Hood, Raleigh R., Coles, Victoria J., Huggett, Jenny A., Landry, Michael R., Levy, Marina, Moffett, James W. and Rixen, Tim ORCID: https://orcid.org/0000-0001-8376-891X (2024) Chapter 13 - Nutrient, phytoplankton, and zooplankton variability in the Indian Ocean. In: The Indian Ocean and its Role in the Global Climate System. . Elsevier, Amsterdam, pp. 293-327. ISBN 9780128226988 DOI https://doi.org/10.1016/B978-0-12-822698-8.00020-2.

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Abstract

This chapter provides an overview of the physical and biogeochemical factors that control spatial and temporal variability in macro- and micro-nutrient concentrations, phytoplankton biomass and production, and zooplankton biomass and grazing in the Indian Ocean. As in other ocean basins, in the Indian Ocean, there is a strong connection between the physics that drives (or suppresses) nutrient delivery to the photic zone and the responses of phytoplankton and zooplankton. Monsoon wind forcing is a major biogeochemical and ecological driver with broad stimulatory and suppressing effects throughout many regions, including the Arabian Sea, Bay of Bengal, Seychelles Chagos Thermocline Ridge, Java, and the central/eastern subtropical gyre. In addition, there are regionally specific processes that significantly modulate the biogeochemical and ecological responses. For example, strong advective impacts and Fe/Si limitation in the Arabian Sea; freshwater and stratification in the Bay of Bengal; poleward transport, downwelling, and seaward-propagating eddies in the southeastern Indian Ocean; and alongshore-propagating eddies, meanders, upwelling and poleward transport in the southwestern Indian Ocean. The southern subtropical gyre is extremely oligotrophic except when/where the Southeast Madagascar bloom occurs. Recommendations for future work include the need to motivate more planktonic food web studies.

Document Type:	Book chapter
Programme Area:	PA2
Research affiliation:	Biogeochemistry and Geology > Carbon and Nutrient Cycling
DOI:	https://doi.org/10.1016/B978-0-12-822698-8.00020-2
Date Deposited:	10 Feb 2025 10:46
Last Modified:	10 Feb 2025 10:46
URI:	http://cris.leibniz-zmt.de/id/eprint/5570

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