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Bitte verwenden Sie diesen Link, wenn Sie dieses Dokument zitieren oder verlinken wollen: https://nbn-resolving.org/urn:nbn:de:gbv:9-opus-40885

Invader presence disrupts the stabilizing effect of species richness in plant community recovery after drought

  • Abstract Higher biodiversity can stabilize the productivity and functioning of grassland communities when subjected to extreme climatic events. The positive biodiversity–stability relationship emerges via increased resistance and/or recovery to these events. However, invader presence might disrupt this diversity–stability relationship by altering biotic interactions. Investigating such disruptions is important given that invasion by non‐native species and extreme climatic events are expected to increase in the future due to anthropogenic pressure. Here we present one of the first multisite invader × biodiversity × drought manipulation experiment to examine combined effects of biodiversity and invasion on drought resistance and recovery at three semi‐natural grassland sites across Europe. The stability of biomass production to an extreme drought manipulation (100% rainfall reduction; BE: 88 days, BG: 85 days, DE: 76 days) was quantified in field mesocosms with a richness gradient of 1, 3, and 6 species and three invasion treatments (no invader, Lupinus polyphyllus, Senecio inaequidens). Our results suggest that biodiversity stabilized community productivity by increasing the ability of native species to recover from extreme drought events. However, invader presence turned the positive and stabilizing effects of diversity on native species recovery into a neutral relationship. This effect was independent of the two invader's own capacity to recover from an extreme drought event. In summary, we found that invader presence may disrupt how native community interactions lead to stability of ecosystems in response to extreme climatic events. Consequently, the interaction of three global change drivers, climate extremes, diversity decline, and invasive species, may exacerbate their effects on ecosystem functioning.

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Metadaten
Author: Vanessa M. S. Vetter, Juergen Kreyling, Jürgen Dengler, Iva Apostolova, Mohammed A. S. Arfin‐Khan, Bernd J. Berauer, Sigi Berwaers, Hans J. De Boeck, Ivan Nijs, Max A. Schuchardt, Desislava Sopotlieva, Philipp von Gillhausen, Peter A. Wilfahrt, Maja Zimmermann, Anke Jentsch
URN:urn:nbn:de:gbv:9-opus-40885
DOI:https://doi.org/10.1111/gcb.15025
Parent Title (English):Global Change Biology
Document Type:Article
Language:English
Date of first Publication:2020/05/21
Release Date:2020/12/01
Tag:alien invasive species, biological invasion, climate extreme, disturbance, ecosystem functioning, grassland ecosystem, plant–environment interaction, recovery, resilience, resistance
GND Keyword:-
Volume:26
Issue:6
First Page:3539
Last Page:3551
Faculties:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Botanik und Landschaftsökologie & Botanischer Garten
Licence (German):License LogoCreative Commons - Namensnennung