Exotic tree seedlings are much more competitive than natives but show underyielding when growing together
| Autor: | André Terwei, Heike Kawaletz, Peter Annighöfer, Christian Ammer, Inga Mölder, Stefan Zerbe |
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| Rok vydání: | 2013 |
| Předmět: |
0106 biological sciences
Carpinus betulus Biomass (ecology) Ecology biology media_common.quotation_subject Biodiversity Species diversity Introduced species Plant Science Interspecific competition 15. Life on land biology.organism_classification 010603 evolutionary biology 01 natural sciences Invasive species Competition (biology) Ecology Evolution Behavior and Systematics 010606 plant biology & botany media_common |
| Zdroj: | Journal of Plant Ecology. 6:305-315 |
| ISSN: | 1752-993X 1752-9921 |
| Popis: | Aims Invasive species continue to be a worldwide threat to ecosystems mainly as a cause for biodiversity loss. Forest ecosystems, for example, are subject to a change in species composition due to the invasion of exotic species. s pecifying the attributes that cause the strong competitiveness of several exotic species may improve the ability to understand and effectively manage plant invasions in the future. In this study the following hypotheses were tested: (1) biomass production of below- and aboveground plant compo nents of the exotic tree species is higher than that of the natives, resulting in a higher competitiveness of the exotics; (2) the exclu sion of root competition has a positive effect on the biomass pro duction of the inferior native species; and (3) mixtures of native and exotic species yield a higher biomass production than the respective monocultures. Methods a pot experiment, containing about 2000 tree seedlings, was established. We investigated the biomass productivity and growth reactions of two native ( Quercus robur l., Carpinus betulus l.) and two exotic tree species ( Prunus serotina Ehrh., Robinia pseudoacacia l.) in different intra- and interspecific, competitive situations with and without the influence of root competition. Important Findings |
| Databáze: | OpenAIRE |
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