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

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

Research output: Contribution to journalArticle

188 Citations (Scopus)

Abstract

1. 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.2. 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.3. 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.4. GPP was positively correlated with photosynthetically active radiation and autotrophic biomass. Multiple regression models compared using Akaike's information criterion (AIC) indicated GPP increased with water column ammonium and the fraction of the catchment in urban and reference land-use categories. Multiple regression models also identified velocity, temperature, nitrate, ammonium, dissolved organic carbon, GPP, coarse benthic organic matter, fine benthic organic matter and the fraction of all land-use categories in the catchment as regulators of ER.5. Structural equation modelling indicated significant distal as well as proximal control pathways including a direct effect of land-use on GPP as well as SRP, DIN, and PAR effects on GPP; GPP effects on autotrophic biomass, organic matter, and ER; and organic matter effects on ER.6. 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.

Original languageEnglish (US)
Pages (from-to)1874-1890
Number of pages17
JournalFreshwater Biology
Volume55
Issue number9
DOIs
StatePublished - Sep 2010

Fingerprint

primary production
primary productivity
land use
metabolism
organic matter
ecosystem respiration
respiration
photosynthetically active radiation
multiple regression
ecosystem
catchment
comparison
effect
Akaike information criterion
ecosystem structure
ecosystems
riparian vegetation
biomass
Artemisia
Puerto Rico

Keywords

  • Ecosystem respiration
  • Land use
  • Metabolism
  • Primary production
  • Stream

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Bernot, M. J., Sobota, D. J., Hall, R. O., Mulholland, P. J., Dodds, W. K., Webster, J. R., ... Wilson, K. (2010). Inter-regional comparison of land-use effects on stream metabolism. Freshwater Biology, 55(9), 1874-1890. https://doi.org/10.1111/j.1365-2427.2010.02422.x

Inter-regional comparison of land-use effects on stream metabolism. / 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; Hamilton, Stephen K.; Johnson, Sherri L.; McDowell, William H.; Meyer, Judith L.; Peterson, Bruce; Poole, Geoffrey C.; Maurice 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.

In: Freshwater Biology, Vol. 55, No. 9, 09.2010, p. 1874-1890.

Research output: Contribution to journalArticle

Bernot, MJ, Sobota, DJ, Hall, RO, Mulholland, PJ, Dodds, WK, Webster, JR, Tank, JL, Ashkenas, LR, Cooper, LW, Dahm, CN, Gregory, SV, Grimm, N, Hamilton, SK, Johnson, SL, McDowell, WH, Meyer, JL, Peterson, B, Poole, GC, Maurice Valett, HM, Arango, C, Beaulieu, JJ, Burgin, AJ, Crenshaw, C, Helton, AM, Johnson, L, Merriam, J, Niederlehner, BR, O'Brien, JM, Potter, JD, Sheibley, RW, Thomas, SM & Wilson, K 2010, 'Inter-regional comparison of land-use effects on stream metabolism', Freshwater Biology, vol. 55, no. 9, pp. 1874-1890. https://doi.org/10.1111/j.1365-2427.2010.02422.x
Bernot MJ, Sobota DJ, Hall RO, Mulholland PJ, Dodds WK, Webster JR et al. Inter-regional comparison of land-use effects on stream metabolism. Freshwater Biology. 2010 Sep;55(9):1874-1890. https://doi.org/10.1111/j.1365-2427.2010.02422.x
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 ; Hamilton, Stephen K. ; Johnson, Sherri L. ; McDowell, William H. ; Meyer, Judith L. ; Peterson, Bruce ; Poole, Geoffrey C. ; Maurice 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. / Inter-regional comparison of land-use effects on stream metabolism. In: Freshwater Biology. 2010 ; Vol. 55, No. 9. pp. 1874-1890.
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