Download or read book Proceedings of the Regional Peer Review on the Recovery Potential Assessment Lake Sturgeon Acipenser Fulvescens Designatable Units 1 Western Hudson Bay Populations and 2 Saskatchewan Nelson River Populations written by and published by . This book was released on 2021 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information in Support of a Recovery Potential Assessment of Lake Sturgeon Acipenser Fulvescens Western Hudson Bay Saskatchewan Nelson River and Great Lakes Upper St Lawrence Populations written by C.D. Lacho and published by . This book was released on 2021 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Zonal Peer Review on the Recovery Potential Assessment Lake Sturgeon Acipenser Fulvescens Designatable Unit 4 Great Lakes Upper St Lawrence Populations written by and published by . This book was released on 2021 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book COSEWIC Assessment and Status Report on the Lake Sturgeon Acipenser Fulvescens Western Hudson Bay Populations Saskatchewan Nelson River Populations Southern Hudson Bay James Bay Populations Great Lakes Upper St Lawrence Populations in Canada written by and published by . This book was released on 2017 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Potential Assessment of Lake Sturgeon written by Thomas Christopher Pratt and published by . This book was released on 2010 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Regional Peer Review of the Pre COSEWIC Assessment for Lake Sturgeon Designatable Units 1 6 written by Kathleen Ann Martin and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Regional Peer Review of the Pre COSEWIC Assessment for Lake Sturgeon Designatable Units 1 6 written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In November 2006, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) assessed the eight Designatable Units (DUs) of Lake Sturgeon (Acipenser fulvescens) in Canada. COSEWIC is required under the Species at Risk Act (SARA) to review the classification of each species at least every 10 years. As a result Lake Sturgeon was included on COSEWIC's fall 2014 Call for Bids to produce a status report. COSEWIC plans to re-assess Lake Sturgeon in April 2017. Fisheries and Oceans Canada (DFO) held a regional peer review meeting to review information relevant to COSEWIC's status assessment for Lake Sturgeon, DUs 1-6 on October 27-29, 2015. Meeting participants included DFO (Science and Species at Risk programs), University of Manitoba, Manitoba Hydro, SaskPower, Ontario Power Generation Inc., Laval University, Ontario Ministry of Natural Resources and Forestry, Minnesota Department of Natural Resources, Saskatchewan Ministry of Environment, Manitoba Conservation and Water Stewardship, Alberta Environment and Parks, Saskatchewan Water Security Agency, Carleton University, West Virginia University and the three COSEWIC report co-authors. This Proceedings summarizes the relevant meeting discussions and conclusions from this pre-COSEWIC assessment.
Download or read book Proceedings of the Zonal Peer Review of the Pre COSEWIC Assessment for Lake Sturgeon Acipenser Fulvescens Designatable Units 7 8 in Canada written by Kathleen Ann Martin and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Pacific Regional Peer Review on Recovery Potential Assessment White Sturgeon Upper Fraser Designatable Unit written by T. W. Therriault and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Zonal Peer Review of the Pre COSEWIC Assessment for Lake Sturgeon Acipenser Fulvescens Designatable Units 7 8 in Canada written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In November 2006, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) assessed the eight Designatable Units (DUs) of Lake Sturgeon (Acipenser fulvescens) in Canada. COSEWIC is required under the Species at Risk Act (SARA) to review the classification of each species at least every 10 years. As a result Lake Sturgeon was included on COSEWIC's fall 2014 Call for Bids to produce a status report. COSEWIC plans to re-assess Lake Sturgeon in April 2017. Fisheries and Oceans Canada (DFO) held a regional peer review meeting to review information relevant to COSEWIC's status assessment for Lake Sturgeon, DUs 7-8 on November 3-4, 2015. Meeting participants included DFO (Science, and Species at Risk programs), Anishinabek/Ontario Fisheries Resources Centre, Concordia University, U.S. Fish and Wildlife, Ontario Ministry of Natural Resources and Forestry, Hydro-Québec, Ministère des Forêts, de la faune et des Parcs du Québec, Ontario Power Generation Inc, Environnement et Terre Odanak and PDG EnviroScience et Faune Inc., Kitigan Zibi Anishinabeg, and the three COSEWIC report co-authors. This Proceedings summarizes the relevant meeting discussions and conclusions from this pre-COSEWIC assessment.
Download or read book Recovery Potential Assessment for Lake Sturgeon Acipenser Fulvescens in Canadian Designatable Units written by Luis A. Vélez-Espino and published by . This book was released on 2008 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Potential Assessment of Lake Sturgeon written by Thomas Christopher Pratt and published by . This book was released on 2010 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Potential Assessment of Lake Sturgeon written by Thomas Christopher Pratt and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustaining the Recovery of Lake Sturgeon Acipenser Fulvescens in the North Saskatchewan River of Alberta written by Owen B. Watkins and published by . This book was released on 2016 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly all Lake Sturgeon (Acipenser fulvescens) populations across North America have experienced losses to historic abundances estimated to be > 99%. This species is especially vulnerable to overharvest, habitat degradation, river fragmentation from dams, and is slow to recover due to life history characteristics. In the Alberta section of the North Saskatchewan River, Canada, passive management strategies led to overharvest, and combined with poor water quality, contributed to the collapse of the Lake Sturgeon population circa 1940. However, improved water quality beginning in the 1960s, along with the implementation of a zero-harvest regulation in 1997 prompted a Lake Sturgeon population recovery. Lake Sturgeon population viability remained questionable with low population abundance with particularly few adult fish, complicated by industrial development, and an increasing human population. Furthermore, the North Saskatchewan River has a popular multi-species sport fishery, complicating Lake Sturgeon management and recovery. My objective is to determine whether the status of the Lake Sturgeon population in the North Saskatchewan River in Alberta is declining, improving or remaining the same. To address this objective I required knowledge of Lake Sturgeon life history and sources of mortality. More specifically, I investigated: 1) population metrics for a status assessment, 2) a resource selection function for identification of important habitat using inputs from telemetry and land classification data, 3) defining technological limitations of telemetry information and 4) an assessment of current rates of angling mortality and management options for Lake Sturgeon recovery. I found that both recruitment and adult abundance had increased in the most recent years (2008 to 2012), even though the total mortality rate was higher than the 7% threshold proposed by the Alberta Lake Sturgeon Recovery Team. However, a high rate of somatic growth implies that abundance in the North Saskatchewan River is still below carrying capacity. Telemetry of 58 Lake Sturgeon over a 38-month period suggested that the population used the entire section of the North Saskatchewan River downstream from Drayton Valley, Alberta to the Alberta-Saskatchewan border. Additionally, some fish moved exceptional distances (> 925 rkm) between Alberta and Saskatchewan, illustrating the importance of river connectivity. Landscape classifications adjacent to the river were ineffective predictors of Lake Sturgeon congregations. There was a difference in habitat selection by males and females, with females found further downstream, but occupying similar slope gradients as the males. Small-scale details of habitat selection could not be investigated because of the technical limitations of existing telemetry technology. I found that radio telemetry detections from an aircraft were dependent upon transmitter type, water depth, receiver altitude, and scanning time. Larger transmitters were detected from a greater distance than smaller transmitters and the probability of detection was highest at a receiver altitude of 300 m when the two transmitter types were at a depth of 1 m. Furthermore, my relocations of the two transmitter types based upon maximum signal strength had a precision of ± 177 m distance for all depths and receiver altitudes from the actual transmitter location. I provide six probability of detection models for researchers to quantify their telemetry equipment. For investigating recovery management options, I used a theoretical objective of having a total population of 5,000 Lake Sturgeon, with an occasional fish surviving to 100-years. This requires total mortality to be approximately 5%, although my current estimate of total mortality is approximately 9.4%. To achieve my population objective, mortality must be significantly reduced. Estimates from catch and release fishing by three angler groups (non-specific anglers, anglers targeting sturgeon and research anglers) suggests that sport angling and its associated incidental mortality results in fewer than 18 dead Lake Sturgeon annually and further restrictions on sport angling are currently unnecessary. My only remaining management option to improve Lake Sturgeon survival is through habitat protection. My telemetry data suggested 10 primary locations of Lake Sturgeon congregations. Existing provincial regulations (Class 'A' watercourse designations) currently protect approximately 30% of these congregation sites. To protect at least 75% of these areas, I propose 10 new Class 'A' extents that reduce the total area of current Class 'A' protection (from 64 to 58 river km), which provides an improved means for protecting Lake Sturgeon and habitat.
Download or read book Population Structure and Genetic Diversity of Lake Sturgeon Acipenser Fulvescens in Canada written by Shawna Leigh Kjartanson and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lake sturgeon (Acipenser fulvescens), is a species with considerable ecological, social and economic value. Unfortunately, over-exploitation and habitat alteration have led to the collapse of lake sturgeon fisheries across North America. Based on conservation concerns, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) identified eight designatable units (DUs) among Canadian populations of lake sturgeon using the limited information available. These DUs are intended to represent taxonomically, genetically, geographically, or biogeographically distinct units below the species level. In this study, the genetic structuring among 20 lake sturgeon localities was examined using nine microsatellite loci. Lake sturgeon localities conformed to hierarchical partitioning of genetic diversity, with the greatest genetic divergence between localities in the Great Lakes and Hudson Bay drainages. Finally, minimal divergences among the current DUs warrant adjustment of lake sturgeon DU boundaries, to more appropriately reflect the distribution of genetic differentiation among lake sturgeon localities.
Download or read book Survey of the Lake Sturgeon Acipenser Fulvescens Fishery on the South Saskatchewan River Alberta written by L. A. Winkel and published by Alberta Sustainable Resource Development, Fisheries & Wildlife Management Division, Resource Status and Assessment Branch. This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery Potential Assessment of Lake Sturgeon written by Thomas Christopher Pratt and published by . This book was released on 2010 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
