Author: Ralph W. Tingley (III.)
Publisher:
ISBN:
Category : Arctic grayling
Languages : en
Pages : 372

Get Book Here

Book Description

Author: Mary Fales
Publisher:
ISBN:
Category :
Languages : en
Pages : 72

Get Book Here

Book Description

Author: Paul J. Steen
Publisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 51

Get Book Here

Book Description

Author: Faith A. Fitzpatrick
Publisher:
ISBN:
Category : Stream conservation
Languages : en
Pages : 68

Get Book Here

Book Description

Author: Faith A. Fitzpatrick
Publisher:
ISBN:
Category : Stream conservation
Languages : en
Pages : 80

Get Book Here

Book Description

Author:
Publisher:
ISBN:
Category : Stream ecology
Languages : en
Pages : 82

Get Book Here

Book Description
Stream habitat is characterized in the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program as part of an integrated physical, chemical, and biological assessment of the Nation's water quality. The goal of stream habitat characterization is to relate habitat to other physical, chemical, and biological factors that describe water-quality conditions. To accomplish this goal, environmental settings are described at sites selected for water-quality assessment. In addition, spatial and temporal patterns in habitat are examined at local, regional, and national scales. This habitat protocol contains updated methods for evaluating habitat in NAWQA Study Units. Revisions are based on lessons learned after 6 years of applying the original NAWQA habitat protocol to NAWQA Study Unit ecological surveys. Similar to the original protocol, these revised methods for evaluating stream habitat are based on a spatially hierarchical framework that incorporates habitat data at basin, segment, reach, and microhabitat scales. This framework provides a basis for national consistency in collection techniques while allowing flexibility in habitat assessment within individual Study Units. Procedures are described for collecting habitat data at basin and segment scales; these procedures include use of geographic information system data bases, topographic maps, and aerial photographs. Data collected at the reach scale include channel, bank, and riparian characteristics.

Author: Kristi D. Klomp
Publisher:
ISBN:
Category : Dam retirement
Languages : en
Pages : 204

Get Book Here

Book Description

Author: Javier Lobón-Cerviá
Publisher: John Wiley & Sons
ISBN: 1119268311
Category : Technology & Engineering
Languages : en
Pages : 821

Get Book Here

Book Description
Brown Trout: Biology, Ecology and Management A comprehensive guide to the most current research, history, genetics and ecology of the brown trout including challenging environmental problems The brown trout is an iconic species across its natural European distribution and has been introduced throughout the World. Brown Trout offers a comprehensive review of the scientific information and current research on this major fish species. While the brown trout is the most sought species by anglers, its introduction to various waters around the world is causing serious environmental problems. At the same time, introduction of exogenous brown trout lineages threats conservation of native gene pools of populations in many regions. The authors summarize the important aspects of the brown trout’s life history and ecology and focus on the impact caused by the species. The text explores potential management strategies in order to maintain numerous damaged populations within its natural distributional range and to ameliorate its impacts in exotic environments. The authors include information on a wide-range of topics such as recent updates in population genetics, evolutionary history, reproductive traits and early ontogeny, life history plasticity in anadromous brown trout and life history of the adfluvial brown trout and much more. This vital resource: Contains the latest research on the biology and ecology of brown trout Includes information on phylogeography, genetics, population dynamics and stock management Spotlights the brown trout’s introduction to regions around the world and the serious environmental impacts Offers a comprehensive review of conservation and management techniques Written for salmonid scientists and researchers, fishery and environmental managers, and students of population genetics, ecology and population dynamics, Brown Trout explores the most recent findings on the history, ecology and sustainability of this much-researched species.

Author: William S. Platts
Publisher:
ISBN:
Category : Aquatic ecology
Languages : en
Pages : 76

Get Book Here

Book Description

Author:
Publisher:
ISBN:
Category : Freshwater ecology
Languages : en
Pages : 56

Get Book Here

Book Description