HISTORIC CHANGES (1941-2008) IN SIDE CHANNEL AND BACKWATER HABITATS ON AN UNCHANNELIZED REACH OF THE MISSOURI RIVER
ABSTRACT Flow regulation has had pervasive effects on aquatic ecosystems within the world's large rivers. While channelization on the lower Missouri River has led to major changes in the river and its floodplain, including the loss of shallow water habitats, effects of upstream dams on unchanne...
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| Veröffentlicht in: | River research and applications 2013-05, Vol.29 (4), p.493-501 |
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| creator | Yager, L. A. Dixon, M. D. Cowman, T. C. Soluk, D. A. |
| description | ABSTRACT
Flow regulation has had pervasive effects on aquatic ecosystems within the world's large rivers. While channelization on the lower Missouri River has led to major changes in the river and its floodplain, including the loss of shallow water habitats, effects of upstream dams on unchannelized reaches on the Missouri have not been formally assessed. We quantified changes in the number and size of off‐channel habitats, specifically backwaters and side channels, on the 95‐km unchannelized reach of the Missouri below Gavins Point Dam (Yankton, South Dakota) using historical (1941, 1983–1985, 2008) aerial imagery. Total and mean areas of side channels declined by 77% and 37% and total and mean length decreased by 79% and 42% from 1941 to 2008. Total area of backwaters increased by 40% from 1941 to 2008, whereas mean area decreased by 36%. Our findings suggest that sharp declines in the area and length of side channels have occurred on this unchannelized remnant reach of the Missouri River, with likely significant impacts on aquatic ecosystem processes. Copyright © 2011 John Wiley & Sons, Ltd. |
| doi_str_mv | 10.1002/rra.1614 |
| format | Article |
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Flow regulation has had pervasive effects on aquatic ecosystems within the world's large rivers. While channelization on the lower Missouri River has led to major changes in the river and its floodplain, including the loss of shallow water habitats, effects of upstream dams on unchannelized reaches on the Missouri have not been formally assessed. We quantified changes in the number and size of off‐channel habitats, specifically backwaters and side channels, on the 95‐km unchannelized reach of the Missouri below Gavins Point Dam (Yankton, South Dakota) using historical (1941, 1983–1985, 2008) aerial imagery. Total and mean areas of side channels declined by 77% and 37% and total and mean length decreased by 79% and 42% from 1941 to 2008. Total area of backwaters increased by 40% from 1941 to 2008, whereas mean area decreased by 36%. Our findings suggest that sharp declines in the area and length of side channels have occurred on this unchannelized remnant reach of the Missouri River, with likely significant impacts on aquatic ecosystem processes. Copyright © 2011 John Wiley & Sons, Ltd.</description><identifier>ISSN: 1535-1459</identifier><identifier>EISSN: 1535-1467</identifier><identifier>DOI: 10.1002/rra.1614</identifier><language>eng</language><publisher>Chichester: Blackwell Publishing Ltd</publisher><subject>Animal and plant ecology ; Animal, plant and microbial ecology ; Applied sciences ; Biological and medical sciences ; Buildings. Public works ; channel incision ; Channels ; Control ; dams ; Ecosystems ; Exact sciences and technology ; flow regulation ; Fresh water ecosystems ; Freshwater ; Fundamental and applied biological sciences. Psychology ; Habitats ; Historic ; Hydraulic constructions ; off-channel habitats ; River flow control. Flood control ; Rivers ; Shallow water ; Synecology</subject><ispartof>River research and applications, 2013-05, Vol.29 (4), p.493-501</ispartof><rights>Copyright © 2011 John Wiley & Sons, Ltd.</rights><rights>2014 INIST-CNRS</rights><rights>Copyright © 2013 John Wiley & Sons, Ltd.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4614-58e49df46692d7dcf893d4fb1a4506ddc7785ffb79c397dd2cfbcb24abe1b3213</citedby><cites>FETCH-LOGICAL-c4614-58e49df46692d7dcf893d4fb1a4506ddc7785ffb79c397dd2cfbcb24abe1b3213</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Frra.1614$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Frra.1614$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,777,781,1412,27905,27906,45555,45556</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27283740$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Yager, L. A.</creatorcontrib><creatorcontrib>Dixon, M. D.</creatorcontrib><creatorcontrib>Cowman, T. C.</creatorcontrib><creatorcontrib>Soluk, D. A.</creatorcontrib><title>HISTORIC CHANGES (1941-2008) IN SIDE CHANNEL AND BACKWATER HABITATS ON AN UNCHANNELIZED REACH OF THE MISSOURI RIVER</title><title>River research and applications</title><addtitle>River Res. Applic</addtitle><description>ABSTRACT
Flow regulation has had pervasive effects on aquatic ecosystems within the world's large rivers. While channelization on the lower Missouri River has led to major changes in the river and its floodplain, including the loss of shallow water habitats, effects of upstream dams on unchannelized reaches on the Missouri have not been formally assessed. We quantified changes in the number and size of off‐channel habitats, specifically backwaters and side channels, on the 95‐km unchannelized reach of the Missouri below Gavins Point Dam (Yankton, South Dakota) using historical (1941, 1983–1985, 2008) aerial imagery. Total and mean areas of side channels declined by 77% and 37% and total and mean length decreased by 79% and 42% from 1941 to 2008. Total area of backwaters increased by 40% from 1941 to 2008, whereas mean area decreased by 36%. Our findings suggest that sharp declines in the area and length of side channels have occurred on this unchannelized remnant reach of the Missouri River, with likely significant impacts on aquatic ecosystem processes. Copyright © 2011 John Wiley & Sons, Ltd.</description><subject>Animal and plant ecology</subject><subject>Animal, plant and microbial ecology</subject><subject>Applied sciences</subject><subject>Biological and medical sciences</subject><subject>Buildings. Public works</subject><subject>channel incision</subject><subject>Channels</subject><subject>Control</subject><subject>dams</subject><subject>Ecosystems</subject><subject>Exact sciences and technology</subject><subject>flow regulation</subject><subject>Fresh water ecosystems</subject><subject>Freshwater</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Habitats</subject><subject>Historic</subject><subject>Hydraulic constructions</subject><subject>off-channel habitats</subject><subject>River flow control. Flood control</subject><subject>Rivers</subject><subject>Shallow water</subject><subject>Synecology</subject><issn>1535-1459</issn><issn>1535-1467</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqF0e9r1DAYwPEiCs4p7E8IiDBfdOZXk_Zl1-tdg2fq2p4D34Q0TaGzu5vJDt1_b28rhwiyVwk8H77w8ATBGYIXCEL8yTl9gRiiL4ITFJEoRJTxl8d_lLwO3nh_AyHicRKfBL4QdVNWIgNZkcpVXoNzlFAUYgjjj0BIUItF_jiT-RqkcgEu0-zzddrkFSjSS9GkTQ1KOU3ARs5MfM8XoMrTrADlEjRFDr6Iui43lQCV-JZXb4NXvR69fTe_p8FmmTdZEa7LlcjSdWjotEAYxZYmXU8ZS3DHO9PHCelo3yJNI8i6znAeR33f8sSQhHcdNn1rWkx1a1FLMCKnwflT987tfu6tv1e3gzd2HPXW7vZeIc4mxTCGz1NKKEQxZHii7_-hN7u9206LKERwjBjn7K-gcTvvne3VnRtutXtQCKrDodR0KHU41EQ_zEHtjR57p7dm8EePOY4Jp4dk-OR-DaN9-G9PVVU6d2c_-Hv7--i1-6EYJzxS13KlJLlafq1lo5bkD_c3o84</recordid><startdate>201305</startdate><enddate>201305</enddate><creator>Yager, L. A.</creator><creator>Dixon, M. D.</creator><creator>Cowman, T. C.</creator><creator>Soluk, D. A.</creator><general>Blackwell Publishing Ltd</general><general>Wiley</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>201305</creationdate><title>HISTORIC CHANGES (1941-2008) IN SIDE CHANNEL AND BACKWATER HABITATS ON AN UNCHANNELIZED REACH OF THE MISSOURI RIVER</title><author>Yager, L. A. ; Dixon, M. D. ; Cowman, T. C. ; Soluk, D. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4614-58e49df46692d7dcf893d4fb1a4506ddc7785ffb79c397dd2cfbcb24abe1b3213</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Animal and plant ecology</topic><topic>Animal, plant and microbial ecology</topic><topic>Applied sciences</topic><topic>Biological and medical sciences</topic><topic>Buildings. Public works</topic><topic>channel incision</topic><topic>Channels</topic><topic>Control</topic><topic>dams</topic><topic>Ecosystems</topic><topic>Exact sciences and technology</topic><topic>flow regulation</topic><topic>Fresh water ecosystems</topic><topic>Freshwater</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Habitats</topic><topic>Historic</topic><topic>Hydraulic constructions</topic><topic>off-channel habitats</topic><topic>River flow control. Flood control</topic><topic>Rivers</topic><topic>Shallow water</topic><topic>Synecology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yager, L. A.</creatorcontrib><creatorcontrib>Dixon, M. D.</creatorcontrib><creatorcontrib>Cowman, T. C.</creatorcontrib><creatorcontrib>Soluk, D. 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Flow regulation has had pervasive effects on aquatic ecosystems within the world's large rivers. While channelization on the lower Missouri River has led to major changes in the river and its floodplain, including the loss of shallow water habitats, effects of upstream dams on unchannelized reaches on the Missouri have not been formally assessed. We quantified changes in the number and size of off‐channel habitats, specifically backwaters and side channels, on the 95‐km unchannelized reach of the Missouri below Gavins Point Dam (Yankton, South Dakota) using historical (1941, 1983–1985, 2008) aerial imagery. Total and mean areas of side channels declined by 77% and 37% and total and mean length decreased by 79% and 42% from 1941 to 2008. Total area of backwaters increased by 40% from 1941 to 2008, whereas mean area decreased by 36%. Our findings suggest that sharp declines in the area and length of side channels have occurred on this unchannelized remnant reach of the Missouri River, with likely significant impacts on aquatic ecosystem processes. Copyright © 2011 John Wiley & Sons, Ltd.</abstract><cop>Chichester</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/rra.1614</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Animal and plant ecology Animal, plant and microbial ecology Applied sciences Biological and medical sciences Buildings. Public works channel incision Channels Control dams Ecosystems Exact sciences and technology flow regulation Fresh water ecosystems Freshwater Fundamental and applied biological sciences. Psychology Habitats Historic Hydraulic constructions off-channel habitats River flow control. Flood control Rivers Shallow water Synecology |
| title | HISTORIC CHANGES (1941-2008) IN SIDE CHANNEL AND BACKWATER HABITATS ON AN UNCHANNELIZED REACH OF THE MISSOURI RIVER |
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