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Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean

Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean
Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean
Surface pigment data from a transect along the eastern boundary of the Atlantic Ocean was analysed using CHEMTAX to yield more detailed information on the composition of phytoplankton communities. Total chlorophyll a concentrations varied from 0.03 mg m?3 in a northern oligotrophic region to 30.3 mg m?3 in the Benguela ecosystem. Diatoms dominated the Benguela, while both diatoms and haptophytes were the major groups in the Canary ecosystem and the temperate NE Atlantic. Prochlorococcus was the most prominent group in the southern oligotrophic region (15.5°S-15°N) although haptophytes were also a significant component of the population. In contrast, haptophytes dominated the northern oligotrophic region (21°-40°N). Photo-pigment indices indicated that chlorophyll b was mainly associated with prasinophytes and chlorophyll c with diatoms. Elevated photosynthetic carotenoids were due to increased proportions of haptophytes, but also linked with diatoms and dinoflagellates. Photoprotective carotenoids were more prominently associated with Prochlorococcus and to a lesser extent to Synechococcus.
Phytoplankton pigments, CHEMTAX, Atlantic Ocean, Eastern boundary
0967-0637
73-78
Barlow, R.
88e95bff-9e43-4516-bee6-750cce9b2cb0
Gibberd, M-J
732eed3b-7229-451d-9f48-fc776992d3ad
Lamont, T.
23b7d864-9839-475b-8926-6e83f666ee68
Aiken, J.
afdc4c64-e66d-43e7-a81a-241169a6604d
Holligan, Patrick
4c1d9d64-dfa7-49bf-9e15-37f891d59b7c
Barlow, R.
88e95bff-9e43-4516-bee6-750cce9b2cb0
Gibberd, M-J
732eed3b-7229-451d-9f48-fc776992d3ad
Lamont, T.
23b7d864-9839-475b-8926-6e83f666ee68
Aiken, J.
afdc4c64-e66d-43e7-a81a-241169a6604d
Holligan, Patrick
4c1d9d64-dfa7-49bf-9e15-37f891d59b7c

Barlow, R., Gibberd, M-J, Lamont, T., Aiken, J. and Holligan, Patrick (2016) Chemotaxonomic phytoplankton patterns on the eastern boundary of the Atlantic Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 111, 73-78. (doi:10.1016/j.dsr.2016.02.011).

Record type: Article

Abstract

Surface pigment data from a transect along the eastern boundary of the Atlantic Ocean was analysed using CHEMTAX to yield more detailed information on the composition of phytoplankton communities. Total chlorophyll a concentrations varied from 0.03 mg m?3 in a northern oligotrophic region to 30.3 mg m?3 in the Benguela ecosystem. Diatoms dominated the Benguela, while both diatoms and haptophytes were the major groups in the Canary ecosystem and the temperate NE Atlantic. Prochlorococcus was the most prominent group in the southern oligotrophic region (15.5°S-15°N) although haptophytes were also a significant component of the population. In contrast, haptophytes dominated the northern oligotrophic region (21°-40°N). Photo-pigment indices indicated that chlorophyll b was mainly associated with prasinophytes and chlorophyll c with diatoms. Elevated photosynthetic carotenoids were due to increased proportions of haptophytes, but also linked with diatoms and dinoflagellates. Photoprotective carotenoids were more prominently associated with Prochlorococcus and to a lesser extent to Synechococcus.

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More information

Accepted/In Press date: 18 February 2016
Published date: 20 May 2016
Keywords: Phytoplankton pigments, CHEMTAX, Atlantic Ocean, Eastern boundary
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 390940
URI: https://eprints.soton.ac.uk/id/eprint/390940
ISSN: 0967-0637
PURE UUID: bdcc377c-5955-48cd-9e2d-4db3909e7c4e

Catalogue record

Date deposited: 07 Apr 2016 09:39
Last modified: 15 Jul 2019 20:38

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