Results 51 to 60 of about 369,245 (180)

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

Limnology and Oceanography: Methods, EarlyView.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop, Bridget R. Deemer, Theodore A. Kennedy, Robert A. Payn, Robert O. Hall Jr., Charles B. Yackulic   +5 more
wiley   +1 more source

Aquatic macrophytes and trophic interactions: a scientometric analyses and research perspectives

Brazilian Journal of Biology, 2018
Aquatic macrophytes have a recognized role in ecosystem structuring and an important position in trophic cascades interactions, whose understanding is to improve water quality.
C. M. C. Rocha, D. Lima, M. C. C. Cunha, J. S. Almeida   +3 more
doaj   +1 more source

Integrating and assessing metacommunity drivers of ecosystem function and resilience in benthic algal systems

Oikos, EarlyView.
Understanding the scales and mechanisms by which species composition interacts with ecosystem functions is critical for forecasting the effects of environmental perturbations on ecosystem services. However, the linkages between what regulates the ecosystem functions of dispersal‐capable networks of communities (metacommunities) and what regulates a ...
Thomas P. Shannon, Evelyn E. Gaiser
wiley   +1 more source

Oxygen demand during mineralization of aquatic macrophytes from an oxbow lake

Brazilian Journal of Biology
This study presents a kinetic model of oxygen consumption during aerobic decomposition of detritus from seven species of aquatic macrophytes: Cabomba furcata, Cyperus giganteus, Egeria najas, Eichhornia azurea, Salvinia auriculata, Oxycaryum cubense and ...
I. Bianchini Jr., MB. Cunha-Santino, AM. Peret   +2 more
doaj   +1 more source

Role of macrophyte life forms in driving periphytic microalgal assemblages in a Brazilian reservoir

Journal of Limnology, 2015
Macrophytes play several roles in aquatic ecosystems, including the provision of habitat for many aquatic organisms, especially the periphyton. The aims of this study were to characterize the structure of periphytic microalgal assemblages on different ...
Ubirajara L. Fernandes, Elaine C.C. de Oliveira, Sírleis R. Lacerda   +2 more
doaj   +1 more source

A Multi‐Method Approach to Assessing Barrier Effectiveness in Preventing the Spread of Invasive Signal Crayfish (Pacifastacus leniusculus)

River Research and Applications, EarlyView.
ABSTRACT Relieving barriers and increasing free flowing rivers is a global imperative to restore habitat connectivity for migratory fish stocks. While reducing river fragmentation will certainly improve biodiversity, the spread of non‐native species throughout a river system may be facilitated as an inadvertent outcome.
Matthew Harwood, Andrew W. Bray, Karis A. Woolfenden, Paul D. Stebbing, Alison M. Dunn, Josie South   +5 more
wiley   +1 more source

Temporal changes of aquatic macrophytes vegetation in a Iowland groundwater feed eutrophic course (Klátovské rameno, Slovakia)

Acta Societatis Botanicorum Poloniae, 2011
Klátovské rameno is the lowland slow-flowing groundwater feed eutrophic tributary of the Malý Dunaj River (Danube Plain), where our study of temporal changes of aquatic macrophytes vegetation was realised in 1999 and 2005.
Helena Oťahel'ová, Richard Hrivnák, Milan Valachovič, Georg A. Janauer   +3 more
doaj   +1 more source

A Macroinvertebrate‐Based Flow Index Elucidates Responses to Environmental Water in a Highly Regulated River

River Research and Applications, EarlyView.
ABSTRACT Macroinvertebrate‐based flow indices have potential application to guiding environmental flow allocations and monitoring their effectiveness, but their sensitivity to such flows has seldom been tested. We examined the response of the Australian Macroinvertebrate Flow Index (AMFI), calculated from family‐level data, to three stages of ...
Bruce C. Chessman, Andrew J. Brooks, Daniel W. Coleman, Matthew D. Russell   +3 more
wiley   +1 more source

Potential effects of mechanically removing macrophytes on the phytoplankton community of a subtropical reservoir

Acta Botânica Brasílica, 2018
Intensive growth of aquatic macrophytes interferes with water quality and ecosystem dynamics worldwide. Although mechanically removing macrophytes is the most commonly used method for their eradication, it can also cause undesirable disturbances in ...
Juliana Wojciechowski, Tamires Marcela Burda, Mauricio Bergamini Scheer, Elaine Aparecida Dias da Costa, Luciano Felício Fernandes   +4 more
doaj   +1 more source

Environmental Stressors Influence Spatial Complexity in a Fluvial Macrophyte meadow

Remote Sensing in Ecology and Conservation, EarlyView.
This research investigates the nonlinear relationships between environmental stressors and the fine‐scale spatial complexity of a fluvial macrophytes meadow. The use of multivariate spatial analysis allowed us to identify two major environmental gradients (nutrients and light) and two major complexity gradients (related to abundance and fragmentation).
Arthur de Grandpré, Christophe Kinnard, Andrea Bertolo   +2 more
wiley   +1 more source