Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(4.7 MB)

Title: Inter-regional comparison of land-use effects on stream metabolism

Author: Bernot, Melody J.; Sobota, Daniel J.; Hall, Robert O.; Mulholland, Patrick J.; Dodds, Walter K.; Webster, Jackson R.; Tank, Jennifer L.; Ashkenas, Linda R.; Cooper, Lee W.; Dahm, Clifford N.; Gregory, Stanley V.; Grimm, Nancy B.; Hamilton, Stephen K.; Johnson, Sherri L.; McDowell, William H.; Meyer, Judith L.; Peterson, Bruce; Poole, Geoffrey C.; Valett, H. Maurice; Arango, Clay; Beaulieu, Jake J.; Burgin, Amy J.; Crenshaw, Chelsea; Helton, Ashley M.; Johnson, Laura; Merriam, Jeff; Niederlehner, B.R.; O'Brien, Jonathan M.; Potter, Jody D.; Sheibley, Richard W.; Thomas, Suzanne M.; Wilson, Kym.

Date: 2010

Source: Freshwater Biology. 55: 1874-1890

Publication Series: Scientific Journal (JRNL)

Description: Rates of whole-system metabolism (production and respiration) are fundamental indicators of ecosystem structure and function. Although first-order, proximal controls are well understood, assessments of the interactions between proximal controls and distal controls, such as land use and geographic region, are lacking. Thus, the influence of land use on stream metabolism across geographic regions is unknown. Further, there is limited understanding of how land use may alter variability in ecosystem metabolism across regions. Stream metabolism was measured in nine streams in each of eight regions (n = 72) across the United States and Puerto Rico. In each region, three streams were selected from a range of three land uses: agriculturally influenced, urban-influenced, and reference streams. Stream metabolism was estimated from diel changes in dissolved oxygen concentrations in each stream reach with correction for reaeration and groundwater input. Gross primary production (GPP) was highest in regions with little riparian vegetation (sagebrush steppe in Wyoming, desert shrub in Arizona/New Mexico) and lowest in forested regions (North Carolina, Oregon). In contrast, ecosystem respiration (ER) varied both within and among regions. Reference streams had significantly lower rates of GPP than urban or agriculturally influenced streams. Overall, consideration of the data separated by land-use categories showed reduced inter-regional variability in rates of metabolism, indicating that the influence of agricultural and urban land use can obscure regional differences in stream metabolism.

Keywords: ecosystem respiration, land use, metabolism, primary production, stream

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Bernot, Melody J.; Sobota, Daniel J.; Hall, Robert O.; Mulholland, Patrick J.; Dodds, Walter K.; Webster, Jackson R.; Tank, Jennifer L.; Ashkenas, Linda R.; Cooper, Lee W.; Dahm, Clifford N.; Gregory, Stanley V.; Grimm, Nancy B.; Hamilton, Stephen K.; Johnson, Sherri L.; McDowell, William H.; Meyer, Judith L.; Peterson, Bruce; Poole, Geoffrey C.; Valett, H. Maurice; Arango, Clay; Beaulieu, Jake J.; Burgin, Amy J.; Crenshaw, Chelsea; Helton, Ashley M.; Johnson, Laura; Merriam, Jeff; Niederlehner, B.R.; O'Brien, Jonathan M.; Potter, Jody D.; Sheibley, Richard W.; Thomas, Suzanne M.; Wilson, Kym. 2010. Inter-regional comparison of land-use effects on stream metabolism. Freshwater Biology. 55: 1874-1890.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.