Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Archipiélago de Revillagigedo' has mentioned 'Ecology' in the following places:
Occurrence Sentence Text Source
Contents 1 Geography 2 History 2.1 Sixteenth to nineteenth century 2.2 Twentieth century 2.3 Twenty-first century 3 Ecology 3.1 Threats and conservation 4 References 5 External links
Ecology[edit]
But the unique ecology of the islands has since then come under threat from introduced species.
The Comitxc3xa9 Cientxc3xadfico para la Conservacixc3xb3n y Restauracixc3xb3n del Archipixc3xa9lago Revillagigedo ("Scientific Committee for the Conservation and Restoration of the Revillagigedo Islands") was founded in 1996, and is a committee representing several organizations, including the Island Conservation & Ecology Group, Island Endemics Institute, the University of Missourixe2x80x93St.
The committee has been advocating removal of the exotic species from the islands, especially the estimated 2000 sheep on Socorro, to allow the islands' ecology to recover, and adoption of a management plan to promote the recovery of the islands' native species, including reintroduction of the Socorro dove.
Invasive introduced species represent the greatest threat to the ecology of these islands and their surrounding waters.