Galapagos in Danger: Climate Change and Invasive Species Threaten Unique Wildlife
The Galapagos Islands, one of the world’s most unique ecosystems, are facing growing threats as climate change and invasive species put increasing pressure on their fragile biodiversity.
The collapse of Darwin’s Arch in 2021, though caused by natural erosion, highlighted the vulnerability of the archipelago. Scientists warn that rising ocean temperatures are now posing a far greater and more persistent risk to the region’s wildlife.
Warming waters are disrupting marine ecosystems by reducing the availability of nutrients and food sources. Species such as the marine iguana are struggling to find the algae they depend on, while sea turtle populations face challenges in nesting due to higher temperatures. As ocean conditions change, raising young becomes increasingly difficult for many species.
Although the islands are renowned for their biodiversity, experts note that populations are relatively small, making them particularly vulnerable to environmental changes. Naturalist guide Natasha Cabezas emphasized that while the islands host a wide range of species, their limited numbers increase the risk of decline.
The Galapagos sit at the convergence of several major ocean currents and are highly sensitive to fluctuations such as El Niño. These periodic warming events can reduce food availability, leading to population drops in species like marine iguanas and sea turtles. Scientists observed significant declines during recent El Niño periods, with some species still struggling to recover.
According to Jorge Carrión of the Galapagos Conservancy, marine iguanas were among the most affected species during the last El Niño event and are only now beginning to recover.
On land, invasive species present an additional threat. Non-native animals such as pigs, cats, and dogs are damaging ecosystems and endangering native wildlife, including the iconic Galapagos giant tortoise. These invasive animals can destroy nesting areas and disrupt conservation efforts.
Environmental pressures are further compounded by pollution. Studies have found microplastics present in the food chain, including in species like Galapagos penguin, raising concerns about long-term ecosystem health.
Scientists warn that the combined impact of warming oceans, invasive species, and pollution could have serious consequences for one of the world’s most biologically unique regions.