The spatial structure of zooplankton communities and trophic state of mid-city Strzeszyńskie Lake
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Date
2008
Advisor
Editor
Journal Title
Journal ISSN
Volume Title
Publisher
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
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Abstract
Studies on Strzeszyńskie Lake were conducted in May and June 2007. The main aim
of this study was to compare the composition and dynamics of the zooplankton communities
between two different zones: the open water area and the littoral zone (including Chara tomentosa
and Typha angustifolia stands). The stand located within Chara tomentosa possessed the highest
number of identified species and most abundant zooplankton communities, while the station loc-
ated within the pelagic zone was characterised by the poorest taxonomic structure and the lowest
mean zooplankton densities for both rotifers and crustaceans. Zooplanktonic organisms moved in a
horizontal direction in order to avoid predators. In the littoral zone, markedly high densities of
pelagic species were also recorded. Furthermore, in the zone of stoneworts six Chara-associated
species were found. The open water zone of Strzeszyńskie Lake was dominated by limnetic spe-
cies, while within macrophyte-dominated stands a more diverse dominating structure occurred,
representing both limnetic and littoral species. Among dominating species the presence of species
indicating low trophic conditions was recorded. The low state of the trophic conditions of the wa-
ter of Lake Strzeszyńskie was also confirmed by the participation of mesotrophic species in the
total zooplankton abundance which reached between 14 and 72%.
Description
Sponsor
Keywords
Rotifers, Crustaceans, Habitat selectivity, Mid-city lake
Citation
Teka Kom. Ochr. Kszt. Środ. Przyr. – OL PAN, 2008, 5, 85–94
Seria
ISBN
ISSN
1733-4233