{"id":{"repo_id":"unr","oai_identifier":"oai:scholarwolf.unr.edu:11714/4197"},"canonical_url":"https://search.dev.ndltd.org/etd/unr/oai:scholarwolf.unr.edu:11714/4197","repository":{"repo_id":"unr","name":"University of Nevada - Reno","base_url":"https://scholarwolf.unr.edu/server/oai/request"},"display":{"title":"Plant Community Invasibility in Riparian Landscapes: Role of Disturbance, Geomorphology, and Life History Traits","abstract":"The majority of this dissertation focuses on the ecology of non-native, invasive riparian plants, river regulation, and the potential for restoration. For chapters one and two, I researched different aspects of the <italic>Tamarix</italic> invasion along the Colorado River through the Grand Canyon. Tree-ring analyses and surveys for <italic>Tamarix</italic> seedling establishment and adult density were used to understand the influences of hydrologic, climatic, and geomorphic factors on <italic>Tamarix</italic> establishment and persistence. The second chapter examines the spatial association of beavers, <italic>Tamarix</italic>, and <italic>Salix</italic> and the hypothesis that beavers may contribute to <italic>Tamarix</italic> dominance through selective foraging of <italic>Salix</italic>. The third chapter describes a regional survey of river segments in the southwestern US. Through this survey I addressed relationships between flow regime, climatic factors, and changes in flow regime with dominance of native and non-native woody species. Chapter four provides seven principles for riparian restoration for restoration practitioners. This chapter is based on a comprehensive literature review of riparian research. Important questions addressed by this study include: 1) How has the regulated flow regime along the Colorado River in the Grand Canyon influenced <italic>Tamarix</italic> establishment and persistence? 2) Do bi-trophic interactions contribute to <italic>Tamarix</italic> dominance? 3) How does the degree of flow alteration affect dominance of non-native, invasive woody plants?","abstract_html":"The majority of this dissertation focuses on the ecology of non-native, invasive riparian plants, river regulation, and the potential for restoration. For chapters one and two, I researched different aspects of the &lt;italic&gt;Tamarix&lt;/italic&gt; invasion along the Colorado River through the Grand Canyon. Tree-ring analyses and surveys for &lt;italic&gt;Tamarix&lt;/italic&gt; seedling establishment and adult density were used to understand the influences of hydrologic, climatic, and geomorphic factors on &lt;italic&gt;Tamarix&lt;/italic&gt; establishment and persistence. The second chapter examines the spatial association of beavers, &lt;italic&gt;Tamarix&lt;/italic&gt;, and &lt;italic&gt;Salix&lt;/italic&gt; and the hypothesis that beavers may contribute to &lt;italic&gt;Tamarix&lt;/italic&gt; dominance through selective foraging of &lt;italic&gt;Salix&lt;/italic&gt;. The third chapter describes a regional survey of river segments in the southwestern US. Through this survey I addressed relationships between flow regime, climatic factors, and changes in flow regime with dominance of native and non-native woody species. Chapter four provides seven principles for riparian restoration for restoration practitioners. This chapter is based on a comprehensive literature review of riparian research. Important questions addressed by this study include: 1) How has the regulated flow regime along the Colorado River in the Grand Canyon influenced &lt;italic&gt;Tamarix&lt;/italic&gt; establishment and persistence? 2) Do bi-trophic interactions contribute to &lt;italic&gt;Tamarix&lt;/italic&gt; dominance? 3) How does the degree of flow alteration affect dominance of non-native, invasive woody plants?","abstract_has_math":false,"creators":["Mortenson, Susan G"],"institution":null,"degree_name":null,"degree_level":"Doctorate Degree","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Weisberg, Peter J."],"committee_chairs":[],"committee_members":["Chambers, Jeanne C","Leger, Elizabeth A","Bullard, Thomas F","Sparrow, Ashley D"],"year":2009,"date_issued":"2009","date_published":"2009","updated_at":"2026-07-27T21:47:47Z","subjects":["Biotic invasions","dendrochronology","flow regime","hydrogeomorphology","Rivers","Tamarix"],"languages":[],"rights":["In Copyright(All Rights Reserved)"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11714/4197","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Weisberg, Peter J."]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Chambers, Jeanne C","Leger, Elizabeth A","Bullard, Thomas F","Sparrow, Ashley D"]},{"key":"dc:creator","label":"Author","values":["Mortenson, Susan G"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-09-06T17:25:45Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-09-06T17:25:45Z"]},{"key":"dc:date.issued","label":"Date","values":["2009"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Doctorate Degree"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biotic invasions","dendrochronology","flow regime","hydrogeomorphology","Rivers","Tamarix"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["In Copyright(All Rights Reserved)"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11714/4197"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The majority of this dissertation focuses on the ecology of non-native, invasive riparian plants, river regulation, and the potential for restoration. For chapters one and two, I researched different aspects of the <italic>Tamarix</italic> invasion along the Colorado River through the Grand Canyon. Tree-ring analyses and surveys for <italic>Tamarix</italic> seedling establishment and adult density were used to understand the influences of hydrologic, climatic, and geomorphic factors on <italic>Tamarix</italic> establishment and persistence. The second chapter examines the spatial association of beavers, <italic>Tamarix</italic>, and <italic>Salix</italic> and the hypothesis that beavers may contribute to <italic>Tamarix</italic> dominance through selective foraging of <italic>Salix</italic>. The third chapter describes a regional survey of river segments in the southwestern US. Through this survey I addressed relationships between flow regime, climatic factors, and changes in flow regime with dominance of native and non-native woody species. Chapter four provides seven principles for riparian restoration for restoration practitioners. This chapter is based on a comprehensive literature review of riparian research. Important questions addressed by this study include: 1) How has the regulated flow regime along the Colorado River in the Grand Canyon influenced <italic>Tamarix</italic> establishment and persistence? 2) Do bi-trophic interactions contribute to <italic>Tamarix</italic> dominance? 3) How does the degree of flow alteration affect dominance of non-native, invasive woody plants?"]},{"key":"dc:format","label":"Dc Format","values":["PDF"]},{"key":"dc:title","label":"Title","values":["Plant Community Invasibility in Riparian Landscapes: Role of Disturbance, Geomorphology, and Life History Traits"]}]}],"canonical_facts":{"dc:contributor.advisor":["Weisberg, Peter J."],"dc:contributor.committeemember":["Chambers, Jeanne C","Leger, Elizabeth A","Bullard, Thomas F","Sparrow, Ashley D"],"dc:creator":["Mortenson, Susan G"],"dc:date.accessioned":["2018-09-06T17:25:45Z"],"dc:date.available":["2018-09-06T17:25:45Z"],"dc:date.issued":["2009"],"dc:description.abstract":["The majority of this dissertation focuses on the ecology of non-native, invasive riparian plants, river regulation, and the potential for restoration. For chapters one and two, I researched different aspects of the <italic>Tamarix</italic> invasion along the Colorado River through the Grand Canyon. Tree-ring analyses and surveys for <italic>Tamarix</italic> seedling establishment and adult density were used to understand the influences of hydrologic, climatic, and geomorphic factors on <italic>Tamarix</italic> establishment and persistence. The second chapter examines the spatial association of beavers, <italic>Tamarix</italic>, and <italic>Salix</italic> and the hypothesis that beavers may contribute to <italic>Tamarix</italic> dominance through selective foraging of <italic>Salix</italic>. The third chapter describes a regional survey of river segments in the southwestern US. Through this survey I addressed relationships between flow regime, climatic factors, and changes in flow regime with dominance of native and non-native woody species. Chapter four provides seven principles for riparian restoration for restoration practitioners. This chapter is based on a comprehensive literature review of riparian research. Important questions addressed by this study include: 1) How has the regulated flow regime along the Colorado River in the Grand Canyon influenced <italic>Tamarix</italic> establishment and persistence? 2) Do bi-trophic interactions contribute to <italic>Tamarix</italic> dominance? 3) How does the degree of flow alteration affect dominance of non-native, invasive woody plants?"],"dc:format":["PDF"],"dc:identifier.uri":["http://hdl.handle.net/11714/4197"],"dc:rights":["In Copyright(All Rights Reserved)"],"dc:subject":["Biotic invasions","dendrochronology","flow regime","hydrogeomorphology","Rivers","Tamarix"],"dc:title":["Plant Community Invasibility in Riparian Landscapes: Role of Disturbance, Geomorphology, and Life History Traits"],"dc:type":["Dissertation"],"thesis:degree_level":["Doctorate Degree"]},"updated_at":"2026-07-27T21:47:47Z"}