Post-spring bloom community structure of pelagic copepods in the Disko Bay, Western GreenlandShow others and affiliations
Responsible organisation
2005 (English)In: Journal of Plankton Research, ISSN 0142-7873, E-ISSN 1464-3774, Vol. 27, no 4, p. 341-356Article in journal (Refereed) Published
Abstract [en]
Community structure of pelagic copepods was investigated in the upper 200 m in the Disko Bay, Western Greenland, during the post-spring bloom period in June, 2001. This was the first study of the copepod community in West Greenland coastal waters sampled using smaller mesh sizes (50 mu m as opposed to 200 mu m). The mesozooplankton was dominated by copepods who constituted 82% of the total abundance and 95% of the total mesozooplankton biomass (> 50 mu m). Nauplii of Calanus, Pseudocalanus and Oithona dominated by number and the copepodites and adults were dominated by Oithona spp., Oncaea sp., Pseudocalanus sp., harpacticoids, Calanus finmarchicus, C. glacialis, and C. hyperboreus. Multivariate tests showed that the species/stage abundance composition of copepods changed significantly with depth. With one exception, all depth intervals showed unique significantly different compositions. Accordingly, the copepod community structure was influenced primarily by depth rather than by chlorophyll a concentration. Factors other than herbivorous grazing, such as omnivory, predator avoidance or association to marine snow aggregates of specific species, may have influenced the depth distribution of the total copepod community in the Disko Bay. Nevertheless, subsequent Pearson product moment correlations showed positive significant correlations between the vertical distribution of the three Calanus spp. and Pseudocalanus spp. and chlorophyll a concentrations, which points towards these species as prime components in the classic diatom-copepod food chain.
Place, publisher, year, edition, pages
Univ Gothenburg, Dept Marine Ecol, Kristineberg Marine Res Stn, S-45034 Fiskebackskil, Sweden. Natl Environm Res Inst, Dept Marine Ecol, DK-4000 Roskilde, Denmark. Fisheries & Oceans Canada, Inst Freshwater, Arctic Res Div, Winnipeg, MB R3T 2N6, Canada. Univ Aarhus, Dept Marine Ecol, DK-8200 Aarhus, Denmark., 2005. Vol. 27, no 4, p. 341-356
Research subject
SWEDARCTIC 2001, Grönland 2001
Identifiers
URN: urn:nbn:se:polar:diva-2351DOI: 10.1093/plankt/fbi010ISI: 000228636900005OAI: oai:DiVA.org:polar-2351DiVA, id: diva2:858585
2015-10-022015-10-022017-12-01