Publication Details

Nutrient enrichment alters storage and fluxes of detritus in a headwater stream ecosystem

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Benstead, Jonathan P.; Rosemond, Amy D.; Cross, Wyatt F.; Wallace, J. Bruce; Eggert, Susan L.; Suberkropp, Keller; Gulis, Vladislav; Greenwood, Jennifer L.; Tant, Cynthia J.

Year Published

2009

Publication

Ecology. 90: 2556-2566.

Abstract

Responses of detrital pathways to nutrients may differ fundamentally from pathways involving living plants: basal carbon resources can potentially decrease rather than increase with nutrient enrichment. Despite the potential for nutrients to accelerate heterotrophic processes and fluxes of detritus, few studies have examined detritus-nutrient dynamics at whole-ecosystem scales. We quantified organic matter (OM) budgets over three consecutive years in two detritus-based Appalachian (USA) streams. After the first year, we began enriching one stream with low-level nitrogen and phosphorus inputs. Subsequent effects of nutrients on outputs of different OM compartments were determined using randomized intervention analysis.

Keywords

Appalachian (USA) streams; Coweeta Hydrologic Laboratory; North Carolina; USA; detritus; ecological stoichiometry; nitrogen; nutrient limitation; organic matter budget; phosphorus; soils; streams

Citation

Benstead, Jonathan P.; Rosemond, Amy D.; Cross, Wyatt F.; Wallace, J. Bruce; Eggert, Susan L.; Suberkropp, Keller; Gulis, Vladislav; Greenwood, Jennifer L.; Tant, Cynthia J. 2009. Nutrient enrichment alters storage and fluxes of detritus in a headwater stream ecosystem. Ecology 90:2556-2566.

Last updated on: October 16, 2012