Ecosystem functions of ants and dung beetles in agriculture‐dominated Amazonian riparian forests

Author:

Ribeiro Vanessa Soares12ORCID,Schoereder José Henrique13ORCID,Sobrinho Tathiana Guerra4ORCID,Brando Paulo Monteiro25ORCID,Maracahipes‐Santos Leonardo2ORCID,Macedo Marcia Nunes26ORCID,Paolucci Lucas Navarro13ORCID

Affiliation:

1. Departamento de Biologia Geral Universidade Federal de Viçosa Viçosa Brazil

2. Instituto de Pesquisa Ambiental da Amazônia (IPAM) Canarana Brazil

3. Programa de Pós‐Graduação em Ecologia Universidade Federal de Viçosa Viçosa Brazil

4. Departamento de Ciências Agrárias e Biológicas Universidade Federal do Espírito Santo São Mateus Brazil

5. Yale School of the Environment Yale University New Haven Connecticut USA

6. Woodwell Climate Research Center Falmouth Massachusetts USA

Abstract

Abstract Land‐use changes and habitat fragmentation can alter biodiversity and associated ecosystem functions. We investigated whether cropland expansion in south‐east Amazonia decreases ecosystem functions performed by ants and dung beetles by altering their communities. We sampled both groups in two forest types, in south‐eastern Amazonia: undisturbed riparian forests and riparian forests surrounded by croplands. We sampled ants and dung beetles with epigaeic pitfall traps, and experimentally assessed seed removal and predation by ants, and faeces and seed removal by dung beetles. Although ant and dung beetle abundance and richness did not differ across riparian forests, species composition of both groups did. Ants found seeds faster in undisturbed riparian forests, but the proportion of seed removal did not differ between forests. The abundance of predatory ants and the predation of termites by ants did not differ between forests. Seed and dung removal by dung beetles did not differ across riparian forests. Despite the observed differences in dung beetle composition, we did not find the effects on ecosystem functions probably due a functional redundancy of species. The quality of ecosystem functions provided by ants is lower in riparian forests surrounded by croplands, while changes in dung beetle diversity did not impact their ecosystem functions, with potential effects on the natural recovery of these disturbed riparian forests.

Funder

Fundação de Amparo à Pesquisa do Estado de Minas Gerais

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Publisher

Wiley

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