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Title (Primary) Community change can buffer chronic nitrogen impacts, but multiple nutrients tip the scale
Author Wilcots, M.E.; Harpole, W.S.; Seabloom, E.W.; Borer, E.T.;
Journal Ecology
Year 2021
Department iDiv; PHYDIV;
Volume 102
Issue 6
Language englisch;
Supplements https://esajournals.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Fecy.3355&file=ecy3355-sup-0001-AppendixS1.pdf
Keywords nitrogen deposition; species turnover; global change; nutrient co‐limitation; plant functional group
Abstract Anthropogenic nitrogen (N) inputs are causing large changes in ecosystems worldwide. Many previous studies have examined the impact of N on terrestrial ecosystems; however, most have added N at rates that are much higher than predicted future deposition rates. Here, we present the results from a gradient of experimental N addition (0‐10 g N m‐2) in a temperate grassland. After a decade of N addition, we found that all levels of N addition changed plant functional group composition, likely indicating altered function for plant communities exposed to ten years of N inputs. However, N addition only had weak impacts on species composition and this functional group shift was not driven by any particular species, suggesting high levels of functional redundancy among grasslands species. Adding other nutrients (P, K, and micronutrients) in combination with N caused substantially greater changes in the relative abundance of species and functional groups. Together, these results suggest that compositional change within functional groups may buffer grasslands from impacts of N deposition, but concurrent eutrophication with other elements will likely lead to substantial changes in plant composition and biomass.
ID 24511
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24511
Wilcots, M.E., Harpole, W.S., Seabloom, E.W., Borer, E.T. (2021):
Community change can buffer chronic nitrogen impacts, but multiple nutrients tip the scale
Ecology 102 (6), e03355