東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Mitigation measures for barriers to ...

Ficke, Ashley D.

FindBook

Google Book

Amazon

博客來

Mitigation measures for barriers to Great Plains fish migration.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Mitigation measures for barriers to Great Plains fish migration./
作者:	Ficke, Ashley D.
面頁冊數:	212 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
Contained By:	Dissertation Abstracts International76-10B(E).
標題:	Aquatic sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3706351
ISBN:	9781321800906

Mitigation measures for barriers to Great Plains fish migration.
Ficke, Ashley D.

Mitigation measures for barriers to Great Plains fish migration. - 212 p.

Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.

Thesis (Ph.D.)--Colorado State University, 2015.

The harsh, fluctuating environments of Great Plains streams present unique challenges to aquatic life. Great Plains streams historically supported a fish assemblage that was adapted to survive conditions such as high variability in flow and physicochemical characteristics and frequent changes in physical habitat. Despite the resistance and resilience of these fish species to the harsh conditions of Great Plains streams, many populations have declined in the face of human modifications that include changes in water chemistry, flow regulation, and fragmentation. Fragmentation, or the breaking of a continuous habitat into isolated segments, is a pervasive problem in Great Plains streams, and its reversal is essential to the conservation of Great Plains fishes. Although fragmentation is best reversed by removing structures that prevent fish movement, many of these structures are unlikely to be removed because of the benefits they provide to society. In these instances, fishways or fish ladders are also a viable option for ameliorating fragmentation. However, few recommendations exist for fishway design for small-bodied fishes, especially those of the Great Plains. Although the number of studies focusing on smaller fishes has increased in recent years, most fishway design recommendations are appropriate for salmonids or other large, economically important species such as clupeids.

ISBN: 9781321800906Subjects--Topical Terms:

3174300
Aquatic sciences.

Mitigation measures for barriers to Great Plains fish migration.
LDR:06114nmm a2200325 4500 001 2074801
005 20161020134846.5
008 170521s2015 ||||||||||||||||| ||eng d
020 $a 9781321800906
035 $a (MiAaPQ)AAI3706351
035 $a AAI3706351
040 $a MiAaPQ $c MiAaPQ
100 1 $a Ficke, Ashley D. $3 3190151
245 1 0 $a Mitigation measures for barriers to Great Plains fish migration.
300 $a 212 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-10(E), Section: B.
500 $a Adviser: Christopher Myrick.
502 $a Thesis (Ph.D.)--Colorado State University, 2015.
520 $a The harsh, fluctuating environments of Great Plains streams present unique challenges to aquatic life. Great Plains streams historically supported a fish assemblage that was adapted to survive conditions such as high variability in flow and physicochemical characteristics and frequent changes in physical habitat. Despite the resistance and resilience of these fish species to the harsh conditions of Great Plains streams, many populations have declined in the face of human modifications that include changes in water chemistry, flow regulation, and fragmentation. Fragmentation, or the breaking of a continuous habitat into isolated segments, is a pervasive problem in Great Plains streams, and its reversal is essential to the conservation of Great Plains fishes. Although fragmentation is best reversed by removing structures that prevent fish movement, many of these structures are unlikely to be removed because of the benefits they provide to society. In these instances, fishways or fish ladders are also a viable option for ameliorating fragmentation. However, few recommendations exist for fishway design for small-bodied fishes, especially those of the Great Plains. Although the number of studies focusing on smaller fishes has increased in recent years, most fishway design recommendations are appropriate for salmonids or other large, economically important species such as clupeids.
520 $a The goal of this dissertation is to advance the science of fishway design for small-bodied, nonsalmonid fishes by reviewing existing information on small Great Plains fish swimming performance, developing a predictive swimming model for small Great Plains fishes, advancing rock ramp fishway design knowledge by evaluating the effects of substrate arrangement on fish passage success, and evaluating fish passage success at two existing rock ramps in a Colorado stream.
520 $a The goal of the predictive swimming model study was to predict swimming performance of untested Great Plains fishes, because directly testing swimming performance of all species would be time-consuming and expensive. Species-specific swimming performance data are essential to effective fishway design, but these data are lacking for most small-bodied fishes of the North American Great Plains. Models of maximum aerobic and sprint swimming ability were parameterized with 15 Great Plains species. Swimming abilities were measured in swimming flumes, and nine morphological and physiological variables were used as predictors. Random forest (RF) analyses were used in model construction because of their superior predictive power to regression models.
520 $a The goal of the rock ramp study was to estimate fish passage success over two substrate arrangements that produced different hydraulic conditions. Substrate arrangement on rock ramp fishways may affect passage success of small-bodied fishes, but few studies have been conducted to explore this. To help develop recommendations, a small model fishway (slope = 3%, flow = 0.026 m3/s) was constructed with two different substrate treatments: closely-spaced cobbles and widely-spaced cobbles. Hydraulic conditions were measured with an acoustic Doppler velocimeter, and passage success of three small-bodied fishes (longnose sucker Catostomus catostomus, longnose dace Rhinichthys cataractae, and johnny darter Etheostoma nigrum ) were tested in 22-hour trials.
520 $a The field evaluation of two rock ramps was designed to advance the new science of designing rock ramp fishways for entire fish assemblages. Knowledge gained from field evaluations of existing fishway performance can greatly improve design, but these evaluations are rare, especially in systems without anadromous species. The movement of medium- and large-bodied fishes (TL > 100 mm) across rock ramps can be effectively measured with PIT tags. The goal of this study was to compare passage rates of PIT-tagged fishes across two structurally different fishways, one with a confined low-flow notch and a 4.5% slope and another that spanned the width of the river and had an 11.2% slope. Movement across the fishways was compared to movement at a single control site. Seven longnose dace Rhinichthys cataractae, 149 longnose sucker Catostomus catostomus, 368 brown trout Salmo trutta, and 527 rainbow trout Oncorhynchus mykiss were tagged, and their movements past three sets of paired PIT tag antenna arrays were tracked in a 1-km section of a small Colorado stream for 14 months. Antenna detection data that recorded fish movements were analyzed with a multi-state model in Program MARK, which generates transition probabilities and allows hypothesis testing. Model selection results indicated that fish were less likely to move across the steep fishway than the one with a lower slope and less likely to move longer distances (i.e., across more than one fishway/control site). These results, in combination with results from a small number of similar studies, provide more support that slopes of 5% or less increase passage rates of a wide variety of species and that fishway design specifications should be tailored to the resident fish assemblage. (Abstract shortened by UMI.).
590 $a School code: 0053.
650 4 $a Aquatic sciences. $3 3174300
650 4 $a Ecology. $3 516476
690 $a 0792
690 $a 0329
710 2 $a Colorado State University. $b Fish, Wildlife, and Conservation Biology. $3 3190086
773 0 $t Dissertation Abstracts International $g 76-10B(E).
790 $a 0053
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3706351