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An automated platform for phytoplankton ecology and aquatic ecosystem monitoring

Pomati, F. and Jokela, J. and Simona, M. and Veronesi, M. and Ibelings, B.W. (2011) An automated platform for phytoplankton ecology and aquatic ecosystem monitoring. Environmental Science and Technology, 45, 9658-9665. ISSN 0013-936X.

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Official URL: http://dx.doi.org/10.1021/es201934n

Abstract

High quality monitoring data are vital for tracking and understanding the causes of ecosystem change. We present a potentially powerful approach for phytoplankton and aquatic ecosystem monitoring, based on integration of scanning flow-cytometry for the characterization and counting of algal cells with multiparametric vertical water profiling. This approach affords high-frequency data on phytoplankton abundance, functional traits and diversity, coupled with the characterization of environmental conditions for growth over the vertical structure of a deep water body. Data from a pilot study revealed effects of an environmental disturbance event on the phytoplankton community in Lake Lugano (Switzerland), characterized by a reduction in cytometry-based functional diversity and by a period of cyanobacterial dominance. These changes were missed by traditional limnological methods, employed in parallel to high-frequency monitoring. Modeling of phytoplankton functional diversity revealed the importance of integrated spatiotemporal data, including circadian time-lags and variability over the water column, to understand the drivers of diversity and dynamic processes. The approach described represents progress toward an automated and trait-based analysis of phytoplankton natural communities. Streamlining of high-frequency measurements may represent a resource for understanding, modeling and managing aquatic ecosystems under impact of environmental change, yielding insight into processes governing phytoplankton community resistance and resilience.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:9907
Deposited On:10 Oct 2011 02:00
Last Modified:24 Apr 2012 16:40

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