© 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem
Key words: alpine tundra, methane, trace gas Abstract. We measured CH4 fluxes from three major plant communities characteristic of alpine tundra in the Colorado Front Range. Plant communities in this ecosystem are deter-mined by soil moisture regimes induced by winter snowpack distribution. Spatial...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.482.8688 2023-05-15T18:40:07+02:00 © 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem A. E. West P. D. Brooks M. C. Fisk L. K. Smith C. H. Jaeger S. Babcock R. S. Lai The Pennsylvania State University CiteSeerX Archives 1998 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.8688 http://amo.colorado.edu/west1999.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.8688 http://amo.colorado.edu/west1999.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://amo.colorado.edu/west1999.pdf text 1998 ftciteseerx 2016-01-08T08:00:44Z Key words: alpine tundra, methane, trace gas Abstract. We measured CH4 fluxes from three major plant communities characteristic of alpine tundra in the Colorado Front Range. Plant communities in this ecosystem are deter-mined by soil moisture regimes induced by winter snowpack distribution. Spatial patterns of CH4 flux during the snow-free season corresponded roughly with these plant communities. In Carex-dominated meadows, which receive the most moisture from snowmelt, net CH4 produc-tion occurred. However, CH4 production in one Carex site (seasonal mean = +8.45 mg CH4 m−2 d−1) was significantly larger than in the other Carex sites (seasonal means = –0.06 and +0.05 mg CH4 m−2 d−1). This high CH4 flux may have resulted from shallower snowpack during the winter. In Acomastylis meadows, which have an intermediate moisture regime, CH4 oxidation dominated (seasonal mean = –0.43 mg CH4 m−2 d−1). In the windswept Kobresia meadow plant community, which receive the least amount of moisture from snowmelt, only CH4 oxidation was observed (seasonal mean = –0.77 mg CH4 m−2 d−1). Methane fluxes correlated with a different set of environmental factors within each plant community. In the Carex plant community, CH4 emission was limited by soil temperature. In the Acomastylis meadows, CH4 oxidation rates correlated positively with soil temperature and negatively with soil moisture. In the Kobresia community, CH4 oxidation was stimulated by precipitation. Thus, both snow-free season CH4 fluxes and the controls on those CH4 fluxes were related to the plant communities determined by winter snowpack. Text Tundra Unknown |
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Key words: alpine tundra, methane, trace gas Abstract. We measured CH4 fluxes from three major plant communities characteristic of alpine tundra in the Colorado Front Range. Plant communities in this ecosystem are deter-mined by soil moisture regimes induced by winter snowpack distribution. Spatial patterns of CH4 flux during the snow-free season corresponded roughly with these plant communities. In Carex-dominated meadows, which receive the most moisture from snowmelt, net CH4 produc-tion occurred. However, CH4 production in one Carex site (seasonal mean = +8.45 mg CH4 m−2 d−1) was significantly larger than in the other Carex sites (seasonal means = –0.06 and +0.05 mg CH4 m−2 d−1). This high CH4 flux may have resulted from shallower snowpack during the winter. In Acomastylis meadows, which have an intermediate moisture regime, CH4 oxidation dominated (seasonal mean = –0.43 mg CH4 m−2 d−1). In the windswept Kobresia meadow plant community, which receive the least amount of moisture from snowmelt, only CH4 oxidation was observed (seasonal mean = –0.77 mg CH4 m−2 d−1). Methane fluxes correlated with a different set of environmental factors within each plant community. In the Carex plant community, CH4 emission was limited by soil temperature. In the Acomastylis meadows, CH4 oxidation rates correlated positively with soil temperature and negatively with soil moisture. In the Kobresia community, CH4 oxidation was stimulated by precipitation. Thus, both snow-free season CH4 fluxes and the controls on those CH4 fluxes were related to the plant communities determined by winter snowpack. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
A. E. West P. D. Brooks M. C. Fisk L. K. Smith C. H. Jaeger S. Babcock R. S. Lai |
spellingShingle |
A. E. West P. D. Brooks M. C. Fisk L. K. Smith C. H. Jaeger S. Babcock R. S. Lai © 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem |
author_facet |
A. E. West P. D. Brooks M. C. Fisk L. K. Smith C. H. Jaeger S. Babcock R. S. Lai |
author_sort |
A. E. West |
title |
© 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem |
title_short |
© 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem |
title_full |
© 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem |
title_fullStr |
© 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem |
title_full_unstemmed |
© 1999 Kluwer Academic Publishers. Printed in the Netherlands. Landscape patterns of CH4 fluxes in an alpine tundra ecosystem |
title_sort |
© 1999 kluwer academic publishers. printed in the netherlands. landscape patterns of ch4 fluxes in an alpine tundra ecosystem |
publishDate |
1998 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.8688 http://amo.colorado.edu/west1999.pdf |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
http://amo.colorado.edu/west1999.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.482.8688 http://amo.colorado.edu/west1999.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766229288582905856 |