Effectiveness of Rewilding Strategies in Restoring Ecological Functionality in Northern Hemisphere Ecosystems

Abstract

Rewilding has become a revolutionary conservation approach aimed at restoring self-regulating ecosystems and improving ecological resilience across the Northern Hemisphere. This paper provides an appraisal of the efficacy of rewilding strategies, comprising trophic rewilding, passive land abandonment, species reintroductions, and process-based restoration across temperate, boreal, and arctic systems. The analysis uses the synthesis of case study results from North America and Europe to investigate the effects of reintroducing keystone species, supporting natural disturbance regimes, and decreasing intensive land management on ecological functionality. Findings show that trophic rewilding, especially the reintroduction of apex predators and large herbivores, enhances trophic complexity, nutrient turnover, and habitat heterogeneity. Passive rewilding on abandoned farmland is also conducive to biodiversity recovery, but the landscape context and the potential for colonisation strongly influence outcomes. The issues remain, including human-wildlife interactions, climate-driven changes in species distribution, and socio-political impediments to long-term implementation. However, it has been indicated that rewilding can restore greater ecological stability, increase carbon sequestration, and enhance adaptive capacity through inclusive governance and ongoing monitoring. The research paper agrees that rewilding is a plausible approach to reestablish ecological function in ecosystems across the Northern Hemisphere, though only if strategies are designed to fit local environmental conditions and are combined with community involvement and climate-adaptation planning.