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253 produkter

Marine Mammals and Low-Frequency Sound
Progress Since 1994
Av Committee to Review Results of ATOC's Marine Mammal Research Program, Ocean Studies Board m. fl.
E-bok, 2000
693 kr
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Sound has become a major tool for studying the ocean. Although the ocean is relatively opaque to light, it is relatively transparent to sound. Sound having frequencies below 1,000 Hertz (Hz) is often defined as low-frequency sound. The speed of sound is proportional to the temperature of the water …
Applications of Analytical Chemistry to Oceanic Carbon Cycle Studies
Av National Research Council, Division on Earth and Life Studies m. fl.
Häftad, 1993
1303 kr
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This book both describes the chemical parameters that must be measured in the ocean in order to improve our understanding of the ocean's role in the global carbon cycle and recommends technologies of analytical chemistry that could be applied to these parameters. Additionally, the volume recommends …
50 Years of Ocean Discovery
National Science Foundation 1950-2000
Av National Research Council, Division on Earth and Life Studies m. fl.
Inbunden, 2000
1376 kr
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This book describes the development of ocean sciences over the past 50 years, highlighting the contributions of the National Science Foundation (NSF) to the field's progress. Many of the individuals who participated in the exciting discoveries in biological oceanography, chemical oceanography, …
Bridging Boundaries Through Regional Marine Research
Av National Research Council, and Resources Commission on Geosciences, Environment m. fl.
Häftad, 2000
1339 kr
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As appreciation of the interdisciplinary and multidimensional character of environmental issues has increased, there have been attempts to address regional needs more directly. One of these, the Regional Marine Research Program (RMRP), was established by Congress in 1990 to provide a mechanism to …
Clean Coastal Waters
Understanding and Reducing the Effects of Nutrient Pollution
Av National Research Council, and Resources Commission on Geosciences, Environment m. fl.
Inbunden, 2000
1571 kr
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Environmental problems in coastal ecosystems can sometimes be attributed to excess nutrients flowing from upstream watersheds into estuarine settings. This nutrient over-enrichment can result in toxic algal blooms, shellfish poisoning, coral reef destruction, and other harmful outcomes. All U.S. …
Oil Spill Recovery Institute
Past, Present, and Future Directions
Av National Research Council, Division on Earth and Life Studies m. fl.
Häftad, 2003
765 kr
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As a result of the 1989 Exxon Valdez Oil Spill in Prince William Sound, Congress passed the Oil Pollution Act of 1990 (OPA 90), and within that legislation, the Oil Spill Recovery Institute (OSRI) was born. This report assesses the strength and weaknesses of this research program, with emphasis on …
Ocean Noise and Marine Mammals
Av National Research Council, Division on Earth and Life Studies m. fl.
Häftad, 2003
704 kr
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For the 119 species of marine mammals, as well as for some other aquatic animals, sound is the primary means of learning about the environment and of communicating, navigating, and foraging. The possibility that human-generated noise could harm marine mammals or significantly interfere with their …
Research Strategy for Ocean-based Carbon Dioxide Removal and Sequestration
Av and Medicine National Academies of Sciences, Engineering, Division on Earth and Life Studies m. fl.
Häftad, 2022
704 kr
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As of 2021, atmospheric carbon dioxide levels have reached historically unprecedented levels, higher than at any time in the past 800,000 years. Worldwide efforts to reduce emissions by creating a more efficient, carbon-free energy system may not be enough to stabilize the climate and avoid the …
Research Strategy for Ocean-based Carbon Dioxide Removal and Sequestration
Av Committee on A Research Strategy for Ocean-based Carbon Dioxide Removal and Sequestration, Ocean Studies Board m. fl.
E-bok, 2022
1039 kr
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As of 2021, atmospheric carbon dioxide levels have reached historically unprecedented levels, higher than at any time in the past 800,000 years. Worldwide efforts to reduce emissions by creating a more efficient, carbon-free energy system may not be enough to stabilize the climate and avoid the …
Geospatial Framework for the Coastal Zone
National Needs for Coastal Mapping and Charting
Av National Research Council, Division on Earth and Life Studies m. fl.
Häftad, 2004
618 kr
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The coastal zone is of enormous importance to the well-being of the nation, as our lives and economy are inextricably linked to the features and activities that occur within this dynamic region. In order to understand and address the effects of natural and anthropogenic forces in the coastal zone, …
Review of the Ocean Research Priorities Plan and Implementation Strategy
Av Committee to Review the Joint Subcommittee on Ocean Science and Technology's Research Priorities Plan, Ocean Studies Board m. fl.
E-bok, 2007
390 kr
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Ocean research offers countless benefits, from improving fisheries management to discovering new drugs to enabling early detection of tsunamis and hurricanes. At the request of the Joint Subcommittee on Ocean Science and Technology (JSOST), the National Research Council convened a committee to …
Increasing Capacity for Stewardship of Oceans and Coasts
A Priority for the 21st Century
Av Committee on International Capacity-Building for the Protection and Sustainable Use of Oceans and Coasts, Ocean Studies Board m. fl.
E-bok, 2008
520 kr
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Marine environments support the livelihoods, economies, and quality of life for communities around the world. But growth of coastal populations and increasing demands on marine resources are putting the future of ocean and coastal resources at risk through impacts such as overfishing, wetland …
Tackling Marine Debris in the 21st Century
Av Committee on the Effectiveness of International and National Measures to Prevent and Reduce Marine Debris and Its Impacts, Ocean Studies Board m. fl.
E-bok, 2008
641 kr
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Marine debris from ships and other ocean-based sources-including trash and lost fishing gear-contributes to the spoiling of beaches, fouling of surface waters and the seafloor, and harm to marine animals, among other effects. Unfortunately, international conventions and domestic laws intended to …
Scientific Assessment of Alternatives for Reducing Water Management Effects on Threatened and Endangered Fishes in California's Bay-Delta
Av Committee on Sustainable Water and Environmental Management in the California Bay-Delta, Water Science and Technology Board m. fl.
E-bok, 2010
373 kr
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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 and Wildlife Service and …
Abrupt Climate Change
Inevitable Surprises
Av Committee on Abrupt Climate Change, Ocean Studies Board m. fl.
E-bok, 2002
762 kr
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The climate record for the past 100,000 years clearly indicates that the climate system has undergone periodic—and often extreme—shifts, sometimes in as little as a decade or less. The causes of abrupt climate changes have not been clearly established, but the triggering of events is likely to be …
Ocean Noise and Marine Mammals
Av Committee on Potential Impacts of Ambient Noise in the Ocean on Marine Mammals, Ocean Studies Board m. fl.
E-bok, 2003
693 kr
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For the 119 species of marine mammals, as well as for some other aquatic animals, sound is the primary means of learning about the environment and of communicating, navigating, and foraging. The possibility that human-generated noise could harm marine mammals or significantly interfere with their …
Marine Mammal Populations and Ocean Noise
Determining When Noise Causes Biologically Significant Effects
Av Committee on Characterizing Biologically Significant Marine Mammal Behavior, Ocean Studies Board m. fl.
E-bok, 2005
676 kr
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Attention has been drawn to the subject of how ocean noise affects marine mammals by a series of marine mammal strandings, lawsuits, and legislative hearings, and most recently, the report from the U.S. Commission on Ocean Policy. One way to assess the impact of ocean noise is to consider whether …
Oceanography in 2025
Proceedings of a Workshop
Av Committee on Oceanography in 2025: A Workshop, Ocean Studies Board m. fl.
E-bok, 2009
589 kr
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On January 8 and 9, 2009, the Ocean Studies Board of the National Research Council, in response to a request from the Office of Naval Research, hosted the "Oceanography in 2025" workshop. The goal of the workshop was to bring together scientists, engineers, and technologists to explore future …
Tsunami Warning and Preparedness
An Assessment of the U.S. Tsunami Program and the Nation''s Preparedness Efforts
Av Committee on the Review of the Tsunami Warning and Forecast System and Overview of the Nation's Tsunami Preparedness, Ocean Studies Board m. fl.
E-bok, 2011
824 kr
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Many coastal areas of the United States are at risk for tsunamis. After the catastrophic 2004 tsunami in the Indian Ocean, legislation was passed to expand U.S. tsunami warning capabilities. Since then, the nation has made progress in several related areas on both the federal and state levels. At …
Shellfish Mariculture in Drakes Estero, Point Reyes National Seashore, California
Av California Committee on Best Practices for Shellfish Mariculture and the Effects of Commercial Activities in Drakes Estero, Pt. Reyes National Seashore, Ocean Studies Board m. fl.
E-bok, 2009
459 kr
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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 Drakes Estero with …
Shellfish Mariculture in Drakes Estero, Point Reyes National Seashore, California
Av California Committee on Best Practices for Shellfish Mariculture and the Effects of Commercial Activities in Drakes Estero, Pt. Reyes National Seashore, Ocean Studies Board m. fl.
E-bok, 2009
641 kr
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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 Drakes Estero with …
Final Report from the NRC Committee on the Review of the Louisiana Coastal Protection and Restoration (LACPR) Program
Av Committee on the Review of the Louisiana Coastal Protection and Restoration (LACPR) Program, Water Science and Technology Board m. fl.
E-bok, 2009
286 kr
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The U.S. Army Corps of Engineers released the Louisiana Coastal Protection and Restoration (LACPR) draft final technical report in March, 2009. In response to federal legislation, the Corps had to analyze hurricane protection, and design and present a full range of measures to protect against a …
Science at Sea
Meeting Future Oceanographic Goals with a Robust Academic Research Fleet
Av Committee on Evolution of the National Oceanographic Research Fleet, Ocean Studies Board m. fl.
E-bok, 2009
416 kr
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The U.S. academic research fleet is an essential national resource, and it is likely that scientific demands on the fleet will increase. Oceanographers are embracing a host of remote technologies that can facilitate the collection of data, but will continue to require capable, adaptable research …
Ecosystem Concepts for Sustainable Bivalve Mariculture
Av California Committee on Best Practices for Shellfish Mariculture and the Effects of Commercial Activities in Drakes Estero, Pt. Reyes National Seashore, Ocean Studies Board m. fl.
E-bok, 2010
572 kr
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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 …
Science at Sea
Meeting Future Oceanographic Goals with a Robust Academic Research Fleet
Av Committee on Evolution of the National Oceanographic Research Fleet, Ocean Studies Board m. fl.
E-bok, 2009
589 kr
Lägg i varukorg
The U.S. academic research fleet is an essential national resource, and it is likely that scientific demands on the fleet will increase. Oceanographers are embracing a host of remote technologies that can facilitate the collection of data, but will continue to require capable, adaptable research …
Ecosystem Concepts for Sustainable Bivalve Mariculture
Av California Committee on Best Practices for Shellfish Mariculture and the Effects of Commercial Activities in Drakes Estero, Pt. Reyes National Seashore, Ocean Studies Board m. fl.
E-bok, 2010
831 kr
Lägg i varukorg
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 …
Assessment of Sea-Turtle Status and Trends
Integrating Demography and Abundance
Av Committee on the Review of Sea-Turtle Population Assessment Methods, Ocean Studies Board m. fl.
E-bok, 2010
537 kr
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All six species of sea turtles found in U.S. waters are listed as endangered or threatened, but the exact population sizes of these species are unknown due to a lack of key information regarding birth and survival rates. The U.S. Endangered Species Act prohibits the hunting of sea turtles and …
Ocean Acidification
A National Strategy to Meet the Challenges of a Changing Ocean
Av Committee on the Development of an Integrated Science Strategy for Ocean Acidification Monitoring, Ocean Studies Board m. fl.
E-bok, 2010
415 kr
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The ocean has absorbed a significant portion of all human-made carbon dioxide emissions. This benefits human society by moderating the rate of climate change, but also causes unprecedented changes to ocean chemistry. Carbon dioxide taken up by the ocean decreases the pH of the water and leads to a …
Oil Spill Dispersants
Efficacy and Effects
Av Committee on Understanding Oil Spill Dispersants: Efficacy and Effects, Ocean Studies Board m. fl.
E-bok, 2005
830 kr
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Approximately 3 million gallons of oil or refined petroleum products are spilled intoU.S. waters every year. Oil dispersants (chemical agents such as surfactants, solvents,and other compounds) are used to reduce the effect of oil spills by changing thechemical and physical properties of the oil. By …
Scientific Assessment of Alternatives for Reducing Water Management Effects on Threatened and Endangered Fishes in California's Bay-Delta
Av Committee on Sustainable Water and Environmental Management in the California Bay-Delta, Water Science and Technology Board m. fl.
E-bok, 2010
542 kr
Lägg i varukorg
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 and Wildlife Service and …