Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea)
High-resolution proxy records are needed to evaluate models simulating past, present and future climatic conditions. Before such records can be reliably employed, calibration studies have to be conducted to assess the confidence intervals of the proxies. Here, we use shells of the fast growing Pacif...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:57658 2023-05-15T17:54:22+02:00 Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) Petersen, Jassin Titschack, Juergen Groeneveld, Jeroen Wehrmann, Achim Hebbeln, Dierk Freiwald, Andre 2021 https://kups.ub.uni-koeln.de/57658/ eng eng ELSEVIER Petersen, Jassin, Titschack, Juergen, Groeneveld, Jeroen, Wehrmann, Achim, Hebbeln, Dierk and Freiwald, Andre (2021). Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea). Paleogeogr. Paleoclimatol. Paleoecol., 577. AMSTERDAM: ELSEVIER. ISSN 1872-616X ddc:no doc-type:article publishedVersion 2021 ftubkoeln 2022-11-09T07:33:34Z High-resolution proxy records are needed to evaluate models simulating past, present and future climatic conditions. Before such records can be reliably employed, calibration studies have to be conducted to assess the confidence intervals of the proxies. Here, we use shells of the fast growing Pacific oyster Magallana gigas from the Central Wadden Sea, North Sea, a temperate barrier island-backbarrier tidal flat-salt marsh system with large seasonal changes of water mass-properties, for the calibration of geochemical proxies. M. gigas represents a non-native invasive species that rapidly develops oyster reefs. Calcite shells of two specimens from the intertidal and subtidal zones were sampled in high resolution yielding sub-monthly data sets. The time period represented in the shell, based on delta O-18 age modeling, was estimated at 8-10 years and the growth of the shells was restricted from (late) spring to (early) autumn of each year. Mg/Ca, Mn/Ca and Sr/Ca ratios of the intertidal and subtidal specimens show similar seasonal patterns. Mg/Ca and Sr/Ca ratios are investigated as high-resolution sea surface temperature (SST) proxies. Important ontogenetic effects (i.e., increasing time-averaging with increasing age) as well as inter-specimen variability are discussed as limiting factors for the proxy development. Intertidal Mg/Ca ratios show only a significant correlation to the high-resolution SST record of the Central Wadden Sea when the early ontogenetic stage is considered. Sr/Ca ratios were comparable in terms of absolute values and amplitudes to those of M. gigas in the Northern Wadden Sea, but amplitudes were decreasing with increasing age. These findings seriously hamper the application of Mg/Ca and Sr/Ca for reliable palaeotemperature reconstructions regardless of ontogenetic stage. The Mn/Ca ratios were investigated as proxy for Mn cycling in tidal basins, where it is interrelated with seasonal changes in primary production. In addition to the generally observed seasonal variability of the Mn/Ca ... Article in Journal/Newspaper Pacific oyster Cologne University: KUPS Barrier Island ENVELOPE(78.396,78.396,-68.431,-68.431) Pacific |
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collection |
Cologne University: KUPS |
op_collection_id |
ftubkoeln |
language |
English |
topic |
ddc:no |
spellingShingle |
ddc:no Petersen, Jassin Titschack, Juergen Groeneveld, Jeroen Wehrmann, Achim Hebbeln, Dierk Freiwald, Andre Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) |
topic_facet |
ddc:no |
description |
High-resolution proxy records are needed to evaluate models simulating past, present and future climatic conditions. Before such records can be reliably employed, calibration studies have to be conducted to assess the confidence intervals of the proxies. Here, we use shells of the fast growing Pacific oyster Magallana gigas from the Central Wadden Sea, North Sea, a temperate barrier island-backbarrier tidal flat-salt marsh system with large seasonal changes of water mass-properties, for the calibration of geochemical proxies. M. gigas represents a non-native invasive species that rapidly develops oyster reefs. Calcite shells of two specimens from the intertidal and subtidal zones were sampled in high resolution yielding sub-monthly data sets. The time period represented in the shell, based on delta O-18 age modeling, was estimated at 8-10 years and the growth of the shells was restricted from (late) spring to (early) autumn of each year. Mg/Ca, Mn/Ca and Sr/Ca ratios of the intertidal and subtidal specimens show similar seasonal patterns. Mg/Ca and Sr/Ca ratios are investigated as high-resolution sea surface temperature (SST) proxies. Important ontogenetic effects (i.e., increasing time-averaging with increasing age) as well as inter-specimen variability are discussed as limiting factors for the proxy development. Intertidal Mg/Ca ratios show only a significant correlation to the high-resolution SST record of the Central Wadden Sea when the early ontogenetic stage is considered. Sr/Ca ratios were comparable in terms of absolute values and amplitudes to those of M. gigas in the Northern Wadden Sea, but amplitudes were decreasing with increasing age. These findings seriously hamper the application of Mg/Ca and Sr/Ca for reliable palaeotemperature reconstructions regardless of ontogenetic stage. The Mn/Ca ratios were investigated as proxy for Mn cycling in tidal basins, where it is interrelated with seasonal changes in primary production. In addition to the generally observed seasonal variability of the Mn/Ca ... |
format |
Article in Journal/Newspaper |
author |
Petersen, Jassin Titschack, Juergen Groeneveld, Jeroen Wehrmann, Achim Hebbeln, Dierk Freiwald, Andre |
author_facet |
Petersen, Jassin Titschack, Juergen Groeneveld, Jeroen Wehrmann, Achim Hebbeln, Dierk Freiwald, Andre |
author_sort |
Petersen, Jassin |
title |
Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) |
title_short |
Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) |
title_full |
Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) |
title_fullStr |
Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) |
title_full_unstemmed |
Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea) |
title_sort |
reef-building pacific oysters record seasonal variations in water mass-properties of tidal basins from the central wadden sea (north sea) |
publisher |
ELSEVIER |
publishDate |
2021 |
url |
https://kups.ub.uni-koeln.de/57658/ |
long_lat |
ENVELOPE(78.396,78.396,-68.431,-68.431) |
geographic |
Barrier Island Pacific |
geographic_facet |
Barrier Island Pacific |
genre |
Pacific oyster |
genre_facet |
Pacific oyster |
op_relation |
Petersen, Jassin, Titschack, Juergen, Groeneveld, Jeroen, Wehrmann, Achim, Hebbeln, Dierk and Freiwald, Andre (2021). Reef-building Pacific oysters record seasonal variations in water mass-properties of tidal basins from the Central Wadden Sea (North Sea). Paleogeogr. Paleoclimatol. Paleoecol., 577. AMSTERDAM: ELSEVIER. ISSN 1872-616X |
_version_ |
1766162120027668480 |