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Macrophyte decomposition in a surface-flow ammonia-dominated constructed wetland: Rates associated with environmental and biotic variables

Ecological Engineering
By: , , , and 
https://doi.org/10.1016/j.ecoleng.2007.12.003

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Abstract

Decomposition of senesced culm material of two bulrush species was studied in a surface-flow ammonia-dominated treatment wetland in southern California. Decomposition of the submerged culm material during summer months was relatively rapid (k = 0.037 day-1), but slowed under extended submergence (up to 245 days) and during fall and spring sampling periods (k = 0.009-0.014 day-1). Stepwise regression of seasonal data indicated that final water temperature and abundance of the culm-mining midge, Glyptotendipes, were significantly associated with culm decomposition. Glyptotendipes abundance, in turn, was correlated with water quality parameters such as conductivity and dissolved oxygen and ammonia concentrations. No differences were detected in decomposition rates between the bulrush species, Schoenoplectus californicus and Schoenoplectus acutus.

Suggested Citation

Thullen, J., Nelson, S.M., Cade, B., and Sartoris, J., 2008, Macrophyte decomposition in a surface-flow ammonia-dominated constructed wetland: Rates associated with environmental and biotic variables: Ecological Engineering, v. 32, no. 3, p. 281-290, https://doi.org/10.1016/j.ecoleng.2007.12.003.

Publication type Article
Publication Subtype Journal Article
Title Macrophyte decomposition in a surface-flow ammonia-dominated constructed wetland: Rates associated with environmental and biotic variables
Series title Ecological Engineering
DOI 10.1016/j.ecoleng.2007.12.003
Volume 32
Issue 3
Year Published 2008
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Ecological Engineering
First page 281
Last page 290
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