Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China
The northwest coast of Bohai Bay supports large areas of Holocene Crassostrea gigas (oyster) reefs. Their huge size and the fact that the shells are composed of consecutive microgrowth layers, consisting of primary calcite, make them an ideal object for a stable isotope study. The delta(18)O and del...
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Language: | English |
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1995
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ftvliz:oai:oma.vliz.be:231821 2023-05-15T15:58:58+02:00 Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China Hong, W. Keppens, E. Nielsen, P. Vanriet, A. 1995 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=231821 en eng info:eu-repo/semantics/altIdentifier/wos/A1995RL47700020 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/0025-3227(95)00046-2 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=231821 info:eu-repo/semantics/restrictedAccess %3Ci%3EMar.+Geol.+124%281-4%29%3C%2Fi%3E%3A+289-302.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2F0025-3227%2895%2900046-2%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2F0025-3227%2895%2900046-2%3C%2Fa%3E Holocene Bivalvia Asia China info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1995 ftvliz https://doi.org/10.1016/0025-3227(95)00046-2 2022-05-01T10:08:23Z The northwest coast of Bohai Bay supports large areas of Holocene Crassostrea gigas (oyster) reefs. Their huge size and the fact that the shells are composed of consecutive microgrowth layers, consisting of primary calcite, make them an ideal object for a stable isotope study. The delta(18)O and delta(13)C compositions of the oysters reveal a number of interesting features. The most important are annual cycles related to seasonal variations, the regional delta(18)O (water) versus salinity ratio, and a stop in shell secretion below a water temperature of 11.5+/-1.5 degrees C. A positive correlation (covariance) between delta(18)O and delta(13)C values is present in most specimens. The delta(18)O and delta(13)C values of single specimens are believed to be mainly controlled by water temperature and the occurrence of phytoplankton blooms and decomposition. However, correlation among oysters of different ages indicate that the delta(18)O and delta(13)C values are mainly dependant of three variables: water temperature, salinity and phytoplankton blooms/decomposition. Between ca. 6500 yrs cal B.P. and 2300 yrs cal B.P. the salinity in Bohai Bay increased from less than 20 parts per thousand to 30 parts per thousand. Based on geological data combined with ecological data from C. gigas, we suggest that precipitation decreased during this period, while the input of fluvial sediments increased. The sediment load of rivers increased markedly after ca. 4000 yrs cal B.P., possibly due to a change in climate. In our study area this resulted in the development of the Oyster Plain. Article in Journal/Newspaper Crassostrea gigas Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Marine Geology 124 1-4 289 302 |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
topic |
Holocene Bivalvia Asia China |
spellingShingle |
Holocene Bivalvia Asia China Hong, W. Keppens, E. Nielsen, P. Vanriet, A. Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China |
topic_facet |
Holocene Bivalvia Asia China |
description |
The northwest coast of Bohai Bay supports large areas of Holocene Crassostrea gigas (oyster) reefs. Their huge size and the fact that the shells are composed of consecutive microgrowth layers, consisting of primary calcite, make them an ideal object for a stable isotope study. The delta(18)O and delta(13)C compositions of the oysters reveal a number of interesting features. The most important are annual cycles related to seasonal variations, the regional delta(18)O (water) versus salinity ratio, and a stop in shell secretion below a water temperature of 11.5+/-1.5 degrees C. A positive correlation (covariance) between delta(18)O and delta(13)C values is present in most specimens. The delta(18)O and delta(13)C values of single specimens are believed to be mainly controlled by water temperature and the occurrence of phytoplankton blooms and decomposition. However, correlation among oysters of different ages indicate that the delta(18)O and delta(13)C values are mainly dependant of three variables: water temperature, salinity and phytoplankton blooms/decomposition. Between ca. 6500 yrs cal B.P. and 2300 yrs cal B.P. the salinity in Bohai Bay increased from less than 20 parts per thousand to 30 parts per thousand. Based on geological data combined with ecological data from C. gigas, we suggest that precipitation decreased during this period, while the input of fluvial sediments increased. The sediment load of rivers increased markedly after ca. 4000 yrs cal B.P., possibly due to a change in climate. In our study area this resulted in the development of the Oyster Plain. |
format |
Article in Journal/Newspaper |
author |
Hong, W. Keppens, E. Nielsen, P. Vanriet, A. |
author_facet |
Hong, W. Keppens, E. Nielsen, P. Vanriet, A. |
author_sort |
Hong, W. |
title |
Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China |
title_short |
Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China |
title_full |
Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China |
title_fullStr |
Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China |
title_full_unstemmed |
Oxygen and carbon isotope study of the Holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of Bohai Bay, China |
title_sort |
oxygen and carbon isotope study of the holocene oyster reefs and paleoenvironmental reconstruction on the northwest coast of bohai bay, china |
publishDate |
1995 |
url |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=231821 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
%3Ci%3EMar.+Geol.+124%281-4%29%3C%2Fi%3E%3A+289-302.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2F0025-3227%2895%2900046-2%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2F0025-3227%2895%2900046-2%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/A1995RL47700020 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/0025-3227(95)00046-2 http://www.vliz.be/nl/open-marien-archief?module=ref&refid=231821 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/0025-3227(95)00046-2 |
container_title |
Marine Geology |
container_volume |
124 |
container_issue |
1-4 |
container_start_page |
289 |
op_container_end_page |
302 |
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1766394757382144000 |