Τίτλος:
Interannual monsoon wind variability as a key driver of East African small pelagic fisheries
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
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. © 2020, The Author(s).
Συγγραφείς:
Jebri, F.
Jacobs, Z.L.
Raitsos, D.E.
Srokosz, M.
Painter, S.C.
Kelly, S.
Roberts, M.J.
Scott, L.
Taylor, S.F.W.
Palmer, M.
Kizenga, H.
Shaghude, Y.
Wihsgott, J.
Popova, E.
Περιοδικό:
Scientific Reports
Εκδότης:
Institute of Geographic Sciences and Natural Resources Research
DOI:
10.1038/s41598-020-70275-9
