Download or read book Alberta s Lake Sturgeon Management Plan written by David K. Berry and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alberta s lake sturgeon management plan written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alberta Lake Sturgeon Recovery Plan 2011 2016 written by Alberta Lake Sturgeon Recovery Team and published by . This book was released on 2012 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atlas of Alberta Lakes written by Patricia Mitchell and published by University of Alberta. This book was released on 1990 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation of data on 100 lakes in Alberta (outside the mountain areas) covers physical characteristics, water quality, wildlife, recreational opportunities and access for each lake, and includes maps, photographs, diagrams and statistical tables.

Download or read book Management of Lake Sturgeon Acipenser Fulvescens Sport Fisheries in Alberta written by R L & L Environmental Services and published by . This book was released on 1994 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sturgeons and Paddlefish of North America written by G.T.O LeBreton and published by Springer Science & Business Media. This book was released on 2004-10-18 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern North American sturgeons and paddlefish are the result of 100 million years of evolution. Once an integral part of aboriginal culture, their numbers were decimated by overfishing and habitat destruction during the past two centuries. This book details the extensive science aimed at helping these remarkable species recover from the brink of extinction, and describes the historical, biological, and ecological importance of North American sturgeon and paddlefish. The text is enhanced by photographs and detailed line drawings. This comprehensive volume will be an invaluable resource for researchers, educators, and consultants, in academic and government settings, who work to further scientific understanding of these fishes. No other single compilation has documented current information in such detail.

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 General Technical Report INT written by and published by . This book was released on 1986 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Wisconsin s Lake Sturgeon Management Plan written by and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Caviar and Conservation written by Douglas F. Williamson and published by . This book was released on 2003 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Regulatory Options for the Commercial Rearing of Lake Sturgeon written by Wisconsin. Department of Agriculture, Trade, and Consumer Protection and published by . This book was released on 2000 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Life History Habitat and Distribution of the Lake Sturgeon Acipenser Fulvescens in the South Saskatchewan River Alberta written by Gordon Neal Haugen and published by Fish and Wildlife Division, Department of Lands and Forests. This book was released on 1969 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings Conifer Tree Seed in the Inland Mountain West Symposium Missoula Montana August 5 6 1985 written by and published by . This book was released on 1986 with total page 914 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status of the Lake Sturgeon Acipenser Fulvescens in Alberta written by Earle, Suzanne (Suzanne N.) and published by . This book was released on 2002 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management Plan for the Green Sturgeon Acipenser Medirostris in Canada written by and published by . This book was released on 2017 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Green Sturgeon (Acipenser medirostris) is an anadromous fish that was originally assessed in November 2004 as 'special concern' by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC), and recently reassessed under the same status in November 2013. Green Sturgeon was listed as a species of Special Concern under the Species at Risk Act (SARA) in September 2006 and is currently listed as such. The management objective for the Green Sturgeon is to maintain their distribution and abundance at existing levels or higher in Canadian waters by limiting threats to the species within Canadian waters. The Management Plan recommends an approach to conservation that assumes Green Sturgeon populations have the potential to recover. Although it is generally recognized that the primary threat to the species is the destruction of spawning habitat which is found outside of Canada, the threat of mortality through incidental fisheries catch in Canadian waters has the potential to compromise the management objective. Broad strategies and conservation measures have been identified in this Plan to support the management objective. Implementation of this Management Plan is subject to appropriations, priorities, and budgetary constraints of the participating jurisdictions and organizations"--Executive summary, p. iii.

Download or read book Lake Sturgeon Acipenser Fulvescens written by Alberta. Alberta Environmental Protection. Natural Resources Service and published by . This book was released on 1998 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: