Individual study: Attempts to establish a new population of the threatened plant Impatiens gordonii on Silhouette island, Seychelles
Gerlach J. (2011) Attempts to establish a new population of the threatened plant Impatiens gordonii on Silhouette island, Seychelles. Conservation Evidence, 8, 87-92
The endemic plant Impatiens gordonii (Balsaminaceae) is one of the most threatened plants in the Seychelles; it is known from a small number of localities on the islands of Mah© and Silhouette. There have been a number of attempts to establish a new population on Silhouette. Between 2001 and 2005, five seedlings and 54 rooting stems were planted at several points in one main field site. Although 11 plantings survived for over three months, all but one died within 2 years. That single plant has now survived for 10 years and has produced two seedlings. Problems with establishment were identified as being vulnerable to desiccation and rot, requiring high light levels but not full exposure to sunlight, and vulnerability to invertebrate herbivory (snails, caterpillars and crickets).