An endemic species is a taxonomic unit whose natural distribution is restricted to a defined geographic area, such as a specific island, mountain range, ecoregion, or political region, and does not occur naturally elsewhere. In biogeography and conservation biology, endemism is used to quantify spatial patterns of biodiversity, identify centers of diversification, and prioritize regions for protection. Endemic species often exhibit high levels of local adaptation and evolutionary distinctiveness but are also disproportionately vulnerable to habitat alteration, invasive species, climate change, and other anthropogenic pressures due to their limited range and frequently small, fragmented populations.
A tiny greenish, nocturnal frog that thrives in coffee plantations has been discovered in Costa Rica's central Pacific region, where it also faces risks from agrochemicals used in farming.
Ecology
Aug 8, 2026
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52
A new study reveals that human activities have fundamentally reshaped biodiversity patterns on islands across the globe, with important implications for how scientists understand ecology, evolution and conservation.
Evolution
Jul 23, 2026
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35
When you think of carnivorous marsupials, you probably picture the Tasmanian devil or perhaps a spotted-tailed quoll. But these famous predators are only the largest members of a remarkable family of marsupials called dasyurids.
Evolution
Jul 17, 2026
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Scientists have detected the highly contagious H5 bird flu in an Australian seabird for the first time, the government said Friday.
Veterinary medicine
Jul 10, 2026
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8
The British swallowtail butterfly (Papilio machaon britannicus) is the U.K.'s only native swallowtail and its largest native butterfly. It's instantly recognizable by its striking light yellow-and-black wings, with twin tail-like ...
A comprehensive study of more than 1,100 springs in the American West warns that critical biodiversity hot spots are facing a mounting extinction crisis.
Ecology
Jul 8, 2026
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10
Visitors to the Fernando de Noronha archipelago, located about 340 miles (545 kilometers) off the coast of Pernambuco in northeastern Brazil, soon notice a small lizard. Seemingly ubiquitous, it roams among rocks, trails ...
Plants & Animals
Jul 7, 2026
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12
Scientists are increasingly worried we may be witnessing the start of the "sixth mass extinction"—the first to be caused by human activities.
Paleontology & Fossils
Jul 7, 2026
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7
Wormlike parasites cause crickets to jump into streams, where the fatty insects nourish endangered fish. Ayano Medo and Takuya Sato sought to characterize the flow of eicosapentaenoic acid (EPA)—a nutritious long-chain omega-3 ...
Plants & Animals
Jul 7, 2026
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10
New research from Monash University has provided the first comprehensive assessment of the Pilbara barking gecko (Underwoodisaurus seorsus) and revealed the species is facing a heightened risk of extinction under a rapidly ...
Plants & Animals
Jul 6, 2026
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11
