Post-Disturbance Ecological Reassembly: Faunal Communities in a Rehabilitated Nickel Concession

Abstract

Abstract Monitoring faunal diversity and functional guild composition provides critical insights into biodiversity recovery within restored habitats. Such analyses not only reveal which species are recolonizing but also indicate the habitat’s capacity to sustain complex and resilient communities. Building on this framework, the present study examines the development of wildlife diversity and community assembly across trophic guilds in restored ecosystems, offering a basis for evaluating restoration success and long-term ecological function. The study was conducted for 28 days, from April 26, 2024, to May 18, 2024, at the Nickel Mining Concession of PT. Vale. A total of 13 observation points were placed at the research location. Observations focused on groups of birds and mammals using the count point method, which combined direct and indirect observations of animals in the field. Species and feeding guild identification were conducted for all recorded taxa, followed by quantification of their abundance and population density. A total of 42 bird species were distributed among seven feeding guilds, whereas seven mammal species were partitioned into three guilds. The bird group was dominated by the insectivorous, while the mammal group was dominated by the omnivorous. These findings provide a comprehensive understanding of fauna composition in restored habitats, which is crucial for future restoration efforts.

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