Unknown
Copernicus Publications
In:
EPIC3Biogeosciences, Copernicus Publications, 10(3), pp. 1471-1481, ISSN: 1726-4189
Publication Date:
2014-10-21
Description:
Impacts of ocean acidification (OA) on marine
biota have been observed in a wide range of marine systems.
We used a mesocosm approach to study the response
of a high Arctic coastal microzooplankton community during
the post-bloom period in Kongsfjorden (Svalbard) to direct
and indirect effects of high pCO2/low pH. We found almost
no direct effects of OA on microzooplankton composition
and diversity. Both the relative shares of ciliates and heterotrophic
dinoflagellates as well as the taxonomic composition
of microzooplankton remained unaffected by changes in
pCO2/pH. Although the different pCO2 treatments affected
food availability and phytoplankton composition, no indirect
effects (e.g. on the total carrying capacity and phenology of
microzooplankton) could be observed. Our data point to a
high tolerance of this Arctic microzooplankton community
to changes in pCO2/pH. Future studies on the impact of OA
on plankton communities should include microzooplankton
in order to test whether the observed low sensitivity to OA
is typical for coastal communities where changes in seawater
pH occur frequently.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Article
,
isiRev
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