Results 71 to 80 of about 18,131 (259)

Water Quality Improvements and Hydrogeomorphic Change Over 20 Years Contributed to Macrophyte Community Recovery in the Upper Mississippi River [PDF]

Global change biology.
Re‐oligotrophication drove strong recovery of macrophyte communities in the Upper Mississippi River, increasing plant diversity and shifting dominance toward submersed species. This ecosystem‐wide transition signals biological recovery from improved water quality.
Larson D, Jones M, Weigel B, Gray B, Ovaskainen O.   +4 more
europepmc   +2 more sources

Dragonfly taxonomic and functional responses to urbanized streams in southeastern Europe, with management recommendations

Insect Conservation and Diversity, EarlyView.
Urbanization drives turnover in dragonfly species composition, traits, and habitat conservation value. Natural stream sections have a higher conservation value (higher DBI) due to presence of specialists. Properly managed urban streams can support diverse dragonfly assemblages.
Marina Vilenica, Andreja Brigić, Lea Ružanović, Renata Matoničkin Kepčija, Greet De Knijf, Michael J. Samways   +5 more
wiley   +1 more source

Harnessing Chara globularis: Sustainable biomass harvest for water quality management and organic fertilizer production in Lake Titicaca

Manglar
Chara globularis, a submerged macroalga dominant in high-Andean lakes, generates controversial effects on freshwater ecosystems. Although its dense coverage alters water chemistry and reduces biodiversity, its abundant biomass offers an opportunity for ...
Angel Canales-Gutiérrez, Marisol Chambi-Alarcón, Gelvi Canales-Manchuria   +2 more
doaj   +1 more source

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

Monitoring Spatial Variability and Temporal Dynamics of Phragmites Using Unmanned Aerial Vehicles

Frontiers in Plant Science, 2018
Littoral zones of freshwater lakes are exposed to environmental impacts from both terrestrial and aquatic sides, while substantial anthropogenic pressure also affects the high spatial, and temporal variability of the ecotone.
Viktor R. Tóth
doaj   +1 more source

A functional perspective on the factors underpinning biomass-bound carbon stocks in coastal macrophyte communities

Coastal ecosystems have received international interest for their possible role in climate change mitigation, highlighting the importance of being able to assess and predict how changes in habitat distributions and their associated communities may impact
Norkko, Alf, Lammerant, Roel, Gustafsson, Camilla   +2 more
core   +1 more source

Macrophyte controls on urban stream microbial metabolic activity

, 2021
Urban rivers worldwide are affected directly by macrophyte growth, causing reduced flow velocity and risks of flooding. Therefore, cutting macrophytes is a common management practice to ensure free drainage. The impacts of macrophyte removal on transient
Krause, Stefan; id_orcid, Romeijn, Paul, Hannah, David M.; id_orcid, Stefan Krause, David M. Hannah, Paul Romeijn   +5 more
core   +1 more source

Maximal Swimming Speed Explains Differences in Habitat Use Among Invasive Ponto‐Caspian Dikerogammarus Species (Crustacea, Amphipoda)

Journal of Zoology, EarlyView.
The three invasive Ponto‐Caspian Dikerogammarus species (D. bispinosus, D. haemobaphes, and D. villosus) show niche differentiation along the current velocity gradient. In the present study, we experimentally measured their maximal swimming speeds to test whether they coincide with their tolerances for currents.
Milán Kerekes, James W. E. Dickey, Ádám Egri, Péter Borza   +3 more
wiley   +1 more source

Macrophyte-induced thermal stratification in a shallow urban lake promotes conditions suitable for nitrogen-fixing cyanobacteria

, 2018
© 2017, Springer International Publishing AG. Densely vegetated shallow lakes often experience low water column nutrient levels and reduced phytoplankton growth, but in some cases a high phytoplankton biomass can co-exist with subme rged macrophytes. The
Clelia Marti (23466022), C. Oldham (23466310), M. Hipsey (23456788), M. Vilas (23466565)   +3 more
core  

For colonization success, should hosts and microbes travel alone, together, or swap partners along the way?

New Phytologist, EarlyView.
Experimental co‐introduction of duckweeds (Lemna japonica) and their microbiome in a common pond. Summary Microbiomes that enhance the performance of host plants are likely to be co‐introduced with their host during colonization because of their intimate association.
Takuji Usui, Jingcheng Yu, Megan E. Frederickson   +2 more
wiley   +1 more source