Eutrophication weakens stabilizing effects of diversity in natural grasslands

• Autores: Hautier, Yann; Seabloom, Eric; Borer, Elizabeth T; Adler, Peter; Harpole, E. Stanley; Hillebrand, Helmut; Lind, Eric M.; McDougall, Andrew S.; Stevens, Carly J.; Bakker, Jonathan D; Buckley, Yvonne M.; Chu, Chengjin; Collins, Scott L.; Daleo, Pedro; Damschen, Ellen I.; Davies, Kendi F.; Fay, Philip A.; Frin, Jennifer; Gruner, Daniel S.; Jin, Virginia L.; Klein, Julia A.; Knops, Johannes M. H.; La Pierre, Kimberly J.; Li, Wei; McCulley, Rebecca L.; Melbourne, Brett A.; Moore, Joslin L.; O'Halloran, Lydia R.; Prober, Suzanne M.; Risch, Anita C.; Sankaran, Mahesh; Schuetz, Martin; Hector, Andy
• Año de publicación: 2014
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: Diversity; Stability; Productivity; Eutrophication
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Studies of experimental grassland communities1,2,3,4,5,6,7 have demonstrated that plant diversity can stabilize productivity through species asynchrony, in which decreases in the biomass of some species are compensated for by increases in others1,2. However, it remains unknown whether these findings are relevant to natural ecosystems, especially those for which species diversity is threatened by anthropogenic global change8,9,10,11. Here we analyse diversity–stability relationships from 41 grasslands on five continents and examine how these relationships are affected by chronic fertilization, one of the strongest drivers of species loss globally8. Unmanipulated communities with more species had greater species asynchrony, resulting in more stable biomass production, generalizing a result from biodiversity experiments to real-world grasslands. However, fertilization weakened the positive effect of diversity on stability. Contrary to expectations, this was not due to species loss after eutrophication but rather to an increase in the temporal variation of productivity in combination with a decrease in species asynchrony in diverse communities. Our results demonstrate separate and synergistic effects of diversity and eutrophication on stability, emphasizing the need to understand how drivers of global change interactively affect the reliable provisioning of ecosystem services in real-world systems.
Fil: Hautier, Yann. University of Minnesota; Estados Unidos. Universitat Zurich; Suiza
Fil: Seabloom, Eric. University of Minnesota; Estados Unidos
Fil: Borer, Elizabeth T. University of Minnesota; Estados Unidos
Fil: Adler, Peter. State University of Utah; Estados Unidos
Fil: Harpole, E. Stanley. University of Iowa; Estados Unidos
Fil: Hillebrand, Helmut. University Oldenburg; Alemania
Fil: Lind, Eric M.. University of Minnesota; Estados Unidos
Fil: McDougall, Andrew S.. University of Guelph; Canadá
Fil: Stevens, Carly J.. Lancaster University; Reino Unido
Fil: Bakker, Jonathan D. University of Washington; Estados Unidos
Fil: Buckley, Yvonne M.. University of Queensland; Australia. Trinity College Dublin; Irlanda
Fil: Chu, Chengjin. Lanzhou University; China
Fil: Collins, Scott L.. University Of New Mexico; Estados Unidos
Fil: Daleo, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencia Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
Fil: Damschen, Ellen I.. University of Wisconsin; Estados Unidos
Fil: Davies, Kendi F.. State University of Colorado Boulder; Estados Unidos
Fil: Fay, Philip A.. United States Department of Agriculture Agricultural Research Service; Estados Unidos
Fil: Frin, Jennifer. Queensland University of Technology; Australia
Fil: Gruner, Daniel S.. University of Maryland; Estados Unidos
Fil: Jin, Virginia L.. United States Department of Agriculture Agricultural Research Service; Estados Unidos
Fil: Klein, Julia A.. State University of Colorado - Fort Collins; Estados Unidos
Fil: Knops, Johannes M. H.. University Of Nebraska; Estados Unidos
Fil: La Pierre, Kimberly J.. University of California at Berkeley; Estados Unidos
Fil: Li, Wei. Southwest Forestry University; China
Fil: McCulley, Rebecca L.. University Of Kentucky; Estados Unidos
Fil: Melbourne, Brett A.. State University of Colorado - Fort Collins; Estados Unidos
Fil: Moore, Joslin L.. University of Melbourne; Australia. Monash University; Australia
Fil: O'Halloran, Lydia R.. Oregon State University; Estados Unidos
Fil: Prober, Suzanne M.. CSIRO Ecosystem Sciences; Australia
Fil: Risch, Anita C.. Swiss Federal Institute for Forest; Suiza
Fil: Sankaran, Mahesh. University of Leeds; Reino Unido. National Centre for Biological Sciences; India
Fil: Schuetz, Martin. Swiss Federal Institute for Forest; Suiza
Fil: Hector, Andy. University of Oxford; Reino Unido