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Download or read book Effects of Depth on Dredging Frequency written by Michael J. Trawle and published by . This book was released on 1978 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Depth on Dredging Frequency written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Depth on Dredging Frequency written by Michael J. Trawle and published by . This book was released on 1981 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Depth on Dredging Frequency written by Rutherford C. Berger and published by . This book was released on 1985 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: National Research Council
Publisher: National Academies Press
Published: 2002-08-09
Total Pages: 137
ISBN-13: 0309083400
DOWNLOAD EBOOKConcerns 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.
Download or read book Effects of Trawling and Dredging on Seafloor Habitat written by National Research Council and published by National Academies Press. This book was released on 2002-08-09 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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: National Research Council
Publisher: National Academies Press
Published: 1987-02-01
Total Pages: 352
ISBN-13: 0309077958
DOWNLOAD EBOOKDownload or read book Sedimentation Control to Reduce Maintenance Dredging of Navigational Facilities in Estuaries written by National Research Council and published by National Academies Press. This book was released on 1987-02-01 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Notes on Sedimentation Activities written by and published by . This book was released on 1977 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: National Research Council
Publisher: National Academies Press
Published: 1985-02-01
Total Pages: 223
ISBN-13: 0309036283
DOWNLOAD EBOOKAre the nation's ports adequate for our present and future needs? This volume points out that no significant new deep-water construction has occurred for a decade, and provides the information and analysis needed to goad the ports and the federal government into action. The book asks three questions: Is additional port construction and maintenance dredging needed now or over the next 20 years? What would prevent dredging if it is needed? What alternatives could make additional dredging possible? The book identifies several problems in dredging ports, including the long interval between a decision to deepen a port and the time the alterations are complete. The United States needs to speed port construction to meet changing needs, and the committee recommends that we prepare for future needs by dredging now.
Download or read book Dredging Coastal Ports written by National Research Council and published by National Academies Press. This book was released on 1985-02-01 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Are the nation's ports adequate for our present and future needs? This volume points out that no significant new deep-water construction has occurred for a decade, and provides the information and analysis needed to goad the ports and the federal government into action. The book asks three questions: Is additional port construction and maintenance dredging needed now or over the next 20 years? What would prevent dredging if it is needed? What alternatives could make additional dredging possible? The book identifies several problems in dredging ports, including the long interval between a decision to deepen a port and the time the alterations are complete. The United States needs to speed port construction to meet changing needs, and the committee recommends that we prepare for future needs by dredging now.
Download or read book Committee on Tidal Hydraulics Report written by and published by . This book was released on 1980 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Tidal Hydraulics written by and published by . This book was released on 1987 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
