Harry Olde Venterink

Abstract Mammalian herbivores play a pivotal role in nutrient cycling and plant community composition. Their excreta and grazing activity influence plant diversity, but the relative or interactive effects of these influences are unclear. We manipulated dung quantity, quality (three herbivores with varying dung-N:P), and grazing type (bulk, selective, no) in a 3-year experiment.

Data availability statement Data are available from the Dryad Digital Repository: https://datadryad.org/dataset/doi:10.5061/dryad.98sf7m0x7 (Goossens et al. 2025). Supporting Information Filename Description oik21395-sup-0001-AppendixS1.docx1.5 MB Supplementary Material References , and 2022. Effects of soil conditioning, root and shoot litter addition interact to determine the intensity of plant–soil feedback. – Oikos 2022: oik.09025. 2002.

Abstract Nutrient enrichment typically causes local plant diversity declines. A common but untested expectation is that nutrient enrichment also reduces variation in nutrient conditions among localities and selects for a smaller pool of species, causing greater diversity declines at larger than local scales and thus biotic homogenization.