Results 71 to 80 of about 369,774 (248)

Conservation and ecological screening of small water bodies in temperate riverine wetlands using UAV Photogrammetry (Middle Danube) [PDF]

Nature Conservation
Aquatic ecosystems in riverine wetlands are important refuges and nurseries for freshwater biota. Given the significant global loss and degradation of wetlands, regular conservation assessments of these habitats, even in not easily accessible regions ...
Dušanka Cvijanović, Maja Novković, Djuradj Milošević, Milica Stojković Piperac, Laszlo Galambos, Dubravka Čerba, Olivera Stamenković, Bojan Damnjanović, Minučer Mesaroš, Dragoslav Pavić, Vladica Simić, Ivana Trbojević, Ana Anđelković, Nusret Drešković, Barbara Stammel, Bernd Cyffka, Snežana Radulović   +16 more
doaj   +3 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

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

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

Habitat architecture influencing microcrustaceans composition: a case study on freshwater Cladocera (Crustacea Branchiopoda)

Brazilian Journal of Biology
Environmental complexity is considered a key factor for diversity enhancement in aquatic ecosystems. Macrophyte stands are a major contributor for this complexity due to their differential architectures.
J. R. Debastiani-Júnior, L. M. A. Elmoor-Loureiro, M. G. Nogueira   +2 more
doaj   +1 more source

Modelling relationships between juvenile brown trout (Salmo trutta L.) density and landscape characteristics: Integration of electrofishing data and spatial data to assess population status

Journal of Fish Biology, EarlyView.
Abstract Brown trout (Salmo trutta L.) are ecologically and economically important, but like many salmonids their populations are declining. Trout exhibit a high level of phenotypic plasticity, ranging from freshwater residency to anadromy. This complexity causes problems for assessment and constrains application of adult catch‐based assessment methods
Faye L. Jackson, Robert J. Fryer, Lawrence J. B. Eagle, Iain A. Malcolm   +3 more
wiley   +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

Evaluation of the potential of Pontederia parviflora Alexander in the absorption of copper (Cu) and its effects on tissues - doi: 10.4025/actascibiolsci.v32i3.3940

Acta Scientiarum: Biological Sciences, 2010
The study sought to evaluate the potential of the aquatic macrophyte Pontederia parviflora Alexander in the absorption of copper (Cu) and possible variations in its tissues after 21 days of exposure to this metal.
Graziela Custodio Balassa, Débora Cristina de Souza, Sônia Barbosa de Lima   +2 more
doaj   +1 more source

Duckweeds under salt stress: a meta‐analysis of growth inhibition in relation to morphological and physiological traits and a systematic review of molecular responses

New Phytologist, EarlyView.
Salinity reduces duckweed growth responses. Summary Salinity is one of the main environmental factors limiting the performance of duckweeds and despite growing ecological and biotechnological interest in these macrophytes, there is a lack of quantitative analyses of their responses to sodium chloride.
Saimon Branco Bueno, Alice Pita‐Barbosa, Ana Paula Roschildt, Daniel Burd Villanova, Janaina Cardozo de Mello, Alex Lindor, Tanise Luísa Sausen, Junior Borella   +7 more
wiley   +1 more source

Belowground growth is the primary driver of radial oxygen loss from Typha angustifolia to sediment

New Phytologist, EarlyView.
Oxygen pool accompanying the growth of a new Typha angustifolia rhizome through anoxic sediment. Summary Wetland plants must supply oxygen to their rhizomes and roots to maintain aerobic respiration despite soil anoxia. Excess oxygen can diffuse into the environment, strongly affecting rhizosphere biogeochemistry.
Ilana R. Stein, Zoe G. Cardon
wiley   +1 more source