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Rehabilitation of an Incised Stream Using Plant Materials: the Dominance of Geomorphic Processes Ecology and Society
Shields, Jr., F. Douglas; USDA ARS National Sedimentation Laboratory; doug.shields@ars.usda.gov; Pezeshki, S. Reza; University of Memphis; pezeshki22@yahoo.com; Wilson, Glen V.; USDA ARS National Sedimentation Laboratory; GVWilson@msa-oxford.ars.usda.gov; Wu, Weiming; University of Mississippi National Center for Computational Hydroscience and Engineering; wuwm@ncche.olemiss.edu; Dabney, Seth M.; USDA ARS National Sedimentation Laboratory; sdabney@msa-oxford.ars.usda.gov.
The restoration of potentially species-rich stream ecosystems in physically unstable environments is challenging, and few attempts have been evaluated scientifically. Restoration approaches that involve living and dead native vegetation are attractive economically and from an ecological standpoint. A 2-km reach of an incised, sand-bed stream in northern Mississippi was treated with large wood structures and willow plantings to trigger responses that would result in increasing similarity with a lightly degraded reference stream. Experimental approaches for stream bank and gully stabilization were also examined. Although the project was initially successful in producing improved aquatic habitat, after 4 yr it had failed to effectively address issues related...
Tipo: Peer-Reviewed Reports Palavras-chave: Biotechnical stabilization; Erosion; Fish community structure; Gullies; Large wood; Physical aquatic habitat; Stream restoration; Willows.
Ano: 2008
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Contrasting patterns in the abundance of fish communities targeted by fishers on two coral reefs in southern Mozambique ArchiMer
Sancelme, Tonin; Goetze, J; Jaquemet, S; Meekan, Mg; Flam, A; Watts, Am; Speed, Cw.
Coastal populations of maritime countries in eastern Africa rely on fish as a primary source of protein, but baseline information on the abundance of fish communities on these coastlines is often lacking. We used baited remote underwater video stations to compare the abundance and diversity of reef fishes targeted by fishing at two sites in southern Mozambique, one at Lighthouse Reef within the Bazaruto Archipelago National Park and the other to the south at San Sebastian Reef on the San Sebastian Peninsula. Fish that are known targets of fisheries (mostly small-scale and artisanal) had an abundance that was almost three-times greater at San Sebastian Reef (80.22 ind. h–1 [SE 18.00]) than at Lighthouse Reef (29.70 ind. h–1 [SE 8.91]). Similarly, there was...
Tipo: Text Palavras-chave: Baited remote underwater video; Bazaruto Archipelago; Biodiversity; Fish community structure; Fishing pressure; Marine reserve; Rarefaction curves; Western Indian Ocean.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00657/76941/79988.pdf
Registros recuperados: 2
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