The wapiti has also successfully adapted to countries outside of its natural range where it has been introduced, including Argentina and New Zealand; the animal's adaptability in these areas may, in fact, be so successful as to threaten the sensitive endemic ecosystems and species it encounters., DOC is working to protect New Zealand’s native species, ecosystems, outdoor recreation and heritage sites from climate change. CITES is a United Nations Convention that monitors and controls international travel of items containing protected animals and plants. It ensures that long-term survival of species is not threatened., This will have had cascading harmful effects on ecosystems so, in addition to bird extinctions, we will have lost a lot of plants and animals that depended on these species for survival.” Observations and fossils show 640 bird species have been driven extinct since the Late Pleistocene period – 90 per cent of these on islands inhabited by , Taxonomic revision of the humpback dolphins (Sousa spp.), and description of a new species from Australia. Marine Mammal Science 30:1494—1541. Jefferson, T. A. and J. Y. Wang. 2011. Revision of the taxonomy of finless porpoises (genus Neophocaena): The existence of two species. Journal of Marine Animals and Their Ecology 4:3—16., Earth’s biosphere functioning is highly dependent on trees, which are essential ecosystem engineers 1,2 and generate habitat to half the world’s known terrestrial flora and fauna 3,4 , .