Results 71 to 80 of about 4,387 (205)

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

Allelopathic effects of phenolic compounds present in submerged macrophytes on Microcystis aeruginosa [PDF]

, 2009
In laboratory studies, the allelopathic effects of 3 (Hydrocharitaceae family) submerged macrophytes (Elodea nuttallii (Planch) St. John, Hydrilla verticillata (L.f.) Royle and Vallisneria spiralis L.) were investigated on two strains of Microcystis ...
Liu, B. Y., Wu, Z. B., Gao, Y. N., Zhang, Y. Y., Zhou, Q. H., Wang, J., Wu, ZB, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China   +6 more
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Restoration and rehabilitation of floodplain wetlands: a systematic, global review of restoration options and their outcomes

Restoration Ecology, EarlyView.
Abstract Introduction Floodplain wetlands are vitally important, highly productive, and biodiverse ecosystems. Species dependent on them are facing a range of threats including water extraction, habitat degradation, invasive species, and shifting climates.
Sally Maxwell, Saúl Gonzalez Murcia, Samuel Lewis, Michael Shackleton, Nick Bond   +4 more
wiley   +1 more source

Effects of submerged macrophytes on kinetics of alkaline phosphatase in Lake Donghu - I. Unfiltered water and sediments [PDF]

, 2000
The impacts of submerged macrophytes on kinetics of alkaline phosphatase were studied in two 680 m(2) enclosures in a shallow Chinese freshwater lake (Donghu Lake) from April to October 1996, and two experimental pools (120 m(2)) built inland in 1998 ...
Zhou, YY, Chinese Acad Sci, Lake Donghu Ecosyst Expt Stn, Inst Hydrobiol, Wuhan 430072, Peoples R China, Fu, YQ, Li, JQ, Zhou, YY   +3 more
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Nutrients and warm temperatures explain a seasonal cycle of colonization and ecosystem collapse in a floodplain pond

Ecosphere
Resilient ecosystems maintain similar species diversity and composition despite extreme environmental variation, while ecosystem collapse can be characterized by high mortality rates and decreased species diversity.
Russell B. Rader, D. Riley Rackliffe
doaj   +1 more source

Changes in food‐web pathways and ecosystem functions after sidearm re‐connection in a large river (Danube, Austria)

Restoration Ecology, EarlyView.
Abstract Introduction River regulation schemes generally led to changes in riverine assemblage composition and their trophic status, which often is reflected in a general loss or decrease of characteristic species and a concomitant increase or dominance of generalist species.
Hubert Keckeis, Andrea Funk, Elisabeth Bondar Kunze, Marcel Liedermann, Michael Tritthart, David Ramler, Helmut Habersack, Thomas Hein   +7 more
wiley   +1 more source

Early results and lessons learned from biomanipulation and chemical restoration of a eutrophic shallow lake

Restoration Ecology, EarlyView.
Abstract Introduction Over 44% of European lakes fail to meet ecological quality standards, prompting substantial investment in lake restoration to achieve good ecological status. Unfortunately, effects are often short‐lived due to persistent internal phosphorus (P) loading and strong cyprinid‐driven bottom‐up control, which limits water quality ...
Emma Polauke, Kaj Sand‐Jensen, Christian Skov, Theis Kragh   +3 more
wiley   +1 more source

Aquatic ecosystem responds differently to press and pulse nutrient disturbances as revealed by a microcosm experiment

Ecology and Evolution, 2022
Due to climate change and increasing anthropogenic activities, lakes are disturbed frequently, usually by press (e.g., diffused pollution, rising temperatures) or pulse (e.g., storms, rainfall, pollution events) disturbances.
Yu Zhao, Rong Wang, Enlou Zhang, Baohua Guan, Min Xu   +4 more
doaj   +1 more source

Organic‐matter sources and stability in kettle‐hole sediments: A combined thermogravimetric and isotopic approach

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Kettle‐holes are small but biogeochemically active landscape elements that integrate terrestrial inputs and influence carbon and nitrogen cycling. However, the stability and sources of organic matter (OM) in kettle‐hole sediments remain poorly understood.
Safdar Bashir, Kai Nils Nitzsche, Zachary Kayler   +2 more
wiley   +1 more source

Generation of reactive oxygen species in cyanobacteria and green algae induced by allelochemicals of submerged macrophytes [PDF]

, 2011
Inhibition of phytoplankton by allelochemicals released by submerged macrophytes is reported to be one of the mechanisms that maintain a clear-water state in shallow lakes. In order to elucidate this mechanism, the ability of six polyphenols and two long-
Zhu, Junying (1), Liu, Shaoping (3), Liu, Biyun (1), Wu, Zhenbin (1), Gao, Yunni (1), Wang, Jing (1), Wu, Z.(wuzb@ihb.ac.cn)   +6 more
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