Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009

Gibberd, M-JKean, EBarlow, RThomalla, Sandy JLucas, M2014-06-172014-06-172013-08Gibberd, M-J., Kean, E., Barlow, R., Thomalla, S.J. and Lucas, M. 2013. Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009. Deep-Sea Research Part 1: Oceanographic Research Papers, vol. 78, pp 70-780967-0637http://ac.els-cdn.com/S0967063713000861/1-s2.0-S0967063713000861-main.pdf?_tid=2e5bd630-ebd0-11e3-ac59-00000aacb35f&acdnat=1401876691_47f13ba4be6529c7a06c5c6ee21a7268http://hdl.handle.net/10204/7463Copyright: 2013 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Deep-Sea Research Part 1: Oceanographic Research Papers, vol. 78, pp 70-78A chemotaxonomic investigation of surface phytoplankton was undertaken on a research cruise to the Atlantic sector of the Southern Ocean during late austral summer 2009. Based on pigment signatures, several distinct regions emerged that were delineated by physical features. CHEMTAX analysis of high performance liquid chromatography (HPLC) pigment data indicated that diatoms generally dominated communities south of the Antarctic Polar Front (APF), particularly in regions of elevated biomass where chlorophyll-a (chl-a) was 41.5 mg l(sup-1) and diatoms comprised 480% of biomass. Pigment signatures representative of haptophytes-8, indicative of Phaeocystis antarctica, were dominant near the ice shelf. Chl-a concentrations were 0.2–0.6 mg l(sup-1) between the APF and the Subtropical Front (STF) and outputs suggested that chlorophytes, haptophytes-8 and haptophyte-6, in the form of coccolithophores, were the major constituents. Very low chl-a levels (o0.2 mg l(sup-1) were observed north of the STF and the prokaryotes Synechococcus spp. and Prochlorococcus spp. were the dominant groups in these oligotrophic waters.enCHEMTAXHPLC pigmentsCommunity structureSouthern OceanDiatomsPhaeocystis antarcticaPhytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009ArticleGibberd, M., Kean, E., Barlow, R., Thomalla, S. J., & Lucas, M. (2013). Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009. http://hdl.handle.net/10204/7463Gibberd, M-J, E Kean, R Barlow, Sandy J Thomalla, and M Lucas "Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009." (2013) http://hdl.handle.net/10204/7463Gibberd M, Kean E, Barlow R, Thomalla SJ, Lucas M. Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009. 2013; http://hdl.handle.net/10204/7463.TY - Article AU - Gibberd, M-J AU - Kean, E AU - Barlow, R AU - Thomalla, Sandy J AU - Lucas, M AB - A chemotaxonomic investigation of surface phytoplankton was undertaken on a research cruise to the Atlantic sector of the Southern Ocean during late austral summer 2009. Based on pigment signatures, several distinct regions emerged that were delineated by physical features. CHEMTAX analysis of high performance liquid chromatography (HPLC) pigment data indicated that diatoms generally dominated communities south of the Antarctic Polar Front (APF), particularly in regions of elevated biomass where chlorophyll-a (chl-a) was 41.5 mg l(sup-1) and diatoms comprised 480% of biomass. Pigment signatures representative of haptophytes-8, indicative of Phaeocystis antarctica, were dominant near the ice shelf. Chl-a concentrations were 0.2–0.6 mg l(sup-1) between the APF and the Subtropical Front (STF) and outputs suggested that chlorophytes, haptophytes-8 and haptophyte-6, in the form of coccolithophores, were the major constituents. Very low chl-a levels (o0.2 mg l(sup-1) were observed north of the STF and the prokaryotes Synechococcus spp. and Prochlorococcus spp. were the dominant groups in these oligotrophic waters. DA - 2013-08 DB - ResearchSpace DP - CSIR KW - CHEMTAX KW - HPLC pigments KW - Community structure KW - Southern Ocean KW - Diatoms KW - Phaeocystis antarctica LK - https://researchspace.csir.co.za PY - 2013 SM - 0967-0637 T1 - Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009 TI - Phytoplankton chemotaxonomy in the Atlantic sector of the Southern Ocean during late summer 2009 UR - http://hdl.handle.net/10204/7463 ER -