The macrozoobenthos in different types of littoral zone of Lake Onego
A. I. SIDOROVA
Karelian Research Center of the Russian Academy of Sciences, Northern Water Problems Institute, Petrozavodsk, Russia
Keywords: macrozoobenthos, amphipod, Gmelinoides fasciatus, littoral zone, Onego Lake
Abstract
The results of studies of bottom biocenoses in three types of littoral zone (rocky biotope, gravel-sand biotope and surf zone with thickets of higher aquatic vegetation) of Lake Onego in 2013 and 2014 are presented. Our results show that among the three types of coastal zone, the maximum values of macrozoobenthos biomass were noted in the rocky littoral zone (3.4-6.6 g/m2), the minimum values in the sandy zone (0.1-0.2 g/m2). The invasive species Gmelinoides fasciatus (Stebbing 1899) (CRUSTACEA: AMPHIPODA) has successfully naturalized in all types of littoral zones of the reservoir in recent decades. On the rocky type of biotope, G. fasciatus dominates both in numbers and biomass.
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