Ad Hoc Reservations: Forward or Backward Steps in Developing Representative Reserve Systems?

摘要: A major reason for land reservation has been the relative lack of value selected sites commercial uses or human habitation. Other important reasons include scenery, recreation, tourist potential, influence lobby groups, and historical protection such as hunting water supply. There are two main disadvantages ad hoc approaches to reserve planning. One is bias in content regional systems, leaving some species, communities, ecosystems without protection, often ones most need strict reservation. The second that reservations can make goal representing biodiversity more expensive, reducing likelihood protecting many elements biodiversity. Ad persist despite clearly stated representation goals, improving data bases, systematic techniques selection. causes be understood addressed if potential realized. La principal razon para la reservacion de tierras ha sido falta relativa del valor los sitios seleccionados usos comerciales o habitacionales el hombre. Otras razones importantes incluyen panorama paisajistico, recreacion, turismo potencial, influencia grupos y proteccion historica tales como caza provision agua. Existen dos desventajas mayores estas formas planificacion reservas. Una es sesgo dentro sistema reservas, dejando ciertas especies, comunidades ecosistemas sin proteccion, muy a menudo aquellas con mayor necesidad reservas estrictas. La segunda que las hacen objetivo representar biodiversidad sea mas costoso, reduciendo posibilidad proteger muchos elementos biodiversidad. Los enfoques reservar persisten pesar objetivos representatividad claramente delineados, mejoramiento bases datos tecnicas sistematicas seleccion Las causas principales deben ser entendidas consideradas si se quiere lograr potencial