Each Contracting Party shall, as far as possible and as appropriate, and predominantly for the purpose of complementing in-situ measures: 

(a) Adopt measures for the ex-situ conservation of components of biological diversity, preferably in the country of origin of such components; 

(b) Establish and maintain facilities for ex-situ conservation of and research on plants, animals and micro- organisms, preferably in the country of origin of genetic resources; 

(c) Adopt measures for the recovery and rehabilitation of threatened species and for their reintroduction into their natural habitats under appropriate conditions; 

(d) Regulate and manage collection of biological resources from natural habitats for ex-situ conservation purposes so as not to threaten ecosystems and in-situ populations of species, except where special temporary ex-situ measures are required under subparagraph (c) above; and 

(e) Cooperate in providing financial and other support for ex-situ conservation outlined in subparagraphs (a) to (d) above and in the establishment and maintenance of ex- situ conservation facilities in developing countries.

* Adopted at the Earth Summit of Rio de Janeiro in 1992