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Performance of a warm-water limpet species towards its poleward range edge compared to a colder-water congener

Performance of a warm-water limpet species towards its poleward range edge compared to a colder-water congener
Performance of a warm-water limpet species towards its poleward range edge compared to a colder-water congener
The demography and individual performance of species at their range edges provide important insight into how climate warming is impacting species distributions. The boreal limpet Patella vulgata and the Lusitanian limpet P. depressa have overlapping geographic ranges and local distributions in Britain. We measured individual performance at the 2 leading edges of P. depressa distribution (North Wales and South/South-east England) and in non-range edge populations in South-west England. Individuals of P. depressa towards both leading edges were expected to have reduced growth rates and higher mortality rates when compared with non-range edge populations. Conversely, P. vulgata was expected to have equivalent performance across regions, coinciding with the centre of its range. Tagged individuals did not show between-species differences in growth and mortality over a 12 mo period. Nonetheless, individual growth rates and population mortality rates of both Patella species were higher towards the range edge of P. depressa in South/South-east England, when compared with populations at its poleward edge and those in South-west England. Further analysis showed that growth and mortality rates were higher in denser populations for both P. depressa and P. vulgata, with equivalent site-specific performance patterns for both species in all regions. Thus, performance patterns of P. depressa reflected local factors in the same way as P. vulgata, overriding patterns of declining performance expected towards species borders. Comparisons between key congeneric species and their unexpected patterns of performance across their ranges provide insights into processes setting species boundaries and thereby their responses to climate change.
Climate change, Intertidal ecology, Leading edge, Patella spp, Range edges
0171-8630
207-225
Oróstica, M.H.
eb5d2fc6-19e1-4dd4-b1c5-376f9dc61b81
Hawkins, S.J.
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Broitman, B.R.
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Jenkins, S.R.
f160f172-4162-4e5b-bf70-9048d9e7ec8d
Oróstica, M.H.
eb5d2fc6-19e1-4dd4-b1c5-376f9dc61b81
Hawkins, S.J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Broitman, B.R.
0abbe7e3-28db-4a7e-bb09-a40d74c4c9af
Jenkins, S.R.
f160f172-4162-4e5b-bf70-9048d9e7ec8d

Oróstica, M.H., Hawkins, S.J., Broitman, B.R. and Jenkins, S.R. (2020) Performance of a warm-water limpet species towards its poleward range edge compared to a colder-water congener. Marine Ecology Progress Series, 656, 207-225. (doi:10.3354/meps13461).

Record type: Article

Abstract

The demography and individual performance of species at their range edges provide important insight into how climate warming is impacting species distributions. The boreal limpet Patella vulgata and the Lusitanian limpet P. depressa have overlapping geographic ranges and local distributions in Britain. We measured individual performance at the 2 leading edges of P. depressa distribution (North Wales and South/South-east England) and in non-range edge populations in South-west England. Individuals of P. depressa towards both leading edges were expected to have reduced growth rates and higher mortality rates when compared with non-range edge populations. Conversely, P. vulgata was expected to have equivalent performance across regions, coinciding with the centre of its range. Tagged individuals did not show between-species differences in growth and mortality over a 12 mo period. Nonetheless, individual growth rates and population mortality rates of both Patella species were higher towards the range edge of P. depressa in South/South-east England, when compared with populations at its poleward edge and those in South-west England. Further analysis showed that growth and mortality rates were higher in denser populations for both P. depressa and P. vulgata, with equivalent site-specific performance patterns for both species in all regions. Thus, performance patterns of P. depressa reflected local factors in the same way as P. vulgata, overriding patterns of declining performance expected towards species borders. Comparisons between key congeneric species and their unexpected patterns of performance across their ranges provide insights into processes setting species boundaries and thereby their responses to climate change.

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More information

Accepted/In Press date: 5 August 2020
e-pub ahead of print date: 22 October 2020
Published date: 10 December 2020
Keywords: Climate change, Intertidal ecology, Leading edge, Patella spp, Range edges

Identifiers

Local EPrints ID: 449717
URI: http://eprints.soton.ac.uk/id/eprint/449717
ISSN: 0171-8630
PURE UUID: 1bca76db-3dc6-4672-a721-9b7ea18d6aca

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Date deposited: 11 Jun 2021 16:33
Last modified: 27 Apr 2022 11:38

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Contributors

Author: M.H. Oróstica
Author: S.J. Hawkins
Author: B.R. Broitman
Author: S.R. Jenkins

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