Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSun, Junyaoen_UK
dc.contributor.authorHunter, Peter Den_UK
dc.contributor.authorTyler, Andrew Nen_UK
dc.contributor.authorWillby, Nigel Jen_UK
dc.description.abstractAim The factors controlling macrophyte (aquatic plant) composition are complex, recent research having shown that the well-studied effects of lake environmental factors (the so-called “environmental filter”) can be constrained by hydrological and landscape factors. We investigated the factors determining macrophyte composition in lakes over water body and catchment- scales and the transferability of this pattern across lake types. Location Almost 1000 lakes distributed across Britain. Taxon Lake macrophytes Methods Lakes were partitioned into five types based on subdivision of alkalinity and elevation gradients. Data from botanical surveys were used to compare the spatial turnover and nestedness components of beta diversity between lake types. The relative importance of lake environment (based on local physicochemical data), hydrology (e.g. lake and stream density), landscape (e.g. fragmentation indices, land cover) and spatial autocorrelation in explaining variation in macrophyte composition were derived from variance partitioning. Results Species composition showed strong spatial structuring, suggestive of overland dispersal, enhanced by spatially-correlated abiotic factors such as alkalinity and elevation. Catchment-scale factors (e.g. land use, connectivity) promoted the establishment of different communities (more or less diverse, or differing in composition) but were of secondary importance. Turnover in composition between upland lakes was lower than in other lake types, reflecting a more specialist flora and increased potential for propagule exchange due to spatial aggregation and higher hydrological connectivity. Main conclusions Vegetation composition in lakes is more spatially-structured than previously appreciated, consistent with the importance of dispersal limitation, but this does not apply evenly to all lakes, being most acute in lowland high alkalinity lakes. Thus, spatially-structured abiotic factors, such as alkalinity, influence macrophyte composition most (suggestive of niche filtering) in high alkalinity lakes where human impacts tend to be greatest, although nestedness was also lowest in such lakes. By contrast, hydrological connectivity has a proportionally stronger structuring role in upland lakes.en_UK
dc.relationSun J, Hunter PD, Tyler AN & Willby NJ (2019) Lake and catchment-scale determinants of aquatic vegetation across almost 1,000 lakes and the contrasts between lake types. Journal of Biogeography, 46 (5), pp. 1066-1082.
dc.rightsThis item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This is the peer reviewed version of the following article: Sun, J, Hunter, PD, Tyler, AN, Willby, NJ. Lake and catchment‐scale determinants of aquatic vegetation across almost 1,000 lakes and the contrasts between lake types. Journal of Biogeography 2019; 46: 1066– 1082, which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.en_UK
dc.subjectvariation partitioningen_UK
dc.titleLake and catchment-scale determinants of aquatic vegetation across almost 1,000 lakes and the contrasts between lake typesen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[JBiog_variation-partitioning_2019_full.pdf] Publisher requires embargo of 12 months after formal publication.en_UK
dc.citation.jtitleJournal of Biogeographyen_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
Appears in Collections:Biological and Environmental Sciences Journal Articles

Files in This Item:
File Description SizeFormat 
JBiog_variation-partitioning_2019_full.pdfFulltext - Accepted Version3.21 MBAdobe PDFView/Open

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.