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Ecological and Geomorphic Impact of the Destruction of a Coastal Sand Dune System in a Sand Spit

by Oscar Efra?n Gonz?lez-Yajimovich, Univ Autonoma de Baja California, Ensenada, Mexico,
Anamaria Escofet, Univ Autonoma de Baja California, Ensenada, Mexico,



Document Type: Proceeding Paper

Part of: Coastal Zone '91

Abstract:

Two main effects of the destruction of the coastal dunes at the sand spit of Estero de Punta Banda, (B.C., Mexico) were studied comparing unaltered and altered adjacent zones, The amount of sediment transported to the lagoon through the altered zone was three times as much as in the unaltered zone. The number of individual Snowy Plover was significantly bigger in the unaltered zone. Both the geomorphic and biological effects suggest that the common practice of destruction of dunes systems should be given better attention in coastal management programs.

Subject Headings: Sediment transport | Dunes | Sandy soils | Sand (hydraulic) | Sea water | Developing countries | Coastal management | Mexico

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