top of page

ARTICLE TITLE:

REFERENCE TYPE:

AUTHOR(S):

EDITOR(S):

PUBLICATION DATE:

PUBLICATION TITLE:

VOLUME:

PAGES:

ABSTRACT:

Dry forests of the Galapagos: a comparative assessment of a World Heritage Site

Article

Gillespie, TW; Keppel, G; Robinson, CM; Rivas-Torres, G

NA

2020

PACIFIC CONSERVATION BIOLOGY

26

161-172

Despite worldwide knowledge of the importance of the Galapagos archipelago, there is little comparative plot data from the forests in the dry regions. We examined patterns of woody plant (>= 2.5cm diameter at breast height (DBH)) species richness and structure using Gentry's transect method (0.1ha) on the three largest islands in the Galapagos. We identified the conservation status of woody plants within the dry forest region, assessed forest cover and change in the region, and compared field results to other tropical dry forests in the Pacific. Of the 22 species encountered (11 native, 11 endemic), there were no non-native species and only one threatened species. Isabela, Santa Cruz and San Cristobal have similar overall levels of species, genera, family and liana richness per site, but significantly different tree species richness, density and tree height per transect. Geospatial databases identified 51 species (native 40%, endemic 60%) of woody plants (>= 2.5cm DBH) within the dry forest region of the Galapagos and 13 species (10 from the genus Scalesia) on the IUCN Red List. There is an estimated 551.97km(2) of dry forest in the Galapagos and there has been little change (<0.01%) in forest cover from 2000 to 2015. Dry forests of the Galapagos have similar levels of species richness to Hawaii and the Marquesas but contain lower densities, basal areas and tree heights than other dry forests in the Pacific. These dry forests appear to be the best preserved and protected tropical dry forest in the Pacific.

URL:

bottom of page