Channel response in a semiarid stream to removal of tamarisk and Russian olive
We report observed short‐term (3 years) channel adjustment in an incised, semiarid stream to the removal of invasive plants, tamarisk (Tamarix spp.) and Russian olive (Elaeagnus angustifolia) by (1) removing the above‐ground portion of the plant (cut‐stump method) and (2) removing the entire plant (...
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| Veröffentlicht in: | Water resources research 2011-02, Vol.47 (2), p.n/a |
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| description | We report observed short‐term (3 years) channel adjustment in an incised, semiarid stream to the removal of invasive plants, tamarisk (Tamarix spp.) and Russian olive (Elaeagnus angustifolia) by (1) removing the above‐ground portion of the plant (cut‐stump method) and (2) removing the entire plant (whole‐plant method). The stream flows through Canyon de Chelly National Monument in Arizona, USA., draining an ∼1500 km2 catchment. Average channel width is 13 m; average thalweg depth is 2–3 m, although channel banks exceed 8 m locally. Channels adjusted primarily through widening, with significantly larger changes occurring in whole‐plant removal reaches; however, neither plant removal method elicited large‐scale bank destabilization, and the channels remained entrenched. Particular site conditions limiting large‐scale destabilization include the absence of sufficient streamflow magnitudes, the presence of clay layers at the bank toe, the remaining presence of native vegetation, and the entrenched morphology. Our findings serve as a cautionary note regarding the temporal and spatial variability in channel response to invasive plant removal and underscore the importance of considering site‐specific conditions in future restoration projects that include invasive plant removal. |
| doi_str_mv | 10.1029/2009WR008741 |
| format | Article |
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The stream flows through Canyon de Chelly National Monument in Arizona, USA., draining an ∼1500 km2 catchment. Average channel width is 13 m; average thalweg depth is 2–3 m, although channel banks exceed 8 m locally. Channels adjusted primarily through widening, with significantly larger changes occurring in whole‐plant removal reaches; however, neither plant removal method elicited large‐scale bank destabilization, and the channels remained entrenched. Particular site conditions limiting large‐scale destabilization include the absence of sufficient streamflow magnitudes, the presence of clay layers at the bank toe, the remaining presence of native vegetation, and the entrenched morphology. Our findings serve as a cautionary note regarding the temporal and spatial variability in channel response to invasive plant removal and underscore the importance of considering site‐specific conditions in future restoration projects that include invasive plant removal.</description><identifier>ISSN: 0043-1397</identifier><identifier>EISSN: 1944-7973</identifier><identifier>DOI: 10.1029/2009WR008741</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Canyons ; channel morphology ; Climate change ; Drought ; Earth ; Human influences ; Hydrology ; Invasive plants ; Morphology ; National monuments ; Precipitation ; riparian vegetation ; Soil erosion ; Statistical analysis ; Stream discharge ; Stream flow ; Summer ; tamarisk ; Thalweg ; Vacations ; Vegetation ; Winter</subject><ispartof>Water resources research, 2011-02, Vol.47 (2), p.n/a</ispartof><rights>Copyright 2011 by the American Geophysical Union.</rights><rights>Copyright 2011 by American Geophysical Union</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a4059-42f69ce5f9a522d5cd1d4030dc77de6c44daf8a4a437c6086c1e320d552ef2ae3</citedby><cites>FETCH-LOGICAL-a4059-42f69ce5f9a522d5cd1d4030dc77de6c44daf8a4a437c6086c1e320d552ef2ae3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2009WR008741$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2009WR008741$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,11493,27901,27902,45550,45551,46443,46867</link.rule.ids></links><search><creatorcontrib>Jaeger, Kristin L.</creatorcontrib><creatorcontrib>Wohl, Ellen</creatorcontrib><title>Channel response in a semiarid stream to removal of tamarisk and Russian olive</title><title>Water resources research</title><addtitle>Water Resour. Res</addtitle><description>We report observed short‐term (3 years) channel adjustment in an incised, semiarid stream to the removal of invasive plants, tamarisk (Tamarix spp.) and Russian olive (Elaeagnus angustifolia) by (1) removing the above‐ground portion of the plant (cut‐stump method) and (2) removing the entire plant (whole‐plant method). The stream flows through Canyon de Chelly National Monument in Arizona, USA., draining an ∼1500 km2 catchment. Average channel width is 13 m; average thalweg depth is 2–3 m, although channel banks exceed 8 m locally. Channels adjusted primarily through widening, with significantly larger changes occurring in whole‐plant removal reaches; however, neither plant removal method elicited large‐scale bank destabilization, and the channels remained entrenched. Particular site conditions limiting large‐scale destabilization include the absence of sufficient streamflow magnitudes, the presence of clay layers at the bank toe, the remaining presence of native vegetation, and the entrenched morphology. Our findings serve as a cautionary note regarding the temporal and spatial variability in channel response to invasive plant removal and underscore the importance of considering site‐specific conditions in future restoration projects that include invasive plant removal.</description><subject>Canyons</subject><subject>channel morphology</subject><subject>Climate change</subject><subject>Drought</subject><subject>Earth</subject><subject>Human influences</subject><subject>Hydrology</subject><subject>Invasive plants</subject><subject>Morphology</subject><subject>National monuments</subject><subject>Precipitation</subject><subject>riparian vegetation</subject><subject>Soil erosion</subject><subject>Statistical analysis</subject><subject>Stream discharge</subject><subject>Stream flow</subject><subject>Summer</subject><subject>tamarisk</subject><subject>Thalweg</subject><subject>Vacations</subject><subject>Vegetation</subject><subject>Winter</subject><issn>0043-1397</issn><issn>1944-7973</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kE1Lw0AQhhdRsFZv_oDFs9HZ7-xRgrZCqRKUipdlyW4wbZrU3bTaf28kIp48zWGe553hReicwBUBqq8pgF7kAKni5ACNiOY8UVqxQzQC4CwhTKtjdBLjEoBwIdUIzbM32zS-xsHHTdtEj6sGWxz9urKhcjh2wds17toeWLc7W-O2xJ1d98u4wrZxON_GWNkGt3W186foqLR19Gc_c4ye726fsmkye5jcZzezxHIQOuG0lLrwotRWUOpE4YjjwMAVSjkvC86dLVPLLWeqkJDKgnhGwQlBfUmtZ2N0MeRuQvu-9bEzy3Ybmv6kSSXTkktGe-hygIrQxhh8aTah6j_fGwLmuzDzt7AeZwP-UdV-_y9rFnmWEypA91YyWFXs_OevZcPKSMWUMIv5xCgxnb7M80fzyr4A5xl7uQ</recordid><startdate>201102</startdate><enddate>201102</enddate><creator>Jaeger, Kristin L.</creator><creator>Wohl, 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Res</addtitle><date>2011-02</date><risdate>2011</risdate><volume>47</volume><issue>2</issue><epage>n/a</epage><issn>0043-1397</issn><eissn>1944-7973</eissn><abstract>We report observed short‐term (3 years) channel adjustment in an incised, semiarid stream to the removal of invasive plants, tamarisk (Tamarix spp.) and Russian olive (Elaeagnus angustifolia) by (1) removing the above‐ground portion of the plant (cut‐stump method) and (2) removing the entire plant (whole‐plant method). The stream flows through Canyon de Chelly National Monument in Arizona, USA., draining an ∼1500 km2 catchment. Average channel width is 13 m; average thalweg depth is 2–3 m, although channel banks exceed 8 m locally. Channels adjusted primarily through widening, with significantly larger changes occurring in whole‐plant removal reaches; however, neither plant removal method elicited large‐scale bank destabilization, and the channels remained entrenched. Particular site conditions limiting large‐scale destabilization include the absence of sufficient streamflow magnitudes, the presence of clay layers at the bank toe, the remaining presence of native vegetation, and the entrenched morphology. Our findings serve as a cautionary note regarding the temporal and spatial variability in channel response to invasive plant removal and underscore the importance of considering site‐specific conditions in future restoration projects that include invasive plant removal.</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2009WR008741</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| source | Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Canyons channel morphology Climate change Drought Earth Human influences Hydrology Invasive plants Morphology National monuments Precipitation riparian vegetation Soil erosion Statistical analysis Stream discharge Stream flow Summer tamarisk Thalweg Vacations Vegetation Winter |
| title | Channel response in a semiarid stream to removal of tamarisk and Russian olive |
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