Show simple item record Petrie, M. D. Brunsell, N. A. Vargas, R. Collins, S. L. Flanagan, Larry B. Hanan, N. P. Litvak, M. E. Suker, A. E. 2018-06-27T19:13:17Z 2018-06-27T19:13:17Z 2016
dc.identifier.citation Petrie, M. D., Brunsell, N. A., Vargas, R., Collins, S. L., Flanagan, L. B., Hanan, N. P., ... Suker, A. E. (2016). The sensitivity of carbon exchanges in Great Plans grasslands to precipitation variability. Journal of Geophysical Research (Biogeosciences), 121(2), 280-294. doi::10.1002/2015JG003205 en_US
dc.description Sherpa Romeo green journal. Permission to archive final published version en_US
dc.description.abstract In the Great Plains, grassland carbon dynamics differ across broad gradients of precipitation and temperature, yet finer-scale variation in these variables may also affect grassland processes. Despite the importance of grasslands, there is little information on how fine-scale relationships compare between them regionally. We compared grassland C exchanges, energy partitioning and precipitation variability in eight sites in the eastern and western Great Plains using eddy covariance and meteorological data. During our study, both eastern and western grasslands varied between an average net carbon sink and a net source.Eastern grasslands had a moderate vapor pressure deficit (VPD=0.95kPa) and high growing season gross primary productivity (GPP=1010±218 g C m−2 yr−1). Western grasslands had a growing season with higher VPD (1.43 kPa) and lower GPP (360±127 g C m−2 yr−1). Western grasslands were sensitive to precipitation at daily timescales, whereas eastern grasslands were sensitive at monthly and seasonal timescales. Our results support the expectation that C exchanges in these grasslands differ as a result of varying precipitation regimes. Because eastern grasslands are less influenced by short-term variability in rainfall than western grasslands, the effects of precipitation change are likely to be more predictable in eastern grasslands because the timescales of variability that must be resolved are relatively longer. We postulate increasing regional heterogeneity in grassland C exchanges in the Great Plains in coming decades. en_US
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.subject Grassland en_US
dc.subject Eastern Great Plains en_US
dc.subject Western Great Plains en_US
dc.subject Eddy covariance en_US
dc.subject Meteorological data en_US
dc.subject C exchanges en_US
dc.subject Great Plans grasslands
dc.subject Carbon exchanges
dc.subject.lcsh Great Plains--Climate
dc.subject.lcsh Grasslands
dc.subject.lcsh Precipitation variability
dc.title The sensitivity of carbon exchanges in Great Plains grasslands to precipitation variability en_US
dc.type Article en_US
dc.publisher.faculty Arts and Science en_US
dc.publisher.department Department of Biological Sciences en_US
dc.description.peer-review Yes en_US
dc.publisher.institution University of Wyoming en_US
dc.publisher.institution USGS Colorado Plateau Research Station en_US
dc.publisher.institution University of Kansas en_US
dc.publisher.institution University of Delaware en_US
dc.publisher.institution University of New Mexico en_US
dc.publisher.institution University of Lethbridge en_US
dc.publisher.institution South Dakota State University en_US
dc.publisher.institution University of Nebraska en_US

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