Results 101 to 110 of about 22,317 (250)

Changes in invertebrate assemblage composition in benthic and hyporheic zones during a severe supraseasonal drought [PDF]

, 2014
Droughts are unpredictable disturbances characterized in streams by declining flow, reduced habitat availability, and deteriorating abiotic conditions.
Boulton, AJ, Little, S, Stubbington, R, Wood, PJ   +3 more
core   +2 more sources

Points vs. passes: A comparison between electric fishing techniques for sampling fish populations in upland headwater streams

Journal of Fish Biology, EarlyView.
Abstract Point‐abundance sampling by electric fishing (PASE) was compared with single‐pass (DF1) and triple‐pass depletion sampling (DF3) electric fishing on the same reaches of four headwater streams sampled over multiple years in the Ribble catchment, UK. Juvenile salmonids, mostly brown trout Salmo trutta with some Atlantic salmon S.
Reagan H. Pearce, Martin R. Perrow, Mark L. Tomlinson, Kirsty A. Turner   +3 more
wiley   +1 more source

A new substrate for sampling deep river macroinvertebrates [PDF]

, 2009
We compared macroinvertebrate communities colonising multiplate samplers constructed from perspex or tempered hardboard (wood) with an alternative artificial substrate constructed from folded coconut fibre matting (coir) enclosed in nylon netting ...
Chadderton, W. Lindsay, Collier, Kevin J., Hamer, Mark P.   +2 more
core   +2 more sources

Distributional patterns and habitat associations of sturgeon chub in western Missouri River tributaries of South Dakota

Journal of Fish Biology, EarlyView.
Abstract There is a growing body of literature that suggests riverine fish are some of the most threatened taxa on a global scale. Similarly, the literature suggests less‐altered tributaries may offer refugia for large‐river specialists. The greater Mississippi River basin, including the Missouri River system, has been subjected to anthropogenic ...
Mitchell R. Magruder, Jenna P. Ruoss, Mark A. Pegg   +2 more
wiley   +1 more source

Short‐term performance responses of an intertidal fish to sedimentation and warming

Journal of Fish Biology, EarlyView.
Abstract Climate change is altering coastal ecosystems by causing environmental fluctuations, such as increases in temperature and turbidity, which pose major implications for fish physiology and behaviour. Increases in temperature affect fish food intake, swimming capacity and oxygen delivery, while increases in turbidity can impair or enhance prey ...
Anna Carolina Resende, Lucy Campbell, Catarina Vinagre, Alice Rogers   +3 more
wiley   +1 more source

Benthic macroinvertebrates in seven New Zealand lakes [PDF]

New Zealand Journal of Marine and Freshwater Research, 1978
Abstract The benthic macroinvertebrate faunas of seven Rqtorua lakes (Okataina, Rotoma, Tikitapu, Okareka, Rotokakahi, Ngapouri, and Okaro) were investigated by Ekman dredge at monthly intervals between May 1970 and May 1971. The main groups present were molluscs, oligochaete worms, and chironomid larvae.
openaire   +1 more source

Feasibility of restoring native oyster reefs in highly modified urban estuaries

Restoration Ecology, EarlyView.
Abstract Introduction Urbanized estuaries are highly altered systems characterized by modified shorelines, degraded marine habitats, and abundant non‐native species. In South Australia's largest urbanized estuary, community‐based restoration initiatives aim to restore native flat oyster reefs (Ostrea angasi) lost over a century ago.
Ishtar Kenny, Sean D. Connell, Dominic McAfee   +2 more
wiley   +1 more source

Individual and combined effects of shading and habitat complexity on benthic macroinvertebrate communities in a mesocosm stream experiment (São Paulo, Brazil)

Restoration Ecology, EarlyView.
Abstract Introduction Agricultural activities are a major driver of biodiversity loss and ecosystem degradation in subtropical streams, often altering macroinvertebrate community structure and associated ecosystem functions. Although restoration strategies increasingly target these impacts, the relative importance of riparian shading and in‐stream ...
Mariana Morilla, Karoline V. Serpa, Matheus E. K. Ogasawara, Jeremy J. Piggott, Marcin Penk, Marcelo S. Moretti, Christoph D. Matthaei, Silvio F. B. Ferraz, Ricardo H. Taniwaki   +8 more
wiley   +1 more source

Ecosystem recovery in restored saltmarshes detected through invertebrate communities

Restoration Ecology, EarlyView.
Abstract Introduction Saltmarsh ecosystems support rich biodiversity and provide key ecosystem services. Invertebrate communities underpin essential processes such as nutrient cycling and decomposition. However, saltmarshes have been widely degraded by land use change.
Agustina Quadri‐Adrogue, Stacey M. Trevathan‐Tackett, Kristian Bell, Melissa Wartman   +3 more
wiley   +1 more source

The impact of cattle drinking points on aquatic macroinvertebrates in streams in south-east Ireland [PDF]

, 2019
peer-reviewedTeagasc PublicationMeasures that prevent cattle access to watercourses are commonly implemented through agri-environment schemes, in an effort to address the objectives of the Water Framework Directive. Despite the widespread implementation,
Finn, John, Harrison, S., Madden, D., Ó hUallacháin, D.   +3 more
core   +2 more sources