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16 - Applied diatom studies in estuaries and shallow coastal environments

from Part IV - Diatoms as indicators in marine and estuarine environments

Published online by Cambridge University Press:  05 June 2012

By
Rosa Trobajo  and
Michael J. Sullivan
Edited by
John P. Smol  and
Eugene F. Stoermer
Rosa Trobajo
Affiliation:
IRTA-Aquatic Ecosystems
Michael J. Sullivan
Affiliation:
St. Andrews's North Campus
John P. Smol
Affiliation:
Queen's University, Ontario
Eugene F. Stoermer
Affiliation:
University of Michigan, Ann Arbor
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Summary

Introduction

Diatoms are an important and often dominant component of benthic microalgal assemblages in estuarine and shallow coastal environments. This chapter will be concerned mainly with motile diatom assemblages on sediments in these environments and secondarily with epiphytic diatom assemblages on submerged aquatic vegetation. Admiraal (1984) provided an excellent summary of the ecology of estuarine sediment-inhabiting diatoms and Underwood and Kromkamp (1999) an excellent review of microphytobenthos primary production in estuaries.

Many topics were covered in the above two works, including the distribution, effects of physicochemical factors, population growth, primary production, and interactions with herbivores in Admiraal's work, and a summary of the main factors affecting production and biomass of microphytobenthos (diatom-dominated) within microtidal temperate estuaries in Underwood and Kromkamp's review. The focus of the present review will be considerably narrower because only those applied studies that have focused on the autecology of particular diatom species or that have utilized structural (e.g. species diversity) and/or functional (e.g. primary production rates) attributes of benthic diatom assemblages will be considered. By “applied” we mean studies that treat benthic diatom assemblages as tools to address concerns about larger ecosystem problems such as cultural eutrophication of estuarine and shallow coastal environments. The three diatom-related research topics that will be reviewed in this chapter include eutrophication and sediment toxicity, sediment stability, and contribution of benthic diatom assemblages to global primary production and their role in food webs.

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The Diatoms
Applications for the Environmental and Earth Sciences
 , pp. 309 - 323
Publisher: Cambridge University Press
Print publication year: 2010

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