Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/26774
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: The influence of hydrological and land use indicators on macrophyte richness in lakes – A comparison of catchment and landscape buffers across multiple scales
Author(s): Sun, Junyao
Hunter, Peter
Tyler, Andrew
Willby, Nigel
Contact Email: n.j.willby@stir.ac.uk
Keywords: Catchment
Buffer analyses
Lake macrophyte
Landscape pattern
Species richness
Issue Date: Jun-2018
Citation: Sun J, Hunter P, Tyler A & Willby N (2018) The influence of hydrological and land use indicators on macrophyte richness in lakes – A comparison of catchment and landscape buffers across multiple scales, Ecological Indicators, 89, pp. 227-239.
Abstract: In biogeography it is well established that environmental variables often have scale-dependent effects on abundance and distribution of organisms. Here we present results from a study on scale-dependency of macrophyte (aquatic plant) richness to hydrology and land use indicators. Hydrological connectivity and land use within the landscape surrounding 90 \{UK\} lakes, at nine buffer sizes varying from 0.25 km to 10 km from the shoreline, with (catchment buffer) and without (landscape buffer) adherence to the catchment boundary, were constructed using GIS. These variables were used to explain variation in macrophyte richness derived from field surveys. The results revealed strong scale-dependency. The effects of land use were most apparent at small buffer sizes and grossly outweighed the importance of hydrology at all spatial scales. The total richness of macrophytes was most strongly determined by land use and hydrology within 1 km of the lake for landscape buffers and 500 m for catchment buffers. The nature of the scale-dependent effect also varied with macrophyte growth habit. In terms of growth form composition, the effects of hydrological connectivity were stronger than those of land use, being greatest at an intermediate distance (∼5 km) from the lake. Our results indicate the value of maintaining some lake catchments with less intensive land use, at least within 1 km of the lake shore, while also minimising alterations to catchment hydrology (e.g. through drainage or impoundment) over distances extending at least 5 km from the lake shore.
DOI Link: http://dx.doi.org/10.1016/j.ecolind.2018.02.016
Rights: This 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. Accepted refereed manuscript of: Sun J, Hunter P, Tyler A & Willby N (2018) The influence of hydrological and land use indicators on macrophyte richness in lakes – A comparison of catchment and landscape buffers across multiple scales, Ecological Indicators, 89, pp. 227-239. DOI: 10.1016/j.ecolind.2018.02.016 © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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