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Author: Daryl Lescanec Publisher: ISBN: Category : Chinook salmon Languages : en Pages : 0
Book Description
This project will enumerate coho salmon (Oncorhynchus kisutch) and other fish passage at a floating resistance-board weir in the Jim Creek drainage during 2023–2027. The number of adult coho and sockeye salmon that pass through the weir from 20 July to 30 September will be counted and estimates of sex composition for adult coho salmon and age and sex composition of adult sockeye salmon will be made for both years.
Author: Daryl Lescanec Publisher: ISBN: Category : Chinook salmon Languages : en Pages : 0
Book Description
This project will enumerate coho salmon (Oncorhynchus kisutch) and other fish passage at a floating resistance-board weir in the Jim Creek drainage during 2023–2027. The number of adult coho and sockeye salmon that pass through the weir from 20 July to 30 September will be counted and estimates of sex composition for adult coho salmon and age and sex composition of adult sockeye salmon will be made for both years.
Author: Jenny L. Gates Publisher: ISBN: Category : Fish populations Languages : en Pages : 0
Book Description
The Russian River sockeye salmon escapement assessment project, which began in 1962, is one of the oldest stock assessment projects in the state of Alaska. During 2023–2026, the Russian River weir will be operated annually from early June through the first 7 to 10 days of September. All species of fish seen passing the weir through the fish chute will be enumerated daily. Sampling of sockeye salmon for age, sex, and length data will be done each Friday, and the sample size each week will be based on the previous week’s fish passage. Sockeye and Chinook salmon spawning downstream of the Russian River weir to the confluence of the Russian River and the Kenai River will be assessed by a foot survey during the fourth week of August. Multiple foot surveys will also be conducted from mid-May to 10 June to assess spawning rainbow trout.
Author: Mark J. Witteveen Publisher: ISBN: Category : Coho salmon Languages : en Pages : 62
Book Description
A weir will be used on the Buskin River to count the inriver coho salmon run, with harvest estimated by the Alaska Department of Fish and Game statewide harvest survey, returned subsistence permits, and commercial fish tickets. Age and sex information will be collected from the Buskin River coho salmon run and the composition of the run by age and sex will be estimated. In addition, coho salmon escapements to 10 other drainages on the Kodiak road system (KRS) will also be indexed. SEGs associated with the American, Olds and Pasagshak Rivers will be monitored via postseason escapement foot surveys. A simultaneous postseason drone survey will also be conducted on the American and Olds rivers to explore establishment of drone-based SEGs. Multiple inseason surveys will be conducted by drone at each of the Olds, American, and Pasagshak river drainages to provide inseason run information to fishery managers; the inseason data will also be used to explore new ways of establishing SEGs for the Pasagshak river. Postseason escapement foot surveys will be conducted for the remaining 7 KRS rivers without SEGs (Monashka, Pillar, Salonie, Felton, Roslyn, Sargent, and Russian). The Pasagshak River coho salmon escapement will also be estimated with a temporally stratified mark-recapture study.
Author: Holly I. Dickson Publisher: ISBN: Category : Coho salmon Languages : en Pages : 38
Book Description
In 2021, the Alaska Department of Fish and Game, Division of Sport Fish will operate a sonar project to estimate coho salmon (Oncorhynchus kisutch) escapement in Battle Creek, located approximately 2 miles southwest of the Bradley Lake Hydroelectric Project, which partially diverted Battle Creek into Bradley Lake at river kilometer 10.9 starting in 2020. The sonar will be operated at river kilometer 1.7 from early September until mid-November or the stream ices over, whichever is earlier. A fixed-picket weir will be installed to constrict fish passage in front of the sonar. Beach seine sampling will be conducted when the sonar is installed to determine if any adult coho salmon migrated past the sonar site prior to installation. Additional seine sampling will be conducted to determine if species apportionment is needed for the sonar counts. Foot surveys to visually count adult coho salmon will also be conducted such that data are comparable to previous years’ surveys conducted by the Alaska Energy Authority. Juvenile coho salmon sampling will occur in mid-October or when the stream flow reaches 75 cfs or less. Baited minnow traps will be used, and an analysis of catch-per-unit-effort will be used as an index of abundance of juvenile coho salmon between years.
Author: Jeffrey T. Williams Publisher: ISBN: Category : Coho salmon Languages : en Pages : 0
Book Description
Coho salmon Oncorhynchus kisutch smolt abundance and adult escapement will be estimated for the Taku stock of coho salmon originating from the Canadians portion of the Taku River, above the U.S./Canada border. This large glacial river flows into Taku Inlet about 30 km northeast of Juneau, Alaska. Multiple, independent sampling approaches will be used including coded wire tagging of smolt, adult harvest sampling, and an inriver adult mark-recapture experiment. A modified Petersen estimator will be used to estimate the smolt emigration during 2019 to 2021. A mark-recapture experiment will be used to estimate inriver runs of adult coho salmon in 2019 to 2021. Radio tags will be used to estimate the number of fish tagged during event 1 of the adult mark-recapture experiment that did not pass the U.S./Canada Border. Inriver harvest will be accounted for in determining escapement estimates for coho salmon annually. Scale samples of coho salmon will be used for age analysis to estimate annual age compositions. Coho salmon smolt will be systematically sampled to estimate the mean length for each species.
Author: United States. Federal Highway Administration Publisher: ISBN: Category : Air Languages : en Pages : 48
Book Description
The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) established the Congestion Mitigation and Air Quality Improvement (CMAQ) Program. The CMAQ Program emphasizes the importance of the link between transportation and air quality, by providing 6 billion dollars between 1992-1997 for transportation projects and programs to improve air quality. Consequently, many areas will be able to implement transportation control measures (TCMs), in compliance with the mandates of the Clean Air Act Amendments of 1990 (CAAA).
Author: Clive G. Jones Publisher: Springer Science & Business Media ISBN: 1461517737 Category : Science Languages : en Pages : 403
Book Description
I was asked to introduce this volume by examining "why a knowledge of ecosys tem functioning can contribute to understanding species activities, dynamics, and assemblages." I have found it surprisingly difficult to address this topic. On the one hand, the answer is very simple and general: because all species live in ecosystems, they are part of and dependent on ecosystem processes. It is impossible to understand the abundance and distribution of populations and the species diversity and composition of communities without a knowledge of their abiotic and biotic environments and of the fluxes of energy and mat ter through the ecosystems of which they are a part. But everyone knows this. It is what ecology is all about (e.g., Likens, 1992). It is why the discipline has retained its integrity and thrived, despite a sometimes distressing degree of bickering and chauvinism among its various subdisciplines: physiological, be havioral, population, community, and ecosystem ecology.
Author: Daryl Lescanec
Author: Daryl Lescanec
Author: Jenny L. Gates
Author: California. Dept. of Water Resources
Author: Mark J. Witteveen
Author: Holly I. Dickson
Author: Jeffrey T. Williams
Author: United States. Bureau of Land Management
Author: United States. Federal Highway Administration
Author: Clive G. Jones
Author: