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Contrasting Respons...
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Hasselquist, Eliza MaherSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden,Institutionen för skogens ekologi och skötsel,Umeå University
(författare)
Contrasting Responses among Aquatic Organism Groups to Changes in Geomorphic Complexity Along a Gradient of Stream Habitat Restoration : Implications for Restoration Planning and Assessment
- Artikel/kapitelEngelska2018
Förlag, utgivningsår, omfång ...
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2018-10-17
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MDPI,2018
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electronicrdacarrier
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LIBRIS-ID:oai:DiVA.org:umu-154362
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-154362URI
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https://doi.org/10.3390/w10101465DOI
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https://res.slu.se/id/publ/97521URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Many stream restoration projects aim to increase geomorphic complexity, assuming that this increases habitat heterogeneity and, thus, biodiversity. However, empirical data supporting these linkages remain scant. Previous assessments of stream restoration suffer from incomplete quantification of habitat complexity, or a narrow focus on only one organism group and/or one restoration measure, limiting learning. Based on a comprehensive quantification of geomorphic complexity in 20 stream reaches in northern Sweden, ranging from streams channelized for timber floating to restored and reference reaches, we investigated responses of macroinvertebrates, diatoms, and macrophytes to multiple geomorphic metrics. Sediment size heterogeneity, which was generally improved in restored sites, favored macroinvertebrate and diatom diversity and macroinvertebrate abundance. In contrast, macrophyte diversity responded to increased variation along the longitudinal stream profile (e.g., step-pools), which was not consistently improved by the restoration. Our analyses highlight the value of learning across multiple restoration projects, both in identifying which aspects of restoration have succeeded, and pinpointing other measures that might be targeted during adaptive management or future restoration. Given our results, a combination of restoration measures targeting not only sediment size heterogeneity, but also features such as step-pools and instream wood, is most likely to benefit benthic biota in streams.
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Polvi, Lina EUmeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum(Swepub:umu)lipo0009
(författare)
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Kahlert, MariaSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment(Swepub:slu)47692
(författare)
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Nilsson, ChristerUmeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum(Swepub:umu)chni0001
(författare)
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Sandberg, LisaUmeå universitet,Institutionen för ekologi, miljö och geovetenskap
(författare)
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Mckie, BrendanSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment(Swepub:slu)47716
(författare)
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Umeå universitetInstitutionen för ekologi, miljö och geovetenskap
(creator_code:org_t)
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Sveriges lantbruksuniversitet
Sammanhörande titlar
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Ingår i:Water: MDPI10:102073-4441
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