Results 61 to 70 of about 5,195 (227)

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]

Журнал 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 Effects of Nutrient Additions on Kokanee in Dworshak Reservoir, Idaho

Fisheries Management and Ecology, EarlyView.
ABSTRACT We investigated the effects of whole reservoir nitrogen (N) addition on kokanee growth in Dworshak Reservoir, Idaho. We hypothesized that N addition would improve the growth of kokanee (Oncorhynchus nerka) at a given level of abundance by increasing the availability of Daphnia, an important food source.
Sean M. Wilson, Matthew P. Corsi, Eric J. Stark, Eli A. Felts, Andrew M. Dux, Ryan S. Hardy   +5 more
wiley   +1 more source

Copepods vs. cladocerans in the field.

, 2013
Mean (±SE) proportion of copepods (white) and cladocerans (gray) observed in over ten years of field data from Lake Krankesjön and Lake Ringsjön during springs colder and warmer than the overall mean temperature in May (11.48°C) of all years investigated.
Mattias K. Ekvall (308727), Lars-Anders Hansson (46111)   +1 more
core   +1 more source

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

Revista 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, Néstor Jaime Aguirre R, Ana Lucía Estrada P   +2 more
doaj  

Assessing local adaptation and divergence at early life stages within Eastern Baltic cod (Gadus morhua)

Journal of Fish Biology, EarlyView.
Abstract Many commercially exploited fish stocks have declined over the last few decades. It is therefore essential to identify natural populations and understand local adaptation for sustainable management. Salinity is a key environmental factor shaping local adaptation, and adaptive trait divergence often occurs at the egg and larval stages.
Maddi Garate‐Olaizola, Johanna Fröjd, Vanda Larsson Åberg, Alma Hodzic‐Vázquez, Yvette Heimbrand, Anders Nissling, Jane W. Behrens, Maria Cortázar‐Chinarro, Ulf Bergström, Anssi Laurila   +9 more
wiley   +1 more source

Cladocerans versus copepods: the cause of contrasting top-down controls on freshwater and marine phytoplankton.

, 2006
Top–down control of phytoplankton by crustacean mesozooplankton is a cornerstone of freshwater ecology. Apparently, trophic cascades are more frequently reported from freshwater than from marine plankton.
Sommer, U., Ulrich Sommer, Frank Sommer, Sommer, Frank, Sommer, Ulrich   +4 more
core   +1 more source

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

Journal 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

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

Quaternary
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, S. Kuzmina, S. Sycheva, I. Zyuganova, E. Izumova, A. Zharov, V. Yu. Kuznetsov, F. Maksimov, S. Kolesnikov, N. Lavrenov, E. Ponomarenko   +10 more
doaj   +1 more source

Fish assemblage at a newly restored tidal wetland reflects surrounding waterways in the Sacramento‐San Joaquin Delta

Restoration Ecology, EarlyView.
Abstract Introduction We studied the response of fish assemblages, water quality, and plankton following the completion of 700 acres of a 1184‐acre tidal restoration project (Dutch Slough Tidal Restoration; DSTR) in a system degraded by water diversions, channelization, non‐native species, and wetland loss.
Lynette Williams Duman, Meghan Holst, Elsie Platzer, Kyle Phillips, John Durand   +4 more
wiley   +1 more source

The prediction of cladoceran grazing rate spectra1 [PDF]

Limnology and Oceanography, 1985
Reanalysis of published observations on the ingestion of artificial particles by cladocerans confirmed the statistical significance of particle size selection in situ. Three statistical approaches were tested to seek a framework for a general theory of cladoceran particle size selection: the algebraic continuous model, the algebraic discrete model, and
Edward McCauley, John A. Downing
openaire   +1 more source