Freshwater Biology

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Attribute‐based classification of European hydrophytes and its relationship to habitat utilization
Freshwater Biology - Tập 43 Số 1 - Trang 43-74 - 2000
Nigel Willby, Vicky J. Abernethy, Benoît O. L. Demars
SUMMARYHere we classify selected European hydrophytes into ‘attribute groups’ based on the possession of homogenous sets of characteristics, and explore the correspondence between these attribute groups, or individual attributes, and habitat use.Non‐hiera...... hiện toàn bộ
The macrophytic vegetation of the River Tees in 1975: observed and predicted changes
Freshwater Biology - Tập 7 Số 1 - Trang 43-60 - 1977
Nigel Holmes, Brian A. Whitton
SUMMARY. An account is given of the distribution of macrophytes in the River Tees and its tributaries, north‐east England, together with a critical discussion of the problems involved in recording data in a form which can be used for monitoring long‐term changes of vegetation in rivers. Among the conventions and methods adopted in the present study are an attempt to...... hiện toàn bộ
A fuzzy coding approach for the analysis of long‐term ecological data
Freshwater Biology - Tập 31 Số 3 - Trang 295-309 - 1994
François Chevenet, SYLVAIN DOLÉADEC, Daniel Chessel
SUMMARY We present an unconventional procedure (fuzzy coding) to structure biological and environmental information, which uses positive scores to describe the affinity of a species for different modalities (i.e. categories) of a given variable. Fuzzy coding is essential for the synthesis of long‐term e...... hiện toàn bộ
The effect of evapoconcentration on dissolved organic carbon concentration and quality in lakes of SW Greenland
Freshwater Biology - Tập 52 Số 2 - Trang 280-289 - 2007
N. John Anderson, Colin A. Stedmon
Summary1. Dissolved organic carbon (DOC) concentration was determined for a range of lakes of varying conductivity (30–4000 μS cm−1) in the low Arctic of SW Greenland. DOC concentration range from <1 to >100 mg C L−1, occasionally approaching 200 mg C L−1 in meromictic, ...... hiện toàn bộ
Spatial and temporal impacts of a diesel fuel spill on stream invertebrates
Freshwater Biology - Tập 46 Số 5 - Trang 693-704 - 2001
David A. Lytle, Barbara L. Peckarsky
1. We assessed the effects of a 26 500 L diesel fuel spill on the macroinvertebrate fauna of a small trout stream in central New York, U.S.A. To determine the spatial extent of the spill we sampled three locations (0.7, 5.0 and 11.8 km downstream of the spill), each containing a reference site (unaffected tributary) and an impact site (downstream of spill). Sampling was repeated four times...... hiện toàn bộ
Incorporating thermal regimes into environmental flows assessments: modifying dam operations to restore freshwater ecosystem integrity
Freshwater Biology - Tập 55 Số 1 - Trang 86-107 - 2010
Julian D. Olden, Robert J. Naiman
Summary1. Despite escalating conflict over fresh water, recent years have witnessed a growing realisation that human society must modify its behaviour to ensure long‐term ecological vitality of riverine ecosystems. In response, ecologists have been increasingly asked to guide instream flow management by providing ‘environmental flow’ prescriptions for sustaining th...... hiện toàn bộ
Genetic diversity and migration patterns of the aquatic macrophyte Potamogeton malaianus in a potamo‐lacustrine system
Freshwater Biology - Tập 54 Số 6 - Trang 1178-1188 - 2009
Yuanyuan Chen, Xiuling Li, Liyan Yin, Yu Cheng, Wei Li
Summary1. Previously, the Yangtze River connected thousands of shallow lakes which together formed a potamo‐lacustrine system capable of sustaining a rich variety of submerged macrophytes.2. Potamogeton malaianus is one of the dominant submerged macrophytes in many lakes of this area. Genetic variation and population stru...... hiện toàn bộ
The turbulent boundary between water science and water management
Freshwater Biology - Tập 24 Số 1 - Trang 201-209 - 1990
Peter Cullen
SUMMARY. 1. It is common to observe friction between limnologists and the managers of water resources. This is often a result of misunderstandings about the cultures within which each works.2. There are a number of ways that science can contribute to effective management of water resources, but limnologists must appreciate that there are value quest...... hiện toàn bộ
Classification of natural flow regimes in Australia to support environmental flow management
Freshwater Biology - Tập 55 Số 1 - Trang 171-193 - 2010
Mark J. Kennard, Bradley J. Pusey, Julian D. Olden, Stephen Mackay, Janet Stein, Nick Marsh
Summary1. The importance of hydrologic variability for shaping the biophysical attributes and functioning of riverine ecosystems is well recognised by ecologists and water resource managers. In addition to the ecological dependences of flow for aquatic organisms, human societies modify natural flow regimes to provide dependable ecological services, including water ...... hiện toàn bộ
Ecological responses to altered flow regimes: a literature review to inform the science and management of environmental flows
Freshwater Biology - Tập 55 Số 1 - Trang 194-205 - 2010
N. LeRoy Poff, Julie K. H. Zimmerman
Summary1. In an effort to develop quantitative relationships between various kinds of flow alteration and ecological responses, we reviewed 165 papers published over the last four decades, with a focus on more recent papers. Our aim was to determine if general relationships could be drawn from disparate case studies in the literature that might inform environmental...... hiện toàn bộ
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