Results 201 to 210 of about 2,127,400 (339)

Benthic Microbial community responses to pesticides in lake littoral zones

, 2011
Herbicides contamination of lake ecosystems is characterized by mixture of several molecules at low concentration. Their effect on microorganisms, especially benthic communities, is not well known. With the view of assessing the ecological risk of herbicides for aquatic microorganisms, some models (Species sensitivity distribution-SSD, Independent ...
Larras, Floriane, Bouchez, Agnes, Montuelle, Bernard   +2 more
openaire   +2 more sources

A unique sessile loricate euglenid, Lepocinclis loricata sp. nov. (Euglenophyta, Phacaceae), from South Africa: Evolutionary implications

Journal of Phycology, EarlyView.
Abstract In this paper, we describe Lepocinclis loricata sp. nov. (Phacaceae), a sessile loricate euglenid that differs from all known loricate taxa by its unique combination of the presence of a lorica, monad morphology, sessile habit, and phylogenetic position within the Phacaceae. Populations of this species inhabit two turbid, silt‐rich waterbodies,
Bożena Zakryś, Sanet Janse van Vuuren, Aleksandra Kluczek, Maja Łukomska‐Kowalczyk   +3 more
wiley   +1 more source

Review and Integrated Framework for Deep-Sea Mineral Resources, Ecological Influence, and Future Development. [PDF]

Int J Microbiol
Liu J, Wang C, Etim IN, Zhang R, Sand W, Wang X, Yang L, Ge Y, Liu J.   +8 more
europepmc   +1 more source

Phytoplankton growth and potential cyanotoxin production differ in response to nitrogen and phosphorus amendments in late summer communities from Kabetogama Lake (Minnesota, United States)

Journal of Phycology, EarlyView.
Abstract Cyanotoxins such as microcystin (MC), cylindrospermopsin, and saxitoxin are secondary metabolites that are rich in nitrogen (N). Most cyanobacteria grow best on reduced inorganic N (ammonium, NH4), but when NH4 is absent, cyanobacteria can activate physiological pathways to process other N forms (e.g., nitrate; NO3).
James H. Larson, Ryan P. Maki, Sean W. Bailey, Victoria G. Christensen, Keith A. Loftin, Erin A. Stelzer, James C. Smith, Seth A. McWhorter   +7 more
wiley   +1 more source

Ecological Impacts of Emamectin Benzoate, a Sea Lice Therapeutant, on Benthic Communities in the Vicinity of Norwegian Aquaculture Facilities. [PDF]

Environ Sci Technol
Arnberg M, Drivdal M, Evenset A, Lillicrap A, Macken AL, Ramasco V, Skomsø DB, Sagerup K, Refseth GH.   +8 more
europepmc   +1 more source

Role of benthic microalgae in a coastal zone : biomass, productivity and biodiversity

Rôle des micro-algues benthiques dans la zone côtière : biomasse, biodiversité, productivité L'état et l'évolution des écosystèmes côtiers font partie des principales préoccupations des institutions européennes. Leur fonctionnement global et leur structure sont fortement conditionnés par le comportement des premiers échelons de la ...
openaire   +2 more sources

Epitypification of Merismopedia tranquilla (Cyanobacteria) prompts phylogenetic reassessment of the genus and the description of two morphologically similar genera

Journal of Phycology, EarlyView.
Abstract The genus Merismopedia is morphologically characterized by its distinctive colony arrangement yet exhibits considerable variability among species. Recent studies suggested that Merismopedia is polyphyletic, and its most likely true lineage was provisionally placed within the Microcystaceae. However, the available molecular data for most of the
Jan Pokorný, Jan Kaštovský, Lenka Marešová Štenclová   +2 more
wiley   +1 more source

Sequence stratigraphy of the syn-rift miocene succession in the Abu Rudeis-Sidri Field, Gulf of Suez, Egypt. [PDF]

Sci Rep
Assal EM, Farouk S, Omran MA, Belal N, Sarhan MA.   +4 more
europepmc   +1 more source

Dominance and toxicity without lethality: Exploring biomass, cyanometabolites, and Daphnia responses across Cyanobacterial strains

Journal of Phycology, EarlyView.
Abstract Cyanobacteria are cosmopolitan, important components of biomass with a remarkable ability to synthesize a diverse array of bioactive compounds, some of which may have toxic effects on other organisms and ecosystems. In this study, filamentous cyanobacterial strains isolated predominantly from temperate European freshwaters (Aphanizomenon ...
Łukasz Wejnerowski, Tamara Dulić, Sultana Akter, Michał Rybak, Agnieszka Piasecka, Jakub Szymkowiak, Oskar Kamiński, Anna Czerepska, Filip Pniewski, Zorica Svirčev, Ewa Poniecka, Krzysztof Zawierucha, Katarzyna Taylor, Marcin Krzysztof Dziuba, Jussi Meriluoto   +14 more
wiley   +1 more source

Dietary resilience of coral reef fishes to habitat degradation. [PDF]

J Anim Ecol
Clever F, Preziosi RF, Nguyen B, De Gracia B, Quintero Arrieta H, McMillan WO, Altieri AH, O'Dea A, Knowlton N, Leray M.   +9 more
europepmc   +1 more source