Dissertations / Theses on the topic 'Riparian areas'
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1
Zaimes, George, Mary Nichols, Douglas Green, and Michael Crimmins. "Understanding Arizona's Riparian Areas." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2007. http://hdl.handle.net/10150/146921.
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114 pp.Riparian areas occupy less than 2% of the arid Western United States. Their importance is disproportionate to the small area they occupy because of their multiple use applications. Riparian areas provide recreational amenities, habitat and travel corridors for wildlife, livestock grazing areas and influence water quality and quantity. In Arizona, as in many other states, there is a need to provide science-based educational publications to inform the public on riparian areas. In this publications the information will focus on: 1) the definition, importance and characterization of riparian areas 2) hydrologic, geomorphic, climatic, and biological processes in riparian areas, and 3) human alterations to riparian areas. This information is essential for land-managers and the general public to manage properly or restore healthy riparian areas.
2
Crandall, Kristine Birke 1964. "Measuring the economic benefits of riparian areas." Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/291524.
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In an attempt to identify the net benefits of different allocations of western water resources, resource economists have developed several techniques to value nonconsumptive water uses--uses which are not well-represented in the marketplace. The application of these techniques to sites with flowing streams and riparian ecosystems is the topic of this thesis. A survey incorporating the travel cost method, the contingent valuation method, and local economic impact analysis was used to assess the benefits of the Hassayampa River Preserve near Wickenburg, Arizona. Wildlife viewing is the primary visitor activity at this site, and is fully dependent on the availability of water in the Hassayampa River. This riparian site produces economic benefits that, while previously unmeasured and unaccounted for, should be included in future water allocation decisions.
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Docker, Benjamin Brougham. "Biotechnical engineering on alluvial riverbanks of southeastern Australia a quantified model of the earth-reinforcing properties of some native riparian trees /." Connect to full text, 2003. http://hdl.handle.net/2123/1688.
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Thesis (Ph. D.)--School of Geosciences, Faculty of Science, University of Sydney, 2004.Degree awarded 2004; thesis submitted 2003. Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Geosciences, Faculty of Science. Title from title screen (viewed 13 January 2009). Includes bibliographical references. Also available in print form.
4
Crawford, John A. "Beyond the edge : riparian habitat use and forest management effects on stream salamanders in the southern Appalachian mountains /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4758.
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Thesis (Ph. D.)--University of Missouri-Columbia, 2007.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on November 27, 2007) Vita. Includes bibliographical references.
5
Wilkosz, Mary Elizabeth. "River and wetland conservation and preservation issues in Arizona : a study of agenda building." Thesis, The University of Arizona, 1989. http://ezproxy.library.arizona.edu/login?url=.
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Miller, Travis John. "Evaluating riparian health assessment methods for perennial streams in Montana." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/miller/MillerT0805.pdf.
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Newbrey, Michael G. "Morphologic and meristic characteristics of lacustrine coarse woody structure as fish habitat /." Link to Abstract, 2002. http://epapers.uwsp.edu/abstracts/2002/Newbrey,M.pdf.
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Darambazar, Enkhjargal. "Factors influencing diet composition of beef cattle grazing mixed conifer mountain riparian areas." Thesis, Connect to this title online, 2003. http://hdl.handle.net/1957/3137.
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Zadnik, Andrew Karl. "Wildlife use and habitat quality of back channel areas associated with islands on the Ohio River, West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2898.
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Thesis (M.S.)--West Virginia University, 2003.Title from document title page. Document formatted into pages; contains v, 131 p. : col. ill., col. maps. Includes abstract. Includes bibliographical references.
10
Anderson, Dustin Carl. "How landforms and geology affect the structure of riparian areas." Thesis, Montana State University, 2012. http://etd.lib.montana.edu/etd/2012/anderson/AndersonD0812.pdf.
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Current riparian zone assessments focus on the morphological features of the stream channel and ocular vegetation measurements. This procedure fails to address the hydraulic features responsible for the floristic structure and composition of the riparian zone. We looked at how the geology and landforms function as drivers of groundwater and surface-water exchange. These can mitigate watershed processes via groundwater availability to shape riparian processes; e.g. discharge, seasonality. We hypothesized that groundwater surface-water exchange is a first order process and that it dictates riparian water availability and that the underlying geology and landform can serve as a tool to gain greater understanding of a properly functioning riparian ecosystem. We tracked groundwater surface-water exchange using wells, piezometers, water temperature, conservative tracer injections and solute conductivity on an alluvial fan in the Gallatin valley. Southwestern Montana Conservative tracer injection indicated 3% tracer losses over the 1.5km reach. Through spring and summer 2011 groundwater wells and piezometers indicated flashy transient shallow groundwater. Significant late growing season stream discharge (~300 l/s) and standard riparian monitoring assessments would suggest a larger floristic community than what is present at the site. These metrics together suggest a disconnection between the surface-water and groundwater ultimately limiting the extent of the riparian vegetation community. We further determined that the surface water is disconnected from the local groundwater table. We conclude that the lack of surface water - groundwater connectivity drives the floristic structure and character of the riparian zone. Skewed or inaccurate views of riparian functionality may occur because; the current assessment fails to address surface water - groundwater connectivity.
11
Pert, Heather Anne. "Desired Future Conditions of Riparian Areas on Southeastern National Forests." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/27994.
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Development of goals (desired future conditions (DFCs)) based on substantial public involvement is critical to the success of ecosystem management on public lands. I evaluated DFCs of riparian areas on national forests in the southern Appalachian mountains and evaluated a process for involving the public in development of DFCs for riparian areas on the Jefferson National Forest. First, I identified the major components, structures, and functions that are essential to riparian health through a literature review. Second, I examined how the key components, structures, and functions identified in the literature review were addressed in the DFCs and standards and guidelines for eight southeastern national forest management plans. In reviewing forest plans, I found a clear shift from emphasizing water quality in older forest plans to a more comprehensive incorporation of the values and functions of riparian areas in more recent plans. Riparian attributes included in DFCs varied widely and disparities between DFCs for forest plans and measurable criteria in the standards and guidelines often occurred.
Finally, I designed, tested, and evaluated a public involvement process that identified public values for use in the development of DFCs for riparian areas on the Jefferson National Forest. I used a combination of alternative dispute resolution techniques and the Analytic Hierarchy Process (AHP), a participatory decision-making tool. I used surveys before and after the riparian meetings to evaluate the effectiveness of the public involvement process. Survey respondents generally were middle-aged, well-educated, high-income males who were long-time residents of the area. Riparian meeting participants indicated that the DFC for riparian areas on the JNF should strongly emphasize water quality and quantity, protection of riparian-dependent species and their habitats, and maintenance of the integrity of the relationship between riparian areas and the surrounding environment. Participants indicated recreational and commodity uses of riparian areas could occur as long as they did not negatively affect the other, more highly valued characteristics of riparian areas. Participants felt that the meetings were fair, that diverse interests were represented, that they had enough information to participate in the process, and that it was a wise use of their time.Ph. D.
12
Watson, Tara Kimberly. "Groundwater nitrate removal capacity of riparian zones in urbanizing watersheds /." Online version in PDF format, 2006. http://www.uri.edu/cels/nrs/whl/Publications/Thesis/Watson_Thesis.pdf.
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Thesis (M.S.)--University of Rhode Island, 2006.Includes bibliographical references (leaves 108-112). Also available online via the University of Rhode Island Watershed Hydrology Laboratory publications home page.
13
Tucker, Ronald A. Jr. "The effects of prescribed fire on riparian groundwater." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/tucker/TuckerR0507.pdf.
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Kellogg, Dorothy Q. N. "The influence of geomorphic setting on ground water denitrification in forested riparian wetlands /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3206252.
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Magoba, Rozwivhona Faith. "Influences of river flows on recruitment success of Fynbos riparian vegetation along selected high gradient streams in the Western Cape, South Africa." University of the Western Cape, 2014. http://hdl.handle.net/11394/4362.
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>Magister Scientiae - MScRiparian vegetation occurs in two distinct zones, the wet bank and the dry bank. Knowledge on how the flow regime influences the zonal structure of riparian vegetation is required to mitigate the adverse effects of water resource utilization on riparian vegetation. The first objective of this study was to determine whether flow exerts a physical influence on zonal structure pre- or post-recruitment. An examination of the survival of seedlings and saplings was conducted along Western Cape rivers to investigate seedling persistence and survival on lateral zones. A comparison of the ratios of seedlings, saplings and adults in different riparian zones for the years, 2004, 2011 and 2013, was carried out. The results suggest that in general seeds are deposited randomly on the banks, where they germinate and become seedlings. Seedlings that become established at locations unsuitable for their persistence into adulthood are removed either by high flows or perish during dry conditions. Thus, lateral zonation eventually develops due to species differences in tolerance to conditions at different positions on the banks. The second objective was to explore the effects of the reduction in dry season low flows on the recruitment success of riparian species at sites upstream and downstream of abstraction points. At most sites plants were arranged into different lateral zones and the numbers of species between upstream and downstream sites were not significantly different. There were significant differences in the abundances between up- and downstream sites, with the loss of herbaceous plants and sedges at downstream sites, both of which favour moist conditions. Also, in the absence of dry season flows, the seedlings of dry bank tree species recruited closer to the channel than those at the sites with summer flows. The shifting of the dry bank into the channel narrows the channel, which may affect the hydraulic pressures exerted during floods. The spatial arrangement in the riparian zone has as much to do with flow conditions post recruitment as it does with conditions during recruitment. This shows that the structure of riparian plants is determined not only by whether or not the minimum flows are met, this points to the need to reinstate the naturally variable flow and adopting a holistic approach for the understanding and management of aquatic systems.
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Schmidt, Kurtiss M. "Differences between burned and unburned riparian systems in northern Nevada." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460775.
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Newton, Casey Harve. "Controlling kudzu (Pueraria montana) in riparian zones and high risk areas." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1202409279/.
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McGinley, Susan. "Sharing Rivers, Sharing Opinions: Perceptions of Riparian Areas: Values and Uses." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1997. http://hdl.handle.net/10150/622329.
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Berges, Sara Alexandra. "Ecosystem services of riparian areas stream bank stability and avian habitat /." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1473181.
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Perkins, Dustin Wakefield. "The Effects of Riparian Timber Management on Amphibians in Western Maine." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/PerkinsDW2004.pdf.
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Baker, Corey Ryan. "Mapping and change detection of wetland and riparian ecosystems in the Gallatin Valley, Montana using landsat imagery." Thesis, Montana State University, 2004. http://etd.lib.montana.edu/etd/2004/baker/BakerC1204.pdf.
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Pacific, Vincent Jerald. "Hydrology and landscape structure control subalpine catchment carbon export." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/pacific/PacificV0509.pdf.
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Carbon export from high elevation ecosystems is a critical component of the global carbon cycle. Ecosystems in northern latitudes have become the focus of much research due to their potential as large sinks of carbon in the atmosphere. However, there exists limited understanding of the controls of carbon export from complex mountain catchments due to strong spatial and temporal hydrologic variability, and large heterogeneity in landscape structure. The research presented in this dissertation investigates the control of hydrology and landscape structure and position on two major avenues of carbon loss from mountain watersheds: soil respiration and stream dissolved organic carbon (DOC) export. Measurements of soil respiration and its biophysical controls (soil water content, soil temperature, vegetation, soil organic matter, and soil physical properties) and stream and groundwater DOC dynamics are presented across three years and multiple riparian-hillslope transitions within a complex subalpine catchment in the northern Rocky Mountains, Montana. Variability in soil respiration was related to hydrologic dynamics through space and time and was strongly influenced by topography and landscape structure. Cumulative soil COâ‚‚ efflux was significantly higher from wet riparian landscape positions compared to drier hillslope locations. Changes in hydrologic regimes (e.g. snowmelt and precipitation timing and magnitude) also impacted soil respiration. From a wet to a dry growing season, there were contrasting and disproportionate changes in cumulative growing season surface COâ‚‚ efflux at wet and dry landscape positions. Stream DOC export was also influenced by landscape structure and hydrologic variability. The mobilization and delivery mechanisms of DOC from the soil to the stream were dependent upon the size of DOC source areas and the degree of hydrologic connectivity between the stream and the riparian and hillslope zones, which varied strongly across the landscape. This dissertation provides fundamental insight into the controls of hydrology and landscape structure on carbon export from complex mountain watersheds. The results of this research have large implications for the carbon source/sink status of high elevation mountain ecosystems, the influence of changing hydrologic regimes on soil respiration, and the use of landscape analysis to determine the locations of large source areas for carbon export.
23
Webb, Ashley Adrian. "Episodic erosion, riparian vegetation colonisation and the late holocene stability of sand-bed, forest streams in southeastern Australia." Thesis, The University of Sydney, 2002. https://hdl.handle.net/2123/28458.
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Natural interactions between riparian vegetation, large woody debris (LWD) and the fluvial
geomorphology of forest streams in North America and Europe have been well researched. In
southeastern Australia, where rainfall and runoff are highly variable, where riparian
vegetation species are unique and where many streams have been altered since European
settlement, there is a paucity of research on such biogeomorphic interactions. This thesis
aimed to partly address this knowledge gap by undertaking detailed case studies of four
undisturbed streams that varied in their degree of lateral confinement by materials of limited
erodibility, i.e. differences in the size and nature of the valley floor trough. These included a
laterally and vertically bedrock-confined channel flanked by a series of discontinuous inchannel
benches but with no floodplain (Mogo Creek); a laterally bedrock-confined channel
flanked by a discontinuous high vertically accreted floodplain and a series of discontinuous
in-channel benches (Wheeny Creek); a partially bedrock- and terrace-confined channel
discontinuously flanked by pockets of floodplain (Bruces Creek); and a slightly terraceconfined
channel continuously flanked by floodplain (Tonghi Creek). Extensive radiocarbon
dating of floodplain charcoal at each site highlighted the fact that episodic, rainfall-generated
cataclysmic floods have occurred during the late Holocene. These floods totally removed
alluvial landforms, including the floodplain forest, from within the valley floor trough.
Riparian vegetation communities that have colonised the landforms that redeveloped in the
erosional void exhibit a distinct lateral and vertical zonation of species that is determined by
the degree of resistance of different species to natural flood disturbance. More flood-resistant
tree species, such as Tristaniopsis laurina, are able to grow and survive within the channel
and on the channel banks and in—channel benches; possess the ability to reshoot from
epicormic buds following high-energy flood disturbance; and can rapidly colonise recently
formed alluvial landforms. Less flood—resistant species, such as the Eucalyptus species, grow
on higher parts of the floodplain or on remnant Pleistocene river terraces where flood flows
are of lower energy and occur less frequently.
Measured LWD loadings ranged from 47 m3ha‘I at Mogo Creek to 751 m3ha‘l at Bruces
Creek and varied in relation to specific stream power, the relaxation period between
cataclysmic floods and the age-structure of the riparian vegetation community from which the
LWD was recruited. Large woody debris recruitment processes varied in relation to the
geomorphic setting and zonation of riparian vegetation. Episodic bank erosion, undercutting
and senescence were identified as the dominant LWD recruitment processes from T. laurina
trees growing along the banks of Tonghi and Bruces Creeks, while episodic windthrow was
identified as the LWD recruitment process from Eucalyptus trees growing on the floodplains
and terraces at these sites. At Mogo and Wheeny Creeks, destruction of in—channel benches by
catastrophic floods was identified as the dominant LWD recruitment process from T. laurina
and Leptospermum polygalifolium shrubs, while episodic windthrow was the dominant LWD
recruitment process from the Eucalyptus trees growing on the high floodplains, where present,
and adjacent hillslopes. The longitudinal distribution, orientation and hydraulic impacts of
LWD pieces, and the development of log-steps were strongly influenced by the energy of
flows experienced and the ratio of tree and LWD size to channel size. Due to high timber
densities LWD tends to sink and become partially or completely buried by bedload. It is only
in streams with high LWD loadings, low to medium energy bankfull flows and high LWD
size to channel size ratios, such as Bruces Creek, that interlocking, wedged pieces of LWD
form closely spaced debris dams. The maximum residence time for LWD identified by
radiocarbon dating was 980 years on Eucalyptus timber in Wheeny Creek and was interpreted
as representing the relaxation period following the most recent cataclysmic flood.
Biogeomorphic evidence indicates that riparian vegetation and large woody debris can exert a
significant influence on the fluvial geomorphology of sand-bed, forest streams in southeastern
Australia by contributing to processes such as pool formation, stream energy dissipation, bank
strength, sediment storage patterns, bed stability, oblique bank accretion, in—channel bench
and mid-channel bar formation. However, rainfall—generated cataclysmic floods, capable of
totally obliterating all landforms within the valley floor trough, including the floodplain
forest, have occurred during the late Holocene. Cataclysmic floods exceed vegetationcontrolled
thresholds of channel and floodplain stability and resultant specific stream powers
of at least 2500 Wm‘2 enable the flood to erode the channel and floodplain to bedrock. Such
floods occur more frequently in flood variable regions on high energy streams in narrow
valley floor troughs. The width and nature of the valley floor trough, specific stream power
and the relaxation period between floods are identified as important factors determining the
subsequent influence of riparian vegetation and LWD on the stability of the landforms that
redevelop in the erosional void.
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Waterhouse, F. M. Louise. "Habitat of winter wrens in riparian and upland areas of coastal forests." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37660.pdf.
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Rajbhandari, Beryl. "The role of riparian buffer in water quality improvement : an economic perspective /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17730.pdf.
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Franz, Simone, and University of Lethbridge Faculty of Arts and Science. "The effect of cattle grazing in riparian areas on winter biodiversity and ecology." Thesis, Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, c2009, 2009. http://hdl.handle.net/10133/2516.
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Livestock grazing in riparian habitats alters the vegetation structure, which has a detrimental effect on wildlife. This study examined the effect of cattle grazing in riparian habitats on winter bird biodiversity, small mammal biodiversity, and microclimate. Study sites were ungrazed, moderately grazed, and heavily grazed riparian habitats along the Oldman River, Alberta during winter 2005 and 2006. Bird species richness, individual abundance, and diversity indices were higher in ungrazed habitats than in grazed habitats. Deer mouse population sizes were not different except during spring 2006, when populations were larger in ungrazed sites. Microclimate data were collected in riparian sites and upland sites in winter 2006. Temperatures were higher and wind speeds were slower in riparian sites than in upland sites. Wind speeds were faster in heavily grazed riparian sites than in lightly grazed sites. Faster winds in heavily grazed sites may account for the decreased winter biodiversity in these habitats.x, 118 leaves ; 29 cm
27
McGinley, Susan. "Location, Location, Location: The Effect of Riparian Areas on Property Values in Tucson." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2007. http://hdl.handle.net/10150/622138.
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Wilson, Greg J. "Combining field measurement of nitrate removal rates and a flow model to predict nitrate removal in the Walker River riparian zone." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1460789.
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Turner, Bradley T. Bratton Susan P. "The sublime and the synthetic riparian art and industrialization /." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5262.
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Jungst, Laura J. "Soil quality and stream channel characteristics of montane and subalpine riparian meadows, Sierra Nevada, California." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1799711371&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
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Capello, Stephanie V. Allen Peter M. "Modeling channel erosion in cohesive streams of the Blackland Prairie, Texas at the watershed scale." Waco, Tex. : Baylor University, 2008. http://hdl.handle.net/2104/5220.
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Fox, Martin J. "Spatial organization, position, and source characteristics of large woody debris in natural systems /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5463.
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Burns, Jennifer M. "Site design for xeroriparian wildlife habitats in urbanizing areas of Eastern Pima County, Arizona." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276857.
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This thesis integrates wildlife management and biology, urban residential development, and the hydrology of desert watercourses. Literature is surveyed within each area and information is applied to the issue of wildlife conservation in urbanizing areas of Eastern Pima County. It is recognized that some natural wildlife habitats and wildlife species are valued by urban residents. Valuable areas of wildlife habitat are being lose due to conventional residential development strategies. This paper discusses the impact of typical residential development on native Southwestern wildlife species and habitat. Alternative development design guidelines are proposed which would provide viable wildlife habitat within developed areas. Design guidelines which are presented in this paper are applicable to low elevation arid areas in the Southwest where developers are seeking to integrate natural wildlife habitat within residential areas.
34
Honda, Motoshi. "Relationships between flood frequency and riparian plant community structure in mountain streams of western Montana." The University of Montana, 2008. http://etd.lib.umt.edu/theses/available/etd-05302008-155627/.
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Flooding is the dominant factor structuring riparian plant communities along large, low elevation streams, but it is less clear what role flooding plays in the structure and composition of riparian plant communities along mountain streams. In the first part of this study, I examined the influence of four environmental variables (flood frequency, microtopography, light availability, and soil texture) and spatial heterogeneity on riparian plant community structure in seven study areas along mountain streams in western Montana, USA. Multivariate and spatial statistics were used to determine the relative strength of each set of factors and their interactions in explaining riparian plant community structure. Flooding influenced vegetation characteristics by an indirect pathway through microtopography in all study areas, whereas the direct influence of flooding was found commonly only in three study areas. Other consistent direct influences included light (60%) and space (87%). Direct and indirect influences of flood frequency through microtopography, and the direct influences of light and vegetation patch structure should be included in predictive models of riparian plant community structure in mountain streams. Boundary analysis showed that microtopography was an important factor for boundary maintenance of riparian plant communities. In the second part of the study, the effective flood frequency was determined initially by partial Mantel tests between inundation extent associated with each flood frequency and plant communities, and the results were compared to floristic characteristics derived from DCA and Indicator Species Analysis. Flood frequencies ranging from one to eight years were most strongly associated with the understory and overall plant community structure, whereas overstory communities were influenced by both frequent (¡Ü 9 year) and large infrequent (¡Ý35 year) floods. Riparian plant communities in mountain streams are mostly influenced by frequent flooding but large floods are also important for maintaining spatial heterogeneity.
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Stamp, Michelle. "Oomycota in Scottish water catchments : diversity and relationships between species, riparian land use and ecosystem function." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230062.
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Oomycetes are eukaryotic fungus-like microorganisms that are known to be pathogenic to plants and animals, causing both ecological and economic damage. Animal pathogenic oomycetes, such as Saprolegnia species are destructive pathogens to many aquatic organisms and are found in most parts of the world. Phytophthora species cause a number of plant diseases. Pythium are less understood as many of these species are saprotrophs which are not thought to be pathogenic. Oomycete research has focussed mainly towards the characterisation and control of pathogenic species with very little information on the ecology of Oomycetes. In this thesis, oomycete species were isolated from water samples collected from rivers in Scotland and Northern England. Baiting and water filtration were used to compare the reliability of both methods, and nested PCR was used to compare the number and types of species obtained in comparison to conventional culturing methodologies. The results suggest that water filtration provided a fast, reliable method for isolating abundant, hardier species such as Pythium undulatum, Saprolegnia diclina, Saprolegnia delica, and Saprolegnia ferax. Water chemistry, surrounding land use, seasonality and land elevation were found to be important factors in Oomycete diversity. Nested PCR of oomycetes directly from filters to obtain target DNA from organisms which are more difficult to culture or less numerous proved to be useful for some species, but will need more refinement of primer and methodologies to obtain species of interest. Sampling of the rivers resulted in the isolation of three new Pythium spp. isolated from the Rivers Spey and Dochart in Scotland. Phylogenetic analysis, infection studies, growth rates and microscopy were used to characterise these three species.
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Goates, Michael Calvin. "The dogma of the 30 meter riparian buffer : the case of the boreal toad (Bufo boreas boreas) /." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1203.pdf.
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Scribner, Nick T. "Forecasting recruitment of coarse woody structure from the riparian area to the littoral zone of a north temperate lake in Wisconsin /." Link to full-text, 2006. http://epapers.uwsp.edu/thesis/2006/scribner.pdf.
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Rhoades, Erica L. "Quantifying bank erosion on the South River and its importance in assessing mercury contamination." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 82 p, 2008. http://proquest.umi.com/pqdweb?did=1597631421&sid=7&Fmt=2&clientId=8331&RQT=309&VName=PQD.
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Hyun, Karen Hae-Myung. "Ecosystem-based management in the Colorado River Delta /." View online ; access limited to URI, 2008. http://0-digitalcommons.uri.edu.helin.uri.edu/dissertations/AAI3314442.
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Unger, Irene M. "A multi-dimensional investigation into the effects of flooding on the physical, chemical and biotic properties of riparian soils." Diss., Columbia, Mo. : University of Missouri-Columbia, 2008. http://hdl.handle.net/10355/5582.
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Thesis (Ph. D.)--University of Missouri-Columbia, 2008.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed June 17, 2009). Vita. Includes bibliographical references.
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Pattumma, Klairoong. "VEGETATION STRUCTURE, LIGHT AVAILABILITY, AND SEDIMENT DEPOSITION WITHIN SINKHOLE BUFFERS ASSOCIATED WITH TRACKED AND WHEELED VEHICLE TRAINING AT FORT KNOX, KENTUCKY." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/691.
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Heavy wheeled and tracked vehicle training has been conducted on portions of the landscape of Fort Knox, Kentucky for approximately 60 years. Fort Knox is located on the Kentucky Karst Plain and sinkholes are dominant features of this area. Sinkholes and karst terrain present an atypical problem in combination with this unique land use, potentially impacting downstream and local terrestrial environment. A study of the training area sinkhole complex was conducted as a first step toward mitigating the impact of military activities and reduces potential problems of sedimentation and water quality degradation. A total of 20 sinkholes within Training Areas 9 and 10 at the Fort Knox Military Reservation were randomly selected to represent the study area. The objective of this study was to determine the relationship between stand structural characteristics, understory light availability and understory vegetation in sinkhole riparian buffers and concentrated flow paths and with the amount of sediment entering sinkholes in the study area. Vegetation data were collected during the growing months of May and June in 2009. All regressions analyses for vegetative structures have r2 values between 0.000 to 0.308 indicating weak to no correlation among the variables. Light availability and percent herbaceous cover showed moderate and weak relationship in buffers (r = 0.547, p = 0.003) and flow paths (r = 0.164, p = 0.245). Sediment gained in splay areas showed no significant relationship to vegetation structure (r = 0.039 to -0.335). The relationship between sediment gained and mean percent herbaceous cover was not significant in flow paths (r = -0.172, p = 0.2341) or buffers (r = 0.130, p = 0.292). While the results of this study suggest the amount of the sediment depositing in the sinkholes was unrelated to observe variation in sinkhole vegetation, the relationship between overstory vegetation and understory vegetation within sinkholes was more noticeable. On site observations strongly suggest that concentrated flow paths were the primary conduits for sedimentation into splay areas. Therefore, management considerations pertaining to training areas should minimize flow paths leading to sinkholes. Best management practices for Fort Knox training areas should integrate these research findings, in addition to current knowledge of riparian buffers and training areas' management requirements.
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Averill, Annalaura 1967, and Annalaura 1967 Averill. "Brown-headed cowbird parasitism of neotropical migratory songbirds in riparian areas along the lower Colorado river." Thesis, The University of Arizona, 1996. http://hdl.handle.net/10150/192094.
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Populations of several riparian-obligate, neotropical migratory songbirds have declined in recent years, partly due to brood parasitism by brown-headed cowbirds (Molothrus ater). In 1994 and 1995, 1 measured parasitism rates and nesting success of 4 riparian-obligate, neotropical migrants breeding in the lower Colorado River valley. Because vegetation characteristics of nest sites may influence cowbird parasitism and host nesting success, I also measured vegetation attributes associated with nest-site selection. Parasitism rates were 40-90%, and reproductive success was significantly lower in parasitized nests. Foliage cover may influence host nest-site selection and prevent cowbird nest discovery. The patchy distribution of native tree species may have aided cowbird nest discovery by providing elevated survey perches. Saltcedar (Tamarix ramosissima) was an important understory component providing foliage cover at nests. Understanding vegetation characteristics associated with host and cowbird nest-site selection should be useful in riparian restoration projects and cowbird control.
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Krenz, Robert John III. "Organic Matter Processes of Constructed Streams and Associated Riparian Areas in the Coalfields of Southwest Virginia." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73430.
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Central Appalachian headwater streams in coalfield areas are prone to mining disturbances, and compensatory mitigation is required in cases of documented impacts. Stream construction on reclaimed mines is a common mitigation strategy. Streams constructed as compensatory mitigation are meant to restore structural and functional attributes of headwater streams and are often evaluated by measuring structural ecosystem characteristics. However, replacement of stream ecosystem functions is essential for mitigation of mining disturbances from an ecosystem perspective. This research compared selected structural and functional measures in eight constructed streams on mined areas to those of four forested reference streams across two years. Three organic matter functions were evaluated: riparian litterfall input, leaf breakdown, and periphyton accrual. Constructed streams were typically warmer than reference streams and also had elevated specific conductance, elevated oxidized nitrogen concentrations, depressed benthic macroinvertebrate richness, and lower levels of canopy cover. Functionally, litterfall input and total leaf breakdown means for constructed streams were approximately 25% and 60% of reference means, respectively. Leaf breakdown in constructed streams appeared to be inhibited as a result of reduced processing by benthic macroinvertebrates as well as inhibition of microbial and physicochemical pathways. Constructed streams with total breakdown rates most similar to reference-stream levels had the coldest stream temperatures. Areal periphyton biomass, benthic algal standing crop, and senescent autotrophic organic matter in constructed streams were roughly quadruple, double, and quintuple those of reference streams, respectively. Indicator ratios also suggested stream-type differences in periphyton structure. Mean algal accrual was greater in constructed streams than in reference streams during leaf-on seasons. My results suggest that light is likely the primary factor driving accrual rate differences during summer and fall, but that temperature may also be important during fall. Planting a diverse assemblage of native riparian trees and ensuring their successful development can inhibit benthic irradiance and thermal energy inputs while providing similar quantity and quality of OM to constructed streams, thereby fostering replacement of reference-like OM functions in some streams.Ph. D.
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Holmes, Kathryn Lynn. "The Ecology and Management of Headwater Riparian Areas in the Erie Gorges Ecoregion of Northeastern Ohio." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1213197375.
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Robertson, M. S. T. "Riparian management guides : are they meeting the needs of the interested public?" Diss., Lincoln University, 2008. http://hdl.handle.net/10182/601.
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In New Zealand, there are many published guidelines about the management of riparian areas. The question needs to be asked, are these guides useful? This research thesis investigates the extent to which riparian management guides meet the needs of the users. This research also considers the importance of riparian management (with regards to the appropriateness of educational guides) in assisting practitioners and the interested public in the management of riparian areas. The main way of investigating this topic was with the help of discussion groups. Discussion groups were held with interested organisations. These groups fell into three categories; Urban groups, Rural groups and Interest groups. The groups were asked to define what would make a guide most useful and desirable to them under three major categories: 1) what the guide looked like, 2) what information was contained, and 3) how was the information accessed. An opportunity was also provided for any further comments. This information was used to create a list of the most popular criteria that existing guides and further publications could be examined against. Eleven criteria were identified as follows: Information should be available online; Have pictures; Include diagrams; Is simple and easy to understand; Contains how to and appropriate methods; Has a plant list; Considers maintenance issues; Identifies where to locate further information; How to contact experts; Is available in libraries; Is in booklet form. The availability of existing information was investigated and its suitability assessed against the criteria. A list of all regional, territorial and unitary councils as well as 'other organisations' that were regarded as sources of environmental knowledge were investigated to see how many had produced information on riparian and wetland management issues. In terms of sources of information, 'other organisations' produce the greatest rate of riparian management information, followed by regional/unitary authorities. Two guides from Canterbury best meet the criteria identified by the interested parties, for the Canterbury region. Each scored 10/11 and failed on different criteria. This led to the conclusion that riparian management guides in Canterbury, while obviously still having room for improvement, are very close to meeting what interested parties feel is most important. Finally, a prototype (model) based on the research is provided for anyone who might be considering preparing a riparian management guide.
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Naude, Minette. "Fynbos riparian biogeochemistry and invasive Australian acacias." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20325.
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Thesis (MScConEcol)--Stellenbosch University, 2012.ENGLISH ABSTRACT: Riparian ecotones, transitional areas between upland terrestrial communities and aquatic ecosystems, are very dynamic and complex ecosystems with intrinsic ecological properties differing in spatial structure, function and temporal dynamics. Riparian habitats along rivers of the Mediterranean south-western Cape are sensitive to environmental change and particularly vulnerable to invasion by invasive alien plants (IAPs), especially nitrogen-fixing Acacia spp., and yet relatively little work has focused on how riparian ecosystems in this region respond to such stressors. The important roles that intact riparian vegetation play in maintaining ecosystem integrity and services have been increasingly highlighted as we acknowledge the degradation of these habitats. While the Working for Water (WfW) programme has been shown to be very successful in eradicating IAPs in riparian zones in the short-term, the extent to which riparian ecosystems recover following alien clearing activities remains poorly understood. The results presented in this study addressed several different aspects of riparian structure and function and acts as a steppingstone for guiding future research and management in riparian zones by adding to the evaluation of the success of clearing initiatives and restoration thereof. The aim of this study was to assess plant functional type (PFT) cover, soil physical and chemical properties, and selected biogeochemical processes in natural, Acacia- invaded and cleared riparian ecotones and associated non-riparian upland fynbos. Fieldwork was performed in mountain and foothill sections of six perennial river systems within the south-western Cape. Eleven sites of three categories were chosen: four natural sites (uninvaded); four moderate to highly invaded sites (predominantly A. mearnsii); and three cleared sites (a formerly invaded site that had been cleared more than 7 years prior to the study). Within each site, four to five replicate plots were established along each of three geomorphological zones (wet bank, dry bank, and upland fynbos). Seasonal soil samples were collected for a period of one year. Results from this study showed that PFT cover and composition, soil physical and chemical properties and rates of nitrogen (N) and phosphorus (P) mineralization differed amongst invasion status, between geomorphological zones and across seasons. Regarding most soil physical and chemical properties and indices N and P cycling, river floodplains (dry banks) were very similar to terrestrial uplands. Acacia spp. changes soil properties and affects plant functional attributes by i) enriching the system with N; ii) enhancing litter inputs; iii) altering soil physical properties; iv) changing the composition and reducing the cover of PFT; and v) enhancing P mineralization rates. Although measured soil physical and chemical properties and N and P mineralization rates were reduced to levels that were similar to or resembled the situation at natural areas, available inorganic N remained two times higher after more than seven years of clearance. Furthermore, cleared areas were characterized by sparse woody cover and a high cover of alien grasses. Correlations between soil silt and clay content and several soil properties measured in this and other studies indicates important linkages between soil texture and resource availability. Clearing Acacia spp. may initiate restoration of invaded riparian ecosystems, but changes in ecosystem function (e.g. elevated soil N availability) as a result of invasion may necessitate active restoration following the removal of the alien species. Active restoration under such conditions would be required to facilitate the restoration of cleared riparian communities. However, we still lack the mechanistic understanding around fynbos riparian recovery after clearing, as the success of restoration may depend on complex interaction and feedback cycles between plants and their physical environment. A greater comprehensive understanding of fynbos riparian ecological processes will not only improve the effectiveness of restoration initiatives by integrating science and management, but also advance the field of riparian ecology.
AFRIKAANSE OPSOMMING: Rivier oewerwal-areas, oorgang gebiede tussen aangrensende terrestriële gemeenskappe en akwatiese ekosisteme, is baie dinamiese en komplekse ekosisteme met intrinsieke ekologiese eienskappe wat verskil in struktuur, funksie (bv. biogeochemie siklusse) en temporale dinamika. Oewerhabitatte langs riviere van die Mediterreense suid-wes Kaap is sensitief vir omgewingsveranderinge en kwesbaar vir indringing deur uitheemse plante (bekend as “invasive alien plants” (IAPs)), veral stikstof-fiksering Acacia spp., en relatief min werk het nog gefokus op hoe ekosisteme in die streek reageer op sulke veranderinge in die omgewing. Die belangrike rol wat gesonde oewerwal plantegroei speel in die handhawing van ekosisteemdienste- en integriteit, is al hoe meer uitgelig soos ons die agteruitgang van hierdie habitat in ag neem. Terwyl die Werk vir Water (WvW)-program al dat baie suksesvol was in die uitwissing van IAPs in oewersones in die kort termyn, is die mate waarin oewer-ekostelsels herstel na skoonmaakaksies swak verstaan. Fynbos oewerwal-areas is grootliks ingeneem deur houtagtige IAPs, veral stikstof fiksering Acacia spp. (soos Acacia mearnsii). Die resultate wat in hierdie studie aangebied is, het verskillende aspekte van oewer- struktuur en funksie aangespreek en dien as middel vir toekomstige navorsing en bestuur van oewerwal ekosisteme deur by te dra tot die evaluering van die sukses van skoonmaak inisiatiewe en die herstelproses daarvan. Die doel van hierdie projek was om die moontlikhede vir herstel van fynbos owerwal-ekostelsels te evalueer deur middel van verskeie grond- fisiese en chemiese eienskappe; plant funksionele groep dekking (genoem ‘plant functional types’ (PFT)); en geselekteerde grond biogeochemie prosesse in natuurlike, Acacia- aangetaste, en skoongemaakte rivierstelsels en nabygeleë terrestriese areas te vergelyk. Veldwerk is gedoen in bergstroom en voetheuwel rivierseksies van ses standhoudende rivierstelsels in Suid-wes Kaap, Suid Afrika. Van uit hierdie geselekteerde rivierstelsels is elf studie areas van drie kategorieë (of indringing status) gekies: vier natuurlike areas (nie aangetas); vier gematig- tot hoogs aangetaste areas (hoofsaaklik A. meanrsii); en drie skoongemaakte areas (rivieroewers wat meer as sewe jaar van te vore skoongemaak is). Binne elke studie area was vier tot vyf soortgelyke persele gevestig by elke van drie breë geomorfologiese sones: naamlik nat-, droë en hoogliggende terrestriese fynbos. Seisoenale grondmonsters vir 'n tydperk van een jaar is geneem. Resultate van hierdie studie het getoon dat PFT dekking en samestelling, grond fisiese- en chemiese eienskappe en N-mineralisasie en suur fosfatase aktiwiteit verskil tussen indringing status, geomorfologiese sones en oor seisoene. Ten opsigte van meeste grond fisiese en chemiese eienskappe en indekse van stikstof (N) en fosfor (P) siklusse kom die rivier vogregimes (droë oewersones) baie ooreen met die terrestriële gebiede. Aan die anderkant is die natbanksones gekenmerk deur grondeienskappe wat baie verskil van die ander twee geomorfologiese gebiede. Die gegewens ondersteun die hipotese dat indringing deur Acacia spp. verskeie grondeienskappe verander en plante se funksionele kenmerke beïnvloed deur i) die sisteem met voedingstowwe te verryk (veral N); ii) verhoog die toevoeging van plantmateriaal; iii) verander grond fisiese eienskappe; iv) verander die samestelling en verminder die dekking van PFT; v) en verhoog P biogeochemie. Hoewel grond fisiese -en chemiese eienskappe, en indekse van N en P mineralisasie verminder is tot vlakke wat soortgelyk aan natuurlike areas, het beskikbare anorganiese N twee keer hoër gebly by skoongemaakte gebiede. Nietemin, voorheen skoongemaakte gebiede is weer-binnegeval deur eksotiese grasse en die regenerasie of hertelling van inheemse fynbos gemeenskappe is taamlik beperk, veral houtagtige oewer struike en bome. Korrelasies tussen grond slik-en klei-inhoud en verskeie grondeienskappe gemeet in hierdie en ander studies dui op belangrike skakeling tussen die grondtekstuur en voedingstof beskikbaarheid. Die opruiming van Acacia spp. mag as aansporing dien vir die herstellingsproses van rivieroewerstelsels, maar veranderinge in die funksie van ekosisteme (bv. verhoogte grond N beskikbaarheid), as gevolg van indringing, mag aktiewe herstel noodsaak nadat die indringer spesies verwyder is. Aktiewe herstel onder sulke omstandighede sal verwag word om die herstel van skoongemaak oewer gemeenskappe te fasiliteer. Ons het wel egter nog 'n gebrek aan die meganistiese begrip in verband met die herstel van fynbos oewerwal areas na opruimings-inisiatiewe, sedert die sukses van herstel kan afhang van komplekse interaksie en terugvoer siklusse tussen die plante en hul fisiese omgewing. ʼn Meer omvattende begrip van fynbos rivieroewer ekologiese prosesse sal nie net die doeltreffendheid van opruimings-inisiatiewe deur die integrasie van wetenskaplike navorsing en bestuur verbeter nie, maar ook vooraf die gebied van rivieroewer-ekologie.
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Bellchamber, Sara B. "Simulating the effects of riparian zone delineation and management practices on landscape pattern and timber production." Diss., Columbia, Mo. : University of Missouri-Columbia, 2004. http://hdl.handle.net/10355/4106.
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Thesis (M.S.) University of Missouri-Columbia, 2004.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (June 29, 2006) Vita. Includes bibliographical references.
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Docker, Benjamin Brougham. "Biotechnical engineering on alluvial riverbanks of southeastern Australia: A quantified model of the earth-reinforcing properties of some native riparian trees." Thesis, The University of Sydney, 2003. http://hdl.handle.net/2123/1688.
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It is generally accepted that tree roots can reinforce soil and improve the stability of vegetated slopes. Tree root reinforcement is also recognised in riverbanks although the contribution that the roots make to bank stability has rarely been assessed due to the reluctance of geomorphologists to examine riverbank stability by geomechanical methods that allow for the inclusion of quantified biotechnical parameters. This study investigates the interaction between alluvial soil and the roots of four southeastern Australian riparian trees. It quantifies the amount and distribution of root reinforcement present beneath typically vegetated riverbanks of the upper Nepean River, New South Wales, and examines the effect of the reinforcement on the stability of these banks. The ability of a tree to reinforce the soil is limited by the spatial distribution of its root system and the strength that the roots impart to the soil during shear. These two parameters were determined for the following four species of native riparian tree: Casuarina glauca, Eucalyptus amplifolia, Eucalyptus elata, and Acacia floribunda. The four species all exhibit a progressive reduction in the quantity of root material both with increasing depth and with increasing lateral distance from the tree stem. In the vertical direction there are two distinct zones that can be described. The first occurs from between 0 and approximately 15 % of the maximum vertical depth and consists of approximately 80 % of the total root material quantity. In this zone the root system consists of both vertical and lateral roots, the size and density of which varies between species. The second zone occurs below approximately 15 % of the maximum vertical depth and consists primarily of vertical roots. The quantity of root material in this zone decreases exponentially with depth due to the taper of individual roots. The earth reinforcement potential in terms of both geometric extent and the quantity of root material expressed as the Root Area Ratio (RAR) varies significantly from species to species. E. elata exhibited the highest values of RAR in soil zones beneath it while E. amplifolia reinforced a greater volume of soil than any of the other species examined. The increased shear resistance (Sr) of alluvial soil containing roots was measured by direct in-situ shear tests on soil blocks beneath a plantation. For three of the species (C. glauca, E. amplifolia, E. elata) Sr increased with increasing RAR measured at the shear plane, in a similar linear relationship. The shear resistance provided by A. floribunda roots also increased with increasing RAR at the shear plane but at a much greater rate than for the other three species. This is attributable to A. floribunda’s greater root tensile strength and therefore pull-out resistance, as well as its smaller root diameters at comparative RARs which resulted in a greater proportion of roots reaching full tensile strength within the confines of the test. Tree roots fail progressively in this system. Therefore determining the increased shear strength from the sum of the pull-out or tensile strengths of all individual roots and Waldron’s (1977) and Wu et al’s (1979) simple root model, would result in substantial over estimates of the overall strength of the soil-root system. The average difference between Sr calculated in this manner and that measured from direct in-situ shear tests is 10.9 kPa for C. glauca, 19.0 kPa for E. amplifolia, 19.3 kPa for E. elata, and 8.8 kPa for A. floribunda. A riverbank stability analysis incorporating the root reinforcement effect was conducted using a predictive model of the spatial distribution of root reinforcement beneath riparian trees within the study area. The model is based on measurements of juveniles and observations of the rooting habits of mature trees. It indicates that while the presence of vegetation on riverbank profiles has the potential to increase stability by up to 105 %, the relative increase depends heavily on the actual vegetation type, density, and location on the bank profile. Of the species examined in this study the greatest potential for improved riverbank stability is provided by E. amplifolia, followed by E. elata, A. floribunda, and C. glauca. The presence of trees on banks of the Nepean River has the potential to raise the critical factor of safety (FoS) from a value that is very unstable (0.85) to significantly above 1.00 even when the banks are completely saturated and subject to rapid draw-down. It is likely then that the period of intense bank instability observed within this environment between 1947 and 1992 would not have taken place had the riparian vegetation not been cleared prior to the onset of wetter climatic conditions. Typical ‘present-day’ profiles are critically to marginally stable. The introduction of vegetation could improve stability by raising the FoS up to 1.68 however the selection of revegetation species is crucial. With the placement of a large growing Eucalypt at a suitable spacing (around 3-5 m) the choice of smaller understorey trees and shrubs is less important. The effect of riparian vegetation on bank stability has important implications for channel morphological change. This study quantifies the mechanical earth reinforcing effect of some native riparian trees, thus allowing for improved deterministic assessment of historical channel change and an improved basis for future riverine management.
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Christoferson, Laurel Lynn 1969. "Defining breeding habitat for painted redstarts, solitary vireos, and western wood-pewees in riparian areas of southeastern Arizona." Thesis, The University of Arizona, 1996. http://hdl.handle.net/10150/278573.
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Determination of reproductive success in birds is important for understanding population dynamics, habitat quality, and features necessary for breeding. I incorporated behavioral observations, nest monitoring, and a reproductive ranking index (Vickery et al. 1992) to (1) categorize painted redstarts (Myioborus pictus), solitary vireos (Vireo solitarus plumbeus), and western wood-pewees (Contopus sordidulus) as breeders or nonbreeders, (2) locate nests, (3) monitor nest status, and (4) determine nest success and parasitism rates in 14 canyons of the Huachuca and Santa Rita mountains, Arizona during 1994-1995. I built logistic regression models for each species that correctly classified 58-68% of successful nesters from unsuccessful nesters, 62-85% of areas used by birds from random sites along the canyons, and at each nest, I correctly classified 39-60% of successful nest sites from unsuccessful nest sites and 87-95% of nest sites from nonoverlapping sites in areas of use. These models can be used to determine areas that would promote occupancy and successful nesting by these 3 species.
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Phillips, Patrick, and Aregai Tecle. "An Analysis of Human Settlement Impacts on Riparian Areas in the Beaver Creek Watershed in North Central Arizona." Arizona-Nevada Academy of Science, 2002. http://hdl.handle.net/10150/296572.
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