Chapter

Biogeochemistry and Bacterial Ecology of Hydrologically Dynamic Wetlands

Paul I. Boon

in Ecology of Freshwater and Estuarine Wetlands

Published by University of California Press

Published in print August 2007 | ISBN: 9780520247772
Published online March 2012 | e-ISBN: 9780520932890 | DOI: http://dx.doi.org/10.1525/california/9780520247772.003.0005
Biogeochemistry and Bacterial Ecology of Hydrologically Dynamic Wetlands

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Many studies fail to acknowledge that wetlands are by nature incredibly dynamic habitats in terms of hydrology, and that episodic wetting and drying has a profound influence on chemical reactions and microbial ecology. This chapter addresses hydrologic dynamism in wetlands. Hydrologically dynamic wetlands are those with water levels that fluctuate widely and, in the most severe cases, dry out completely. For most purposes, they might just as accurately be called temporary wetlands, and the two terms are used interchangeably throughout the chapter, which also discusses the biogeochemistry and bacterial ecology of hydrologically dynamic wetlands. It then links the biogeochemistry and bacterial ecology of temporary wetlands with a wetland's most important physical driving force: its hydrology. The chapter briefly introduces bacterial diversity and wetland hydrology before considering the ways in which hydrology controls biogeochemical processes, by referring to the processes of organic matter decay and nutrient regeneration and cycling in temporary wetlands. Finally, it shows how bacterial populations and communities interact with soils and aquatic plants in temporary wetlands.

Keywords: hydrologically dynamic wetlands; temporary wetlands; bacterial diversity; wetland hydrology; biogeochemistry; bacterial ecology; microbial ecology; organic matter; soils; aquatic plants

Chapter.  26198 words.  Illustrated.

Subjects: History of Science and Technology

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