The ecological domino effect: invasive species and ecosystem collapse

Biological invasions by Invasive Alien Species (IAS) constitute a severe global crisis, acting as a primary driver of biodiversity loss and ecosystem collapse. In India, the rapid spread of IAS such as Lantana camara, Prosopis juliflora and Chromolaena odorata currently threatens over two-thirds of the nation's natural areas. Driven by globalization, climate change and habitat degradation, these invasions initiate cascading failures that significantly compromise ecosystem resilience. Beyond ecological degradation, IAS impose a staggering socio-economic burden, costing the Indian economy an estimated $127.3 billion to $182.6 billion over the last six decades. They severely impact agricultural productivity, deplete pastoral forage and increase public health risks. However, managing these species presents a complex paradox; many marginalized rural communities have adapted to depend on certain invasive plants, such as Prosopis juliflora for fuelwood and Lantana sps. for crafts. Consequently, blanket eradication campaigns could inadvertently threaten local livelihoods and trigger social issues. To combat this multifaceted threat, researchers and policymakers advocate for a paradigm shift from reactive eradication to adaptive, community-integrated management. Ultimately, addressing the invasive species crisis demands a holistic approach that harmonizes strict biosecurity policies with climate adaptation strategies, ensuring both the protection of vulnerable biodiversity and the socio-economic stability of dependent communities