This species merits ranking as Critically Endangered based on the small number of documented locations (2) both of which comprise a small number of individuals (less than 25 in each), low area ofoccupancy (8 km²), the 50% reduction in population size inferred from loss of the North Carolina population as a result of sea-level rise by 2100, and the documented declines in habitat quality historically, at present, and projected into the future. The species also ranks as Critically Endangered based on the small population (less than 50 mature individuals) the small number of individuals in each subpopulation (two subpopulations each with less 25 individuals). Further the species also ranks as Critically Endangered based on the overall small size of the population which is estimated to be less than50 mature individuals.
Assessor/s: Lendemer, J. & Allen, J.; Reviewer/s: Scheidegger, C.; Contributor/s: Weerakoon, G.
Brown D. G., K. M. Johnson, T. R. Loveland & D. M. Theobald (2005) Rural Land-Use Trends in the Conterminous United States, 1950-2000. Ecological Applications15: 1851–1863.
Hall, S. P. & M. P. Schafale (1999) Conservation Assessment of the southeast Coastal Plain of NorthCarolina, using site-oriented and landscape-oriented analyses. Raleigh: 261.
IUCN (2018) The IUCN Red List of Threatened Species. Version 2018-2. Available at: www.iucnredlist.org. (Accessed: 15 November 2018).
Lendemer, J.C. and J. Allen. (2014) Lichen Biodiversity under threat from Sea-Level Rise in the Atlantic Coastal Plain. BioScience64: 923-931.
Lendemer, J.C. and R.C. (2014) Seven new species of Graphidaceae (Lichenized Ascomycetes) from the Coastal Plain of southeastern North America. Phytotaxa 1891(1):7-38.
Loveland T. R. & W. Acevedo (2000) Land Cover Change in the Eastern United States. United States Geological Survey, Land Cover Trends Project. United States Geological Survey.
Napton, D. E., R. F. Auch, R. Headley & J. L. Taylor (2010). Land changes and their driving forces in the Southeastern United States. Regional Environmental Change10: 37–53.
Ricketts, T.H., E. Dinerstein, D.M. Olson & C.J. Loucks (1999) Terrestrial ecoregions of North America: aconservation assessment. Island Press, Washington, D.C.
Sallenger A.H. Jr., K.S. Doran & P.A. Howd (2012) Hotspot of accelerated sea-level rise on the AtlanticCoast of North America. Nature Climate Change 2: 884–888.
Terando, A.J., J.K. Costanza, C. Belyea, R.R. Dunn, A.J. McKerrow & J. Collazo (2014) The southern megalopolis: using the past to predict the future of urban sprawl in the Southeast U.S. PLOS ONE9(7):e102261.
Find out more about the IUCN Red List Categories and Criteriahere.