ENVIRONMENT - Key
Baja California Sur has insufficient water, forest,
pasturelands, and fertile soil resources to support its existing
and future population growth. Foremost among the major threats
are: marine influence (e.g. abrasion, corrosion, saline
intrusion, sea penetration); occasional intense fluvial
phenomena (e.g. flooding, erosion, migration of water courses
and streams, water freshets); slumping (e.g. landslides,
inadequate drainage, unstable slopes); wind effects; and
problems caused by pollution, dumping, over-exploitation of
aquifers, disorderly construction development, extraction of
materials, and grading or leveling fragile areas.
Another extremely fragile element in Baja California Sur is its
poor households are forced to cut down trees and vegetation in
the surrounding rural areas because they lack the money to
produce goods or services for self-consumption or for the
market. This practice often creates dangerous conditions in
times of fire or flood when natural vegetation would otherwise
mitigate these disasters.
desert characteristics of the islands in the Gulf of California,
their isolation, and scarce fresh water have all protected the
islands from adverse uses, thus turning them into some of the
most protected island ecosystems in the world. However, human
activity on the islands and in their adjacent waters is on the
rise, and consequently, threats to the island ecosystems have
also multiplied. The state’s vast coastline, in general, and the
coastline between the municipalities of Los Cabos and La Paz, in
particular, are exposed to a risk of deterioration caused by the
ever-increasing commercial development over the past two
Finally, we cannot exclude the 171 oases that occur in Baja
California Sur. These isolated ecosystems ─
relics of tropical environments now in arid zones─ play an important role in bio-geographical mix of flora and
fauna. The oases account for less than 1% of the state’s
geographic territory, yet an important proportion of the
biodiversity are concentrated in them, as well a number of
endemic species, which co-exist with abundant human activities
and population centers.
 Some oases have been affected by
the drainage of the aquifers, palm and reed cutting, and
introduction of exotic species; these have lost structural
complexity and biological diversity.
6 7 8 9 10 11 12
Programa Nacional de Desarrollo Social 2001-2006,
“Superación de la pobreza: Una Tarea Contigo,” 1ª.
Edición, México, D.F. 2001., p.12.
 Gob. Del
Estado de BCS, PEOT, Op.
Cit., p. 73.
Reynoso Mendoza, F; Barjau-Gonzalez, E., “Fishes of the
continental waters of Baja California Sur, Mexico, in
the collection of the Natural History Museum of the
Universidad Autónoma de Baja California Sur”, 1994
Annual Symposium of the Desert Fishes Council, Proc.
Desert Fishes Council, 1995./ Alaniz-Garcia, J;
Ruiz-Campos, G., “Trophic interaction between the
endemic cyprinodontid Fundulus lima and the poeciliid
Xiphophorus helleri in the San Ignacio Oasis, B.C.S.,
Mexico”, 1994 Annual Symposium of the Desert Fishes
Council, Proc. Desert Fishes Council, 1995./
Reynoso-Mendoza, F., “A new population of Fundulus lima
Vaillant 1894 (Cyprinodontidae) in Baja California,
México”, 1994 Annual Symposium of the Desert Fishes
Council, Proc. Desert Fishes Council, 1995.