Wildlife in Africa got an extra level of protection Thursday (March 15) with the official creation of the world's largest international conservation area spanning the borders of Botswana, Angola, Namibia, Zambia and Zimbabwe.
The new Kavango Zambezi Transfrontier Conservation Area (KAZA) spans 109 million acres, almost three-quarters the size of Texas. The protected area combines 36 individual nature preserves and the land around them.
KAZA is home to 44 percent of Africa's elephants, according to the World Wildlife Fund (WWF). Six hundred plant species and 3,000 species of birds also live in the preservation zone, which contains famous Victoria Falls, one of the largest waterfalls on Earth. The preservation area includes the Okavango Delta in Botswana, a wetlands that provides refuge and water to crocodiles, lions, leopards, hyenas, rhinoceroses, baboons and more, including the endangered African wild dog. [See images from the protected area]
Many of these animals are vulnerable to human encroachment, especially poaching. In 2010, for example, 333 rhinos were killed in South Africa, largely to meet demand for their horns, which are used in traditional Asian medicine.
The cross-border KAZA cooperation is years in the making. In August 2011, the governments of the five nations involved signed a "memorandum of understanding" and committed themselves to developing the area. Thursday's (March 15) treaty-signing ceremony makes the deal official.
The conservation of KAZA still faces challenges, from a growing human population (the WWF estimates that 1.5 million people depend on the resources found in the area) to the area's vastness, which makes management more difficult. But conservationists hope that the linked park systems will reopen migration routes for animals and promote cross-border cooperation in protecting wildlife.
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Stephanie Pappas is a contributing writer for Live Science, covering topics ranging from geoscience to archaeology to the human brain and behavior. She was previously a senior writer for Live Science but is now a freelancer based in Denver, Colorado, and regularly contributes to Scientific American and The Monitor, the monthly magazine of the American Psychological Association. Stephanie received a bachelor's degree in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz.