Analysis of functional traits in reconfigured channels: implications for the bioassessment and disturbance of river restoration
| Autor: | Desiree Tullos, David L. Penrose, W. Gregory Cope, Gregory D. Jennings |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Journal of the North American Benthological Society. 28:80-92 |
| ISSN: | 1937-237X 0887-3593 |
| Popis: | Channel reconfiguration is a popular but controversial approach to river restoration, and ecological responses to channel reconfiguration have not been rigorously assessed. We compared physical-habitat variables, taxonomic and functional-trait diversities, taxonomic composition, and functional-trait abundances between 24 pairs of upstream (control) and downstream reconfigured (restored) reaches in 3 catchment land uses (urban, agricultural, rural) across the North Carolina Piedmont. We asked how environmental filters and functional species traits might provide insight to biological responses to restoration. Taxonomic and functional-trait differences between control and restored reaches suggest that restoration affected aquatic assemblages only in agricultural and rural catchments. Our results highlight 2 important aspects of channel reconfiguration as a restoration practice. First, responses to restoration differ between agricultural/rural and urban catchments, possibly because of modified hydrolo... |
| Databáze: | OpenAIRE |
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