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@ARTICLE{Puttock:111945,
      author       = {Puttock, A. and Dungait, J.A.J. and Bol, R. and Dixon, E.R.
                      and Macleod, C.J.A. and Brazier, R.E.},
      title        = {{S}table carbon isotope analysis of fluvial sediment fluxes
                      over two contrasting {C}4-{C}3 semi-arid vegetation
                      transitions},
      journal      = {Rapid communications in mass spectrometry},
      volume       = {26},
      issn         = {0951-4198},
      address      = {New York, NY},
      publisher    = {Wiley Interscience},
      reportid     = {PreJuSER-111945},
      pages        = {2386 - 2392},
      year         = {2012},
      note         = {This research was supported by the University of Exeter and
                      Rothamsted Research at North Wyke, NSF award DEB-0217774 to
                      the University of New Mexico for Long-term Ecological
                      Research and a British Society for Geomorphology student
                      travel grant. This work represents part of the BBSRC-funded
                      programmes at Rothamsted Research on Sustainable Soil
                      Function and Bioenergy and Climate Change. Additional thanks
                      go to everyone from the Sevilleta LTER/USFWS who made
                      fieldwork for this research possible and enjoyable. Finally,
                      thanks go to the anonymous reviewers for their helpful
                      feedback which improved the manuscript.},
      abstract     = {Globally, many drylands are experiencing the encroachment
                      of woody vegetation into grasslands. These changes in
                      ecosystem structure and processes can result in increased
                      sediment and nutrient fluxes due to fluvial erosion. As
                      these changes are often accompanied by a shift from C(4) to
                      C(3) vegetation with characteristic δ(13) C values, stable
                      isotope analysis provides a promising mechanism for tracing
                      these fluxes.Input vegetation, surface sediment and
                      fluvially eroded sediment samples were collected across two
                      contrasting C(4) -C(3) dryland vegetation transitions in New
                      Mexico, USA. Isotope ratio mass spectrometric analyses were
                      performed using a Carlo Erba NA2000 analyser interfaced to a
                      SerCon 20-22 isotope ratio mass spectrometer to determine
                      bulk δ(13) C values.Stable isotope analyses of contemporary
                      input vegetation and surface sediments over the monitored
                      transitions showed significant differences (p <0.05) in the
                      bulk δ(13) C values of C(4) Bouteloua sp. (grama)
                      grassland, C(3) Larrea tridentata (creosote) shrubland and
                      C(3) Pinus edulis/Juniperus monosperma (piñon-juniper)
                      woodland sites. Significantly, this distinctive δ(13) C
                      value was maintained in the bulk δ(13) C values of
                      fluvially eroded sediment from each of the sites, with no
                      significant variation between surface sediment and eroded
                      sediment values.The significant differences in bulk δ(13) C
                      values between sites were dependent on vegetation input.
                      Importantly, these values were robustly expressed in
                      fluvially eroded sediments, suggesting that stable isotope
                      analysis is suitable for tracing sediment fluxes. Due to the
                      prevalent nature of these dryland vegetation transitions in
                      the USA and globally, further development of stable isotope
                      ratio mass spectrometry has provided a valuable tool for
                      enhanced understanding of functional changes in these
                      ecosystems.},
      keywords     = {J (WoSType)},
      cin          = {IBG-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Biochemical Research Methods / Chemistry, Analytical /
                      Spectroscopy},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:22976204},
      UT           = {WOS:000308880500003},
      doi          = {10.1002/rcm.6257},
      url          = {https://juser.fz-juelich.de/record/111945},
}