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Thorn, Simon ; Bässler, Claus ; Bernhardt‐Römermann, Markus ; Cadotte, Marc ; Heibl, Christoph ; Schäfer, Hanno ; Seibold, Sebastian ; Müller, Jörg:
Changes in the dominant assembly mechanism drive species loss caused by declining resources.
In: Ecology Letters.
Bd. 19
(2016)
Heft 2
.
- S. 163-170.
ISSN 1461-0248
DOI: https://doi.org/10.1111/ele.12548
Abstract
The species–energy hypothesis predicts that more productive areas support higher species richness. Conversely, when resources are reduced, species richness is reduced. Empirical tests of whether extinctions are predominantly caused by environmental constraints or competitive exclusion are lacking. We experimentally reduced dead wood to c. 15% of the initial amount after a major windstorm and examined changes in assembly mechanisms by combining trait-based and evolutionary species dissimilarities of eight taxonomic groups, differing in their dependence on dead wood (saproxylic/non-saproxylic). Species richness and assembly mechanisms of non-saproxylic taxa remained largely unaffected by removal of dead wood. By contrast, extinctions of saproxylic species were caused by reversing the predominant assembly mechanisms (e.g. increasing importance of competitive exclusion for communities assembled through environmental filtering or vice versa). We found no evidence for an intensification of the predominant assembly mechanism (e.g. competitive exclusion becoming stronger in a competitively structured community).
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Ökologie der Pilze > Lehrstuhl Ökologie der Pilze - Univ.-Prof. Dr. Claus Bässler Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 550 Geowissenschaften, Geologie 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie |
| Eingestellt am: | 15 Nov 2024 09:36 |
| Letzte Änderung: | 15 Nov 2024 09:36 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/91145 |