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  The relative importance of seed competition, resource competition and perturbations on community structure

Bohn, K., Dyke, J. G., Pavlick, R., Reineking, B., Reu, B., & Kleidon, A. (2011). The relative importance of seed competition, resource competition and perturbations on community structure. Biogeosciences, 8(5), 1107-1120. doi:10.5194/bg-8-1107-2011.

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http://dx.doi.org/10.5194/bg-8-1107-2011 (Verlagsversion)
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 Urheber:
Bohn, K.1, Autor           
Dyke, J. G.2, Autor           
Pavlick, R.1, Autor           
Reineking, B., Autor
Reu, B.1, Autor           
Kleidon, A.3, Autor           
Affiliations:
1Terrestrial Biosphere, Research Group Biospheric Theory and Modelling, Dr. A. Kleidon, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497792              
2Energy and Earth System, Research Group Biospheric Theory and Modelling, Dr. A. Kleidon, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497790              
3Research Group Biospheric Theory and Modelling, Dr. A. Kleidon, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497761              

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Schlagwörter: global vegetation model species coexistence plant-communities biosphere model trait responses climate-change dynamics constraints disturbance diversity
 Zusammenfassung: While the regional climate is the primary selection pressure for whether a plant strategy can survive, however, competitive interactions strongly affect the relative abundances of plant strategies within communities. Here, we investigate the relative importance of competition and perturbations on the development of vegetation community structure. To do so, we develop DIVE (Dynamics and Interactions of VEgetation), a simple general model that links plant strategies to their competitive dynamics, using growth and reproduction characteristics that emerge from climatic constraints. The model calculates population dynamics based on establishment, mortality, invasion and exclusion in the presence of different strengths of perturbations, seed and resource competition. The highest levels of diversity were found in simulations without competition as long as mortality is not too high. However, reasonable successional dynamics were only achieved when resource competition is considered. Under high levels of competition, intermediate levels of perturbations were required to obtain coexistence. Since succession and coexistence are observed in plant communities, we conclude that the DIVE model with competition and intermediate levels of perturbation represents an adequate way to model population dynamics. Because of the simplicity and generality of DIVE, it could be used to understand vegetation structure and functioning at the global scale and the response of vegetation to global change.

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Sprache(n): eng - English
 Datum: 2011
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.5194/bg-8-1107-2011
ISI: ://000291003200005
Anderer: BGC1510
 Art des Abschluß: -

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Titel: Biogeosciences
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Katlenburg-Lindau, Germany : Copernicus GmbH on behalf of the European Geosciences Union
Seiten: - Band / Heft: 8 (5) Artikelnummer: - Start- / Endseite: 1107 - 1120 Identifikator: CoNE: https://pure.mpg.de/cone/journals/resource/111087929276006
ISSN: 1726-4170