Saatkamp, Arne and Affre, Laurence and Dutoit, Thierry and Poschlod, Peter (2018) Plant traits and population characteristics predict extinctions in a long-term survey of Mediterranean annual plants. BIODIVERSITY AND CONSERVATION, 27 (10). pp. 2527-2540. ISSN 0960-3115, 1572-9710
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Global and local environmental changes lead to frequent plant extinctions many of which occur in man-made habitats such as agricultural fields. Plant traits and site conditions modify risks of extinction, but strength and sense of their effect are not known yet. Here, we present a long-term survey of population sizes for Mediterranean annual plants that we revisited 20 years after their first record to evaluate climate, population size, traits and habitat requirements as drivers of local extinctions. Small populations had an increased probability of extinction in our data-set. Our analyses revealed that seed production and survival of seeds in the soil seed bank decreased extinction rate, whereas plant size increased extinction probability. Mean annual temperature increased extinction rates of annual plants in cereal fields. We discuss these effects as a response to recent and ongoing habitat changes, and discuss how traits may be used to guide conservation practices in the face of local extinctions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LIFE-HISTORY TRAITS; CALCAREOUS GRASSLANDS; GENETIC-STRUCTURE; LOCAL EXTINCTION; NORTHERN FRANCE; DESERT ANNUALS; RARE PLANTS; SEED BANK; LEAF-AREA; LAND-USE; Plant size; Seed banks; Local extinction; Seed number; Specific leaf area |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Botanik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Mar 2020 12:27 |
| Last Modified: | 05 Mar 2020 12:27 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14096 |
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