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Journal article

Isotopic evidence for oligotrophication of terrestrial ecosystems.

  • Craine JM Jonah Ventures, Boulder, CO, USA. josephmcraine@gmail.com.
  • Elmore AJ Appalachian Laboratory, University of Maryland Center for Environmental Science, Frostburg, MD, USA.
  • Wang L Department of Earth Sciences, Indiana University-Purdue University Indianapolis, Indianapolis, IN, USA.
  • Aranibar J Facultad de Ciencias Exactas y Naturales (FCEN-UNCuyo), Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA-CONICET), Mendoza, Argentina.
  • Bauters M MB Isotope Bioscience Laboratory - ISOFYS, Ghent University, Ghent, Belgium.
  • Boeckx P MB Isotope Bioscience Laboratory - ISOFYS, Ghent University, Ghent, Belgium.
  • Crowley BE Department of Geology , University of Cincinnati, Cincinnati, OH, USA.
  • Dawes MA Swiss Federal Institute for Forest, Snow and Landscape Research - WSL Forest soils and Biogeochemistry, Birmensdorf, Switzerland.
  • Delzon S BIOGECO, INRA University of Bordeaux, Pessac, France.
  • Fajardo A Centro de Investigación en Ecosistemas de la Patagonia, Coyhaique, Chile.
  • Fang Y CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.
  • Fujiyoshi L Research Institute for Humanity and Nature, Kyoto, Japan.
  • Gray A NERC Centre for Ecology and Hydrology, Penicuik, UK.
  • Guerrieri R Centre for Ecological Research and Forestry Applications, Barcelona, Spain.
  • Gundale MJ Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden.
  • Hawke DJ Department of Science and Primary Industries, Ara Institute of Canterbury, Christchurch, New Zealand.
  • Hietz P Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Austria.
  • Jonard M Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium.
  • Kearsley E Computational and Applied Vegetation Ecology lab, Department of Environment, Ghent University, Ghent, Belgium.
  • Kenzo T Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan.
  • Makarov M Soil Science Department, Moscow M.V. Lomonosov State University, Moscow, Russia.
  • Marañón-Jiménez S Department of Ecology, Faculty of Sciences, University of Granada, Granada, Spain.
  • McGlynn TP Department of Biology, California State University Dominguez Hills, Carson, CA, USA.
  • McNeil BE Department of Geology and Geography, West Virginia University, Morgantown, WV, USA.
  • Mosher SG Department of Geology , University of Cincinnati, Cincinnati, OH, USA.
  • Nelson DM Appalachian Laboratory, University of Maryland Center for Environmental Science, Frostburg, MD, USA.
  • Peri PL Instituto Nacional de Tecnología Agropecuaria, CONICET Universidad Nacional de la Patagonia Austral, Río Gallegos, Argentina.
  • Roggy JC INRA, UMR Ecologie des Forêts de Guyane, Campus Agronomique, Kourou, Guyane Française, France.
  • Sanders-DeMott R Department of Biology, Boston University, Boston, MA, USA.
  • Song M Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Szpak P Department of Anthropology, Trent University, Peterborough, Ontario, Canada.
  • Templer PH Department of Biology, Boston University, Boston, MA, USA.
  • Van der Colff D South African National Biodiversity Institute, Cape Town, South Africa.
  • Werner C Ecosystem Physiology, University of Freiburg, Freiburg, Germany.
  • Xu X Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH, USA.
  • Yang Y Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
  • Yu G Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
  • Zmudczyńska-Skarbek K Faculty of Biology, Department of Vertebrate Ecology and Zoology, University of Gdańsk, Gdańsk, Poland.
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  • 2018-10-24
Published in:
  • Nature ecology & evolution. - 2018
English Human societies depend on an Earth system that operates within a constrained range of nutrient availability, yet the recent trajectory of terrestrial nitrogen (N) availability is uncertain. Examining patterns of foliar N concentrations and isotope ratios (δ15N) from more than 43,000 samples acquired over 37 years, here we show that foliar N concentration declined by 9% and foliar δ15N declined by 0.6-1.6‰. Examining patterns across different climate spaces, foliar δ15N declined across the entire range of mean annual temperature and mean annual precipitation tested. These results suggest declines in N supply relative to plant demand at the global scale. In all, there are now multiple lines of evidence of declining N availability in many unfertilized terrestrial ecosystems, including declines in δ15N of tree rings and leaves from herbarium samples over the past 75-150 years. These patterns are consistent with the proposed consequences of elevated atmospheric carbon dioxide and longer growing seasons. These declines will limit future terrestrial carbon uptake and increase nutritional stress for herbivores.
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  • English
Open access status
green
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https://sonar.ch/global/documents/2429
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