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Multidecadal signals within co-occurring intertidal barnacles Semibalanus balanoides and Chthamalus spp. linked to the Atlantic Multidecadal Oscillation

Multidecadal signals within co-occurring intertidal barnacles Semibalanus balanoides and Chthamalus spp. linked to the Atlantic Multidecadal Oscillation
Multidecadal signals within co-occurring intertidal barnacles Semibalanus balanoides and Chthamalus spp. linked to the Atlantic Multidecadal Oscillation
Few links have been established between the Atlantic Multidecadal Oscillation and long-term dynamics of marine systems due to the scarcity of sustained biological time-series with sufficient multi-decadal coverage. The abundances of co-occurring boreal and Lusitanian species of barnacle have been recorded annually at a rocky shore in Devon, southwest England since 1953. Multidecadal cycles in relative abundances of the cold-water Semibalanus balanoides and warm-water Chthamalus spp. are strongly correlated with both local sea surface temperatures, and a ‘Warm Index’ of barnacle abundance shows strong links to the basin-scale Atlantic Multidecadal Oscillation. In contrast there are weak or no observed relationships with the North Atlantic Oscillation for either species. The shorter lifecycle of S. balanoides compared to the chthamalids and the increase in spring and summer temperatures to which newly settled S. balanoides recruits have been exposed during the last decade are likely mechanisms by which barnacle densities are responding to low-frequency temperature variability expressed in the Atlantic Multidecadal Oscillation.
0924-7963
70-76
Mieszkowska, N.
4c91117c-a01f-46a6-81c7-68ef16cbd598
Burrows, M.T.
89ce4c9d-01e6-4ae8-a4a2-5a0d8bb09ec2
Pannacciulli, F.G.
0af40454-ffbf-41b7-9396-e7c6f21b7e4b
Hawkins, S.J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Mieszkowska, N.
4c91117c-a01f-46a6-81c7-68ef16cbd598
Burrows, M.T.
89ce4c9d-01e6-4ae8-a4a2-5a0d8bb09ec2
Pannacciulli, F.G.
0af40454-ffbf-41b7-9396-e7c6f21b7e4b
Hawkins, S.J.
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa

Mieszkowska, N., Burrows, M.T., Pannacciulli, F.G. and Hawkins, S.J. (2014) Multidecadal signals within co-occurring intertidal barnacles Semibalanus balanoides and Chthamalus spp. linked to the Atlantic Multidecadal Oscillation. Journal of Marine Systems, 133, 70-76. (doi:10.1016/j.jmarsys.2012.11.008).

Record type: Article

Abstract

Few links have been established between the Atlantic Multidecadal Oscillation and long-term dynamics of marine systems due to the scarcity of sustained biological time-series with sufficient multi-decadal coverage. The abundances of co-occurring boreal and Lusitanian species of barnacle have been recorded annually at a rocky shore in Devon, southwest England since 1953. Multidecadal cycles in relative abundances of the cold-water Semibalanus balanoides and warm-water Chthamalus spp. are strongly correlated with both local sea surface temperatures, and a ‘Warm Index’ of barnacle abundance shows strong links to the basin-scale Atlantic Multidecadal Oscillation. In contrast there are weak or no observed relationships with the North Atlantic Oscillation for either species. The shorter lifecycle of S. balanoides compared to the chthamalids and the increase in spring and summer temperatures to which newly settled S. balanoides recruits have been exposed during the last decade are likely mechanisms by which barnacle densities are responding to low-frequency temperature variability expressed in the Atlantic Multidecadal Oscillation.

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Published date: May 2014
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 363786
URI: http://eprints.soton.ac.uk/id/eprint/363786
ISSN: 0924-7963
PURE UUID: 98478918-a892-4750-9c06-4971d649b73f

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Date deposited: 03 Apr 2014 10:33
Last modified: 16 Jul 2019 21:08

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