1 |
Improving instream flow protection in the West : an evaluation of strategies with an analysis of Oregon's program /Root, Ann L. January 1993 (has links)
Thesis (Ph. D.)--Oregon State University, 1993. / Typescript (photocopy). Includes bibliographical references (leaves 155-173). Also available via the World Wide Web.
|
2 |
Influence of fluvial geomorphology on fish assemblage structure within an agriculturally impacted watershed /Fore, Jeffrey D., January 2008 (has links) (PDF)
Thesis (M.S.)--Eastern Illinois University, 2008. / Includes bibliographical references (leaves 25-30).
|
3 |
An analysis of the costs involved in making a stream pollution survey /Jones, David Albert, January 1955 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute, 1955. / Vita. Includes bibliographical references (leaves 35-37). Also available via the Internet.
|
4 |
Developing eligibility criteria for daylighting streams as applied to Dallas' Mill CreekKoshaley, Deepa Harkishore. January 2008 (has links)
Thesis (M.L.A) -- University of Texas at Arlington, 2008.
|
5 |
A comparison of the ecological integrity of headwater streams draining harvested and un-harvested watersheds in the western mountains of Maine, U.S.A. /Siegel, Darlene. January 2003 (has links) (PDF)
Thesis (M.S.) in Ecology and Environmental Science--University of Maine, 2003. / Includes vita. Includes bibliographical references (leaves 64-69).
|
6 |
Effects of stream restoration on macroinvertebrate communities in an Oregon Coast Range systemChristensen, M. Jo 09 February 1996 (has links)
Stream-restoration projects are usually designed to improve habitat quality for fishes.
These projects manipulate flow patterns, substrate distribution, and amount and
placement of large woody debris. Consequently, they also affect the size and composition
of the aquatic macroinvertebrate community. This research evaluates two types of fish
habitat restoration: off-channel structures (alcoves) and in-channel structures (log weirs).
I compared macroinvertebrate habitats and communities in natural and artificial alcoves
in Upper and South Fork Lobster Creeks, Lane Co., and examined the effects of log
weirs on in-channel habitat diversity, community composition, drift patterns, and fish
consumption of macroinvertebrates. Macroinvertebrate samples were collected from
artificial and natural alcoves using hand pumps and D-nets. Within the channel,
macroinvertebrates were collected from restored and unrestored reaches with a Hess
sampler and using a stratified random sampling scheme. Forty-eight hour invertebrate
drift samples were obtained at outlets of log-weir pools. Stomach contents were obtained
from coho salmon (Oncorhynchus kisutch) and cutthroat trout (O. clarki) in restored
reaches.
Although natural alcoves differed from artificial in location within the floodplain,
morphology, permanence, and degree of interaction with the stream channel, both alcovetypes
provided similar habitats and contained similar macroinvertebrate communities.
Average densities and diversity within the alcoves depended on habitat and time of year.
Average densities were higher in artificial than in natural. Alcoves contained 29% of
species richness within Upper Lobster Creek.
Within the stream channel, the diversity of macroinvertebrate habitat was lower in
restored than in unrestored sections. Log weirs were associated with reduced taxonomic
and functional feeding-group diversity. Composition of drift was not significantly
different in restored and unrestored areas; however, drift densities were significantly
lower in restored reaches. Diets of fishes in restored areas were composed primarily of
organisms produced from outside restored areas. Although in-channel structures may
enhance physical habitat for fishes, they may alter or reduce the availability of food for
fishes feeding on drifting invertebrates.
Recommendations are given for improving the design of stream restoration projects
with respect to macroinvertebrates; however stream restoration should focus on restoring
whole-system integrity and function, instead of targeting just one or two types of
organisms. / Graduation date: 1996
|
7 |
Post-treatment erosion of decommissioned forest road stream crossings /Wilson, Sarah Elisabeth. January 1900 (has links)
Thesis (M.S.)--Humboldt State University, 2008. / Includes bibliographical references (leaves 45-47). Also available via Humboldt Digital Scholar.
|
8 |
Wilderness rivers : environmentalism, the wilderness movement, and river preservation during the 1960s /Empfield, Jeffrey Morgan. January 1994 (has links)
Thesis (M.A.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 191-198). Also available via the Internet.
|
9 |
Using geographic information systems to develop and analyze land use policies /Gillfillan, Abigail. January 2008 (has links)
Thesis (M. P. A.)--Texas State University-San Marcos, 2008. / "Spring 2008." Includes bibliographical references (leaves 85-87).
|
10 |
Homeowner's handbook to protecting Puget Sound streamsTangen, Jan G. January 1900 (has links) (PDF)
Thesis (M.E.S.)--Evergreen State College, 2008. / "June, 2008." Title from title screen (viewed 5/20/2010). Includes bibliographical references (p. 33-36).
|
Page generated in 0.1557 seconds