Why are koalas and giant pandas vulnerable to changes in their habitats?

Koalas and giant pandas are particularly vulnerable to habitat changes because they are specialist species. Unlike generalist species that can adapt to various food sources and environments, specialists rely on narrow habitat requirements and often depend on one or a few specific food sources.12

Why They Are Vulnerable

• Dietary Specialization: Giant pandas rely on bamboo for 90–98 percent of their diet. Similarly, koalas feed very selectively on the leaves of specific eucalyptus trees. If these specific food sources are reduced by habitat loss or environmental shifts, these animals cannot easily subsist on other species.345
• Habitat Fragmentation: Human activities, such as agriculture, logging, and infrastructure development, have subdivided their habitats into disconnected areas. This fragmentation isolates populations, making it difficult for individuals to find mates and reducing gene flow.31
• Environmental Sensitivity: Both species face significant threats from climate change, which can alter their food availability and increase the frequency of drought and bushfires, further shrinking their already limited, specialized habitats.35