Results 111 to 120 of about 68,675 (329)

An approach to the use of macrophytes for monitoring standing waters [PDF]

open access: yes, 2001
Under the EC Water Framework Directive (WFD), each Member State is required to devise a comprehensive national monitoring programme for surface waters, incorporating hydromorphological, physico-chemical and biological elements.
Palmer, Margaret A.
core  

Skistodiaptomus pallidus (Copepoda: Diaptomidae) establishment in New Zealand natural lakes, and its effects on zooplankton community composition [PDF]

open access: yes, 2014
The North American calanoid copepod Skistodiaptomus pallidus is an emerging invader globally, with non-indigenous populations recorded from constructed waters in New Zealand, Germany and Mexico since 2000. We examined the effects of S.
Duggan, Ian C.   +4 more
core   +2 more sources

Unexpected trophic diversity in the endemic fish Orestias chungarensis in a high‐altitude freshwater ecosystem, Lake Chungará (4520 m), northern Chile

open access: yesJournal of Fish Biology, EarlyView.
Abstract Orestias chungarensis Vila & Pinto, 1986 is a small‐bodied (max fork length = 120 mm) cyprinodontiform fish with a very restricted global distribution. The species is limited to a single, small (283 km2), high‐altitude (4520 m) catchment located in the Altiplano of northern Chile. Until the late 20th century, O.
Karina González   +2 more
wiley   +1 more source

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

open access: yesLimnological 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   +2 more
doaj   +1 more source

Molecular phylogeny reveals a new species of ghost electric knifefish Porotergus Ellis 1912 (Gymnotiformes: Apteronotidae), from the Amazon basin

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of ghost electric knifefish, Porotergus sambaibensis sp. nov., is described from the Javaés River, a tributary of the Araguaia River in Brazil. The new species was assigned to the genus Porotergus as the closest relative to Porotergus gimbeli through maximum likelihood reconstruction of a concatenated multilocus dataset ...
Marina B. Mendonça   +4 more
wiley   +1 more source

Gravel pits support waterbird diversity in an urban landscape [PDF]

open access: yes, 2009
We assessed the benefit of 11 gravel pits for the settlement of waterbird communities in an urbanized area lacking natural wetlands. Gravel pits captured 57% of the regional species pool of aquatic birds.
A. Gaujard   +22 more
core   +4 more sources

Drivers of the range expansion of the European catfish (Silurus glanis) within its native distribution

open access: yesJournal of Fish Biology, EarlyView.
Abstract The European catfish Silurus glanis L. continues to spread as an invasive species in Europe. Meanwhile, increasing abundance and range expansions are also suspected within its native distribution. The objective of this study was to characterize the feeding, growth and abundance of S.
Jan Baer   +4 more
wiley   +1 more source

Retrospective assessment of macrophytic communities in southern Lake Garda (Italy) from in situ and MIVIS (Multispectral Infrared and Visible Imaging Spectrometer) data

open access: yesJournal of Limnology, 2012
In situ and hyperspectral MIVIS (Multispectral Infrared and Visible Imaging Spectrometer) images acquired over a period of 13 years are used to assess changes in macrophyte colonization patterns in the coastal zones of the Sirmione Peninsula in the ...
Claudia Giardino   +4 more
doaj   +1 more source

Macrophyte - mollusc relationship in Lake Kariba [PDF]

open access: yes, 1994
Five species of submerged vegetation Lagarosiphon ilicifolius, Najas pectinata, Vallisneria aethiopica, Ceratophyllum demersum and Potamogeton octandrus; 7 species of gastropods Melanoides tuberculata, Bellamya capillata, Biomphalaria pfeifferi, Bullinus
Machena, C.
core  

New Records for \u3ci\u3eEuhrychiopsis Lecontei\u3c/i\u3e (Coleoptera: Curculionidae) and Their Densities in Wisconsin Lakes [PDF]

open access: yes, 2018
The native aquatic weevil, Euhrychiopsis lecontei is currently being researched as a potential biological control for the exotic aquatic macrophyte Eurasian watermilfoil (Myriophyllum spicatum), yet little is known about its specific distribution in ...
Bozek, Michael A   +3 more
core   +2 more sources

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