Results 71 to 80 of about 3,359 (209)

Influence of spatial trophic patterns on the zooplankton community structure in a tropical urban reservoir in Brazil

open access: yesRevista U.D.C.A Actualidad & Divulgación Científica, 2014
The effect of nutrients inputs, mainly nitrogen and phosphorus on the structure of the zooplankton community, including diversity, evenness, dominance, and richness, in Pampulha Reservoir in the city of Belo Horizonte, Brazil was evaluated.
Juan Carlos Jaramillo Londoño   +2 more
doaj   +3 more sources

The impact of varying nutrient regimes in earthen freshwater ponds on the comparative ecology of diurnally occurring candidate live feeds [PDF]

open access: yes, 2005
The daytime composition and relative abundance of zooplankton species were studied in three treatments of two replicate earthen ponds each with nutrient sources and water replenishment regimes.
Adewale, A.M., Ebinimi, A.
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Variations spatiales et temporelles de la richesse et de l'abondance des rotifères (Brachionidae et Trichocercidae) et des cladocères dans un petit lac artificiel eutrophe situé en zone tropicale [PDF]

open access: yes, 2005
Les communautés de rotifères (Brachionidae et Trichocercidae) et de cladocères peuplant les eaux du lac Municipal de Yaoundé situé en zone tropicale (Cameroun), ont été examinés en relation avec quelques variables physico-chimiques du milieu.
Foto Menbohan, S.   +8 more
core   +1 more source

Biochar Adsorption: A Green Approach to PFAS Contaminant Removal

open access: yesCleanMat, Volume 1, Issue 1, Page 52-77, 26 December 2024.
The present work emphasizes the synthesis, and modification of biochar based adsorbents for PFAS removal, encompassing various health hazards and toxicity of PFAS to the ecosystem, chemical destruction mechanisms for PFAS removal, machine learning studies for predicting PFAS removal using biochar adsorbents, along with adsorption kinetics, isotherms ...
Darshana Chavan   +3 more
wiley   +1 more source

Ecological benefits of consistent expression of posterolateral spines in Brachionus calyciflorus

open access: yesJournal of Freshwater Ecology, 2022
Plasticity of spine morphology is a universal phenomenon in rotifers. Some Brachionus calyciflorus clones consistently develop two posterolateral spines (PS) with similar length (Type A), but others (Type B) not. The underlying mechanisms remain unknown.
Ya-Li Ge   +5 more
doaj   +1 more source

Ecological investigation of zooplankton abundance in the river Haraz, northeast Iran: Impact of environmental variables [PDF]

open access: yes, 2011
The influence of physicochemical properties of Haraz river on its zooplankton composition and abundance were investigated at three sites for one year between August 2009 and July 2010.
Akhavan Moslem   +2 more
core   +1 more source

Wolbachia in Antarctic terrestrial invertebrates: Absent or undiscovered?

open access: yesEnvironmental Microbiology Reports, Volume 16, Issue 6, December 2024.
Endosymbiotic bacteria Wolbachia are recognized for their role in influencing host survival and stress resistance, particularly in cold environmental conditions across various species. However, our analysis of available data reveals a notable absence of Wolbachia in species abundant in the extreme cold conditions of Antarctica.
Svitlana Serga   +11 more
wiley   +1 more source

Ecology of the Ráckeve-Sorokság Danube – a review [PDF]

open access: yes, 2007
Present paper is a review on the Ráckeve-Soroksár Danube in ecological standpoint. The goal of this study is to collect and evaluate all of available publications in that conception, concerning this Danube arm.
Hufnagel, Levente   +3 more
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Phototransformation of Amlodipine in Aqueous Solution: Toxicity of the Drug and Its Photoproduct on Aquatic Organisms

open access: yesInternational Journal of Photoenergy, 2007
The phototransformation of amlodipine in water was investigated under various conditions. A quantum yield ΦS2.2×10−4 and a half-life time t1/2 0.419 days were calculated when the drug in water (10−4 M) was exposed to sunlight.
Marina DellaGreca   +5 more
doaj   +1 more source

Über die Rädertiere (Rotatoria, Phylum Aschelminthes) des Alfsees, eines Hochwasser-Rückhaltebeckens der Hase, NW-Deutschland, FRG : (Beobachtungen vom Februar bis zum Oktober 1986) ; mit 3 Tabellen [PDF]

open access: yes, 2013
Dem jungen, künstlich geschaffenen Alfsee im Flußgebiet der Hase, einem Nebenfluß der Ems, NW-Deutschland, wurden vom Februar bis Oktober 1986 insgesamt an neun Tagen je eine Plankton- und Aufwuchsprobe entnommen und auf ihren Rotatorienbestand hin ...
Koste, Walter, Poltz, Jens
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