Author: Matthew Earl HerbertPublisher:
ISBN:
Category :
Languages : en
Pages : 134
Book Description
Fish Assemblage Structure Along Environmental Gradients in a Coastal Plain Drainage
Author: Matthew Earl HerbertPublisher:
ISBN:
Category :
Languages : en
Pages : 134
Book Description
Effects of Landuse on Fish Assemblage Structure in Coastal Plain Blackwater Streams
Author: Lowell D. BallardAssessing the Sustainability and Biological Integrity of Water Resources Using Fish Communities
Author: Thomas P. SimonPublisher: CRC Press
ISBN: 1000141381
Category : Science
Languages : en
Pages : 700
Book Description
This book examines the application of fish community characteristics to evaluate the sustainability and biological integrity of freshwaters. Topics include perspectives on use of fish communities as environmental indicators in program development, collaboration, and partnership forming; influence of specific taxa on assessment of the IBI; regional applications for areas where the IBI had not previously been developed; and specific applications of the IBI developed for coldwater streams, inland lakes, Great Lakes, reservoirs, and tailwaters.
Patterns in Functional Structure and Diversity of Stream Fish Assemblages Related to Environmental Factors at Multiple Scales
Author: Allison Ann PeasePublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The distribution and abundance of stream fishes are influenced by many factors operating at multiple scales. Understanding how environmental variables influence the structure of stream fish assemblages is important for habitat assessment, stream restoration, and for predicting responses to environmental change. An emerging view in community ecology is that a focus on the functional structure of species assemblages in relation to environmental gradients may reveal more general patterns applicable across geographic regions. In this study, I used functional traits related to the trophic ecology, habitat use, and life-history strategies of fishes to examine the influences of environmental factors on stream fish assemblages. The research was carried out in two large regions: the Río Grijalva basin in southern Mexico and the Brazos and Trinity basins in Central Texas. In both regions, relationships between functional structure of stream fish assemblages and environmental factors at local, landscape, and regional scales were examined. Environmental characteristics at all three scales influenced the functional attributes of assemblages studied here. At the local reach scale, stream size, substrate characteristics, the availability of riffle and pool habitats, and abundance of in-stream cover structures were related to the functional trait composition of fish assemblages in the Río Grijalva Basin and in Central Texas streams. Landscape features most strongly related to functional structure in both regions were the extent of forested area in the watershed and the amount of land developed for urban and agricultural uses. At the regional scale, broad physiographic differences between ecoregions had a large influence on the taxonomic and functional composition of stream fish assemblages in Central Texas. Along the broad-scale longitudinal fluvial gradient of the Grijalva region, pronounced changes in the species composition, functional trait diversity, and trophic structure of fish assemblages were observed.
Master's Theses Directories
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 420
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Relation of Environmental Characteristics to the Composition of Aquatic Assemblages Along a Gradient of Urban Land Use in New Jersey, 1996-98
Author: Jonathan G. KennenPublisher:
ISBN:
Category : Aquatic ecology
Languages : en
Pages : 94
Book Description
Assessing the Ecological Integrity of Running Waters
Author: M. JungwirthPublisher: Springer Science & Business Media
ISBN: 9401141649
Category : Technology & Engineering
Languages : en
Pages : 491
Book Description
The assessment of the ecological integrity of running waters is a prerequisite to an understanding of the effects of human alterations. The evaluation of degradation processes provides key information on how to avoid further negative impacts. The success of future conservation, mitigation and restoration activities will rely on sound assessment methodologies and their ecological relevance and applicability. Assessment methodologies are therefore an integral part of sustainable river management. This book synthesizes and discusses state-of-the-art experiences in assessment methodologies. Including the latest knowledge on structures, processes and functions of running waters as a fundamental basis for developing adequate assessment methods, the book focuses on method development, application, and in particular on integrated assessment methods. This book is directed at scientists and managers with the aim of more effective preservation, restoration and maintenance of the ecological integrity of running water ecosystems.
Author: 
Author: 
Author: F. Schiemer