Scale-dependent relationships between tree species richness and ecosystem function in forests.

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dc.careerCiencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorValencia Reyes, Lius Renato
dc.contributor.correspondingValencia Reyes, Lius Renato
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:37:23Z
dc.date.available2023-11-04T21:37:23Z
dc.date.issued2013
dc.dedication.authorTCes
dc.description.abstractThe relationship between species richness and ecosystem function, as measured by productivity or biomass, is of long-standing theoretical and practical interest in ecology. This is especially true for forests, which represent a majority of global biomass, productivity and biodiversity. Here, we conduct an analysis of relationships between tree species richness, biomass and productivity in 25 forest plots of area 8–50 ha from across the world. The data were collected using standardized protocols, obviating the need to correct for methodological differences that plague many studies on this topic. We found that at very small spatial grains (0.04 ha) species richness was generally positively related to productivity and biomass within plots, with a doubling of species richness corresponding to an average 48% increase in productivity and 53% increase in biomass. At larger spatial grains (0.25 ha, 1 ha), results were mixed, with negative relationships becoming more common. The results were qualitatively similar but much weaker when we controlled for stem density: at the 0.04 ha spatial grain, a doubling of species richness corresponded to a 5% increase in productivity and 7% increase in biomass. Productivity and biomass were themselves almost always positively related at all spatial grains. Synthesis. This is the first cross-site study of the effect of tree species richness on forest biomass and productivity that systematically varies spatial grain within a controlled methodology. The scale-dependent results are consistent with theoretical models in which sampling effects and niche complementarity dominate at small scales, while environmental gradients drive patterns at large scales. Our study shows that the relationship of tree species richness with biomass and productivity changes qualitatively when moving from scales typical of forest surveys (0.04 ha) to slightly larger scales (0.25 and 1 ha). This needs to be recognized in forest conservation policy and management.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1706673199
dc.id.type1
dc.identifier.doi10.1111/1365-2745.12132
dc.identifier.issn13652745, 00220477
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5598
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12132/full
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsRyan A. Chisholm, R., Muller, H., Rahman, K., Bebber, D., Bohlman, S., Bourg, N., Brinks, J., et al.
dc.magazine.pageRange1214–1224
dc.magazine.titleJournal of Ecologyen_US
dc.magazine.volumeChapter101(5)
dc.rightsClosedAccessen
dc.statepublisheden_US
dc.subjectBiodiversityes
dc.subjectBiomasses
dc.subjectComplementarityes
dc.subjectDeterminants of plant community diversity and structurees
dc.subjectProductivityes
dc.subjectSampling effectses
dc.subjectSpecies diversityes
dc.subjectTreeses
dc.subjectBiodiversity
dc.subjectBiomass
dc.subjectComplementarity
dc.subjectDeterminants of plant community diversity and structure
dc.subjectProductivity
dc.subjectSampling effects
dc.subjectSpecies diversity
dc.subjectTrees
dc.titleScale-dependent relationships between tree species richness and ecosystem function in forests.en_US
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