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Precipitation as a driver of phytoplankton ecology in coastal waters: A climatic perspective


Thompson, P and O'Brien, TD and Paerl, HW and Peierls, BL and Harrison, PJ and Robb, M, Precipitation as a driver of phytoplankton ecology in coastal waters: A climatic perspective, Estuarine, Coastal and Shelf Science, 162 pp. 119-129. ISSN 0272-7714 (2015) [Refereed Article]

Copyright Statement

Crown Copyright 2015

DOI: doi:10.1016/j.ecss.2015.04.004


Climatic change is shaping our planet's ecosystems yet our capacity to predict the consequences and prepare for the future remains rudimentary. Changes to the hydrological cycle mean that large regions of the planet are experiencing changes in precipitation. Responses by phytoplankton were assessed in three regions: 1) globally, 2) in regions that are wet and getting wetter, 3) in regions that are dry and getting drier. Using long-term time-series data the temporal variation in precipitation was compared with variation in chlorophyll a, diatoms, dinoflagellates, chlorophytes, chrysophytes and euglenophytes from 106 sites worldwide. The results demonstrate that phytoplankton responses to precipitation depend upon the season and region. In general phytoplankton responded more positively to increased precipitation during summer rather than winter. Increased precipitation during winter was likely to reduce chlorophyll a, diatoms and chrysophytes, whereas increasing precipitation in summer was likely to increase chlorophyll a and favor chlorophytes. Within regions that are wet and getting wetter chlorophyll a increased and dinoflagellate abundances were reduced in wet autumns; while diatom abundances were reduced in wet springs. In dry and drying ecosystems the abundances of chlorophytes decreased during dry springs and summers. The existence of these widespread patterns of phytoplankton abundance associated with inter annual variability in precipitation improves our capacity to predict the future composition of phytoplankton communities in estuarine and coastal water bodies.

Item Details

Item Type:Refereed Article
Keywords:climate change, diatoms, dinoflagellates, phytoplankton, precipitation, time-series
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine biodiversity
UTAS Author:Thompson, P (Dr Peter Thompson)
ID Code:118795
Year Published:2015
Web of Science® Times Cited:30
Deposited By:Zoology
Deposited On:2017-07-20
Last Modified:2017-08-28

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