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Hace 2 días · Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.
Hace 5 días · Extinction occurs when species are diminished because of environmental forces (habitat fragmentation, global change, natural disaster, overexploitation of species for human use) or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).
Hace 3 días · Biodiversity loss, the reduction in an area’s biodiversity (the number of genes, species, individual organisms, or ecosystems) expressed by species loss, population declines and reductions in the genetic diversity within a species, and the collapse of biological communities.
Hace 5 días · Endangered species, any species that is at risk of extinction because of a sudden rapid decrease in its population or a loss of its critical habitat. Previously, any species of plant or animal that was threatened with extinction could be called an endangered species.
Hace 1 día · Approximately 251.9 million years ago, the Permian–Triassic (P–T, P–Tr) extinction event (PTME; also known as the Late Permian extinction event, the Latest Permian extinction event, the End-Permian extinction event, and colloquially as the Great Dying) forms the boundary between the Permian and Triassic geologic periods, and ...
Hace 1 día · Apr. 30, 2024 — As the world faces the loss of a staggering number of species of animals and plants to endangerment and extinction, one scientist has an urgent ...
Hace 1 día · The Earth has experienced five mass extinction events in the past 450 million years. The most recent led to the end of the dinosaurs, which vanished from the fossil record a mere 66 million years ago. It’s no secret that changes in the climate can have an adverse effect on biodiversity, but until now it has been unclear what factors make a species more or less resilient to such changes.
