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22 de may. de 2022 · Species Extinction Rate Hundreds of Times Higher Than in Past 10 Million Years, Warns Secretary-General Observance Message, Urging Action to End Biodiversity Loss by 2030 To achieve a sustainable future for all, we need to act urgently to protect biodiversity, the web of life that connects and supports us all.
This cohort accumulated 98,334 species-years—meaning that an average species has been known for 80 years. The extinction rate is (13/98,334) × 10 6 = 132 E/MSY. The more difficult question asks how we can compare such estimates to those in the absence of human actions—i.e., the background rate of extinction.
19 de jun. de 2015 · The loss of biodiversity is one of the most critical current environmental problems, threatening valuable ecosystem services and human well-being (1–7).A growing body of evidence indicates that current species extinction rates are higher than the pre-human background rate (8–15), with hundreds of anthropogenic vertebrate extinctions documented in prehistoric and historic times (16–23).
19 de oct. de 2023 · extinction. noun. process of complete disappearance of a species from Earth. fossil. noun. remnant, impression, or trace of an ancient organism. Jurassic. adjective. having to do with the time period between 190 million and 140 million years ago, characterized by an abundance of dinosaurs and ammonites.
6 de nov. de 2023 · Regarding single species, risk is a premeditative concept that enables us to respond to near-extinction, such as when a species extinction is predicted to happen in the light of best ecological modelling, where the predicted quantity of extinctions has often been referred to as ‘extinction debt’ (Hanski and Ovaskainen, Reference Hanski and Ovaskainen 2002; Kuussaari et al., Reference ...
12 de jun. de 2020 · The extinction of a species represents an irreversible loss, a measurable reduction in the diversity of life on Earth, and is the ultimate concern for conservation. Although changes in species abundance or to ecological communities may be of equivalent concern ( 10 ), they are in principle, at least, reversible and recoverable.
