NASA is Helping Endangered Animals & Their Habitats From Space

NASA is Helping Endangered Animals & Their Habitats From Space

Jaguars and Their Habitat

In the last century, the jaguar range declined by 50%, according to the International Union for Conservation of Nature (IUCN). Jaguars once roamed from the U.S. Southwest to Argentina. Like tigers, jaguars fight against poaching and loss of food sources. The IUCN classifies wild jaguars as near-threatened, with a population between 64,000 and 173,000.

Gran Chaco is South America’s second-largest woodland. In addition, it is home to jaguars and other animals but is considered an especially threatened ecosystem. The forest stretches from northern Argentina into Bolivia, Paraguay, and Brazil but experiences severe deforestation.

NASA mapped priority areas for jaguars. They did this using land use and infrastructure data, plus Earth observations from MODIS and Landsat. They found that about 36% of the priority areas in Gran Chaco are “low-protection” zones. These are areas where deforestation is allowed.

Sebastian Martinuzzi of the University of Wisconsin–Madison is the lead author. He said, “Managers and conservationists could use the new spatial information to see where current forest zoning is protecting key animals, and where it may need re-evaluation.”

Safe Havens for Elephants

African savanna elephants occupy about 15% of their historical range, but their numbers are declining. A study surveyed about 90% of the elephants’ range. It’s estimated that their numbers dropped by 144,000 elephants from 2007 to 2014. This left approximately 352,000 elephants, and the IUCN changed their status to endangered in 2021.

A recent study used NASA satellite data to study elephants in Kenya’s Maasai Mara National Reserve. Researchers also studied nearby semi-protected and unprotected zones. They discovered that elephants prefer dense canopy forests along streams, especially in unprotected areas. In addition, they found that elephants avoid open areas like grasslands, especially when there are more people around. Human development, like tourism lodges, is often built around this kind of forest.

The IUCN also classifies elephants as endangered. In Southern Bhutan, there are escalating conflicts between people and elephants. In 2020-2021, the NASA Capacity Building Program selected Bhutanese students studying in America for the DEVELOP program. They partnered with the Bhutan Foundation, Bhutan Tiger Center, and Bhutan Ecological Society. The teams modeled current habitat suitability and mapped wildlife pathways between habitats. They used NASA Earth observations, elephant occurrence data, and other information. It aided strategies that reduced the risk of conflict.

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