Conserving Ursids: Giant Panda
Posted at 10:13 am May 8, 2008 by Suzanne Hall
Of the eight living species of bears, the giant panda is the only one currently classified as endangered on the International Union for the Conservation of Nature’s (IUCN) Red List of Threatened Species. This assessment is based on the estimation that less than 2,500 mature pandas live in the wild today, and this population is fractured into small groups of no more than 250 individuals apiece. Clearly, the most significant conservation threat to the panda is human encroachment: this results in less available habitat overall and fragmentation of remaining habitat.
Habitat pressure from an ever-increasing human population is a common problem for many endangered species. In China, where the population is thought to have exceeded 1.32 billion last year and continues to grow at a reasonably slow rate of 0.6% per year (as of 2003), nearly 8 million people are added annually. Housing and feeding these people, and supporting the amazingly fast economic development of China, requires resources. The clearing of land for agricultural purposes represents a significant threat to the panda today.
Fortunately, the Chinese government began taking action to protect the panda in the latter half of the 1900s. A system of panda reserves was created to set aside habitat for the bear, whose populations had already contracted into the shrunken spaces allotted to them. Unfortunately, the subpopulations have been isolated from one another, separated by farms and restricted to high mountain areas.
Some corridors have been created recently that could allow for movement of bears between subpopulations, and efforts to replenish bamboo in low-lying areas of some reserves have begun. Steps such as these aim to mitigate the impact of past habitat fragmentation, but the current small groupings of bears and their relative isolation from one another remains a great challenge to the species. Not only does such fragmentation limit genetic exchange and reduce the potential for mating opportunities, but it makes the panda especially vulnerable to food shortages.
As you know, the panda subsists nearly exclusively on bamboo. Usually, this food source is an abundant, fast-growing plant that literally surrounds the bears in their habitat. However, the bamboo life cycle is such that at intervals the plant will experience a mass die-off, affecting nearly all plants of that species. When this occurs, pandas must switch to alternate bamboo species to fill their stomachs. Unfortunately, another side effect of habitat fragmentation is that switching to another species of bamboo may not be a viable option for some panda subpopulations. Chance plays a role in determining the abundance of various bamboos in a particular pocket of habitat, and if a panda was unlucky in that it lives in an area with a low diversity of bamboo species, it could be stranded without food. Without good corridors connecting pockets of habitat, the pandas within areas of mass die-off may starve.
According to the Red List, the most significant factor in conserving the panda today is habitat restoration. To this end, China has worked to increase forestation in and around reserves. Several programs banning logging and discouraging hillside farming in previously forested areas have been implemented. According to a 2006 report of the United Nations Food and Agricultural Organization, these progressive policies have resulted in gains in forested area in China. Continued progress with such efforts should ultimately benefit the panda, as well as other species that share its habitat.
How can you, as a concerned global citizen, contribute to efforts to improve the outlook for this endangered bear? Since the government of China is the largest agent in promoting positive changes for the giant panda, it may seem that an ordinary person might not be able to have an impact. However, it is possible to offer support to organizations that work with the Chinese government to encourage conservation efforts for the panda. The World Wildlife Fund has a long history of such partnerships with Chinese ministries responsible for maintaining the panda population and currently has several habitat-oriented conservation efforts in place. Additionally, supporting efforts to promote panda research within China, using Chinese scientists, can increase pressure on the Chinese government from within. The San Diego Zoo collaborates with the Chinese Academy of Sciences, promoting the work of Chinese researchers who are studying the ecology of wild pandas.
The bottom line: preservation of wild populations of pandas is primarily dependent upon the restoration of panda habitat in China. The Chinese government holds the cards in this effort. As a global citizen, you can make the greatest difference by finding a way to contribute to continuing and future efforts to increase forestation, set aside more reserves, and reduce habitat fragmentation. With improved efforts in these areas, we may soon see the giant panda removed from the endangered species list.
Suzanne Hall is a senior research technician with the San Diego Zoo’s Giant Panda Unit.
Listen to an iZoofari Chat with Suzanne about panda conservation…
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According to the International Union for the Conservation of Nature’s (IUCN) Red List of Threatened Species, the
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You’ve probably heard it before: Reduce, Re-Use, Recycle! These three words can guide each and every one of us to a lifestyle that will help the environment, reduce greenhouse gases, and help slow-down, and ultimately reverse, global climate change. Every year the average American produces about 7 tons of CO2 (the primary greenhouse gas responsible for global temperature change). Simple actions, such as driving less and in fuel-efficient vehicles, can greatly reduce this number. The take-home message is that we can all make a difference: By changing the way we live in our homes, we can help polar bears survive in their home. To learn more about what you can do to cut down on your CO2 emissions, join
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