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The bubal hartebeest, also known as northern hartebeest or bubal antelope or simply bubal (Alcelaphus buselaphus buselaphus) is the extinct nominal (i.e., first described) subspecies of hartebeest. It was formerly found north of the Saharan Desert .
A large antelope with a particularly elongated forehead and oddly shaped horns, the hartebeest stands just over 1 m (3 ft 3 in) at the shoulder, and has a typical head-and-body length of 200 to 250 cm (79 to 98 in). The weight ranges from 100 to 200 kg (220 to 440 lb). The tail, 40 to 60 cm (16 to 24 in) long, ends in a black tuft. [40]
The bluebuck (Afrikaans: bloubok / ˈ b l aʊ b ɒ k /) or blue antelope (Hippotragus leucophaeus) is an extinct species of antelope that lived in South Africa until around 1800. It was smaller than the other two species in its genus Hippotragus , the roan antelope and sable antelope .
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This is much faster than the expected “background” extinction rate, or the rate at which species would naturally die off without outside influence — in the absence of human beings, these 73 ...
The subfamily Alcelaphinae (or tribe Alcelaphini), [1] [2] of the family Bovidae, contains the wildebeest, tsessebe, topi, hartebeest, blesbok and bontebok, and several other related species.
A 2020 long-term study of more than 60 bee species published in the journal Science found that climate change causes drastic declines in the population and diversity of bumblebees across the two continents studied, independent of land use change and at rates "consistent with a mass extinction."
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.