Results 71 to 80 of about 13,377 (210)

Composition, Distribution, and Biodiversity of Zooplanktons in Tropical Lentic Ecosystems with Different Environmental Conditions

open access: yesArthropoda
A study was conducted to evaluate zooplankton species composition, abundance, and diversity in both natural and artificial lakes with varying trophic levels and to determine the relationship between zooplankton community structure and lake environmental ...
Wahidah Ahmad Dini Umi   +5 more
doaj   +1 more source

Nutritional status response of Daphania laevis and Moina micura from a tropical reservoir to different algal diets: Scenedesmus quadricauda and Ankistrodesmus gracilis

open access: yesBrazilian Journal of Biology
The accumulation of lipid reserves was investigated in two common cladoceran species typical of neotropical freshwaters. Experiments were performed in order to measure differential accumulation of lipid reserves in response to two algal diets, S ...
C. F. MACEDO, R. M. PINTO-CORLHO
doaj   +1 more source

An overview of Cladoceran studies conducted in mine water impacted lakes

open access: yesInternational Aquatic Research, 2018
Mine-fed waters have been rigorously studied, but most of the ecological research on mine water has been conducted in riverine systems. Lakes, however, are known to recover from pollution more slowly than riverine systems and, thus, the impacts of mine ...
Jaakko Johannes Leppänen
doaj   +1 more source

Filtering efficiency and feeding mechanisms of Daphnia pulex on Microcystis aeruginosa and Nannochloropsis [PDF]

open access: yes, 2012
The filtering and feeding rate of Daphnia pulex from the Old Durham Reservoir, Durham, NH, were measured to determine the feeding efficiency on different concentrations of non-toxic Nannochloropsis (Class Eustigmatophyceae) and toxigenic cyanobacteria ...
Orlowicz, Elizabeth
core   +1 more source

How many species of cladocerans (Crustacea, Branchiopoda) are found in Brazilian Federal District?

open access: yesActa Limnologica Brasiliensia, 2013
AIM: This study aimed provides a checklist of cladocerans and also an evaluation of richness and species composition in the Federal District, Brazil.
Francisco Diogo Rocha Sousa   +1 more
doaj   +1 more source

On the nutrition of the predatory cladocerans Leptodora and Bythotrephes. [Translation of: Byulleten' Institute Biologii Vodokhranilishch 6, pp. 21-22, 1960] [PDF]

open access: yes, 1960
Results of the investigation on certain problems of the nutrition of Leptodora and Bythotrephes in Rybinsk Reservoir (Russia) are reviewed. To clarify the composition of the food of Leptodora and Bythotrephes in this period, experiments were provided on ...
Mordukhai-Boltovskaya, E.D.
core  

Seasonal dynamics of the littoral zooplankton groups of the Uday River within the National Nature Park "Pyryatynsky"

open access: yesBiosystems Diversity, 2017
The increase in anthropogenic impact on aquatic ecosystems causes significant alterations in the composition and structure of hydrobiont groups. These processes are characteristic of the hydrobiocenoses of the Uday River, the valley of which lies within ...
Z. V. Burian   +2 more
doaj   +1 more source

Polyphemus pediculus (L.) (Cladocera) as a possible indicator of water quality [PDF]

open access: yes, 1980
Usually stenobiotic species are used as hydrobiological indicators of the degree of pollution in natural waters. Cladocera are eurybiotic organisms, therefore their role as specific indicators of the water quality is considered to be insignificant ...
Butorina, L.G.
core  

A section-sampling design to assess zooplankton distribution in a highly complex hydrographic region (SW Atlantic Ocean, 34-41ºS): insights for a new time series?

open access: yesBrazilian Journal of Oceanography
Regular fish stock assessment cruises could provide a proper data platform to sample zooplankton. It is essential, however, that adequate sampling designs should be developed for each area so that zooplankton features may be accurately described with ...
Georgina Daniela Cepeda   +3 more
doaj  

Zooplankton biomass of reservoirs in different trophic conditions in the State of São Paulo, Brazil

open access: yesBrazilian Journal of Biology
This paper reports on a study involving an estimate of the biomass of rotifers, cladocerans, and cyclopoid and calanoid copepods found in reservoirs in different trophic conditions, comparing and relating numerical density data and pointing out ...
S. Sendacz, S. Caleffi, J. Santos-Soares
doaj   +1 more source

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