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Recent changes in phytoplankton communities associated with rapid regional climate change along the western Antarctic Peninsula
Montes-Hugo, M.; Doney, S.C.; Ducklow, H.; Fraser, W.R.; Martinson, D.G.; Stammerjohn, S.E.; Schofield, O. (2009). Recent changes in phytoplankton communities associated with rapid regional climate change along the western Antarctic Peninsula. Science (Wash.) 323(5920): 1470-1473. https://dx.doi.org/10.1126/science.1164533
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, meer
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  • Montes-Hugo, M.
  • Doney, S.C.
  • Ducklow, H.
  • Fraser, W.R.
  • Martinson, D.G.
  • Stammerjohn, S.E.
  • Schofield, O.
Abstract
    The climate of the western shelf of the Antarctic Peninsula (WAP) is undergoing a transition from a cold-dry polar-type climate to a warm-humid sub-Antarctic-type climate. Using three decades of satellite and field data, we document that ocean biological productivity, inferred from chlorophyll a concentration (Chl a), has significantly changed along the WAP shelf. Summertime surface Chl a (summer integrated Chl a similar to 63% of annually integrated Chl a) declined by 12% along the WAP over the past 30 years, with the largest decreases equatorward of 63 S and with substantial increases in Chl a occurring farther south. The latitudinal variation in Chl a trends reflects shifting patterns of ice cover, cloud formation, and windiness affecting water-column mixing. Regional changes in phytoplankton coincide with observed changes in krill (Euphausia superba) and penguin populations.
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