Effects of habitat loss and limitation on effective population size and inbreeding rates of Walia ibex (Capra walie) in Ethiopia

Habitat loss and fragmentation significantly increase inbreeding rates and reduce genetic diversity in the critically endangered Walia ibex (Capra walie) population within Ethiopia's Simien Mountains National Park. The study found that inbreeding rates (ΔF) per fragmented habitat ranged from 0.3% to 7.7%, with the highest losses observed in Buait ras and Adarmaz, while mean heterozygosity loss across the total population reached 23.5%. These genetic declines correlate negatively with effective population size (Ne), underscoring how habitat limitation exacerbates inbreeding and erodes genetic variability. Researchers analyzed data from direct censuses and historical records to estimate Ne, ΔF, and heterozygosity losses, revealing critical insights for conservation strategies targeting this vulnerable species.

Alemayehu, K., Dessie, T., & Mekasha, Y. (2011). Effects of habitat loss and limitation on effective population size and inbreeding rates of Walia ibex (Capra walie) in Ethiopia. African Journal of Ecology, 50(2), 125–130. Portico. https://doi.org/10.1111/j.1365-2028.2011.01297.x