Convective circulation influences horizontal movement by planktonic crustaceans in the littoral zone of a mesotrophic lake

2020 ◽  
Author(s):  
Vladimir I. Razlutskij ◽  
Zhanna F. Buseva ◽  
Irina Yu. Feniova ◽  
Vitaliy P. Semenchenko

Hydrobiologia ◽  
1995 ◽  
Vol 303 (1-3) ◽  
pp. 39-48 ◽  
Author(s):  
Ashot Simonian ◽  
István Tátrai ◽  
Péter Bíró ◽  
Gábor Paulovits ◽  
László G.-Tóth ◽  
...  




2014 ◽  
Vol 29 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Teresa Korniłłowicz

It was demonstrated that the number of saprophytic fungi in the population of plankton in mesotrophic lake changing to eutrophic (Lake Piaseczno) was mountained a similiar level (average values) as in the eutrophic one (Lake Głębokie). The seasonal and annual changes in the number of fungi in the waters of the lake with lower trophicity were markedly stronger than those in the lake with higher trophicity. In the mesotrophic lake this was connected with the intensity of phytoplankton development. The greatest accumulation of fungi occured in the waters of littoral zone in both lakes and in the pelagial metha- and hypolimniun of the Lake Piaseczno.



2014 ◽  
Vol 29 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Teresa Korniłłowicz

U was demonstrated that the fungi decomposing protein were most abundant in tbe mesotrophic lake, whereas the fungi decomposing pectin dominated in the eutrophic lake. The accumulation of fungi mineralizing protein in littoral zone (metha- and hypolimnion of pelagial zone) of the mesotropbic lake indicated the increase in the fertility of this reservoir. The frequency of occurrence of physiologically differentiated mycoflora in the lake waters was seasonal and revealed fluctuations in their activity depending on the year of the study. These fluctuations were stronger in the mesotrophic lake.



2003 ◽  
Vol 54 (7) ◽  
pp. 797 ◽  
Author(s):  
Stephanie E. Hampton ◽  
Ian C. Duggan

Most studies of pond animals are undertaken during the daytime, despite evidence that many pond organisms demonstrate marked nocturnal changes in behaviour. Nocturnal studies of animals in fishless ponds are particularly rare, probably because diel changes in aquatic animal behaviour are often found to be a response to visual predation by fish. We used non-metric multidimensional scaling (MDS) and analysis of similarity (ANOSIM) to detect patterns of similarity in the community composition of macroinvertebrates and amphibians in samples taken from vegetated and unvegetated areas during the day and night in a fishless Vermont pond. We tested the hypotheses that (i) macrofaunal activity increased at night near the pond surface, and (ii) horizontal movement of the pond community was occurring on a diel cycle. At night, many taxa were more abundant in the surface waters and the community showed a general habitat expansion or shift from the littoral zone towards the edge and central waters. Our results challenge the assumptions that one would make about pond animal habitat use and interactions based solely on daytime studies. Even in fishless systems, where diel changes are unexpected, habitat use and behaviour might change at night and affect the strength and variety of species interactions.



Author(s):  
Ashot Simonian ◽  
István Tátrai ◽  
Péter Bíró ◽  
Gábor Paulovits ◽  
László G.-Tóth ◽  
...  


1999 ◽  
Vol 120 (2-3) ◽  
pp. 299-311 ◽  
Author(s):  
Sébastien Brosse ◽  
Jean-François Guegan ◽  
Jean-Nöel Tourenq ◽  
Sovan Lek


2021 ◽  
Vol 14 (4) ◽  
pp. 391-400
Author(s):  
Zh. F. Buseva ◽  
M. I. Gladyshev ◽  
N. N. Sushchik ◽  
E. A. Sysova ◽  
K. V. Myagkova ◽  
...  




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