Results 61 to 70 of about 4,379 (224)

Low breeding propensity in a declining Arctic‐breeding swan revealed by telemetry data

Ibis, EarlyView.
Many migratory bird populations are declining in the face of habitat degradation and climate change, making it important to identify which stages of their annual cycle are most affected in order to guide conservation measures. The Bewick's Swan Cygnus columbianus bewickii, an Arctic‐breeding waterfowl species, has suffered a dramatic population decline
Tohar Tal, Bart A. Nolet, Tom S.L. Versluijs, Judy Z. Shamoun‐Baranes, Götz Eichhorn, Sabine Urban, Hans Linssen   +6 more
wiley   +1 more source

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

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

Macrophytes as biological indicators of organic pollution in the Lepenci River Basin in Kosovo

Journal of Freshwater Ecology, 2020
Macrophytes represent one part of the biological quality elements defined by the European Water Framework Directive (WFD) as ‘macrophytes and phytobenthos’.
Pajtim Bytyqi, Marton Czikkely, Albona Shala-Abazi, Osman Fetoshi, Murtezan Ismaili, Mimoza Hyseni-Spahiu, Prespa Ymeri, Edona Kabashi-Kastrati, Fadil Millaku   +8 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

macrophyte

Citation: 'macrophyte' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14826 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +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

Azolla as a beneficial macrophyte for livestock feed: a review

Cogent Food & Agriculture
Livestock plays a significant role in the livelihood enhancement of the people, especially in rural areas. The requirement for dietary protein for people from the animal sources is expected to increase. However, due to problems of feed shortages and high
Sale Alebachew Chekol, Teshager Zerihun Nigussie, Bernabas Aynshet Fenta   +2 more
doaj   +1 more source

Adaptations of morphology, anatomy and phytochemical composition of leaves of Stratiotes aloides L. emergent forms

Limnological Review, 2019
Interdisciplinary research was carried out on the impact of climate on the diversity and morphology of Stratiotes aloides L. emergent forms’ phenotype in various latitudes. The objectives of the research were: 1.
Toma Cezary, Efremov Andrey, Wojnar Weronika   +2 more
doaj   +1 more source

Fish and macrophyte assessment of Ciuperca Lake after rehabilitation works (Tulcea City, Romania)

Scientific Annals of the Danube Delta Institute, 2016
In order to improve the quality of life, in urban ranges, there is a continuous effort for smallscale leisure areas maintenance in the benefit of inhabitants by means of provided environmental, social and psychological services.
NASTASE Aurel, DOROFTEI Mihai, TEOFOROF Liliana, , BURADA Adrian, DESPINA Cristina   +4 more
doaj   +1 more source