Results 21 to 30 of about 13,377 (210)

Experimental Studies on Zooplankton-Toxic Cyanobacteria Interactions: A Review

open access: yesToxics, 2023
Cyanobacterial blooms have been recognized as a problem in fresh water for about 150 years. Over the past 50 years, experimental studies on the subject have gained importance considering the increasing need to control toxic cyanobacterial blooms.
S. Nandini, S. S. S. Sarma
doaj   +1 more source

Stoichiometric constraints in plankton communities of Patagonian lakes. Implications for Parabroteas sarsi distribution and conservation

open access: yesEcología Austral, 2022
The Patagonian region, from the Andes to the steppe, includes a profuse hydrographic network with deep and shallow lakes. Here, we analyze the stoichiometric constraints for the large predaceous copepod Parabroteas sarsi in fish and fishless lakes.
Esteban Balseiro   +5 more
doaj   +1 more source

Factors affecting methylmercury biomagnification by a widespread aquatic invertebrate predator, the phantom midge larvae Chaoborus [PDF]

open access: yes, 2012
MeHg biomagnification by the phantom midge Chaoborus in relation to MeHg concentrations in their prey and its migratory behavior was investigated in two Canadian Precambrian Shield lakes.
Aldamman, Lama   +5 more
core   +2 more sources

Crustacean communities in coastal ephemeral pools in the Araucanía region (38° S, Chile)

open access: yesBrazilian Journal of Biology
The fauna communities of ephemeral pools in southern Chile are characterized by heterogeneity of crustacean taxa; nevertheless, no detailed studies exist of their community structure.
P. De los Ríos-Escalante, P. Acevedo
doaj   +1 more source

Microplastics, Marine Copepods & Freshwater Cladocerans

open access: yesThe American Biology Teacher, 2022
Microplastic particles (MPs) less than 5 mm in size swirl and bob in freshwaters and seas around the world. To familiarize college biology students with the pressing issue of microplastic pollution and designing their own experiments, I assigned investigatation into whether marine copepods (Tigriopus californicus) or freshwater cladocerans (Daphnia ...
openaire   +1 more source

The distribution of estuarine fish larvae: nutritional condition and co-occurrence with predators and prey [PDF]

open access: yes, 2000
Fish larvae were collected monthly between March and September 1997 in the Mira and Guadiana estuaries (southern Portugal). Hydrological parameters were registered and zooplankton samples were obtained simultaneously. Densities of fish larvae (ind.100 m(-
Antunes   +82 more
core   +2 more sources

New data on the zooplankton of watercourses of the National Park “Krasnoyarsk Stolby”

open access: yesActa Biologica Sibirica, 2023
Based on natural materials collected by the authors in 2020-2022, data on zooplankton in the watercourses of the “Krasnoyarsk Stolby” National Park are summarized.
Nadezhda I. Yermolaeva   +3 more
doaj   +1 more source

Effect of large- and small- bodied zooplankton on phytoplankton in a eutrophic oxbow [PDF]

open access: yes, 2005
Macrozooplankton and microzooplankton effects on the phytoplankton were measured in situ in a eutrophic lake. Indigenous phytoplankton were incubated for 5 days in 301 mesocosms with either the macro- and microzooplankton (complete), microzooplankton ...
Borbély, György   +5 more
core   +1 more source

Predation by Larval Damselflies on Cladocerans

open access: yesJournal of Freshwater Ecology, 2010
ABSTRACT We quantified the strike and capture efficiency, handling time, and functional response of Enallagma hageni and Ishnura verticalis larvae feeding on several sizes of the cladocerans Polyphemus pediculus, Daphnia pulex, and Holopedium gibberum. Both species were most efficient at capturing and ingesting P.
Rebecca J. Hunt, Michael Swift
openaire   +1 more source

Microcrustacean assemblages composition and environmental variables in lakes and ponds of the Andean region - South of Chile (37-39° S) Composição de comunidades de microcustáceos e variáveis ambientais em lagos e lagoas da região andina - sul do Chile (37-39° S)

open access: yesBrazilian Journal of Biology, 2011
The zooplankton assemblages in Chilean Patagonian lakes are characterised mainly by their low biodiversity and high predominance of calanoids copepods, a pattern that has been studied for large and deep lakes between 38-51° S, and shallow ponds at 51° S.
P. De los Ríos-Escalante   +2 more
doaj   +1 more source

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