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Earth Sciences

Earth Sciences : Ecology and Ecosystems
A Scientific Assessment of Alternatives for Reducing Water Management Effects on Threatened and Endangered Fishes in California's Bay Delta

California's Bay-Delta estuary is a biologically diverse estuarine ecosystem that plays a central role in the distribution of California's water from the state's wetter northern regions to its southern, arid, and populous cities and agricultural areas. Recently, the Fish ...

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Ecosystem Concepts for Sustainable Bivalve Mariculture

U.S. mariculture production of bivalve molluscs-those cultivated in the marine environment-has roughly doubled over the last 25 years. Although mariculture operations may expand the production of seafood without additional exploitation of wild populations, they still depend upon and affect natural ...

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Shellfish Mariculture in Drakes Estero, Point Reyes National Seashore, California

When Drakes Estero, which lies within the Point Reyes National Seashore (PRNS) about 25 miles northwest of San Francisco, California, was designated by Congress in 1976 as Potential Wilderness, it contained a commercial shellfish  mariculture operation. Oyster mariculture began in ...

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Progress Toward Restoring the Everglades:The Second Biennial Review, 2008

This book is the second biennial evaluation of progress being made in the Comprehensive Everglades Restoration Plan (CERP), a multibillion-dollar effort to restore historical water flows to the Everglades and return the ecosystem closer to its natural state.  Launched in ...

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Does Water Flow Influence Everglades Landscape Patterns?

The report evaluates a White Paper written by restoration planners in South Florida on the role of water flow in restoration plans. The report concludes that there is strong evidence that the velocity, rate, and spatial distribution of water ...

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Desalination: A National Perspective

There has been an exponential increase in desalination capacity both globally and nationally since 1960, fueled in part by growing concern for local water scarcity and made possible to a great extent by a major federal investment for desalination research ...

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Progress Toward Restoring the Everglades: The First Biennial Review, 2006

This report is the first in a congressionally mandated series of biennial evaluations of the progress being made by the Comprehensive Everglades Restoration Plan (CERP), a multibillion-dollar effort to restore historical water flows to the Everglades and return the ecosystem ...

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Dynamic Changes in Marine Ecosystems: Fishing, Food Webs, and Future Options

Recent scientific literature has raised many concerns about whether fisheries have caused more extensive changes to marine populations and ecosystems than previously realized or predicted. In many cases, stocks have been exploited far beyond management targets, and new analyses indicate ...

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Valuing Ecosystem Services: Toward Better Environmental Decision-Making

Nutrient recycling, habitat for plants and animals, flood control, and water supply are among the many beneficial services provided by aquatic ecosystems. In making decisions about human activities, such as draining a wetland for a housing development, it is ...

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Endangered and Threatened Species of the Platte River

The tension between wildlife protection under the Endangered Species Act and water management in the Platte River Basin has existed for more than 25 years. The Platte River provides important habitat for migratory and breeding birds, including three endangered or threatened species: the ...

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