Study Reveals Genetic Split Between North Carolina’s Mountain and Coastal Black Bears

Recent DNA research on black bears living in North Carolina’s mountain and coastal zones has identified pronounced disparities in genetic health and variability, suggesting that bears along the coast could face heightened susceptibility to environmental stresses.

Carried out by wildlife biologists and geneticists, the study collected samples from individuals in each habitat and examined genetic‑diversity markers. Bears residing in the Appalachian highlands exhibited a wide, robust set of genetic characteristics, whereas their Atlantic‑coast counterparts revealed diminished variability, a condition commonly associated with reduced adaptive potential.

Because genetic diversity acts as a shield against disease, habitat alteration and other challenges, the detected fragility in coastal bears may carry long‑term consequences for their persistence. Conservation experts point out that isolated or small groups often experience inbreeding, which can lower reproductive rates and raise vulnerability to illnesses.

These results emerge while North Carolina’s black bear population is broadly viewed as stable, though wildlife managers have voiced worries about habitat fragmentation from development and roadways. By highlighting genetic shortcomings, the research offers a scientific foundation for focused actions—like creating habitat corridors or facilitating managed gene flow—to strengthen the resilience of the coastal cohort.

State wildlife officials have said the findings will guide upcoming monitoring and recovery strategies. As bears keep moving through a landscape increasingly altered by humans, preserving genetic vigor will be crucial to keep both mountain and coastal populations viable for future generations.