Lookup NU author(s): Stephanie Dickens,
Dr Jacqueline Pocklington,
Dr Heather Sugden,
Dr Jane Delany
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Aim: Understanding patterns in the abundance of species across thermal ranges can give useful insights into the potential impacts of climate change. The abundant-centre hypothesis suggests that species will reach peak abundance at the centre of their thermal range where conditions are optimal, but evidence in support of this hypothesis is mixed and limited in geographical and taxonomic scope. We tested the applicability of the abundant-centre hypothesis across a range of intertidal organisms using a large, citizen science-generated data set. Location: UK. Methods: Species' abundance records were matched with their location within their thermal range. Patterns in abundance distribution for individual species, and across aggregated species abundances, were analysed using Kruskal–Wallis tests and quantile general additive models. Results: Individually, invertebrate species showed increasing abundances in the cooler half of the thermal range and decreasing abundances in the warmer half of the thermal range. The overall shape for aggregated invertebrate species abundances reflected a broad peak, with a cool-skewed maximum abundance. Algal species showed little evidence for an abundant-centre distribution individually, but overall the aggregated species abundances suggested a hump-backed abundance distribution.
Author(s): Vye SR, Dickens S, Adams L, Bohn K, Chenery J, Dobson N, Dunn RE, Earp HS, Evans M, Foster C, Grist H, Holt B, Hull S, Jenkins S, Lamont P, Long S, Mieszkowska N, Millard J, Morrall Z, Pack K, Parry-Wilson H, Pocklington J, Pottas J, Richardson L, Scott A, Sugden H, Watson G, West V, Winton D, Delany J, Burrows MT
Publication type: Article
Publication status: Published
Journal: Diversity and Distributions
Issue: ePub ahead of Print
Online publication date: 24/06/2020
Acceptance date: 29/05/2020
Date deposited: 22/07/2020
ISSN (print): 1366-9516
ISSN (electronic): 1472-4642
Publisher: Wiley-Blackwell Publishing, Inc.
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