Coralline red algae as high-resolution climate recorders

Journal article


Publication Details

Author(s): Halfar J, Steneck RS, Joachimski M, Kronz A, Wanamaker AD
Journal: Geology
Publisher: Geological Society of America
Publication year: 2008
Volume: 36
Pages range: 463-466
ISSN: 0091-7613


Abstract


Most high-resolution, proxy-based paleoclimate research has concentrated on tropical oceans, while mid-and high-latitude marine regions have received less attention, despite their importance in the global climate system. At present, sclerochronological analyses of bivalve mollusks supply the bulk of annual-to subannual-resolution extratropical marine climate data, even though interpretation is complicated by a slowdown of growth with increasing shell age. Hence, in order to address the need for additional high-resolution proxy climate data from extratropical regions, we conducted the first year-long in situ field calibration of the coralline red alga Clathromorphum compactum in the Gulf of Maine, United States. Coralline red algae are widely distributed in coastal regions worldwide, and individual calcified plants can live continuously for several centuries in temperate and subarctic oceans. Stable oxygen isotopes extracted at subannual resolution from growth increments of monitored specimens of C. compactum relate well to in situ-measured sea-surface temperatures during the May to December calcification period, highlighting the suitability of coralline red algae as an extratropical climate archive. Furthermore, there is a strong correlation between a 30 yr δ18O record of C. compactum and an instrumental sea-surface temperature record (r = -0.58,p = 0.0008) and a proxy reconstruction derived from the bivalve Arctica islandica collected in the central Gulf of Maine (r = 0.54,p = 0.002). © 2008 The Geological Society of America.



FAU Authors / FAU Editors

Joachimski, Michael Prof. Dr.
Lehrstuhl für Geologie (Exogene Dynamik)


External institutions
Georg-August-Universität Göttingen
University of Maine
University of Toronto
University of Wales


How to cite

APA:
Halfar, J., Steneck, R.S., Joachimski, M., Kronz, A., & Wanamaker, A.D. (2008). Coralline red algae as high-resolution climate recorders. Geology, 36, 463-466. https://dx.doi.org/10.1130/G24635A.1

MLA:
Halfar, Jochen, et al. "Coralline red algae as high-resolution climate recorders." Geology 36 (2008): 463-466.

BibTeX: 

Last updated on 2018-09-08 at 14:08