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. 2022 Sep;103(9):e3745.
doi: 10.1002/ecy.3745. Epub 2022 Jun 27.

Multitrophic diversity and biotic associations influence subalpine forest ecosystem multifunctionality

Ya-Huang Luo  1   2   3 , Marc W Cadotte  4 , Jie Liu  1 , Kevin S Burgess  5 , Shao-Lin Tan  1 , Lin-Jiang Ye  1   6 , Jia-Yun Zou  1   6 , Zhong-Zheng Chen  7   8 , Xue-Long Jiang  7 , Juan Li  9 , Kun Xu  3 , De-Zhu Li  1   2 , Lian-Ming Gao  1   3
Affiliations

Multitrophic diversity and biotic associations influence subalpine forest ecosystem multifunctionality

Ya-Huang Luo et al. Ecology. 2022 Sep.

Abstract

Biodiversity across multiple trophic levels is required to maintain multiple ecosystem functions. Yet it remains unclear how multitrophic diversity and species interactions regulate ecosystem multifunctionality. Here, combining data from 9 different trophic groups (including trees, shrubs, herbs, leaf mites, small mammals, bacteria, pathogenic fungi, saprophytic fungi, and symbiotic fungi) and 13 ecosystem functions related to supporting, provisioning, and regulating services, we used a multitrophic perspective to evaluate the effects of elevation, diversity, and network complexity on scale-dependent subalpine forest multifunctionality. Our results demonstrated that elevation and soil pH significantly modified species composition and richness across multitrophic groups and influenced multiple functions simultaneously. We present evidence that species richness across multiple trophic groups had stronger effects on multifunctionality than species richness at any single trophic level. Moreover, biotic associations, indicating the complexity of trophic networks, were positively associated with multifunctionality. The relative effects of diversity on multifunctionality increased at the scale of the larger community compared to a scale accounting for neighboring interactions. Our results highlight the paramount importance of scale- and context-dependent multitrophic diversity and interactions for a better understanding of mountain ecosystem multifunctionality in a changing world.

Keywords: ecosystem multifunctionality; elevation; multitrophic diversity; networks; spatial scales; subalpine forest.

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References

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