Shell chemistry of the boreal Campanian bivalve Rastellum diluvianum (Linnaeus, 1767) reveals temperature seasonality, growth rates and life cycle of an extinct Cretaceous oyster
| Autor: | N. J. de Winter, C. V. Ullmann, A. M. Sørensen, N. Thibault, S. Goderis, S. J. M. Van Malderen, C. Snoeck, S. Goolaerts, F. Vanhaecke, P. Claeys |
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| Přispěvatelé: | Chemistry, Analytical, Environmental & Geo-Chemistry, History, Archeology, Arts, Philosophy and Ethics, Multidisciplinary Archaeological Research Institute, Earth System Sciences, non-UU output of UU-AW members, Earth Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
life history
010506 paleontology CHEMICAL DIAGENESIS ARCTICA-ISLANDICA lcsh:Life 010502 geochemistry & geophysics 01 natural sciences OXYGEN bivalve Cretaceous Isotopes of oxygen lcsh:QH540-549.5 medicine Rastellum diluvianum 14. Life underwater ISOTOPIC COMPOSITION Arctica islandica Ecology Evolution Behavior and Systematics LOW-MG CALCITE CRASSOSTREA-GIGAS 0105 earth and related environmental sciences Earth-Surface Processes oyster Vienna Standard Mean Ocean Water biology seasonality Stable isotope ratio BIOLOGICAL CARBONATES lcsh:QE1-996.5 DIAGENETIC STABILIZATION Trace element Biology and Life Sciences PLACOPECTEN-MAGELLANICUS SCALLOP Seasonality biology.organism_classification medicine.disease MULTICOMPONENT CARBONATE SYSTEM lcsh:Geology Sea surface temperature lcsh:QH501-531 Oceanography 13. Climate action Earth and Environmental Sciences SEA-SURFACE TEMPERATURE growth rate lcsh:Ecology |
| Zdroj: | Biogeosciences, Vol 17, Pp 2897-2922 (2020) Biogeosciences, 17(11), 2897. European Geosciences Union Biogeosciences, 17(11), 2897-2922. European Geosciences Union de Winter, N J, Ullmann, C V, Sorensen, A M, Thibault, N, Goderis, S, Van Malderen, S J M, Snoeck, C, Goolaerts, S, Vanhaecke, F & Claeys, P 2020, ' Shell chemistry of the boreal Campanian bivalve Rastellum diluvianum (Linnaeus, 1767) reveals temperature seasonality, growth rates and life cycle of an extinct Cretaceous oyster ', Biogeosciences, vol. 17, no. 11, pp. 2897-2922 . https://doi.org/10.5194/bg-17-2897-2020 BIOGEOSCIENCES |
| ISSN: | 1726-4189 1726-4170 |
| Popis: | The Campanian age (Late Cretaceous) is characterized by a warm greenhouse climate with limited land-ice volume. This makes this period an ideal target for studying climate dynamics during greenhouse periods, which are essential for predictions of future climate change due to anthropogenic greenhouse gas emissions. Well-preserved fossil shells from the Campanian (±78 Ma) high mid-latitude (50ĝˆ N) coastal faunas of the Kristianstad Basin (southern Sweden) offer a unique snapshot of short-term climate and environmental variability, which complements existing long-term climate reconstructions. In this study, we apply a combination of high-resolution spatially resolved trace element analyses (micro-X-ray fluorescence - μXRF - and laser ablation inductively coupled plasma mass spectrometry - LA-ICP-MS), stable isotope analyses (IRMS) and growth modeling to study short-term (seasonal) variations recorded in the oyster species Rastellum diluvianum from the Ivö Klack locality. Geochemical records through 12 specimens shed light on the influence of specimen-specific and ontogenetic effects on the expression of seasonal variations in shell chemistry and allow disentangling vital effects from environmental influences in an effort to refine paleoseasonality reconstructions of Late Cretaceous greenhouse climates. Growth models based on stable oxygen isotope records yield information on the mode of life, circadian rhythm and reproductive cycle of these extinct oysters. This multi-proxy study reveals that mean annual temperatures in the Campanian higher mid-latitudes were 17 to 19 ĝˆ C, with winter minima of ĝˆ1/413 ĝˆ C and summer maxima of 26 ĝˆ C, assuming a Late Cretaceous seawater oxygen isotope composition of -1 ‰ VSMOW (Vienna standard mean ocean water). These results yield smaller latitudinal differences in temperature seasonality in the Campanian compared to today. Latitudinal temperature gradients were similar to the present, contrasting with previous notions of "equable climate" during the Late Cretaceous. Our results also demonstrate that species-specific differences and uncertainties in the composition of Late Cretaceous seawater prevent trace element proxies (Mgĝˆ•Ca, Srĝˆ•Ca, Mgĝˆ•Li and Srĝˆ•Li) from being used as reliable temperature proxies for fossil oyster shells. However, trace element profiles can serve as a quick tool for diagenesis screening and investigating seasonal growth patterns in ancient shells. |
| Databáze: | OpenAIRE |
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