Work

Immediate facilitation and engineering legacy of beavers: 54 years of patch dynamics in a boreal landscape

Year: 2025

Type: article

Abstract: Beavers are powerful ecosystem engineers that transform terrestrial areas into aquatic systems. Beaver-induced disturbances create a dynamic mosaic of wet and dry successional habitats across the landscape, yet the long-term impacts of beavers on biodiversity remain poorly understood. We used unique long-term data on beaver floods to study how the return of the beaver-induced patch disturbances affects habitat suitability and connectivity, which serve as proxies for biodiversity, in a boreal landscape over a 54-year period. We demonstrate landscape-level changes by analyzing three taxa that respond differently to flood and post-flood phases. The nearly tenfold increase in the overall suitability index highlights a significant improvement in the conditions supporting biodiversity. Increasing habitat connectivity between valuable patches reflects better dispersal for organisms. Beaver facilitation shapes ecosystems and resource availability over both short and long periods. Since different species may require immediate effects or lasting legacies, it is crucial that beavers remain continuously in the landscape for maintaining biodiversity.

Source: The Science of The Total Environment

DOI: 10.1016/j.scitotenv.2025.180341

Authors: Sonja Kivinen, Petri Nummi

Institutions: University of Eastern Finland, University of Helsinki

Language: English

Topic: Ecology and biodiversity studies

Subfield: Ecology

Field: Environmental Science

Domain: Physical Sciences

SDG: Life on land

Open Access status: hybrid

Estimated APC paid: $4,250