The response of phytoplankton to climate variability associated with the North Atlantic Oscillation

Zhai, L; Platt, T; Tang, CLC; Sathyendranath, S; Walne, AW. 2013 The response of phytoplankton to climate variability associated with the North Atlantic Oscillation. Deep Sea Research Part II: Topical Studies in Oceanography, 93. 159-168. 10.1016/j.dsr2.2013.04.009

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Official URL: http://dx.doi.org/10.1016/j.dsr2.2013.04.009

Abstract/Summary

Inter-annual variability in the timing of phytoplankton spring bloom and phytoplankton community structure in the central North Atlantic Ocean was quantified using ocean color data and continuous plankton recorder (CPR) data. This variability was related to the North Atlantic Oscillation using correlation analysis and multivariate auto-regression models. The initiation of the spring bloom derived from CPR phytoplankton color index data is similar to that derived from satellite chlorophyll, and exhibits a nominal correlation with the sea surface temperature (SST) and the North Atlantic Oscillation (NAO). The extrapolated spring bloom timing suggested later initiation of blooms in the mid-1980s and earlier initiation of blooms in the 1990s. The climatological phytoplankton community structure in the central North Atlantic is dominated by diatoms, except for a shift in community composition favoring dinoflagellates in August. The ratio of diatoms to total phytoplankton abundance and the ratio of dinoflagellates to total phytoplankton abundance are both closely correlated with the NAO and SST. The extended time series of phytoplankton community structure between 1985 and 2009, deduced from the time series of SST and NAO over the same interval, showed a decadal shift away from diatoms towards dinoflagellates. The linkages between the NAO, and changes in stratification and phytoplankton processes occur over a larger scale than previously observed.

Item Type: Publication - Article
Subjects: Data and Information
Earth Observation - Remote Sensing
Ecology and Environment
Marine Sciences
Oceanography
Divisions: Plymouth Marine Laboratory > Science Areas > Sea from Space
Depositing User: Mrs Julia Crocker
Date made live: 03 Mar 2014 12:34
Last Modified: 06 Jun 2017 16:10
URI: http://plymsea.ac.uk/id/eprint/5590

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