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Book Abundance Composition Sustainable Yield and Risk Analysis of the Northern Pike Population in Harding Lake 1998

Download or read book Abundance Composition Sustainable Yield and Risk Analysis of the Northern Pike Population in Harding Lake 1998 written by Stafford M. Roach and published by . This book was released on 1999 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fishery Data Series

Download or read book Fishery Data Series written by and published by . This book was released on 1999 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Abundance and Age length Composition of Northern Pike in Harding Lake 1991 92

Download or read book Abundance and Age length Composition of Northern Pike in Harding Lake 1991 92 written by Cal Skaugstad and published by . This book was released on 1992 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northern pike (Esox lucius) populations in Harding Lake in interior Alaska (south of Fairbanks) were studied during spawning in May and June 1991 and 1992. Abundance was estimated with two-sample mark-recapture experiments. Abundance and age-length composition were determined for the period.

Book Estimates of Sustainable Yield for the Northern Pike Populations in George Volkmar T and Harding Lakes

Download or read book Estimates of Sustainable Yield for the Northern Pike Populations in George Volkmar T and Harding Lakes written by Gary A. Pearse and published by . This book was released on 1993 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report using empirical models of logistic surplus production along with the Ricker method to analyse the stock-recruitment relationship and estimate sustainable yield in terms of subsequent recruitment at maturity of northern pike (Esox lucius) in four interior Alaskan lakes (George, Volkmar, T, and Harding).

Book Estimated Abundance of Northern Pike in Harding Lake 2012

Download or read book Estimated Abundance of Northern Pike in Harding Lake 2012 written by Klaus G. Wuttig and published by . This book was released on 2015 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The abundance of northern pike >450 mm FL was estimated in Harding Lake during 2012 using a 2-sample mark-recapture experiment for a closed population. The first event occurred during May 29-June 7 and a combination of gillnets, fyke nets, hoop traps, and hook-and-line was used to capture fish. The second event occurred during August 7-14 and hook-and-line gear was used exclusively. Abundance was estimated at 567 (SE=47) northern pike >450 mm FL. The length composition was divided into 25-mm length categories and the 550-574 category represented the largest segment (16%) of the estimated population. Harding lake has been closed to fishing for northern pike since the summer of 2000 and the estimated abundance of northern pike during 2012 was well below the minimum level of 1,000 fish >450 mm FL needed to open the fishery to catch-and-release. The low population size is attributed to the chronic loss of shallow littoral areas with emergent vegetation and the associated poor recruitment, which was first evident during the most recent stock assessment in 1999. The last stock assessment during which good recruitment of age-3 and -4 fish was observed occurred in 1996 and corresponded to cohorts from 1992 and 1993 when the water levels ranged between 717.5-717.8 ft ASL. Therefore, this range should be used as a target for reestablishing water levels and historic pike production using the water diversion structure on Rogge Creek. Water level in 2012 was measured at 714.0 ft ASL.

Book Abundance and Composition of Northern Pike Harding Lake 1990

Download or read book Abundance and Composition of Northern Pike Harding Lake 1990 written by Alan Burkholder and published by . This book was released on 1991 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Estimates of stocks of northern pike (Esox lucius) in Harding Lake, southeast of Fairbanks, interior Alaska, as related to sport fishing.

Book Stock Assessment of Northern Pike in Harding Lake 2020

Download or read book Stock Assessment of Northern Pike in Harding Lake 2020 written by Laura Gutierrez and published by . This book was released on 2020 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Harding Lake, an updated estimate of northern pike abundance is needed to determine if the population is large enough to reopen the sport fishery. In this lake, the abundance of northern pike = 450 mm FL declined from roughly 2,500 fish in 1993 to 500 in 1999. This decline was attributed to a loss of rearing habitat in shallow vegetated littoral areas and prompted the sport fishery to be closed in 2000. In 2007, water was diverted from Rogge Creek to raise the lake level and re-establish northern pike habitat. As of 2012, the population had not rebounded to its numbers in the early 1990s, and the sport-fishery has remained closed. This study will estimate the abundance and length-composition of northern pike = 450 mm FL in Harding Lake using a two-event mark-recapture experiment to determine if, and in what capacity, the sport fishery is ready to be re-opened. The capture and recapture events will take place in June and August 2020.

Book Northern Pike Abundance and Composition Study

Download or read book Northern Pike Abundance and Composition Study written by Richard Peckham and published by . This book was released on 1987 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Abundance and Composition of Northern Pike Populations in Volkmar T and East Twin and Harding Lakes 1993

Download or read book Abundance and Composition of Northern Pike Populations in Volkmar T and East Twin and Harding Lakes 1993 written by Gary A. Pearse and published by . This book was released on 1994 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report on estimates of abundance of northern pike (Esox lucius) in Volkmar, T, East Twin, and Harding lakes in interior Alaska for the spawning season, spring 1993. Multiple capture-recapture events were used to estimate abundance.

Book Stock Assessment of Northern Pike in Harding Lake 2022

Download or read book Stock Assessment of Northern Pike in Harding Lake 2022 written by Matthew Albert and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The abundance of northern pike Esox lucius ≥450 mm fork length (FL) was estimated in Harding Lake during 2022 using a 2-sample mark–recapture experiment for a closed population. The first sampling event occurred 1–3 and 6–10 June and the second occurred 10–12, 16–18, 23, 25, and 30 August. Hook-and-line gear was used exclusively in both events. Estimated abundance of northern pike ≥450 mm FL was 949 (SE = 114; 90% CI = 761–1,137). Northern pike 450–599 mm FL made up 58% (SE = 9%) of the estimated population and fish ≥600 mm FL accounted for 42% (SE = 11%). The water level at Harding Lake has increased over the past 7 years and is currently at the target elevation of 717 ft above sea level. The higher water level has created and improved habitat for northern pike. This abundance estimate demonstrates that the northern pike population is continuing to increase along with the water level.

Book Abundance and Composition of the Northern Pike Population in Minto Lakes 2003

Download or read book Abundance and Composition of the Northern Pike Population in Minto Lakes 2003 written by Brendan P. Scanlon and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abundance and composition of the northern pike, Esox lucius, population within the Minto Lakes study area was estimated using mark-recapture techniques during middle to late July 2003 to determine if estimated harvests within a specified reporting area exceed 20% of the estimated abundance as prescribed in the management plan.