Small artificial impoundments have big implications for hydrology and freshwater biodiversity
Headwater streams are critical for freshwater ecosystems. Global and continental studies consistently show major dams as dominant sources of hydrological stress threatening biodiversity in the world’s major rivers, but cumulative impacts from small artificial impoundments (SAIs) concentrated in head...
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| Veröffentlicht in: | Frontiers in ecology and the environment 2022-04, Vol.20 (3), p.141-146 |
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| container_title | Frontiers in ecology and the environment |
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| creator | Morden, Robert Horne, Avril Bond, Nick R Nathan, Rory Olden, Julian D |
| description | Headwater streams are critical for freshwater ecosystems. Global and continental studies consistently show major dams as dominant sources of hydrological stress threatening biodiversity in the world’s major rivers, but cumulative impacts from small artificial impoundments (SAIs) concentrated in headwater streams have rarely been acknowledged. Using the Murray Darling River basin (Australia) and the Arkansas River basin (US) as case studies, we examined the hydrological impacts of SAIs. The extent of their influence is considerable, altering hydrology in 280–380% more waterways as compared to major dams. Hydrological impacts are concentrated in smaller streams (catchment area |
| doi_str_mv | 10.1002/fee.2454 |
| format | Article |
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Global and continental studies consistently show major dams as dominant sources of hydrological stress threatening biodiversity in the world’s major rivers, but cumulative impacts from small artificial impoundments (SAIs) concentrated in headwater streams have rarely been acknowledged. Using the Murray Darling River basin (Australia) and the Arkansas River basin (US) as case studies, we examined the hydrological impacts of SAIs. The extent of their influence is considerable, altering hydrology in 280–380% more waterways as compared to major dams. Hydrological impacts are concentrated in smaller streams (catchment area <100 km²), raising concerns that the often diverse and highly endemic biota found in these systems may be under threat. 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Adjusting existing biodiversity planning and management approaches to address the cumulative effects of many small and widely distributed artificial impoundments presents a rapidly emerging challenge for ecologically sustainable water management.</description><subject>Aquatic ecosystems</subject><subject>Biodiversity</subject><subject>Biota</subject><subject>Catchment areas</subject><subject>Creeks & streams</subject><subject>Dams</subject><subject>Freshwater ecosystems</subject><subject>Hydrology</subject><subject>RESEARCH COMMUNICATIONS</subject><subject>River basins</subject><subject>Rivers</subject><subject>Streams</subject><subject>Sustainability management</subject><subject>Water management</subject><subject>Waterways</subject><issn>1540-9295</issn><issn>1540-9309</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><sourceid>WIN</sourceid><recordid>eNp10MtKAzEUBuAgCtYq-AJCwI2bqZPLXLKU0qpQcKEuJWSSM23KdFKTacu8vSlT3bnKIXycy4_QLUknJE3pYw0woTzjZ2hEMp4mgqXi_LemIrtEVyGso2Q0YyP09b5RTYOV72xttVUNtput27VmA20X8ErtAVd2efxtrFaddW3AtfN41RvvGrfssWoNrj2E1UF14KN2xu7BB9v11-iiVk2Am9M7Rp_z2cf0JVm8Pb9OnxaJZlzwREFpjIBCkUxVpixAa8ENZJTWQhelUlxUudFVVVTMZHHxEoDwlAIDrXKVsTG6H_puvfveQejk2u18G0dKmvN4tiDx4DF6GJT2LgQPtdx6u1G-lySVx_BkDE8ew4s0GejBNtD_6-R8Njv5u8GvQ-f8n6cFoSXLKfsBgw98Zg</recordid><startdate>20220401</startdate><enddate>20220401</enddate><creator>Morden, Robert</creator><creator>Horne, Avril</creator><creator>Bond, Nick R</creator><creator>Nathan, Rory</creator><creator>Olden, Julian D</creator><general>John Wiley and Sons, Inc</general><general>Ecological Society of America</general><scope>24P</scope><scope>WIN</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>20220401</creationdate><title>Small artificial impoundments have big implications for hydrology and freshwater biodiversity</title><author>Morden, Robert ; Horne, Avril ; Bond, Nick R ; Nathan, Rory ; Olden, Julian D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3494-ae8dd9e7a15abd87ecc94de522f9c78aa49b6dcbb7b3d53258ee1402e3eca6a53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aquatic ecosystems</topic><topic>Biodiversity</topic><topic>Biota</topic><topic>Catchment areas</topic><topic>Creeks & streams</topic><topic>Dams</topic><topic>Freshwater ecosystems</topic><topic>Hydrology</topic><topic>RESEARCH COMMUNICATIONS</topic><topic>River basins</topic><topic>Rivers</topic><topic>Streams</topic><topic>Sustainability management</topic><topic>Water management</topic><topic>Waterways</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Morden, Robert</creatorcontrib><creatorcontrib>Horne, Avril</creatorcontrib><creatorcontrib>Bond, Nick R</creatorcontrib><creatorcontrib>Nathan, Rory</creatorcontrib><creatorcontrib>Olden, Julian D</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>Wiley Online Library Free Content</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Frontiers in ecology and the environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morden, Robert</au><au>Horne, Avril</au><au>Bond, Nick R</au><au>Nathan, Rory</au><au>Olden, Julian D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Small artificial impoundments have big implications for hydrology and freshwater biodiversity</atitle><jtitle>Frontiers in ecology and the environment</jtitle><date>2022-04-01</date><risdate>2022</risdate><volume>20</volume><issue>3</issue><spage>141</spage><epage>146</epage><pages>141-146</pages><issn>1540-9295</issn><eissn>1540-9309</eissn><abstract>Headwater streams are critical for freshwater ecosystems. Global and continental studies consistently show major dams as dominant sources of hydrological stress threatening biodiversity in the world’s major rivers, but cumulative impacts from small artificial impoundments (SAIs) concentrated in headwater streams have rarely been acknowledged. Using the Murray Darling River basin (Australia) and the Arkansas River basin (US) as case studies, we examined the hydrological impacts of SAIs. The extent of their influence is considerable, altering hydrology in 280–380% more waterways as compared to major dams. Hydrological impacts are concentrated in smaller streams (catchment area <100 km²), raising concerns that the often diverse and highly endemic biota found in these systems may be under threat. 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| ispartof | Frontiers in ecology and the environment, 2022-04, Vol.20 (3), p.141-146 |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Aquatic ecosystems Biodiversity Biota Catchment areas Creeks & streams Dams Freshwater ecosystems Hydrology RESEARCH COMMUNICATIONS River basins Rivers Streams Sustainability management Water management Waterways |
| title | Small artificial impoundments have big implications for hydrology and freshwater biodiversity |
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