%0 Journal Article %1 citeulike:2485715 %A Bowling, David R. %A Pataki, Diane E. %A Randerson, James T. %C Department of Biology, 257 South, 1400 East, University of Utah, Salt Lake City, UT 84112-0820, USA; ; Department of Earth System Science and ; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, USA %D 2008 %I Blackwell Publishing %J New Phytologist %K isotopic_composition %N 1 %P 24--40 %R 10.1111/j.1469-8137.2007.02342.x %T Carbon isotopes in terrestrial ecosystem pools and CO₂ fluxes %U http://dx.doi.org/10.1111/j.1469-8137.2007.02342.x %V 178 %X Stable carbon isotopes are used extensively to examine physiological, ecological, and biogeochemical processes related to ecosystem, regional, and global carbon cycles and provide information at a variety of temporal and spatial scales. Much is known about the processes that regulate the carbon isotopic composition (03B413C) of leaf, plant, and ecosystem carbon pools and of photosynthetic and respiratory carbon dioxide (CO2) fluxes. In this review, systematic patterns and mechanisms underlying variation in 03B413C of plant and ecosystem carbon pools and fluxes are described. We examine the hypothesis that the 03B413C of leaf biomass can be used as a reference point for other carbon pools and fluxes, which differ from the leaf in 03B413C in a systematic fashion. Plant organs are typically enriched in 13C relative to leaves, and most ecosystem pools and respiratory fluxes are enriched relative to sun leaves of dominant plants, with the notable exception of root respiration. Analysis of the chemical and isotopic composition of leaves and leaf respiration suggests that growth respiration has the potential to contribute substantially to the observed offset between the 03B413C values of ecosystem respiration and the bulk leaf. We discuss the implications of systematic variations in 03B413C of ecosystem pools and CO2 fluxes for studies of carbon cycling within ecosystems, as well as for studies that use the 03B413C of atmospheric CO2 to diagnose changes in the terrestrial biosphere over annual to millennial time scales. New Phytologist (2008) 178: 24201340\copyright The Authors (2008). Journal compilation \copyrightNew Phytologist (2008)doi: 10.1111/j.1469-8137.2007.02342.x

@article{citeulike:2485715, abstract = {{Stable carbon isotopes are used extensively to examine physiological, ecological, and biogeochemical processes related to ecosystem, regional, and global carbon cycles and provide information at a variety of temporal and spatial scales. Much is known about the processes that regulate the carbon isotopic composition (03B413C) of leaf, plant, and ecosystem carbon pools and of photosynthetic and respiratory carbon dioxide (CO2) fluxes. In this review, systematic patterns and mechanisms underlying variation in 03B413C of plant and ecosystem carbon pools and fluxes are described. We examine the hypothesis that the 03B413C of leaf biomass can be used as a reference point for other carbon pools and fluxes, which differ from the leaf in 03B413C in a systematic fashion. Plant organs are typically enriched in 13C relative to leaves, and most ecosystem pools and respiratory fluxes are enriched relative to sun leaves of dominant plants, with the notable exception of root respiration. Analysis of the chemical and isotopic composition of leaves and leaf respiration suggests that growth respiration has the potential to contribute substantially to the observed offset between the 03B413C values of ecosystem respiration and the bulk leaf. We discuss the implications of systematic variations in 03B413C of ecosystem pools and CO2 fluxes for studies of carbon cycling within ecosystems, as well as for studies that use the 03B413C of atmospheric CO2 to diagnose changes in the terrestrial biosphere over annual to millennial time scales. New Phytologist (2008) 178: 24201340{\copyright} The Authors (2008). Journal compilation {\copyright}New Phytologist (2008)doi: 10.1111/j.1469-8137.2007.02342.x}}, added-at = {2010-11-30T22:39:03.000+0100}, address = {Department of Biology, 257 South, 1400 East, University of Utah, Salt Lake City, UT 84112-0820, USA; ; Department of Earth System Science and ; Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697, USA}, author = {Bowling, David R. and Pataki, Diane E. and Randerson, James T.}, biburl = {https://www.bibsonomy.org/bibtex/20314226e35b4afb688586e576c251564/smatthiesen}, citeulike-article-id = {2485715}, citeulike-linkout-0 = {http://dx.doi.org/10.1111/j.1469-8137.2007.02342.x}, citeulike-linkout-1 = {http://www.ingentaconnect.com/content/bsc/nph/2008/00000178/00000001/art00004}, citeulike-linkout-2 = {http://www3.interscience.wiley.com/cgi-bin/abstract/119394702/ABSTRACT}, doi = {10.1111/j.1469-8137.2007.02342.x}, interhash = {886bba6a1c3a1aa07b51b23a30de3e4a}, intrahash = {0314226e35b4afb688586e576c251564}, issn = {1469-8137}, journal = {New Phytologist}, keywords = {isotopic_composition}, month = {April}, number = 1, pages = {24--40}, posted-at = {2010-02-11 12:50:33}, priority = {2}, publisher = {Blackwell Publishing}, timestamp = {2010-12-02T13:51:23.000+0100}, title = {{Carbon isotopes in terrestrial ecosystem pools and CO₂ fluxes}}, url = {http://dx.doi.org/10.1111/j.1469-8137.2007.02342.x}, volume = 178, year = 2008 }