Global-Scale Similarities in Nitrogen Release Patterns During Long-Term Decomposition-Reference-Cited by-同舟云学术

Global-Scale Similarities in Nitrogen Release Patterns During Long-Term Decomposition

Published:2007-01-19 Issue:5810 Volume:315 Page:361-364
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Parton William¹²³⁴⁵,Silver Whendee L.¹²³⁴⁵,Burke Ingrid C.¹²³⁴⁵,Grassens Leo¹²³⁴⁵,Harmon Mark E.¹²³⁴⁵,Currie William S.¹²³⁴⁵,King Jennifer Y.¹²³⁴⁵,Adair E. Carol¹²³⁴⁵,Brandt Leslie A.¹²³⁴⁵,Hart Stephen C.¹²³⁴⁵,Fasth Becky¹²³⁴⁵

Affiliation:

1. Natural Resource Ecology Laboratory, Colorado State University, 200 West Lake, Campus Mail 1499, Fort Collins, CO 80523–1499, USA.

2. Ecosystem Science Division, Department of Environmental Science, Policy, and Management, 137 Mulford Hall #3114, University of California, Berkeley, CA 94720, USA.

3. Department of Forest, Rangeland, and Watershed Stewardship, and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO 80523–1472, USA.

4. LSI Logic Inc., 1636 Southwest 26th Street, Loveland, CO 80227, USA.

5. Department of Forest Science, Oregon State University, Corvallis, OR 97331, USA.

Abstract

Litter decomposition provides the primary source of mineral nitrogen (N) for biological activity in most terrestrial ecosystems. A 10-year decomposition experiment in 21 sites from seven biomes found that net N release from leaf litter is dominantly driven by the initial tissue N concentration and mass remaining regardless of climate, edaphic conditions, or biota. Arid grasslands exposed to high ultraviolet radiation were an exception, where net N release was insensitive to initial N. Roots released N linearly with decomposition and exhibited little net N immobilization. We suggest that fundamental constraints on decomposer physiologies lead to predictable global-scale patterns in net N release during decomposition.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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