On each sampling event, backswimmers were collected in the littoral zone, near the edge of macrophytes (1 m deep with stands of Ludwigia sp.) and in the limnetic
zone (5 m deep without macrophytes).
Within this context we attempted to investigate the relationship of thermal discharges into Newton Lake (Jasper County, Illinois) to limnetic
cladoceran community dynamics.
and benthic sticklebacks (Taylor et al.
The present study is the first report on the feeding habits of this species in the riverine (limnetic
Body size and feeding ecology as alternatives to taxonomy for the study of limnetic
zooplankton community structure.
When and how to reproduce: a dilemma for limnetic
cyclopoid copepods, p.
Lake differences in mtDNA gene flow between sympatric dwarf and normal morphotypes is analogous to the situation observed in the Yukon Territory for sympatric benthic and limnetic
ecotypes of whitefish (Bernatchez et al.
Besides the fishing gear used in the other phases, trawls were done at the limnetic
region (30 m long, 1 m high and meshes of 1.5, 2.0, and 3.0 cm between adjacent knots) and long-line with treble fish hooks and single type fish hooks with natural bait (liver and fish pieces) and cast net (1.5 cm mesh) were used at the littoral zone.
Macrobrachium amazonicum specimens were obtained from two different populations: one inhabiting a body of water close to the estuary, in northeastern Para (Furo das Marinhas, Santa Barbara region; salinity = 0-14 ppt), and the other, a fully limnetic
population from Mato Grosso do Sul (Aquidauana; salinity = 0 ppt), both in Brazilian territory.
The infrequency of disturbance of the stratification in meromictic lakes often allows the prolongation of limnetic
conditions allowing the maturation of processes selecting for localized, low-diversity dominant assemblages of phytoplankton.
According to Callisto and Esteves (1998), the highest or lowest guild number in a given ecosystem may be related to the variety of available and occupied microhabitats in the littoral and limnetic
region, in different periods of the regional hydrological cycle.
Plankton community structure and limnetic