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

Author: 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.;

Date: 2009

Source: Ecology. 90: 2556-2566.

Publication Series: Scientific Journal (JRNL)

Description: 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

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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. 2009. Nutrient enrichment alters storage and fluxes of detritus in a headwater stream ecosystem. Ecology 90:2556-2566.

 


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