The Effect of Glacier Recession on Benthic and Pelagic Communities: Case Study in Herve Cove, Antarctica
2019
Marta Potocka | Anna Kidawa | Anna Panasiuk | Luiza Bielecka | Justyna Wawrzynek-Borejko | Weronika Patuła | Kornelia A. Wójcik | Joanna Plenzler | Tomasz Janecki | Robert J. Bialik
Changes in macrobenthic and pelagic communities in the postglacial, partially isolated, lagoon Herve Cove in Admiralty Bay, King George Island, were investigated 15 years after the first comprehensive studies had been conducted in this region. The bottom area of the cove has enlarged from approximately 12 ha to 19 ha after the retreat of the Dera Icefall. Based on a photographic survey of the benthos and taxonomic composition of zooplankton, ecological succession and the colonization of new species have been observed. Several new species occur such as gastropods, seastars, sea urchins and isopods, and their presence in different parts of the cove, as well as breeding aggregations suggests that they reproduce there. The influence of glacial streams is notable in bottom assemblages. We propose that Herve Cove is a good research area for studies on ecological succession in newly opened areas. The colonization of this lagoon has been recognized to be in its developing stage, and research should be continued.
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