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- Sumatran rhinoceros on the brink of extinction | Science
The Sumatran rhinoceros (Dicerorhinus sumatrensis), the closest living relative to the extinct woolly rhino, has been on decline for about a million years (1), but it is now at risk of imminent extinction According to the International Union for Conservation of Nature Red List, the Sumatran rhino is Critically Endangered (2) In just 20 years, the species population has decreased from 250 to
- How the Whitetail Nearly Went Extinct - MeatEater
The U S Biological Survey estimated that the whitetail deer population in America plummeted to around 300,000 individuals by 1890—a cataclysmic 99% decline from estimated highs of 30 million just a few hundred years earlier If we assume these deer were evenly spread across the whitetail’s historic range in the Lower 48, the estimated deer
- Shocking Sumatran rhino decline | Save the Rhino
We have also explored the potential of new technologies and the role of integrating the management of wild and captive individuals ” The Sumatran rhino is the smallest and last form of the two-horned rhino in Asia that has lived on the planet for 20 million years It is one of the world’s rarest rhino species
- Back from the Brink: The Surprising Survival of Indias Rhinos
India’s Rhino population was barely 75 in 1905 It has now increased by 35-times In 107 years it has declined since, largely because of better policing and protection by the Assam
- Global extent and drivers of mammal population declines in . . .
Large bodied species are likely highly susceptible to decline because they have slow growth rates and so overharvesting is likely to cause population decline [15, 59] This is because low population growth rates in combination with illegal hunting are known to cause significant reduction in population persistence [ 60 , 61 ]
- Polio: a 20th century epidemic - Science Museum
Like many other infectious diseases, polio spreads from person-to-person through the ingestion of faecal matter, often in food and water But while improvements in sanitation such as clean water and sewage systems led to the decline of diseases such as typhoid and cholera at the end of the 1800s, outbreaks of polio began to increase
- Death of a rhino: can a photograph inspire action?
Black rhino numbers have risen to a current population of between 5,042 and 5,458 individuals Importantly, their geographic range has also increased, with successful reintroduction programmes repopulating areas that had previously seen their native black rhinos poached to local extinction in the 1970s and 80s
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