Response of intertidal barnacles to air temperature: Long-term monitoring and in-situ measurements

Colin LITTLE, Cynthia D. TROWBRIDGE*, Gray A. WILLIAMS, T. Y. HUI, Graham M. PILLING, David MORRITT, Penny STIRLING

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

1 Citation (Scopus)

Abstract

A twenty-five year (1994–2018) survey at 10 rocky sites within Lough Hyne Marine Reserve (SW Ireland) showed that, despite considerable spatial and temporal patchiness, three barnacle species (Chthamalus stellatus, Semibalanus balanoides, and Austrominius modestus) declined in overall abundance in the early 2000s, particularly at three sites. There was no clear response of A. modestus or C. stellatus to the cold winters of 2010 and 2011. In 2004, however, S. balanoides declined suddenly, but showed a slight recovery after the cold winter of 2010 to maintain sparse populations in the lough, but remained abundant outside the lough. A fourth species, Chthamalus montagui, showed a different pattern, with wide fluctuations in abundance but no overall decline. Changes in the Atlantic Multidecadal Oscillation may have influenced the overall composition of barnacle populations. Rising maximum air temperatures, resulting in high body temperatures recorded for A. modestus even during mild days, are suggested to have impacted the barnacle populations as a result of the prolonged aerial exposure times caused by the lough's asymmetric tidal pattern.

Original languageEnglish
Article number107367
Number of pages13
JournalEstuarine, Coastal and Shelf Science
Volume256
Early online date15 Apr 2021
DOIs
Publication statusPublished - 5 Aug 2021
Externally publishedYes

Bibliographical note

We are grateful to Declan O'Donnell and Patrick Graham of the National Parks and Wildlife Service for permission to carry out research at the lough. In the initial years of the surveys, we were helped greatly by the then Warden of the lough, John Bohane. Over the 25-year period we have been assisted by a great number of people. In particular we would like to thank the long-term monitoring team of A. Miles, L. Teagle, B. Dlouhy-Massengale, and C.Q. Plowman. We were also greatly helped by M. Consalvey, T. Horton, T. Crowe, A. Laferriere, S. Schroeder, K. Bennett, M. Wolf, L. Garlie, J. Lord, M. Pauling, and IRES (International Research Experiences for Students) fellows, and we thank them all. Comments by J. Davenport, C.Q. Plowman and two anonymous reviewers significantly improved an earlier draft of this paper. This material is based upon work supported in part by the National Parks and Wildlife Service of Ireland and the U.S. National Science Foundation under Grant No. 0211186 and 1130978 -OISE. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Funding Information:
We are grateful to Declan O'Donnell and Patrick Graham of the National Parks and Wildlife Service for permission to carry out research at the lough. In the initial years of the surveys, we were helped greatly by the then Warden of the lough, John Bohane. Over the 25-year period we have been assisted by a great number of people. In particular we would like to thank the long-term monitoring team of A. Miles, L. Teagle, B. Dlouhy-Massengale, and C.Q. Plowman. We were also greatly helped by M. Consalvey, T. Horton, T. Crowe, A. Laferriere, S. Schroeder, K. Bennett, M. Wolf, L. Garlie, J. Lord, M. Pauling, and IRES (International Research Experiences for Students) fellows, and we thank them all. Comments by J. Davenport, C.Q. Plowman and two anonymous reviewers significantly improved an earlier draft of this paper. This material is based upon work supported in part by the National Parks and Wildlife Service of Ireland and the U.S. National Science Foundation under Grant No. 0211186 and 1130978-OISE. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Keywords

  • Air temperature
  • Barnacles
  • Ireland
  • Marine reserve
  • Non-climatic warming

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