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Pollution and Biological Invasions: Two Synergistic Ecological Disruptors!
Summary
Researchers reviewed how chemical pollutants—including microplastics, heavy metals, and pesticides—synergize with biological invasions by weakening native species and altering habitats in ways that favor invasive species, while invasives in turn modify pollutant cycling, creating feedback loops that accelerate ecological degradation beyond what either stressor causes alone.
Pollution and biological invasions are two driving forces of ecological disruption to occur though their combined effects are yet to be explored. This review emphasizes how the diverse pollutants viz. heavy metals, pesticides, pharmaceuticals, nutrient enrichment, microplastics, and anthropogenic noise interact with invasion dynamics to remodel ecosystems (Bian et al. 2026; Sousa et al. 2025; Kayode-Afolayan et al. 2022; Cole et al. 2011; Browne et al. 2008). Pollutants eradicate or weaken native species, reduce ecological resilience, and alters habitat in such a way which invasive species can only exploit due to their high phenotypic plasticity and adaptibility (Elliott 2003; Piola and Johnston 2008). Besides, invasive species alters pollutant cycling and various crucial ecological processes, generating control loops that aggravates the habitat deterioration (Camacho-Cervantes and Wong 2023; Alvarez-Aguilar et al. 2022). Many experimental evidences across terrestrial and aquatic systems illustrate how chemical contamination facilitates invasive dominance, eutrophication accelerates algal and macrophyte proliferation, and physical pollutants restructure communities (Crooks et al. 2011). These synergistic and cumulative effects destabilize food webs, reduce biodiversity, and disrupt biogeochemical cycles (Ruhi et al. 2019; Johnston et al. 2017; Ehrenfeld 2010). Traditional management practices which treat pollution and invasion as separate ecological degradative processes, fails to recognize other unintended consequences thus highlighting the need for integrated approaches that addresses both the disruptors simultaneously. So by framing pollution and invasion as two interlinked phenomena, this review advances a holistic approach on conservation of biodiversity and ecological presumption in this ongoing era.