Monitoring and Control of Coral Reef Dredging
Author | : Russell J. Maharaj |
Publisher | : |
Total Pages | : 22 |
Release | : 2001 |
Genre | : Carbonate rocks |
ISBN | : |
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Author | : Russell J. Maharaj |
Publisher | : |
Total Pages | : 22 |
Release | : 2001 |
Genre | : Carbonate rocks |
ISBN | : |
Author | : |
Publisher | : PIANC |
Total Pages | : 94 |
Release | : 2010 |
Genre | : Coral reef management |
ISBN | : 2872231773 |
Author | : Clive R. Wilkinson |
Publisher | : |
Total Pages | : 152 |
Release | : 2003 |
Genre | : Coral reef conservation |
ISBN | : |
Author | : Andre Jon Uychiaoco |
Publisher | : |
Total Pages | : 92 |
Release | : 2001 |
Genre | : Coral reef conservation |
ISBN | : 9789719229001 |
Author | : Jonathan Turnbull Phinney |
Publisher | : American Geophysical Union |
Total Pages | : 251 |
Release | : 2006-01-10 |
Genre | : Science |
ISBN | : 0875903592 |
Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 61. The effects of increased atmospheric carbon dioxide and related climate change on shallow coral reefs are gaining considerable attention for scientific and economic reasons worldwide. Although increased scientific research has improved our understanding of the response of coral reefs to climate change, we still lack key information that can help guide reef management. Research and monitoring of coral reef ecosystems over the past few decades have documented two major threats related to increasing concentrations of atmospheric CO2: (1) increased sea surface temperatures and (2) increased seawater acidity (lower pH). Higher atmospheric CO2 levels have resulted in rising sea surface temperatures and proven to be an acute threat to corals and other reef-dwelling organisms. Short periods (days) of elevated sea surface temperatures by as little as 1–2°C above the normal maximum temperature has led to more frequent and more widespread episodes of coral bleaching-the expulsion of symbiotic algae. A more chronic consequence of increasing atmospheric CO2 is the lowering of pH of surface waters, which affects the rate at which corals and other reef organisms secrete and build their calcium carbonate skeletons. Average pH of the surface ocean has already decreased by an estimated 0.1 unit since preindustrial times, and will continue to decline in concert with rising atmospheric CO2. These climate-related Stressors combined with other direct anthropogenic assaults, such as overfishing and pollution, weaken reef organisms and increase their susceptibility to disease.
Author | : Susie Westmacott |
Publisher | : IUCN |
Total Pages | : 48 |
Release | : 2000 |
Genre | : Convention on Biological Diversity. (1992) |
ISBN | : 2831705452 |
Author | : John Pernetta |
Publisher | : IUCN |
Total Pages | : 112 |
Release | : 1993 |
Genre | : Anthozoa |
ISBN | : 2831701171 |
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 137 |
Release | : 2002-08-09 |
Genre | : Science |
ISBN | : 0309083400 |
Concerns over the potential ecological effects of fishing have increased with the expansion of fisheries throughout the marine waters of the United States. Effects of Trawling and Dredging on Seafloor Habitat describes how assessment of fishing impacts depends on gear type, number and location of bottom tows, and the physical and biological characteristics of seafloor habitats. Many experimental studies have documented acute, gear-specific effects of trawling and dredging on various types of habitat. These studies indicate that low mobility, long-lived species are more vulnerable to towed fishing gear than short-lived species in areas where the seabed is often disturbed by natural phenomena. Trawling and dredging may also change the composition and productivity of fish communities dependent on seafloor habitats for food and refuge. The scale of these impacts depends on the level of fishing effort. This volume presents color maps of fishing effort for all regions with significant bottom trawl or dredge fisheries-the first time that such data has been assembled and analyzed for the entire nation.
Author | : |
Publisher | : |
Total Pages | : 362 |
Release | : 2000 |
Genre | : |
ISBN | : |
Author | : John R. Clark |
Publisher | : CRC Press |
Total Pages | : 717 |
Release | : 2018-05-04 |
Genre | : Law |
ISBN | : 1351459953 |
Coastal Zone Management Handbook comprises the first complete manual on coastal resource planning and management technology. Written by an international consultant, this handbook reflects a global perspective on the natural resources, sensitivities, economics, development, productivity, and diversity of coastal zones. The emphasis is on tropical and subtropical coastal ecosystems, but the information is widely applicable. In addition to its comprehensive coverage of general concepts related to coastal regions, the book describes the strategic basis for coastal management, provides a set of working tools for management and planning activities, and presents case histories of management projects around the globe. Extensive references are provided for each management analysis, practice, technique, and solution. Coastal Zone Management Handbook is made up of four sections: