Arctic Warming Amplifies Invasive Species Threat

Recent study estimates 2,554 vascular plant species could find suitable climatic niches in a warming Arctic.
Arctic inventory recorded 341 alien taxa, of which 188 have naturalised.
Documented invasive species in Svalbard include common meadow rue.
Six major potential invasion hotspots identified:
Western Alaska
Southwestern & southeastern Greenland
Northern Iceland
Fennoscandia
Kanin–Pechora region
Main pathways of introduction: escape from confinement, transport‑stowaway, seed contamination, vehicle transport.
Ecological implications: displacement of native tundra flora (mosses, lichens, bearberry) and fauna (snowy owl, Arctic fox, grizzly bear, seals, walruses, belugas).
In India, invasive plants such as Lantana camara, Chromolaena odorata, Prosopis juliflora have invaded ≈266,954 sq km of natural habitats.
High‑risk Indian regions: Shivalik‑Terai belt, Duar (NE), Aravallis, Dandakaranya, Nilgiris; vulnerable ecosystems include dry grasslands, shola grasslands, and Ganga‑Brahmaputra plains.

Arctic amplification: warming rates in the Arctic are about twice the global average, leading to longer growing seasons and permafrost melt.
Increased human activity (shipping, tourism, resource extraction) reduces the natural climatic barriers that previously limited species survival.
Invasive species are among the top drivers of global biodiversity loss, altering ecosystem structure and function.

The Arctic case illustrates global pathways of biological invasions; species introduced in the Arctic can later spread via trade or climate corridors to other regions, including India.
Highlights the urgency of strengthening bio‑security measures, early detection, and rapid response mechanisms under the Biological Diversity Act, 2002 and the National Action Plan on Climate Change (NAPCC).
Serves as a reference for integrated climate‑biodiversity policy and the importance of international cooperation (e.g., Arctic Council, Convention on Biological Diversity).

Article 48A of the Constitution – the State shall protect and improve the environment and safeguard forests and wildlife.
Biological Diversity Act, 2002 – regulates the introduction of alien species, establishes the National Biodiversity Authority, and mandates management plans for invasive species.
Environment (Protection) Act, 1986 – empowers the central government to take measures for environmental protection, including control of invasive species.