Jordi Sardans1,2, Helena Vallicrosa3,4, Paolo Zuccarini3,4, Gerard Farré-Armengol3,4, Marcos Fernández-Martínez5, Guille Peguero3,4, Albert Gargallo-Garriga3,4, Philippe Ciais6, Ivan A Janssens5, Michael Obersteiner7, Andreas Richter8, Josep Peñuelas3,4. 1. CSIC, Global Ecology Unit CREAF-CEAB-UAB, Bellaterra, Spain. j.sardans@creaf.uab.cat. 2. CREAF, Cerdanyola del Vallès, Spain. j.sardans@creaf.uab.cat. 3. CSIC, Global Ecology Unit CREAF-CEAB-UAB, Bellaterra, Spain. 4. CREAF, Cerdanyola del Vallès, Spain. 5. PLECO (Plants and Ecosystems), Department of Biology, University of Antwerp, Wilrijk, Belgium. 6. Laboratoire des Sciences du Climat et de l'Environnement, IPSL, Gif-sur-Yvette, France. 7. International Institute for Applied Systems Analysis (IIASA), Ecosystems Services and Management, Laxenburg, Austria. 8. Terrestrial Ecosystem Research, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria.
Abstract
The possibility of using the elemental compositions of species as a tool to identify species/genotype niche remains to be tested at a global scale. We investigated relationships between the foliar elemental compositions (elementomes) of trees at a global scale with phylogeny, climate, N deposition and soil traits. We analysed foliar N, P, K, Ca, Mg and S concentrations in 23,962 trees of 227 species. Shared ancestry explained 60-94% of the total variance in foliar nutrient concentrations and ratios whereas current climate, atmospheric N deposition and soil type together explained 1-7%, consistent with the biogeochemical niche hypothesis which predicts that each species will have a specific need for and use of each bio-element. The remaining variance was explained by the avoidance of nutritional competition with other species and natural variability within species. The biogeochemical niche hypothesis is thus able to quantify species-specific tree niches and their shifts in response to environmental changes.
The possibility of using the elemental compositions of species as a tool to identify species/genotype niche remains to be tested at a global scale. We investigated relationships between the foliar elemental compositions (elementomes) of trees at a global scale with phylogeny, climate, N deposition and soil traits. We analysed foliar N, P, K, Ca, n class="Chemical">Mg anpan>d S concentrations in 23,962 trees of 227 species. Shared anpan>cestry explained 60-94% of the total varianpan>ce in foliar nutrient concentrations anpan>d ratios whereas current climate, atmospheric N deposition anpan>d soil type together explained 1-7%, consistent with the biogeochemical niche hypothesis which predicts that each species will have a specific need for anpan>d use of each bio-element. The remaining varianpan>ce was explained by the avoidanpan>ce of nutritional competition with other species anpan>d natural variability within species. The biogeochemical niche hypothesis is thus able to quanpan>tify species-specific tree niches anpan>d their shifts in response to environmental chanpan>ges.
Authors: Heidi K Swanson; Martin Lysy; Michael Power; Ashley D Stasko; Jim D Johnson; James D Reist Journal: Ecology Date: 2015-02 Impact factor: 5.499
Authors: Josep Peñuelas; Marcos Fernández-Martínez; Philippe Ciais; David Jou; Shilong Piao; Michael Obersteiner; Sara Vicca; Ivan A Janssens; Jordi Sardans Journal: Ecology Date: 2019-03-22 Impact factor: 5.499