TY - JOUR T1 - Species loss due to nutrient addition increases with spatial scale in global grasslands JF - Ecology Letters Y1 - 2021 A1 - Seabloom, Eric W. A1 - Batzer, Evan A1 - Chase, Jonathan M. A1 - Stanley Harpole, W. A1 - Adler, Peter B. A1 - Bagchi, Sumanta A1 - Bakker, Jonathan D. A1 - Barrio, Isabel C. A1 - Biederman, Lori A1 - Boughton, Elizabeth H. A1 - Bugalho, Miguel N. A1 - Caldeira, Maria C. A1 - Catford, Jane A. A1 - Daleo, Pedro A1 - Eisenhauer, Nico A1 - Eskelinen, Anu A1 - Haider, Sylvia A1 - Hallett, Lauren M. A1 - Jónsdóttir, Ingibjörg Svala A1 - Kimmel, Kaitlin A1 - Kuhlman, Marirose A1 - MacDougall, Andrew A1 - Molina, Cecilia D. A1 - Moore, Joslin L. A1 - Morgan, John W. A1 - Muthukrishnan, Ranjan A1 - Ohlert, Timothy A1 - Risch, Anita C. A1 - Roscher, Christiane A1 - Schütz, Martin. A1 - Sonnier, Grégory. A1 - Tognetti, Pedro M. A1 - Virtanen, Risto A1 - Wilfahrt, Peter A. A1 - Borer, Elizabeth T. ED - Haddad, Nick AB -

The effects of altered nutrient supplies and herbivore density on species diversity vary with spatial scale, because coexistence mechanisms are scale dependent. This scale dependence may alter the shape of the species–area relationship (SAR), which can be described by changes in species richness (S) as a power function of the sample area (A): S = cAz, where c and z are constants. We analysed the effects of experimental manipulations of nutrient supply and herbivore density on species richness across a range of scales (0.01–75 m2) at 30 grasslands in 10 countries. We found that nutrient addition reduced the number of species that could co-occur locally, indicated by the SAR intercepts (log c), but did not affect the SAR slopes (z). As a result, proportional species loss due to nutrient enrichment was largely unchanged across sampling scales, whereas total species loss increased over threefold across our range of sampling scales.

VL - 24 UR - https://onlinelibrary.wiley.com/doi/10.1111/ele.13838 IS - 10 ER -