Author: Eric A. Stene
Publisher:
ISBN:
Category : Dams
Languages : en
Pages : 56
Book Description
The Klamath Project
History of Placer and Nevada Counties California
Author: William B. Lardner
Publisher:
ISBN:
Category : Nevada County (Calif.)
Languages : en
Pages : 628
Book Description
Publisher:
ISBN:
Category : Nevada County (Calif.)
Languages : en
Pages : 628
Book Description
Treasurer's Statement
The Orland Project
Author: Robert Autobee
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 80
Book Description
Publisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 80
Book Description
Privacy Act Systems of Records
Author: United States. Bureau of Land Management
Publisher:
ISBN:
Category : Government information
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category : Government information
Languages : en
Pages : 68
Book Description
Effects of Trawling and Dredging on Seafloor Habitat
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309083400
Category : Science
Languages : en
Pages : 137
Book Description
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.
Publisher: National Academies Press
ISBN: 0309083400
Category : Science
Languages : en
Pages : 137
Book Description
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.
Flood Plain Management Plan
Author: Cambria County Planning Commission (Pa.)
Publisher:
ISBN:
Category : Flood control
Languages : en
Pages : 112
Book Description
Publisher:
ISBN:
Category : Flood control
Languages : en
Pages : 112
Book Description
Cancer Registries Amendment Act
Armsmear:
Author: Henry Barnard
Publisher: Рипол Классик
ISBN: 5885120935
Category : History
Languages : en
Pages : 411
Book Description
Publisher: Рипол Классик
ISBN: 5885120935
Category : History
Languages : en
Pages : 411
Book Description
The Exurbanites
Author: Auguste C. Spectorsky
Publisher:
ISBN:
Category : Country life
Languages : en
Pages : 298
Book Description
Publisher:
ISBN:
Category : Country life
Languages : en
Pages : 298
Book Description