Freshwater Biology

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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
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
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
Interspecific and intraspecific variations in egg hatching for British populations of the stoneflies Siphonoperla torrentium and Chloroperia tripunctata (Plecoptera: Chloroperiidae)
Freshwater Biology - Tập 20 Số 1 - Trang 11-18 - 1988
J. M. Elliott
SUMMARY 1. The objective was to compare variations in egg hatching between the two species (interspecific variations) and between populations of the same species (intraspecific variations). There were significant interspecific, but not intraspecific, differences in female size, adult life‐span, egg production, hatching success, incubation periods and hatching periods...... hiện toàn bộ
Climate‐induced changes in the distribution of freshwater fish: observed and predicted trends
Freshwater Biology - Tập 58 Số 4 - Trang 625-639 - 2013
Lise Comte, Laëtitia Buisson, Martín Daufresne, Gaël Grenouillet
Summary1. Climate change could be one of the main threats faced by aquatic ecosystems and freshwater biodiversity. Improved understanding, monitoring and forecasting of its effects are thus crucial for researchers, policy makers and biodiversity managers.2. Here, we provide a review and some meta‐analyses of the literature reporting both observed a...... hiện toàn bộ
Biological and ecological traits of benthic freshwater macroinvertebrates: relationships and definition of groups with similar traits
Freshwater Biology - Tập 43 Số 2 - Trang 175-205 - 2000
Philippe Usseglio‐Polatera, Michel Bournaud, Philippe Richoux, Henri Tachet
Assessing the consistency of response metrics of the invertebrate benthos: a comparison of trait‐ and identity‐based measures
Freshwater Biology - Tập 55 Số 7 - Trang 1420-1429 - 2010
Amina I. Pollard, Lester L. Yuan
Summary1. The use of species traits to interpret biological changes in invertebrate assemblages across environmental gradients has been suggested as a method to improve discrimination over existing species composition methods. One reason for greater potential discrimination and predictive ability is the assumed universality of traits across a range of spatial and t...... hiện toàn bộ
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