Registro:
Título en inglés:
Richness, not evenness, varies across water availability gradients in grassy biomes on five continents
Autor/es:
Smith, Melinda D.; Koerner, Sally E.; Avolio, Meghan L.; Komatsu, Kimberly J.; Eby, Stephanie; Forrestel, Elisabeth J.; Collins, Scott L.; Wilcox, Kevin R.; Oñatibia, Gastón R.; Yahdjian, María Laura
Filiación:
Smith, Melinda D. Colorado State University. Department of Biology. Fort Collins, CO, USA.
Smith, Melinda D. Colorado State University. Graduate Degree Program in Ecology. Fort Collins, CO, USA.
Koerner, Sally E. University of North Carolina at Greensboro. Department of Biology. Greensboro, NC, USA.
Avolio, Meghan L. Johns Hopkins University. Morton K. Blaustein Department of Earth and Planetary Sciences. Baltimore, MD, USA.
Komatsu, Kimberly J. Smithsonian Environmental Research Center. Edgewater, MD, USA.
Eby, Stephanie. Northeastern University. Department of Marine and Environmental Sciences. Boston, MA, USA.
Forrestel, Elisabeth J. University of California. Department of Viticulture and Enology. Davis, CA, USA.
Collins, Scott L. University of New Mexico. Department of Biology. Albuquerque, NM, USA.
Wilcox, Kevin R. University of Wyoming. Department of Ecosystem Science and Management. Laramie. WY, USA.
Oñatibia, Gastón R. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina.
Oñatibia, Gastón R. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Oñatibia, Gastón R. CONICET – Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Yahdjian, María Laura. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina.
Yahdjian, María Laura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Yahdjian, María Laura. CONICET – Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Título revista:
Oecologia
ISSN:
0029-8549 (impreso); 1432-1939 (en línea)
Temas:
CLIMATE; DIVERSITY; GRASSLANDS; PLANT SPECIES RICHNESS; PRECIPITATION
Url al documento en Intranet FAUBA:
Resumen:
We sought to understand the role that water availability (expressed as an aridity index) plays in determining regional and global patterns of richness and evenness, and in turn how these water availability – diversity relationships may result in different richness – evenness relationships at regional and global scales. We examined relationships between water availability, richness and evenness for eight grassy biomes spanning broad water availability gradients on five continents. Our study found that relationships between richness and water availability switched from positive for drier (South Africa, Tibet and USA) vs. negative for wetter (India) biomes, though were not significant for the remaining biomes. In contrast, only the India biome showed a significant relationship between water availability and evenness, which was negative. Globally, the richness – water availability relationship was hump-shaped, however, not significant for evenness. At the regional scale, a positive richness – evenness relationship was found for grassy biomes in India and Inner Mongolia, China. In contrast, this relationship was weakly concave - up globally. These results suggest that different, independent factors are determining patterns of species richness and evenness in grassy biomes, resulting in differing richness – evenness relationships at regional and global scales. As a consequence, richness and evenness may respond very differently across spatial gradients to anthropogenic changes, such as climate change.
Citación:
---------- APA ----------
Smith, M. D.; Koerner, Sally E.; Avolio, M. L.; Komatsu, K. J.; Eby, S.; Forrestel, E. J.; Collins, S. L.; Wilcox, K. R.; Oñatibia, G. R. & Yahdjian, M. L. (2022).Richness, not evenness, varies across water availability gradients in grassy biomes on five continents.Oecologia,199, (3),p.649-659
10.1007/s00442-022-05208-6
---------- CHICAGO ----------
Smith, Melinda D.,Koerner, Sally E.,Avolio, Meghan L.,Komatsu, Kimberly J.,Eby, Stephanie,Forrestel, Elisabeth J., et al..2022. "Richness, not evenness, varies across water availability gradients in grassy biomes on five continents".Oecologia 199, no.3:649-659.
Recuperado de http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2022smith