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. 2019 Jan 2;100(1):e02552. doi: 10.1002/ecy.2552

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© 2019 The Authors. Ecology published by Wiley Periodicals, Inc. on behalf of Ecological Society of America.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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(a) The locations of cases, expressed as latitude and longitude midpoints. Red points represent cases included in both the meta‐analysis and systematic review databases; blue points represent locations of cases only included in the systematic review database. (b) Mixed‐effects meta‐regression of Fisher's z (relationship of NERR and grain) as a function of longitude including linear and quadratic terms with a 95% confidence interval. A frequency rug is shown on the x‐axis. [Color figure can be viewed at http://www.wileyonlinelibrary.com]