DFC PRocEEDtr lcs - ALSFIABETICAL usTli{c oF ABSTTACTS

Authors: Cowrngnes-Bar-ogRAs, S.’, LozAI.Io-VIuI{o, M. oE L. 1sce**,“or.{qsuNd{r.N.L,M6aco,Mlv-L$otrtcro

Year: 1995 (xxvii)

Abstract

Elploration of the arid S\4/ Nuevo h6n, M6xico has revealed the extinction of a number of recently described nerv species of living pupfishes and crayfishes, and extinct snails from isolated springs, as follows: Charco Palma: Clryrinodonbngidorsalis, discovered 1984, ex[inct L994. Ia Trinidad: C. inmemoriam end cra;rfish, discovered 1984, extinct 1986. CharcoAzul: C. veronicae and crayfish, discovered 1984, barely surviving in L994; the snails Valvata beltani and Valvaa sp. were exlinct when discovered. I^a Presa: C. ceciliae and crayfish, discovered l9BB, extinct 1990. Potosi: Megupsilan aporut and Cyprinodon alvarezi discovered between 1948 and 1961, almost extinct 1994. Exinction was rapid due to depletion of aquifers for agrio:ltural needs, which is irrational, not sr:stainable, and illegal. Conservation of this biodiversity, and the agriorlture, needs regional management of the geohydrological basins. Also needed is a better interaction of scientists and technicians of the several disciplines on biodiversitlr - conservation development and the other stakeholders in order to attain true sustainability. RESLNUEN l^as exploraciones del Srido suroeste de Nuevo I-e6n, M6dco, han revelado la extinci6n de un nimero de especies reci6ntemente descrit:s, de peces cachorritos y acociles vivientes, y c:racoles extintos, de manantiales aislados, como sigue: Charco Palma: Clryrinodatlangidorsalis, descubrimiento 1984, extinci6n L994. IATdnidad C- inmcmorian yacocil, descubrimiento 1984, extinci6n 1986. CharcoAzul: C. veronicaz y acocil, descripci6n 1984, sobreviviendo en 1994; los extintos caracoles Valvata beltrani y Valvaa sp. fueron descubiertos como conchas secr.“. La Presa: C. ceciliae y acocil, descubrimiento 1988, extinci6n 1990. Potosi Megupsibn aporu:t arrdCypinodon alvarezi descubrimientos de 1948 a 1961, casi extintos 1994. I as extinciones han sido r6pidas a consecuencia de un abatimiento creciente de mantos acuiferos para fines agricolas, irracional, no sustentable e ilegal. I-a conservaci,6n de 6sta biodiversidad, y de la agricultura, requiere de maneio regional integral de las cuencas geohidrol6gicas. Se requiere mayor interacci6n de cientificos y t6cnicos de todas las disciplinas relacionadas con biodiversidad - conservaci6n - desarrollo para alcanzar la sustentabilidad- CoNrnEnes-BerogRAs, S “ 1ao**“oo.r dc. su Nicdlr, N.L. M6do) Mexican Rio Grande Area Coordinator Report - status of some fish communities and environmental legislation KEYWORDS: M6xico; Chihuahua; drought; pollution; environmental; legislation; sequia; contaminaci6n; legislaci6n The long lasting recent drought in northeastern M6xico had a strong impact on Chihuahuan Desert fishes. Several localities in Chihuahua had been monitored from 1963 to the late l98o’s, reporting reductions of the fish communities averegrng 57.796. Several of the Chihuahua-Durango localities were visited in May, 1995, finding the rivers completely dry Estaci6n Sauz, Rfo Florido at )imenez, Rfo Nazas across from Torre6n, Rio Carmen near Ahumada. Other localities had been converted into sewage canals and have no fish, such as Rfo Chuviscar at Chihuahua, and atAldama- The Federal Government of Mdxico organized a nation-wide series of public hearings as the basis for 28