Interannual monsoon wind variability as a key driver of East African small pelagic fisheries

Jebri, Fatma ORCID:; Jacobs, Zoe L.; Raitsos, Dionysios E.; Srokosz, Meric ORCID:; Painter, Stuart C.; Kelly, Stephen; Roberts, Michael J.; Scott, Lucy; Taylor, Sarah F. W.; Palmer, Matthew; Kizenga, Hellen; Shaghude, Yohana; Wihsgott, Juliane; Popova, Ekaterina ORCID: 2020 Interannual monsoon wind variability as a key driver of East African small pelagic fisheries. Scientific Reports, 10 (1), 13247.

Before downloading, please read NORA policies.
s41598-020-70275-9.pdf - Published Version
Available under License Creative Commons Attribution 4.0.

Download (5MB) | Preview


Small pelagic fisheries provide food security, livelihood support and economic stability for East African coastal communities—a region of least developed countries. Using remotely- sensed and field observations together with modelling, we address the biophysical drivers of this important resource. We show that annual variations of fisheries yield parallel those of chlorophyll-a (an index of phytoplankton biomass). While enhanced phytoplankton biomass during the Northeast monsoon is triggered by wind-driven upwelling, during the Southeast monsoon, it is driven by two current induced mechanisms: coastal “dynamic uplift” upwelling; and westward advection of nutrients. This biological response to the Southeast monsoon is greater than that to the Northeast monsoon. For years unaffected by strong El-Niño/La-Niña events, the Southeast monsoon wind strength over the south tropical Indian Ocean is the main driver of year-to-year variability. This has important implications for the predictability of fisheries yield, its response to climate change, policy and resource management.

Item Type: Publication - Article
Digital Object Identifier (DOI):
ISSN: 2045-2322
Date made live: 15 Sep 2020 14:26 +0 (UTC)

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...