Fact brief - Is global warming promoting biodiversity?
Posted on 1 February 2025 by Guest Author
Skeptical Science is partnering with Gigafact to produce fact briefs — bite-sized fact checks of trending claims. This fact brief was written by Sue Bin Park from the Gigafact team in collaboration with members from our team. You can submit claims you think need checking via the tipline.
Is global warming promoting biodiversity?
Biodiversity is declining, and global warming is a contributing factor.
Some species can adapt to environmental change, but many cannot evolve quickly enough, or at all. As habitats degrade and migration paths are blocked, many species have already disappeared, while more face extinction.
Adaptation often requires migration to better conditions, but human-made barriers like cities and dams block these paths. Climate change also disrupts migration cues, such as air or water temperature. Many species cannot migrate fast enough, like immobile coral reefs, or survive without specific habitats, like the now-extinct golden toad, confined to high-altitude Costa Rican forests made uninhabitable by human-induced climate changes.
Since 1970, mammal, bird, fish, reptile, and amphibian populations have declined by an average of 68%. Scientists estimate current extinction rates are hundreds to thousands of times higher than natural.
Climate change, habitat destruction, pollution, and overexploitation are all driving biodiversity loss, threatening ecosystems’ balance worldwide.
Go to full rebuttal on Skeptical Science or to the fact brief on Gigafact
This fact brief is responsive to conversations such as this one.
Sources
WWF A warning sign: where biodiversity loss is happening around the world
AKSIK Fragility of Coral Reefs in Hawaii
ifaw Golden toads
Nature Food web rewiring in a changing world
CMS Major New UN Report Finds Climate Change is Severely Impacting Migratory Species of Wild Animals
WWF What is the sixth mass extinction and what can we do about it?
NOAA Climate Change: Atmospheric Carbon Dioxide
About fact briefs published on Gigafact
Fact briefs are short, credibly sourced summaries that offer “yes/no” answers in response to claims found online. They rely on publicly available, often primary source data and documents. Fact briefs are created by contributors to Gigafact — a nonprofit project looking to expand participation in fact-checking and protect the democratic process. See all of our published fact briefs here.
Comments