Results 41 to 50 of about 13,377 (210)

Zooplankton richness, abundance and biomass of two hypertrophic shallow lakes with different salinity [PDF]

open access: yes, 2012
The zooplankton of lakes is controlled by biological and physico-chemical parameters. Among the former, predation by fish can determine the replacement of large-sized species by small-sized ones and among the latter, salinity exerts negative effects on ...
Cabrera, Gabriela Cecilia   +3 more
core  

Competencia en Cladocera: implicancias de la sobreposición en el uso de los recursos tróficos Competition in Cladocera: implications of the trophic resources use overlap

open access: yesRevista Chilena de Historia Natural, 2000
A pesar que numerosa evidencia demuestra el uso de diferentes estrategias de alimentación entre cladóceros, la clásica descripción de una conducta alimentaria pasiva ha conducido a una subestimación de la sobreposición de nicho trófico sobre sus patrones
GINGER MARTINEZ, VIVIAN MONTECINO
doaj  

Long-Term Responses of Crustacean Zooplankton to Hydrological Alterations in the Danube Inland Delta: Patterns of Biotic Homogenization and Differentiation

open access: yesDiversity
Our study addresses how large-scale hydrological alterations shape zooplankton biodiversity in floodplain ecosystems, which are highly sensitive to changes in river connectivity.
Pavel Beracko   +2 more
doaj   +1 more source

The Effect of Food Concentration on the Juvenile Somatic Growth Rate of Body Length, Fecundity and the Production of Resting Eggs by Moina brachiata (Crustacea: Cladocera) Single Females [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2012
The study addresses the effect of different food concentrations of green alga Chlorella vulgaris on the life cycle parameters (the body length, specific juvenile somatic growth rate of body length, the number of offspring in the first clutch of ...
Tatiana S. Lopatina, Egor S. Zadereev
doaj  

The food of coarse fish [PDF]

open access: yes, 1940
Remarkably little has been published on the feeding habits of the non-salmonid fishes of British fresh waters. The following report briefly summarizes the results obtained from the examination of the stomach contents of some 2,700 fish, belonging to 19 ...
Hartley, P.H.T.
core  

Influencia de las macrófitas sobre la estructura poblacional de rotíferos y microscrustáceos en un plano de inundación tropical

open access: yesRevista de Biología Tropical, 2011
La mayoría de estudios ecológicos del zooplancton se han realizado en aguas abiertas. No obstante, es importante ampliar la exploración hacia hábitats como el de las macrófitas. En este estudio se evaluó la variación espacio-temporal de la estructura del
Silvia Lucía Villabona-González   +2 more
doaj  

Invertebrate communities in northern Lake Victoria, with reference to their potential for fishery production [PDF]

open access: yes, 1999
The zooplankton and macrobenthic communities of Lake Victoria were sampled by lift net and Ponar grab, respectively. The zooplankton comprised copepods and cladocerans, rotifers and aquatic insect larvae. Most taxa exhibited wide distribution in the lake,
Kiggundu, V., Ndawula, L.M., Ochieng, H.
core  

Winter decrease of zooplankton abundance and biomass in subalpine oligotrophic Lake Atnsjøen (SE Norway)

open access: yesJournal of Limnology, 2019
Despite the rapidly changing winter conditions in temperate ecosystems, little attention has been devoted to the effects of these changes on lake ecology.
Thomas C. Jensen
doaj   +1 more source

Effects of climate on size structure and functioning of aquatic food webs [PDF]

open access: yes, 2010
In aquatic food webs, the role of body size is notoriously strong. It is also well known that temperature has an effect on body size. For instance, Bergmann’s rule states that body size increases from warm to cold climates.
Lacerot, G.
core  

Paleoenvironments of the Last Interglacial–Glacial Transition on the East European Plain: Insights into Climate-Driven Ecosystem Dynamics

open access: yesQuaternary
A multiproxy study of a new Pleistocene locality at Ivantzevo, Moscow Region, was conducted to reconstruct paleoenvironments from the Middle Pleistocene to the Last Pleniglacial.
E. Ershova   +10 more
doaj   +1 more source

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