Problem: The quality and quantity of our Nation’s conservation corridors have declined for the last several decades. Natural corridors are frequently squeezed by adjacent land uses or severed by roads, utilities, dams, or other types of human development. Narrow and segmented corridors are less effective as travel lanes for wildlife dispersal and other ecological functions. Hundreds of miles of fence rows, windbreaks, and other planted corridors are removed annually to accommodate changing agricultura...

Action: How corridors are arranged and connected within the larger landscape context determine their wildlife value. This principle provides land managers with a tool to manage wildlife species diversity effectively. The cumulative effect of corridor arrangement influences wildlife population dynamics. Designing corridor systems is a task of creating strategic configurations across ownerships and land uses. The objective is to restore targeted ecological functions at watershed scales.   The material ...

Problem: Las reservas marinas totalmente protegidas1 son áreas marinas completamente vedadaspara la pesca y otros usos humanos extractivos o dañinos. Desde que se establecieron lasprimeras reservas totalmente protegidas, hace más de dos décadas, han generado un inmensointerés y un gran cúmulo de investigaciones. La evidencia científica reciente indica que lasreservas no sólo son herramientas poderosas para la conservación, sino que también puedenofrecer el tan necesario apoyo para las pesquerías. Hay ...

Action: No se puede negar que la pesca está causando inmensos problemas en el mar. Especiesque alguna vez sustentaron pesquerías valiosas, como el lenguado del atlántico(Hippoglossus hippoglossus), el atún del sur (Thunnus maccoyii) y el chancharrobocacio (Sebastes paucispinus) han disminuido tanto que ahora se les incluye en laLista Roja de Animales Amenazados de la Unión Mundial para la Naturaleza. Noobstante, no es necesario que una especie sea rara o que sea un objetivo pequeroespecífico para que...

Problem: Fully-protected marine reserves are areas of the sea completely protected from fishing and other extractive or harmful human uses. Since the first fully-protected reserves were established, more than two decades ago, they have stimulated a wealth of research and intense interest. Recent scientific evidence indicates that reserves are not only powerful tools for conservation, but can also provide much needed support for fisheries. There is an urgent need for more reserves in order to address t...

Action: There is no doubt that fishing is causing major problems in the sea. Some species that once supported valuable fisheries, such as Atlantic halibut (Hippoglossus hippoglossus), southern bluefin tuna (Thunnus maccoyii) and the boccacio rockfish (Sebastes paucispinus) have declined so much they are now included on the World Conservation Union’s Red List of Threatened Animals. However a species does not need to be rare, or specifically targeted, to be at risk from fishing. Over-exploitation has i...