Biodiversity Crisis in Île-de-France: How Climate Change is Reshaping Nature

In the Île-de-France region, biodiversity is severely impacted by climate change and other human activities. This is evidenced by a report released on April 8 by the Regional Biodiversity Agency (ARB). The report indicates that the region’s plant and animal communities are undergoing reorganization due to global warming. The ARB notes, “Biodiversity is not only disappearing; it’s redistributing,” which weakens ecological balances and species interactions.

Specifically, species that thrive in cooler conditions, such as the bronze dragonfly, are experiencing significant declines. Conversely, species that favor warmer temperatures are on the rise: the praying mantis is now “well-established” in Île-de-France, along with several orchid species.

Aquatic environments are also suffering: “The increase in water temperatures, combined with reductions in summer water flow by up to 30%, is jeopardizing the reproduction of sensitive species and destabilizing wetlands.”

As for agricultural areas, which cover nearly half of the region, they are “the primary victims of expanding urbanization” and “at the forefront of environments affected by climate change.” The biodiversity they support is sharply declining, with droughts and late frosts weakening yields, and crops becoming less resistant to pests and pathogens.

Urban areas, on the other hand, locally intensify warming, which increases stress on wildlife and plant life. In contrast, forested areas still serve as refuges due to more stable conditions, although this role may diminish over time.

Highlighting the inseparable link between climate and biodiversity, the ARB advocates for “nature-based solutions”: “Functional wetlands, diversified forests, urban wastelands, permeable soils, and green walls: these elements simultaneously help cool the local climate, manage water, store carbon, and maintain favorable habitats.”