Gulf Sturgeon Migratory Patterns, Habitat Utilization and Aspects of Reproductive Biology in the Choctawhatchee River System, Alabama and Florida PDF Download
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Author: Dewayne Allen Fox
Publisher:
ISBN:
Category : Gulf sturgeon
Languages : en
Pages : 214
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Book Description
Author: Dewayne Allen Fox
Publisher:
ISBN:
Category : Gulf sturgeon
Languages : en
Pages : 214
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 896
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Author:
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 40
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Book Description
The Gulf sturgeon population in the Pearl River was monitored from 1992 through 1996 and compared to historical data sets from the 1960s and 1980s. The estimated population sire iii 1996 was approximately 300 fish with adults comprising about 3 percent of the population. Annual mortality rates in the late 1960s were about 9 percent; these rates increased to almost 40 percent in 1985 and decreased to about 26 percent during 1992 through 1996. Population modeling was used to evaluate the sturgeon's status and recovery potential. Results of models suggest that this population can only withstand mortality rates in the range of 13 to 18 percent, depending upon recruitment assumptions. Population models indicated that catch and fishing effort data specified in the Gulf Sturgeon Recovery Plan may not detect a declining population. Population models can be used to simulate annual variation in population sire under different rates of mortality. Recovery goals can address a specific source of mortality simulated in the model and monitoring can determine the success of recovery efforts. Population modeling does not require considerably more effort or expertise over that already required to conduct monitoring studies.
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 776
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Author: Katherine Marie Fleming
Publisher:
ISBN:
Category : Gulf sturgeon
Languages : en
Pages : 91
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Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 688
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Author: Stephen T. Ross
Publisher:
ISBN:
Category : Fish tagging
Languages : en
Pages : 5
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Author: Stephen T. Ross
Publisher: Univ of California Press
ISBN: 0520249453
Category : Science
Languages : en
Pages : 472
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Book Description
The North American freshwater fish fauna is the most diverse and thoroughly researched temperate fish fauna in the world. Ecology of North American Freshwater Fishes is the only textbook to provide advanced undergraduate and graduate students and researchers with an up-to-date and integrated view of the ecological and evolutionary concepts, principles, and processes involved in the formation and maintenance of this fauna. Ecology of North American Freshwater Fishes provides readers with a broad understanding of why specific species and assemblages occur in particular places. Additionally, the text explores how individuals and species interact with each other and with their environments, how such interactions have been altered by anthropogenic impacts, and the relative success of efforts to restore damaged ecosystems. This book is designed for use in courses related to aquatic and fish ecology, fish biology, ichthyology, and related advanced ecology and conservation courses, and is divided into five sections for ease of use. Chapter summaries, supplemental reading lists, online sources, extensive figures, and color photography are included to guide readers through the material and facilitate student learning. Part 1: Faunal origins, evolution, and diversity Presents a broad pictureÑboth spatially and temporallyÑof the derivation of the fauna, including global and regional geological and climatological processes and their effects on North American fishes. Part 2: Formation, maintenance, and persistence of local populations and assemblages Focuses on how local fish populations and assemblages are formed and how they persist, or not, through time. Part 3: Form and function Deals with the relationship of body form and life history patterns as they are related to ecological functions. Part 4: Interactions among individuals and species Discusses the numerous interactions among individuals and species through communication, competition, predation, mutualism, and facilitation. Part 5: Issues in conservation Focuses on several primary conservation issues such as flow alterations and the increasing biotic homogenization of faunas.
Author: Ryan Jeffrey Heise
Publisher:
ISBN:
Category : Gulf sturgeon
Languages : en
Pages : 240
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Book Description
Author: Ryan Jeffrey Heise
Publisher:
ISBN:
Category : Gulf sturgeon
Languages : en
Pages : 254
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Book Description
