Ecosystems

, Volume 15, Issue 4, pp 616–623

Spatial Patterns of Soil Surface C Flux in Experimental Canopy Gaps

  • Jason D. Schatz
  • Jodi A. Forrester
  • David J. Mladenoff
Article

DOI: 10.1007/s10021-012-9535-1

Cite this article as:
Schatz, J.D., Forrester, J.A. & Mladenoff, D.J. Ecosystems (2012) 15: 616. doi:10.1007/s10021-012-9535-1

Abstract

To explore within-gap spatial patterns of soil surface CO2 flux, we measured instantaneous soil surface CO2 flux, soil surface temperature, and soil moisture in north–south transects across canopy gaps and in adjacent contiguous forest from April to November 2010 in a second-growth northern hardwood forest in Wisconsin, USA. Throughout the growing season, soil surface CO2 flux was higher in the northern 1/3 and northern edge of gaps compared to the central and southern portions. These patterns were driven primarily by within-gap variation in soil temperature, which was itself driven by within-gap patterns of insolation. Most locations in the northern 1/3 and northern edge of gaps had significantly higher modeled total growing season C flux (mean 725 g C m−2) compared to the contiguous forest (mean 706 g C m−2), whereas C flux in the central and southern portions of gaps (mean 555 g C m−2) was significantly lower than both the contiguous forest and the northern portions of gaps.

Keywords

Canopy gapC fluxGap microclimateRespirationSoil temperatureSoil fluxNorthern hardwood forest

Supplementary material

10021_2012_9535_MOESM1_ESM.doc (32 kb)
Supplementary material 1 (DOC 32 kb)

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Jason D. Schatz
    • 1
  • Jodi A. Forrester
    • 1
  • David J. Mladenoff
    • 1
  1. 1.Department of Forest and Wildlife EcologyUniversity of WisconsinMadisonUSA