Consistent patterns of common species across tropical tree communities

Cooper, DLM, Lewis, SL, Sullivan, MJP, Prado, PI, Ter Steege, H, Barbier, N, Slik, F, Sonké, B, Ewango, CEN, Adu-Bredu, S, Affum-Baffoe, K, de Aguiar, DPP, Ahuite Reategui, MA, Aiba, S-I, Albuquerque, BW, de Almeida Matos, FD, Alonso, A, Amani, CA, do Amaral, DD, do Amaral, IL et al (2024) Consistent patterns of common species across tropical tree communities. Nature. ISSN 0028-0836

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Abstract

Trees structure the Earth's most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations^1-6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth's 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories⁷, we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world's most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees.

Item Type:	Article
Uncontrolled Keywords:	General Science & Technology
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences S Agriculture > SD Forestry
Divisions:	Biological and Environmental Sciences (from Sep 19)
Publisher:	Nature Publishing Group
Date of acceptance:	1 November 2023
Date of first compliant Open Access:	19 January 2024
Date Deposited:	19 Jan 2024 13:24
Last Modified:	19 Jan 2024 13:30
DOI or ID number:	10.1038/s41586-023-06820-z
URI:	https://ljmu-9.eprints-hosting.org/id/eprint/22369

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