Author:
Publisher:
ISBN: 9780660081793
Category :
Languages : en
Pages : 1

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Author: Andre-Marcel Baril
Publisher:
ISBN:
Category :
Languages : en
Pages : 101

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The loss of spawning habitat has been identified as a limiting factor for population growth of lake sturgeon, Acipenser fulvescens, a species that is endangered or threatened throughout its range. Hence, the restoration of spawning habitat has become a common practice, with at least 17 projects completed in the last 20 years. One project on the Ouareau River in Quebec entailed the installation of three artificial spawning reefs and two sills to address a landslide, headward erosion and dam activity. Our study adopted an adaptive management framework that incorporated 3D hydrodynamic modeling and a habitat suitability index to assess the performance of the sills and the success of the restoration project. We first compiled data from 48 sites across the range of the species to produce univariate habitat suitability indices to describe the spawning niche. Peak suitability occurred at depth-averaged velocities of 0.6 m·s-1, depths of 0.55 – 0.85 m in small rivers (100 m3·s-1 annual average discharge) and 0.75 – 5.25 m in large rivers (100 m3·s-1), over cobble substrates (64 – 256 mm) and water temperatures of 13.8 – 14.3 °C. To assess the quantity of suitable habitat, univariate habitat suitability results were compiled into a multivariate suitability index using a fuzzy weighted linear combination, and applied to the 3D hydrodynamic model of the Ouareau spawning area. Our model indicated an abundance of suitable habitat and that the artificial spawning sites were placed in poor locations (velocity at sites > spawning requirements). By simulating river conditions prior to sill construction using the 3D hydrodynamic model, we found that the sills only have a minimal effect on the site, including no significant effect on the water surface longitudinal profile or depth averaged current velocity. Using the adaptive management framework, we identified flaws in the restoration project, related to the pre-assessment process, restoration design and evaluation, and hypothesis development. These results fill a knowledge gap by quantifying the reproductive niche of lake sturgeon, and identifying the need for multi-disciplinary insight in habitat restoration projects.

Author: James Andrew Crossman
Publisher:
ISBN:
Category : Fish stocking
Languages : en
Pages : 388

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Author: Société de la faune et des parcs du Québec. Direction de l'aménagement de la faune de Montréal, de Laval et de la Montérégie
Publisher: [Québec] : Société de la faune et des parcs du Québec, Direction de l'aménagement de la faune de Montréal, de Laval et de la Montérégie
ISBN: 9782550414117
Category :
Languages : en
Pages : 43

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Author: Julie Koppel Maldonado
Publisher: Springer
ISBN: 3319052667
Category : Science
Languages : en
Pages : 178

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With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.

Author: California. Dept. of Water Resources
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 120

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Author: Kevin L. Kapuscinski
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 716

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Author: Richard Beamish
Publisher: Cambridge Scholars Publishing
ISBN: 1443892408
Category : Science
Languages : en
Pages : 374

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Hagfishes and lampreys, both examples of jawless fishes, are elongated, eel-like animals lacking paired fins, and are the only living representatives of ancient creatures that gave rise to current species of fish and, eventually, humans. This volume provides an overview of the current status of knowledge on a variety of topics related to jawless fishes, including their taxonomy, zoogeography, phylogeny, molecular biology, evolution, life history, role in the ecosystem, and fisheries and management of hagfishes and lampreys worldwide. This is the first book dealing exclusively with the various aspects of jawless fish species throughout the world. It brings together a number of papers providing new data on jawless fishes, and offers readers a range of useful information within a single reference, reflecting the growing appreciation for hagfishes and lampreys worldwide.

Author: Walter Koelz
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 382

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Author: Richard W. Langdon
Publisher:
ISBN: 9780977251711
Category : Freshwater fishes
Languages : en
Pages : 320

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