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Original Articles

Do ecological corridors increase the abundance of soil fauna?

ORCID Icon, ORCID Icon, ORCID Icon, ORCID Icon & ORCID Icon
Pages 45-57 | Received 30 May 2019, Accepted 31 Oct 2019, Published online: 04 Dec 2019
 

ABSTRACT

Ecological corridors are areas of natural vegetation that connect two or more separate habitat patches, surrounded by a non-habitat matrix. Soil fauna is important for sustainability, conservation and soil quality. Thus, in this study, we aimed to investigate the influence of corridors on the soil faunal community in crops near savannah vegetation areas by examining the effects on trophic, movement and taxonomic groups. We collected data during the dry and rainy seasons in two areas of biodynamic agriculture. Then, we calculated trophic, movement, taxonomic group abundance, total abundance, richness, equability and diversity. The taxa Acari, Chilopoda, Oligochaeta, Orthoptera and Psocoptera were the most abundant in cultivated areas with corridors during the rainy season, while the taxa Dermaptera, Diplura, Diptera, Collembola, Formicidae larva, Lepidoptera and Lepidoptera larva were more abundant in cultivated areas with corridors during the dry season. The trophic, movement, taxonomic group abundance, richness, equability and diversity were higher during the rainy season and were not related to corridor presence. Ecological corridors increased the abundance of some taxonomic groups of soil fauna in cultivated areas, thereby contributing to the maintenance of specific taxonomic groups, which provide important ecosystem services.

RÉSUMÉ

Les corridors écologiques sont des aires de végétation naturelle connectant des parcelles d’habitat entourées d’une matrice de non-habitat. La faune du sol est importante pour la durabilité, la conservation et la qualité du sol. Ainsi, nous avons étudié l’influence des corridors sur les communautés fauniques du sol dans des aires cultivées près de végétation de savane en examinant les effets sur les groupes trophiques, de mouvement et taxonomiques. Nous avons collecté les données durant les saisons sèche et pluvieuse dans deux zones d’agriculture biodynamique. Ensuite, nous avons calculé l’abondance des groupes trophiques, de mouvement et taxonomiques, l’abondance totale, la richesse, l’uniformité et la diversité. Les taxons Acari, Chilopoda, Oligochaeta, Orthoptera et Psocoptera étaient plus abondants dans les aires cultivées avec corridors pendant la saison pluvieuse, tandis que les taxons Dermaptera, Diplura, Diptera, Collembola, larves de Formicidae, Lepidoptera et larves de Lepidoptera étaient plus abondants dans les aires cultivées avec corridors durant la saison sèche. L’abondance, la richesse, l’uniformité et la diversité des groupes trophiques, de mouvement et taxonomiques étaient plus élevées durant la saison pluvieuse et n’étaient pas liées à la présence de corridors. Les corridors écologiques augmentent l’abondance de certains groupes taxonomiques de faune du sol dans les aires cultivées, contribuant ainsi à maintenir des groupes taxonomiques fournissant d’importants services écosystémiques.

Acknowledgments

This study is part of the first author’s master’s research (Programa de Pós-graduação em Ecologia e Recursos Naturais from Universidade Federal do Ceara). We thank the Núcleo Regional de Ofiologia (NUROF-UFC) for lending the microscopes for soil fauna screening.

Disclosure statement

No potential conflict of interest was reported by the authors.

Supplementary Material

Supplemental data for this article can be accessed here.

Additional information

Funding

The authors were financially supported by grants from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Grant Code 001 (MBP) and Conselho Nacional de Desenvolvimento Científico e Tecnologico – CNPq, process PQ CNPQ 311627/2015-3 (CFR). This study was also partly funded by the Fundação Cearense de Apoio ao Desenvolvimento Científico e Tecnológico and Amway do Brazil Ltd .

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