A Conceptual Life-History Model for Pallid and Shovelnose Sturgeon PDF Download
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Author: Mark Lee Wildhaber
Publisher: Geological Survey (USGS)
ISBN: 9781411319059
Category : Shovelnose sturgeon
Languages : en
Pages : 18
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Book Description
Author: Mark Lee Wildhaber
Publisher: Geological Survey (USGS)
ISBN: 9781411319059
Category : Shovelnose sturgeon
Languages : en
Pages : 18
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Pallid sturgeon
Languages : en
Pages : 18
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Book Description
Intensive management of the Missouri and Mississippi Rivers has resulted in dramatic physical changes to these rivers. These changes have been implicated as causative agents in the decline of pallid sturgeon. The pallid sturgeon, federally listed as endangered, is endemic to the turbid waters of the Missouri River and the Lower Mississippi River. The sympatric shovelnose sturgeon historically was more common and widespread than the pallid sturgeon. Habitat alteration, river regulation, pollution, and over-harvest have resulted in the now predictable patterns of decline and localized extirpation of sturgeon across species and geographic areas. Symptomatic of this generalized pattern of decline is poor reproductive success, and low or no recruitment of wild juveniles to the adult population. The purpose of this report is to introduce a conceptual life-history model of the factors that affect reproduction, growth, and survival of shovelnose and pallid sturgeons. The conceptual model provided here was developed to organize the understanding about the complex life history of Scaphirhynchus sturgeons. It was designed to be used for communication, planning, and to provide the structure for a population-forecasting model. These models are intended to be dynamic and responsive to new information and changes in river management, thereby providing scientists, stakeholders, and managers with ways to improve understanding of the effects of management actions on the ecological requirements of Scaphirhynchus sturgeons. As new scientific knowledge becomes available, it could be included in the model in many ways at various integration levels.
Author: Carl E. Korschgen
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 279
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Book Description
Author: Catherine J. Henry
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 0
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Book Description
Author: Robert Jason DeVries
Publisher:
ISBN:
Category :
Languages : en
Pages : 161
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Book Description
Author: D. P. Swain
Publisher:
ISBN:
Category : Shovelnose sturgeon
Languages : en
Pages : 36
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Book Description
Author: Paul L. Zweiacker
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 92
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Book Description
Author:
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 560
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Book Description
Author: Anne Elizabeth Tews
Publisher:
ISBN:
Category : Pallid sturgeons
Languages : en
Pages : 87
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309209676
Category : Science
Languages : en
Pages : 164
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Book Description
Historically, the flow of sediment in the Missouri River has been as important as the flow of water for a variety of river functions. The sediment has helped form a dynamic network of islands, sandbars, and floodplains, and provided habitats for native species. Further downstream, sediment transported by the Missouri and Mississippi Rivers has helped build and sustain the coastal wetlands of the Mississippi River delta. The construction of dams and river bank control structures on the Missouri River and its tributaries, however, has markedly reduced the volume of sediment transported by the river. These projects have had several ecological impacts, most notably on some native fish and bird species that depended on habitats and landforms created by sediment flow. Missouri River Planning describes the historic role of sediment in the Missouri River, evaluates current habitat restoration strategies, and discusses possible sediment management alternatives. The book finds that a better understanding of the processes of sediment transport, erosion, and deposition in the Missouri River will be useful in furthering river management objectives, such as protection of endangered species and development of water quality standards.
