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dc.contributor.author Sole, Ricard V.
dc.contributor.author Garcia-Perez Gamarra, Javier
dc.date.accessioned 2008-12-05T10:05:29Z
dc.date.available 2008-12-05T10:05:29Z
dc.date.issued 2002-04-21
dc.identifier.citation Sole , R V & Garcia-Perez Gamarra , J 2002 , ' Biomass-diversity responses and spatial dependencies in disturbed tallgrass prairies ' Journal of Theoretical Biology , pp. 469-480 . , 10.1006/jtbi.2001.2520 en
dc.identifier.other PURE: 90489
dc.identifier.other dspace: 2160/1401
dc.identifier.uri http://hdl.handle.net/2160/1401
dc.identifier.uri http://complex.upf.es/~ricard/BIOMASSprairies.pdf en
dc.description Javier G. P. Gamarra and Ricard V. Sole (2002). Biomass-diversity responses and spatial dependencies in disturbed tallgrass prairies. Journal of Theoretical Biology, 215 (4) pp.469-480 RAE2008 en
dc.description.abstract Monotonic, hump-shaped and zero-correlation productivity–diversity relationships have been found to date in many ecosystems. This diversity of responses has puzzled ecologists in their search for general principles on ecosystem functioning. Some state that the scale of observation is crucial in defining this relationship. We have developed a spatial model of tallgrass prairies where biomass and litter dynamics are defined by uncoupled difference equations. In this system, we periodically apply prescribed fire as a disturbance that propagates through neighboring cells. The model shows percolation thresholds at points where small-scale spatial heterogeneity and large-scale, global correlation coexist, resulting in power-law distributions in available areas for non-dominant species. These points maximize the biomass–diversity relationship. Our results suggest that spatial dependencies and the disturbance heterogeneity hypothesis are the cornerstone processes accounting for unimodality in productivity–diversity relationships. en
dc.format.extent 12 en
dc.language.iso eng
dc.relation.ispartof Journal of Theoretical Biology en
dc.title Biomass-diversity responses and spatial dependencies in disturbed tallgrass prairies en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1006/jtbi.2001.2520
dc.contributor.institution Aberystwyth University en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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