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13,000 years ago: Unknown; may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting) [4] [5] [6] Neogene: Pliocene–Pleistocene boundary extinction: 2 Ma: Possible causes include a supernova [7] [8] or the Eltanin impact [9] [10] Middle Miocene disruption: 14.5 Ma Climate change due to change of ocean ...
The following list is incomplete by necessity, since the majority of extinctions are thought to be undocumented, and for many others there isn't a definitive, widely accepted last, or most recent record. According to the species-area theory, the present rate of extinction may be up to 140,000 species per year. [1]
A 2013 study estimated that 608–851 bird species (6–9%) are highly vulnerable to climate change while being on the IUCN Red List of threatened species, and 1,715–4,039 (17–41%) bird species are not currently threatened but could become threatened due to climate change in the future.
Fossil evidence and rock art suggests that the species was more broadly spread around southern Africa in the Pleistocene and early Holocene, but its range contracted because of climate-driven vegetation change until it was reduced to just 4300 km 2 east of Cape Town. It finally disappeared around 1800 CE as a result of hunting, competition with ...
Pages in category "Extinct animals of Africa" The following 30 pages are in this category, out of 30 total. ... This page was last edited on 9 March 2023, at 13:01 (UTC).
Red list categories of the IUCN Demonstrator against biodiversity loss, at Extinction Rebellion (2018).. The current rate of global biodiversity loss is estimated to be 100 to 1000 times higher than the (naturally occurring) background extinction rate, faster than at any other time in human history, [25] [26] and is expected to grow in the upcoming years.
500 million years of climate change Ice core data for the past 400,000 years, with the present at right. Note length of glacial cycles averages ~100,000 years. Blue curve is temperature, green curve is CO 2, and red curve is windblown glacial dust (loess). Scale: Millions of years before present, earlier dates approximate.
The verbal descriptors have criteria based on absolute change in Green Score (magnitude of the conservation metric), change relative to the baseline present-day Green Score or any benefit that prevents extinction, in cases of species with high conservation needs. The metrics can have zero and negative values. [4]: 14–15