Institut for Biologi

Aarhus University Seal / Aarhus Universitets segl

J.-C. Svenning

Global change, novel ecosystems and the ecological restoration of post-industrial areas: The case of a former brown coal mine in Søby, Denmark

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

DOI

Questions: Can multi-decadal vegetation changes in a decommissioned brown coal mine be attributed to global-change forcing? Given novel drivers of community assembly and ongoing global change, what are sensible restoration goals and strategies for large post-industrial areas?. Location: A decommissioned brown coal mine near Søby, central Denmark (56°01′45′′ N, 9°04′4′′ E). Methods: We resurveyed the plant communities of the mine 31 years after an initial survey. Changes in the prevalence of exotic species and species indicator values for environmental conditions were used to link the observed vegetation changes to global change factors. Results: The plant communities, including their unmined reference sites, changed over the 31-year period toward plant communities with higher proportions of exotics, nitrophilous, warmth- and moisture-indicating species, and species of low foraging quality for deer. The changes are consistent with the novel drivers of community assembly at the site, such as the introduction of exotic species, increased nitrogen deposition, elevated temperatures, steadily increasing groundwater level post mining, and the massive comeback of red deer. Conclusions: The global-change forcing of novel plant communities suggests that it is becoming increasingly difficult to restore historical references. It may thus be more sensible to acknowledge novelty and adopt an open-ended approach for the restoration of this and similar post-industrial areas, e.g. using rewilding principles to promote biodiverse self-sustaining ecosystems.

OriginalsprogEngelsk
Artikelnummere12605
TidsskriftApplied Vegetation Science
Vol/bind24
Nummer3
Antal sider12
ISSN1402-2001
DOI
StatusUdgivet - jul. 2021

Bibliografisk note

Funding Information:
This work is a contribution to JCS?s Carlsberg Foundation Semper Ardens project MegaPast2Future (grant CF16-0005), his VILLUM Investigator project ?Biodiversity Dynamics in a Changing World? funded by VILLUM FONDEN (grant 16549), and the Danish National Research Foundation Niels Bohr professorship project Aarhus University Research on the Anthropocene (AURA) We thank the Danish Nature Agency for assistance and local landowners for permission to do research on their land.

Funding Information:
This work is a contribution to JCS’s Carlsberg Foundation Semper Ardens project MegaPast2Future (grant CF16‐0005), his VILLUM Investigator project “Biodiversity Dynamics in a Changing World” funded by VILLUM FONDEN (grant 16549), and the Danish National Research Foundation Niels Bohr professorship project Aarhus University Research on the Anthropocene (AURA)

Publisher Copyright:
© 2021 The Authors. Applied Vegetation Science published by John Wiley & Sons Ltd on behalf of International Association for Vegetation Science

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