VASCULAR PLANTS STRANGE, THREATENED OR IN DANGER OF EXTINCTION OF THE OAXACA STATE, A PRELIMINARY PANORAMA

Salvador Acosta Castellanos.


Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional
Unidad Oaxaca
Instituto Politécnico Nacional
Apartado Postal 24, Administración 3
68101, Oaxaca, Oax.
México


.

Abstract

A list of 307 endangered vascular plants taxa, with known distribution, vegetation and altitudinal ranges inside Oaxaca State is presented.Orchidaceae followed by Cactaceae and Zamiaceae were the families with the greatest number of endangered taxa. Cloud forest was the vegetation type with most endangered taxa. Most of the taxa were classified in "threatened" category, although several taxa are "insufficiently known" and three probably extinct species are even recorded.

Sierra Norte and Istmo regions had a great amount of endangered taxa. But districts poorly collected were evident. So it is necessary to promote basic floristic studies in poorly known zones as in biologically important communities as cloud forest, oak forest and tropical deciduous forest.

Key words: endangered species, conservation, Oaxaca, Mexico.

extensive version
PDF (145 Kb)