Data from: The influence of balanced and imbalanced resource supply on biodiversity-functioning relationship across ecosystems
Numerous studies show that increasing species richness leads to higher ecosystem productivity. This effect is often attributed to more efficient portioning of multiple resources in communities with higher numbers of competing species, indicating the role of resource supply and stoichiometry for biod...
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Zusammenfassung: | Numerous studies show that increasing species richness leads to higher
ecosystem productivity. This effect is often attributed to more efficient
portioning of multiple resources in communities with higher numbers of
competing species, indicating the role of resource supply and
stoichiometry for biodiversity–ecosystem functioning relationships. Here,
we merged theory on ecological stoichiometry with a framework of
biodiversity–ecosystem functioning to understand how resource use
transfers into primary production. We applied a structural equation model
to define patterns of diversity–productivity relationships with respect to
available resources. Meta-analysis was used to summarize the findings
across ecosystem types ranging from aquatic ecosystems to grasslands and
forests. As hypothesized, resource supply increased realized productivity
and richness, but we found significant differences between ecosystems and
study types. Increased richness was associated with increased
productivity, although this effect was not seen in experiments. More even
communities had lower productivity, indicating that biomass production is
often maintained by a few dominant species, and reduced dominance
generally reduced ecosystem productivity. This synthesis, which integrates
observational and experimental studies in a variety of ecosystems and
geographical regions, exposes common patterns and differences in
biodiversity–functioning relationships, and increases the mechanistic
understanding of changes in ecosystems productivity. |
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DOI: | 10.5061/dryad.h50d9 |