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The eastern black rhinoceros is a critically endangered species, with only about 740 remaining in the wild. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290 ...
It was the first of its kind in Africa with an ambitious objective to protect and breed rhinos, given rhino poaching was increasing at a rate that would surely wipe out the species in Kenya. Black rhino populations in Kenya dropped from around 18,000 in the late 1960’s to less than 1,500 by 1980 and about 400 in 1990.
Type III or concave curves have the greatest mortality (lowest age-specific survival) early in life, with relatively low rates of death (high probability of survival) for those surviving this bottleneck. This type of curve is characteristic of species that produce a large number of offspring (known as r-selected species).
The species was first named Rhinoceros bicornis by Carl Linnaeus in the 10th edition of his Systema naturae in 1758. The name means "double-horned rhinoceros". There is some confusion about what exactly Linnaeus conceived under this name as this species was probably based upon the skull of a single-horned Indian rhinoceros (Rhinoceros unicornis), with a second horn artificially added by the ...
Due to the efforts of conservation groups like the International Black Rhino Foundation, the population has stabilized, illegal poaching has been reduced, and the population has even been growing. The population of South-central Black Rhinoceros was around 1,650 in 2001. Nine years later, there are about 4,000 black rhinos in the wild.
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The bones above the nasal region are long and the nasal incision goes far into the skull. This indicates that Paraceratherium had a prehensile upper lip similar to that of the black rhinoceros and the Indian rhinoceros, or a short proboscis (trunk) as in tapirs. [4] A distinguishing feature was that the nasal incision was retracted to the P2-P3 ...
The 90% decline in their population is a hazard as mortality rates increase, as is consistent emigration (Primack, 2002). The reason why the rhino increases its densities and their birth rate decreases is because of the continuous threat of poaching and emigration.