Author: Joshua Adam Israel
Publisher:
ISBN:
Category :
Languages : en
Pages : 270

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Book Description

Author: Webster Van Winkle
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 284

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Book Description
This multi-authored symposium volume addresses the vulnerability and continuing decline of numerous sturgeon species and stocks and the intense efforts to manage and protect them. It presents timely, accessible, and directly applicable biological and ecological research leading to more effective conservation and management of North American salmon. Written by scientists, resource managers, and electric utility industry personnel with a shared interest in sturgeon biology and ecology, management, and protection, this book includes life history characteristics relevant to population dynamics, viability, and persistence; upstream and downstream migratory behavior, habitat requirements and local movement; passage technologies; and conservation management and stock enhancement. Most major sturgeon species in America are covered, including shortnose, Atlantic, Gulf, lake and green sturgeon.

Author: Peter Burton Adams
Publisher:
ISBN:
Category : Green sturgeon
Languages : en
Pages : 116

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Book Description
"In 2001, the National Marine Fisheries Service (NMFS) received a petition requesting Endangered Species Act (ESA) listing of North American green sturgeon (Acipenser medirostris) as a threatened or endangered species. In response to this petition, NMFS announced that it would initiate an ESA status review. The ESA allows the listing of ADistinct Population Segments© (DPSs) of vertebrates as well as named species and subspecies. The combined U. S. Fish and Wildlife Service and NMFS policy on recognition of DPSs outlines two tests to identify separate units: discreteness and significance. A DPS may be considered discrete if it is markedly separate from other populations of the same taxon as a consequence of physical, physiological, ecological, or behavioral factors or if it is delimited by international governmental boundaries. The significance of the population will be decided on the basis of considerations including, but not limited to its persistence, evidence that loss of the DPS would result in a significant gap in spatial structure, evidence of the DPS representing the only surviving natural occurrence of a taxon, or evidence that the DPS differs markedly in its genetic characteristics. Once a DPS has been identified, a risk assessment is preformed to determine whether a listing is warranted for that unit"--Executive Summary.

Author: The Law Library
Publisher: Independently Published
ISBN: 9781793312693
Category :
Languages : en
Pages : 28

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Book Description
The Law Library presents the complete text of the Endangered and Threatened Wildlife and Plants - Threatened Status for Southern Distinct Population Segment of North American Green Sturgeon (US National Oceanic and Atmospheric Administration Regulation) (NOAA) (2018 Edition). Updated as of May 29, 2018 Following completion of a comprehensive Endangered Species Act (ESA) Status Review and Update for the North American green sturgeon (Acipenser medirostris; hereafter, "green sturgeon"), we, NOAA's National Marine Fisheries Service (NMFS), published a Proposed Rule to list the Southern distinct population segment (DPS) of green sturgeon as threatened on April 6, 2005. After considering public comments on the Proposed Rule, we are issuing a Final Rule to list the Southern DPS as a threatened species. NMFS is currently considering issuance of protective regulations that may be necessary and advisable to provide for the conservation of the species. With this document we are also soliciting information that may be relevant to our analysis of protective regulations and to the designation of critical habitat for the Southern DPS of green sturgeon. Details of our analyses, their outcome, and a request for public comment on our proposals will be published in subsequent Federal Register notices. This ebook contains: - The complete text of the Endangered and Threatened Wildlife and Plants - Threatened Status for Southern Distinct Population Segment of North American Green Sturgeon (US National Oceanic and Atmospheric Administration Regulation) (NOAA) (2018 Edition) - A dynamic table of content linking to each section - A table of contents in introduction presenting a general overview of the structure

Author: G.T.O LeBreton
Publisher: Springer Science & Business Media
ISBN: 1402028334
Category : Science
Languages : en
Pages : 336

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Book Description
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.

Author: Vadim J. Birstein
Publisher: Springer Science & Business Media
ISBN: 0306468549
Category : Science
Languages : en
Pages : 444

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Book Description
Selected, reviewed and revised papers from the International Conference on Sturgeon Biodiversity and Conservation held at The American Museum of Natural History in New York on 28-30 July 1994

Author: Ramón Carmona
Publisher: Springer Science & Business Media
ISBN: 1402084374
Category : Science
Languages : en
Pages : 465

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Book Description
Sturgeons are considered “living fossils”, sharing many morphological and biological features with ancestral fish. Furthermore, sturgeons are of the utmost interest from an economic perspective, not only for the caviar but for the flesh. However, the wild populations of the majority of the species are at serious risk of extinction all over the world. So, it is urgent to develop strategies for both farming culture and conservation and recovery in natural habitats. This book provides a comprehensive view of the biology and sustainable development of sturgeons putting emphasis on the Southern Europe autochthonous species such as Acipenser nacarii and Acipenser sturio that share geographical distribution. Other relevant species (such as Huso huso, A. oxyrhinchus, A. ruthenus, A. stellatus) and areas (Germany, Russia, North America) are also considered. The contents are organised in three sections: Taxonomy and Biogeography (including the morphological and genetic analyses that clarify the taxonomy and phylogeny of sturgeons, focused on those from Southern Europe), Biology and Aquaculture (where several aspects of the developmental biology, feeding, and reproduction are considered in relation to the improvement of sturgeon farming), and Recovery and Conservation (that collates and analyses different recovery research actions, the ecology of the rivers for restoration as well as the problems related to the trade of caviar).

Author:
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 81

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Book Description

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 848

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Book Description

Author: Shawna Leigh Kjartanson
Publisher:
ISBN: 9780494599983
Category : Lake sturgeon
Languages : en
Pages : 276

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Book Description
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.