Co-limitation towards lower latitudes shapes global forest diversity gradients.

Liang, Jingjing; Gamarra, Javier G P; Picard, Nicolas; Zhou, Mo; Pijanowski, Bryan; Jacobs, Douglass F; Reich, Peter B; Crowther, Thomas W; Nabuurs, Gert-Jan; de-Miguel, Sergio; Fang, Jingyun; Woodall, Christopher W; Svenning, Jens-Christian; Jucker, Tommaso; Bastin, Jean-Francois; Wiser, Susan K; Slik, Ferry; Hérault, Bruno; Alberti, Giorgio; Keppel, Gunnar; ... (2022). Co-limitation towards lower latitudes shapes global forest diversity gradients. Nature ecology & evolution, 6(10), pp. 1423-1437. Nature Publishing Group 10.1038/s41559-022-01831-x

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The latitudinal diversity gradient (LDG) is one of the most recognized global patterns of species richness exhibited across a wide range of taxa. Numerous hypotheses have been proposed in the past two centuries to explain LDG, but rigorous tests of the drivers of LDGs have been limited by a lack of high-quality global species richness data. Here we produce a high-resolution (0.025° × 0.025°) map of local tree species richness using a global forest inventory database with individual tree information and local biophysical characteristics from ~1.3 million sample plots. We then quantify drivers of local tree species richness patterns across latitudes. Generally, annual mean temperature was a dominant predictor of tree species richness, which is most consistent with the metabolic theory of biodiversity (MTB). However, MTB underestimated LDG in the tropics, where high species richness was also moderated by topographic, soil and anthropogenic factors operating at local scales. Given that local landscape variables operate synergistically with bioclimatic factors in shaping the global LDG pattern, we suggest that MTB be extended to account for co-limitation by subordinate drivers.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Fischer, Markus

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

2397-334X

Publisher:

Nature Publishing Group

Language:

English

Submitter:

Pubmed Import

Date Deposited:

10 Aug 2022 11:01

Last Modified:

02 Oct 2022 00:16

Publisher DOI:

10.1038/s41559-022-01831-x

PubMed ID:

35941205

URI:

https://boris.unibe.ch/id/eprint/171852

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