter J. Dillon,Martin Erlandsson, Chris D. Evans, Martin Forsius, David W. Hardekopf, Rachel C. Helliwell, Jakub Hruska,Mike Hutchins, Oyvind Kaste, Jiri Kopac ek, Pavel Kram, Hjalmar Laudon, Filip Moldan, Michela Rogora, Anne Merete S. Sjoeng and Heleen A. de Wit). 8 Distribution of Persistent Organic Pollutants and Mercury in Freshwater Ecosystems Under Changing Climate Conditions (Joan O. Grimalt, Jordi Catalan, Pilar Fernandez, Benjami Pina and John Munthe). 9 Climate Change: Defining Reference Conditions and Restoring Freshwater Ecosystems (Richard K. Johnson, Richard W. Battarbee, Helen Bennion, Daniel Hering, Merel B. Soons and Jos T.A. Verhoeven). 10 Modelling Catchment Scale Responses to Climate Change (Richard A. Skeffington, Andrew Wade, Paul G. Whitehead, Dan Butterfield, Oyvind Kaste, Hans Estrup Andersen, Katri Rankinen and Gael Grenouillet). 11 Tools for Better Decision Making: Bridges from Science to Policy (Conor Linstead, Edward Maltby, Helle Orsted Nielsen, Thomas Horlitz, Phoebe Koundouri, Ekin Birol, Kyriaki Remoundou, Ron Janssen and Philip J. Jones). 12 What of the Future? (Brian Moss).
    Type of Medium: Monograph available for loan
    Pages: xiii, 314 S.
    ISBN: 9781405179133
    Classification:
    Ecology
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
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    Heated aquatic microcosms for climate change experiments (2021)
    In:  http://aquaticcommons.org/id/eprint/4629 | 1256 | 2011-09-29 16:10:28 | 4629 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-05
    Description: Ponds and shallow lakes are likely to be strongly affected by climate change, and by increase in environmental temperature in particular. Hydrological regimes and nutrient cycling may be altered, plant and animal communities may undergo changes in both composition and dynamics, and long-term and difficult to reverse switches between alternative stable equilibria may occur. A thorough understanding of the potential effects of increased temperature on ponds and shallow lakes is desirable because these ecosystems are of immense importance throughout the world as sources of drinking water, and for their amenity and conservation value. This understanding can only come through experimental studies in which the effects of different temperature regimes are compared. This paper reports design details and operating characteristics of a recently constructed experimental facility consisting of 48 aquatic microcosms which mimic the pond and shallow lake environment. Thirty-two of the microcosms can be heated and regulated to simulate climate change scenarios, including those predicted for the UK. The authors also summarise the current and future experimental uses of the microcosms.
    Keywords: Ecology ; Limnology ; Earth Sciences ; Climatic changes ; Climate prediction ; Experimental research ; Microcosms ; Aquatic communities ; Ponds
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 51-58
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  • 3
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    Comparative studies on the structure of an upland African stream ecosystem (2021)
    In:  http://aquaticcommons.org/id/eprint/4686 | 1256 | 2011-09-29 16:05:06 | 4686 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-05
    Description: Upland stream systems have been extensively investigated in Europe, North America and Australasia and many of the central ideas concerning their function are based on these systems. One central paradigm, the river continuum concept is ultimately derived from those North American streams whose catchments remain forested with native vegetation. Streams of the tropics may or may not fit the model. They have been little studied. The Amani Nature Reserve in the East Usambara Mountains of north-eastern Tanzania offers an opportunity to bring these naturally forested systems to the attention of the ecological community. This article describes a comparison made between two lengths of the River Dodwe in this area. The work was carried out by a group of postgraduate students from eighteen European and African countries with advice from five staff members, as part of a course organised by the Tropical Biology Association. Rigorous efforts were made to standardise techniques, in a situation where equipment and laboratory facilities were very basic, through a management structure and deliberate allocation of work to specialists in each area.The article offers a summary of invertebrate communities found in the stream and its biomass. Crabs seem to be the key organism in both sections of the streams.
    Keywords: Ecology ; Limnology ; Freshwater crustaceans ; Taxonomy ; Biomass ; Rivers ; Flood plains ; Site surveys ; Tanzania ; River Dodwe
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 27-47
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  • 4
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    Comparative limnology of waters in a coniferous forest: is a generalisation possible? (2021)
    In:  http://aquaticcommons.org/id/eprint/4714 | 1256 | 2011-09-29 15:59:27 | 4714 | Freshwater Biological Association
    Details
    Publication Date: 2021-07-05
    Description: The high density of meres and mosses in the Delamere area comes from numerous moraine-hollows formed after the melting of stranded ice-blocks following last glaciation. The main vegetation is of conifers along with some deciduous species and the area was designated as a National Forest Park in 1987. It has been managed since the beginning of the 19th century and is a popular tourist area with walking, orienteering, cycling and educational activities. In recent years this forest park has been attracting over half a million people per year. This paper studies the limnology of different aquatic habitats in the Delamere Forest area in order to give some insight into the waters of a coniferous, temperate forest area, which has so far been largely unexplored. The authors assume therefore, thought that despite apparent large variability in origin, age, surface area, morphometry, catchment size and hydraulic regime, the waters of Delamere Forest might share some revealing chemical and biological features. Seven water-bodies in the Delamere Forest Park area, namely, Black Lake, Blakemere Moss, Delamere Lake, Delamere Quarry, Hatchmere, Windyhowe Farm Spring and Fir Brook were sampled, their water chemistry and dissolved organic carbon and the occurrence of phytoplankton and zooplankton species examined. In a final chapter the authors analyse their findings for patterns.
    Keywords: Ecology ; Limnology ; Freshwater lakes ; Environmental surveys ; pH ; Organic carbon ; Phytoplankton ; Zooplankton ; Forests ; England ; Cheshire
    Repository Name: AquaDocs
    Type: article , FALSE
    Format: application/pdf
    Format: application/pdf
    Format: 59-81
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  • 5
    Electronic Resource
    Electronic Resource
    Paleolimnology and trends in the phosphorus and iron budgets of an old man-made lake, Barton Broad, Norfolk (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 7 (1977), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. Barton Broad, Norfolk is a shallow, eutrophic lake. During the last 30 years submerged macrophytes have declined and phytoplankton numbers have increased. This change is traced through the stratigraphy of a 60-cm mud core. Diatom frustule counts of 1-cm sections of the core showed that an epiphyte-dominated diatom community was replaced by a planktonic community. From chemical analysis and radio-isotope dating of the core, sedimentation rates and past phosphorus and iron loadings are estimated. Sedimentation rates were between 1.2 mm and 3.1 mm year−1 during the early part of the core but doubled in the 1950s to 5 mm year−1, doubled again in the 1960s and have increased to 12 mm year−1 in the 1970s. Retention of phosphorus in the sediment increased from 0.5 g m−2 year−1 to 18–21 g m−2 year−1 in two steps. A similar trend is shown for iron. The diatom species composition and chemistry of the core sections are correlated with increased nutrient loading and the decline of macrophytes. Contemporary phosphorus and iron budgets are calculated from inflow–outflow data and balanced using sediment retentions estimated from the core data. It is believed a large proportion of phosphorus and iron enters the Broad by movement of sediment along the river bed. A reduction of 25% of the 1975 phosphorus loadings would probably permit re-establishment of some macrophytes. The present chemistry and algal communities of Barton Broad and the River Ant are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1977.tb01670.x
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  • 6
    Electronic Resource
    Electronic Resource
    The changing ecosystem of a shallow, brackish lake, Hickling Broad, Norfolk, U.K. II. Long-term trends in water chemistry and ecology and their implications for restoration of the lake (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 29 (1993), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 〈list xml:id="l1" style="custom"〉1 Hickling Broad underwent major changes from a clear water, charophyte-dominated state in the decades previous to 1970 to a turbid, phytoplankton-dominated state by the mid 1970s. These changes were complexly linked with increasing eutrophication by black-headed gulls and increased salinity due to agricultural changes in the catchment.2 At the turn of the 1970s, the lake began to change again and during the 1980s a submerged plant community, of tall, vigorously growing species (e.g. Myriophyllum spicatum, Patamogeton pectinatus) had recovered, despite a major reduction in the roosting gull population, no change in salinity, and only small reductions in phytoplankton biomass and total phosphorus concentration.3 Recovery of the plants may be linked to grazing of periphyton on them by an increased population of a mysid Neomysis integer which had been suppressed by toxicity from an alga, Prymnesium parvum formerly stimulated by the ingress of gull guano.4 A cladoceran community present in the clear-water phase has not recovered and may be suppressed by continued high salinities. Further restoration of the lake requires displacement of the large phytoplankton biomass and this might best be contemplated by land use changes leading to lowered salinity and predicted recovery of grazing Cladocera.5 Models are given which summarize the likely workings of the system in the early twentieth century, the mid-twentieth century, the 1970s and the late 1980s.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1993.tb00751.x
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  • 7
    Electronic Resource
    Electronic Resource
    Aspects of the ecology of Prymnesium parvum (Haptophyta) and water chemistry in the Norfolk Broads, England (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 8 (1978), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SUMMARY. Prymnesium parvum, an ichthyotoxic phytoplankter, has been recorded, at times abundantly, in the River Thurne, Norfolk, and its associated Broads. Its occurrence has been apparently more frequent and its population sizes probably larger since the late 1960s than previously and fish mortalities due to it now occur almost annually.The Thurne system is brackish and may have become more so, due to exploitation by drainage pumps, of a saline water table, in recent years. Evidence for this is conflicting, but in any case an increase in salinity is unlikely to have made increased Prymnesium growth more likely. Eutrophication of some Broads in the system is most likely to have increased the populations of Prymnesium since the late 1960s and data are presented on the present water chemistry of the system for comparison with previous records, and on current phytoplankton and Prymnesium crops in different parts of it. P. parvum has been isolated from the system as a unialgal culture and compared in morphology, salinity tolerance and ichthyotoxicity with a strain of P. parvum from Israel. The Broads strain differs slightly in size and pigmentation, but not in salinity tolerance. In culture it produces more ichthyotoxin than the Israeli strain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1978.tb01451.x
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  • 8
    Electronic Resource
    Electronic Resource
    The determination of total nitrogen and total phosphorus concentrations in freshwaters from land use, stock headage and population data: testing of a model for use in conservation and water quality management (1996)
    Oxford BSL : Blackwell Science Ltd
    Freshwater biology 36 (1996), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. Nutrient concentrations (particularly N and P) determine the extent to which water bodies are or may become eutrophic. Direct determination of nutrient content on a wide scale is labour intensive but the main sources of N and P are well known. This paper describes and tests an export coefficient model for prediction of total N and total P from: (i) land use, stock headage and human population; (ii) the export rates of N and P from these sources; and (iii) the river discharge. Such a model might be used to forecast the effects of changes in land use in the future and to hindcast past water quality to establish comparative or baseline states for the monitoring of change.2. The model has been calibrated against observed data for 1988 and validated against sets of observed data for a sequence of earlier years in ten British catchments varying from uplands through rolling, fertile lowlands to the flat topography of East Anglia.3. The model predicted total N and total P concentrations with high precision (〉 95% of the variance in observed data explained). It has been used in two forms: the first on a specific catchment basis; the second for a larger natural region which contains the catchment with the assumption that all catchments within that region will be similar. Both models gave similar results with little loss of precision in the latter case. This implies that it will be possible to describe the overall pattern of nutrient export in the UK with only a fraction of the effort needed to carry out the calculations for each individual water body.4. Comparison between land use, stock headage, population numbers and nutrient export for the ten catchments in the pre-war year of 1931, and for 1970 and 1988 show that there has been a substantial loss of rough grazing to fertilized temporary and permanent grasslands, an increase in the hectarage devoted to arable, consistent increases in the stocking of cattle and sheep and a marked movement of humans to these rural catchments.5. All of these trends have increased the flows of nutrients with more than a doubling of both total N and total P loads during the period. On average in these rural catchments, stock wastes have been the greatest contributors to both N and P exports, with cultivation the next most important source of N and people of P. Ratios of N to P were high in 1931 and remain little changed so that, in these catchments, phosphorus continues to be the nutrient most likely to control algal crops in standing waters supplied by the rivers studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2427.1996.00099.x
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  • 9
    Electronic Resource
    Electronic Resource
    Two mesocosm experiments investigating the control of summer phytoplankton growth in a small shallow lake (2004)
    Oxford, UK : Blackwell Science Ltd
    Freshwater biology 49 (2004), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. Mesocosm experiments were carried out to examine the relative importance of top down (fish predation) and bottom up (nutrient addition) controls on phytoplankton abundance in a small shallow lake, Little Mere, U.K., in 1998 and 1999. These experiments were part of a series at six sites across Europe.2. In the 1998 experiment, top-down processes (through grazing of large Cladocera) were important in determining phytoplankton biomass. The lack of plant refugia for zooplankton was probably important in causing an increasing chlorophyll a concentration even at intermediate fish density. Little Mere normally has abundant macrophytes but they failed to develop substantially during both years. Bottom-up control was not important in 1998, most probably because of high background nutrient concentrations, as a result of nutrient release from the sediments.3. In 1999 neither top-down nor bottom-up processes were significant in determining phytoplankton biomass. Large cladoceran grazers were absent even in the fish-free enclosures, probably because dominance of cyanobacteria and high phytoplankton biomass made feeding conditions unsuitable. As in 1998, bottom-up control of phytoplankton was not important, owing to background nutrient concentrations that were even higher in 1999 than in 1998, perhaps because of the warmer, sunnier weather.4. The differing outcomes of the two experiments in the same lake with similar experimental designs highlight the importance of starting conditions. These conditions in turn depended on overall weather conditions prior to the experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.2004.01298.x
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  • 10
    Electronic Resource
    Electronic Resource
    Changes in a deep lake following sewage diversion – a challenge to the orthodoxy of external phosphorus control as a restoration strategy? (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Freshwater biology 34 (1995), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. The restoration of deep lakes has traditionally focused on reducing the external phosphorus loading.2. Following the diversion of sewage effluent, that led to marked reductions in nutrient concentrations in its main inflow, Rostherne Mere has shown no reduction in phosphorus or chlorophyll a concentrations. A shallow lake upstream (Little Mere), however, has shown a marked response to effluent diversion.3. Nutrient budgets for Rostherne Mere reveal that sewage effluent was by far the most significant external source of total phosphorus and that diffuse drainage from the catchment was the most significant external source of dissolved inorganic nitrogen. Phosphorus loads from groundwater and a bird roost were insignificant. Internal sources of phosphorus were, however, considerable and were largely responsible for the observed delay in recovery.4. Phosphorus limitation of phytoplankton biomass may never be attainable because of substantial internal and diffuse sources of phosphorus, combined with a long retention time. Nitrogen is likely to be more important in limiting phytoplankton biomass. Control of diffuse nitrogen sources may therefore be more effective in the restoration of the deeper lakes of this region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2427.1995.tb00898.x
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