Adaptations Of An Elephant
Behavioral Adaptations Of An Elephant
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Elephants are one of the most iconic animals in the world, and their adaptations have allowed them to survive for centuries. From their thick skin to their powerful trunks, elephants have evolved many unique characteristics that make them well-suited for life in a variety of environments.
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Okavango River, Mohembo West.
The Okavango River (formerly spelled Okovango or Okovanggo), also known as the Cubango River, is a river in southwest Africa. It is the fourth-longest river system in southern Africa, running southeastward for 1,600 km (1,000 mi). It begins at an elevation of 1,300 metres (4,300 ft) in the sandy highlands of Angola. Farther south, it forms part of the border between Angola and Namibia, and then flows into Botswana. The Okavango does not have an outlet to the sea. Instead, it discharges into the Okavango Delta or Okavango Alluvial Fan, in an endorheic basin in the Kalahari Desert.
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ZAMBEZI RIVER
The Zambezi (also spelled Zambeze and Zambesi) is the fourth-longest river in Africa, the longest east-flowing river in Africa and the largest flowing into the Indian Ocean from Africa.[citation needed] Its drainage basin covers 1,390,000 km2 (540,000 sq mi), slightly less than half of the Nile's. The 2,574-kilometre-long (1,599 mi) river rises in Zambia and flows through eastern Angola, along the north-eastern border of Namibia and the northern border of Botswana, then along the border between Zambia and Zimbabwe to Mozambique, where it crosses the country to empty into the Indian Ocean.
The Zambezi's most noted feature is Victoria Falls. Its other falls include the Chavuma Falls at the border between Zambia and Angola, and Ngonye Falls near Sioma in western Zambia.
The two main sources of hydroelectric power on the river are the Kariba Dam, which provides power to Zambia and Zimbabwe, and the Cahora Bassa Dam in Mozambique, which provides power to Mozambique and South Africa. Additionally, two smaller power stations are along the Zambezi River in Zambia, one at Victoria Falls and the other in Zengamina, near Kalene Hill in the Ikelenge District.
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Avelution: Birds in the Development of Darwin
Naturalist Charles Darwin was strongly influenced by avian examples while he was developing the Theory of Evolution by Natural Selection. Birds are vertebrates in Class Aves, so the coined term “avelution” in this exhibition captures the idea of this influence.
When Darwin (1809-1882) was young, few scientists had specialized fields — most were natural historians, studying a broad array of organisms. He was a talented naturalist with broad interests, and although not an ornithologist, he drew heavily on avian examples in the development of his theory. No one has had a greater impact on ornithology than Charles Darwin.
From his time on the Beagle voyage (1831-1836), Darwin identified and described 38 new bird species, the most noted of which, the “Darwin’s Finches,” are frequently cited as a prime example of evolution. He noticed striking parallels between the kind of variation between different, related species that occurs naturally, and the variation that humans can produce among animals (and plants) by selective breeding. Back in England, Darwin kept many pigeon breeds to study selective breeding – a line of scientific inquiry that continues today.
Darwin’s work also provides the foundation to explore ongoing research at Michigan State University involving birds — where researchers are studying diverse topics like disease, rehabilitation, habitat change, selective breeding practices, neuroscience, behavior and vocalizations.
The exhibition will showcase examples of birds from MSU Museum collections, including many species that Darwin encountered in Patagonia; the domestic pigeon and chicken breeds that he studied while he was investigating artificial selection, and a Michigan example of adaptive radiation among finches.
The Michigan State University Museum presents “‘Avelution’ Birds in the Development of Darwin’s Theory of Evolution” in conjunction with its annual family science progr
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