Author: Amadeo S. TimbolPublisher:
ISBN:
Category : Freshwater animals
Languages : en
Pages : 176
Book Description
Stream Channel Modification in Hawaii: Timal, A. A. Statewide inventory of streams, habitat factors and associated biota
Author: Amadeo S. TimbolPublisher:
ISBN:
Category : Freshwater animals
Languages : en
Pages : 176
Book Description
Stream Channel Modification in Hawaii: Timal, A. A. Statewide inventory of streams, habitat factors and associated biota
Author: Amadeo S. TimbolPublisher:
ISBN:
Category : Freshwater animals
Languages : en
Pages : 174
Book Description
Stream Channel Modification in Hawaii: Timbol, A.A. Statewide inventory of streams, habitat factors and associated biota
Author: Amadeo S. TimbolPublisher:
ISBN:
Category : Freshwater animals
Languages : en
Pages : 0
Book Description
Statewide Inventory of Streams, Habitat Factors and Associated Biota
Author: Amadeo S. TimbolSpatially Linking Basinwide Stream Inventories to Arcs Representing Streams in a Geographic Information System
Author: Michael A. RadkoPublisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 28
Book Description
A Guide to Stream Habitat Analysis Using the Instream Flow Incremental Methodology
Author: Ken D. BoveePublisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 276
Book Description
STREAMS: their dynamics and morphology
Author: Marie MorisawaThe Effects of Channel Modification on Characteristics of Streams During Low Flow
Author: Brett AtkinsonPublisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 268
Book Description
Fluorescent dye was used to assess summer low flow hydraulic retention and transient storage (dead zone) associated with fish habitat structures at Camp Creek, Drift Creek, and the East Fork of Lobster Creek within the central Coast Range of Oregon. Utilizing channel units to stratify stream reaches, the effect of instream structures upon the hydraulic retention of pools was evaluated. The cycling time of water into and out of storage was also estimated by calculating an exchange coefficient. Camp creek had a pre- and post-treatment design that included unaltered, low, medium, and high levels of coarse woody debris loading. Except for one Camp Creek channel unit (CC21), major alterations to low flow channel unit dimensions did not occur after treatment and the volume of water in transient storage in the other treated channel units was probably not altered. Intensive debris loading increased the length of channel unit CC21 by 6 meters and the average cross-sectional depth by 0.04 meters. An "additional sums of squares" test was used to evaluate whether there was a statistically significant difference existing between Camp Creek pre- and posttreatment simple linear regressions of transit time versus debris loading and the average cross-sectional area, depth, width, and velocity. The additional sums of squares comparison did show that an increase in posttreatment transit time was statistically significant (p 0.10) when compared against debris additions that were located within the low flow wetted perimeter of the stream (wood influence Zone I). Statistically significant (p 0.10) results for dye plume and geomorphic variables for Drift Creek and Lobster Creek are not presented as major conclusions because of a lack of pretreatment control data. Qualitatively, however, one-tailed t-test indicate that during summer discharges, flow velocities and peak concentrations may significantly decrease in treated channel units, compared to the channel units that were assumed to be controls. Intensive debris loading may enhance low flow channel complexity by increasing turbulent mixing and increasing the transit time of water. However, in this study the largest amount of debris volume was located in the cross-section of channel existing between low flow and bankfull flow (wood influence Zone II). Thus, hydraulic interaction with debris primarily occurs during winter flows and storm flows when streampower is at its highest.
Inventory of Amount, Type and Location of Channel Alterations
Author: Richard A. IrizarryPublisher:
ISBN:
Category : Fishes
Languages : en
Pages : 24
Book Description
The Ecology of Freshwater Molluscs
Author: Robert T. DillonPublisher: Cambridge University Press
ISBN: 1139426990
Category : Science
Languages : en
Pages : 523
Book Description
All aspects of the ecology of freshwater molluscs are discussed in this unique volume. Extensively referenced and providing a synthesis of work from the nineteenth century onwards, this book will appeal to professional ecologists, evolutionary biologists and parasitologists interested in these diverse invertebrates.