Abundance and Run Timing of Adult Fall Chum Salmon in the Chandalar River, Yukon Flats National Wildlife Refuge, Alaska, 2007 PDF Download

Author: Jeffery L. Melegari
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 38

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Book Description
A Dual Frequency Identification Sonar (DIDSON) was operated on the Chandalar River from Aug. 8 to Sept. 26, 2007, to assess chum salmon (Oncorhynchus keta) populations.

Author: Jeffery L. Melegari
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 22

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Book Description
A Dual Frequency Identification Sonar (DIDSON) was operated on the Chandalar River from Aug. 8 to Sept. 26, 2008, to assess adult fall chum salmon (Oncorhynchus keta) populations.

Author: Jeffery L. Melegari
Publisher:
ISBN:
Category : Chum salmon
Languages : en
Pages : 34

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Book Description
"A fixed-location split-beam hydroacoustic study was initiated in 1994 to assess the population abundance of adult fall chum salmon Oncorhynchus keta in the Chandalar River, a tributary of the Yukon River. Annual passage estimates have been made since 1995 and daily in-season counts have been provided since 1996. This report presents the results for the 2002-2006 seasons and describes the annual variability in run size and timing"--P. [1].

Author: Steven Jennings Miller
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 80

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Book Description
A resistance board weir was used to collect abundance, run timing, and biological data from salmon returning to spawn in the Kwethluk River, a tributary of the lower Kuskokwim River, between June 24 and Sept. 10, 2007.

Author: Philip F. Schempf
Publisher:
ISBN: 9780888396952
Category : Science
Languages : en
Pages : 0

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Book Description
An expansive collection of papers and articles from internationally recognized bald eagle experts. Presented is a complete portrait of the status and ecology of the bald eagle in Alaska.A collection of papers and articles from international bald eagle experts, which present a complete portrait of the status and ecology of the bald eagle in Alaska. Myriad topics include culture, biology, population history and status, conservation and management, the Alaskan habitat from the northern rainforest to the Aleutian Islands, attitudes from diverse groups from the Tlingit to bounty hunters, along with sound scientific data.

Author: Jeffery L. Melegari
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 26

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Book Description
Between June 23 and July 28, 2007, escapement information for chinook salmon (Oncorhynchus tshawytscha) and chum salmon (Oncorhynchus keta) was recorded using a resistance board weir in the Gisasa River, a tributary of the Koyukuk River, Alaska.

Author: Gerald F. Maschmann
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 29

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Book Description

Author: Ken Charles Harper
Publisher:
ISBN:
Category : Escapement (Fisheries)
Languages : en
Pages : 48

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Book Description

Author: David H. Johnson
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 504

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Book Description
This is the first publication to collect, standardize, and recommend a scientifically rigorous set of field protocols for monitoring and assessing salmon and trout populations. Includes five additional techniques that can be used with any of the 13 principle methods to supplement information gathered.Over four dozen fisheries experts throughout the U.S. Pacific Northwest and beyond contributed their time to pick, write, and review the most reliable protocols for enumerating salmonids in the field. Presented in an easy to use format, each of the 18 peer-reviewed protocols covers objectives, sample design, data handling, personnel and operational requirements, and field and office techniques, including survey forms.Standardized monitoring protocols will improve data reliability, maximize opportunities for data sharing and data set comparability, and ultimately improve the ability to assess status and trends. The Handbook will also support consistency in data collection for salmonids at the international level.

Author: Martyn Lucas
Publisher: John Wiley & Sons
ISBN: 0470999640
Category : Technology & Engineering
Languages : en
Pages : 440

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Book Description
Recent studies have increasingly demonstrated the widespread existence of spatio-temporal variations in the abundance and distribution of species of freshwater fishes, previously assumed not to move between habitats. These movements are often on a seasonal or ontogenetic basis, for spawning, feeding and refuge, and in many cases are fundamental for the successful completion of lifecycles. This important book provides a single source for a range of previously widely dispersed information on these movements of fish in fresh waters, covering potamodromous fishes as well as the more familiar diadromous species, worldwide. Contents include full descriptions of types of migration and spatial behaviour, the stimulus and capacity for fish to migrate, the effects of climate on patterns of migratory behaviour, a taxonomic analysis (mostly by family) of freshwater fish migration, methods for studying migration, and details of the impacts of man's activities on freshwater fish migration. Migration of Freshwater Fishes provides an excellent and comprehensive reference to which the river manager, biologist or student can now refer to obtain information, advice and current opinion on the migratory behaviour of most taxonomic groups of fishes occurring in fresh water. University libraries and aquatic research stations should also have copies of this essential reference book on their shelves. Well-known international authors. Of great commercial importance to fisheries and professional angling bodies. Draws together much new information in one place. Detailed review of world wide migratory behaviour for most groups of freshwater fishes. Pure and applied relevance, for academics, fisheries scientists, river managers and conservationists. This comprehensive book includes 67 tables and figures and over 1,400 references.