Livingstone’s Flying Fox
Livingstone’s flying foxes are one of the most endangered bat species, with 400-1,300 remaining individuals, and may become extinct within 10 years.
Livingstone’s flying foxes are one of the most critically endangered bat species, with an estimated population size of 400-1,300 individuals.
True changes in the population size of the Livingstone’s flying fox are currently unknown, and data on habitat change over time is limited but is likely to be linked to changes in forest and underplanted forest habitat.
Repeated simultaneous surveys of all 23 known roosts during 1998-2006 typically recorded about 1,200 bats. Many of these roosts were located as a result of the implementation of a national monitoring program. Surveys have been conducted only sporadically since 2007, so it is unclear whether populations have changed recently. However, a survey conducted with sequential visits to all previously-known roosts in 2011 and 2012 estimated 1,300 bats across 22 roosts (Anjouan: 940 bats at 16 roosts, Mohéli: 360 bats at 6 roosts).
Rapid destruction of the forest habitats the Livingstone’s flying fox rely on indicates these bats may become extinct within 10 years. Best estimates, derived from the little available data on forest loss rates, suggest that habitat decline over the most recent three generation, or 24.3-year period, was 83%. Thus, the best estimate of loss of P. livingstonii habitat exceeds the threshold under the A2 criterion for Critically Endangered status (≥80% loss of population, as suspected by habitat change, over a three-generation period, where habitat loss is ongoing).
• Image | © Ben J Charles (CharlieJB), All Rights Reserved
• Sources | (Daniel, et al., 2016; Dewey & Long, 2007; Malik, 2013; Sewall, Young, Trewhella, Rodríguez-Clark, & Granek, 2016; Sewall, et al., 2007; Trewhella, et al., 2005)