ISSN:
1573-5117
Schlagwort(e):
rotifers
;
zooplankton
;
production
;
Rotatoria
;
P/B ratio
;
eutrophication
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Biologie
Notizen:
Abstract The production of planktonic rotifers was studied in eutrophic Lake Ormajärvi. Of the total annual production of rotifers (2.9 g org. C m−2 or 231 mg dry weight m−3) 49% was achieved during one month (July) and 88% during 3 months of summer. The most important producers were Keratella cochlearis (1.2 g C m−2), Asplanchna priodonta (0.8 g C m−2) and Conochilus unicornis (0.6 g C m−2). The P/B ratio for the total rotifer community during the growing season (7 months) was 25.0; monthly P/ B values varied between 0.3 and 5.2. The daily P/ B values were highest among species of Collotheca. The relationships of rotifers to some biotic and abiotic factors (invertebrate predators — Mesocyclops, Cladocera, planktonic Protozoa and temperature) are briefly discussed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00045986
