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Variation in hydrochory among lakes and streams: Effects of channel planform, roughness, and currents
Southwest University, Chongqing, China.
Umå universitet.
Umeå universitet.
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för miljö- och livsvetenskaper (from 2013).
2019 (Engelska)Ingår i: Ecohydrology, ISSN 1936-0584, E-ISSN 1936-0592, artikel-id e2091Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The configuration of channels in stream networks is vital for their connectivity, biodiversity, and metacommunity dynamics. We compared the capacity of three process domains—lakes, slow-flowing reaches, and rapids—to disperse and retain plant propagules by releasing small wooden cubes as propagule mimics during the spring flood and recording their final locations. We also measured the geomorphic characteristics (planform, longitudinal profile, cross-sectional morphology, and wood) of each process domain. The three process domains all differed in morphology and hydraulics, and those characteristics were important in shaping the transport capacity of mimics. On average, lakes retained more mimics than slow-flowing reaches but did not differ from the retainment of rapids. Living macrophytes were the most efficient element trapping mimics. In rapids and slow-flowing reaches, most trapped mimics remained floating, whereas in lakes, most mimics ended up on the banks. The decay curves of retention varied substantially among and within process domains. The results suggest that managers who rely on natural recovery of restored sites by means of plant immigration may benefit from understanding landscape patterns when deciding upon the location of restoration measures in stream networks.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, 2019. artikel-id e2091
Nyckelord [en]
connectivity, hydrochory, lakes, northern Sweden, process domains, propagule mimics, streams, Biodiversity, Morphology, Restoration, Plants (botany)
Nationell ämneskategori
Oceanografi, hydrologi och vattenresurser Miljövetenskap
Forskningsämne
Biologi
Identifikatorer
URN: urn:nbn:se:kau:diva-72499DOI: 10.1002/eco.2091Scopus ID: 2-s2.0-85065187788OAI: oai:DiVA.org:kau-72499DiVA, id: diva2:1324187
Tillgänglig från: 2019-06-13 Skapad: 2019-06-13 Senast uppdaterad: 2020-05-26Bibliografiskt granskad

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Ecohydrology
Oceanografi, hydrologi och vattenresurserMiljövetenskap

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