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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2000
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| Accesso online: | https://doi.org/10.1594/PANGAEA.855309 |
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| _version_ | 1867170987990056960 |
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| author | Toyofuku, Takashi Kitazato, Hiroshi Kawahata, Hodaka Tsuchiya, Masashi Nohara, Masato |
| author_facet | Toyofuku, Takashi Kitazato, Hiroshi Kawahata, Hodaka Tsuchiya, Masashi Nohara, Masato |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We studied Mg/Ca in high-Mg, shallow-water benthic foraminifera in culture and in samples from natural environments, in order to evaluate the expression of latitudinal and seasonal temperature variability in Mg/Ca in their tests. We cultured Planoglabratella opercularis (d'Orbigny) and Quinqueloculina yabei Asano under controlled temperature (10°-25°C) and salinity (30-38) conditions. Both species show a linear correlation between Mg/Ca and temperature, but they differ in temperature sensitivity. Salinity does not significantly influence Mg/Ca. In the samples collected in nature, Mg/Ca and seawater temperatures are positively correlated, but there are more complexities than in the records for cultured specimens due to such factors as seasonal fluctuations in temperature. We conclude that Mg/Ca ratios in monospecific benthic foraminiferal samples may be used as a reliable temperature proxy, if the lifetime of the species is taken into account. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_855309 |
| institution | PANGAEA |
| language | en |
| publishDate | 2000 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Temperature and foraminiferal Mg/Ca ratios of samples off Japan Toyofuku, Takashi Kitazato, Hiroshi Kawahata, Hodaka Tsuchiya, Masashi Nohara, Masato Average; Calculated from Mg/Ca ratios; DATE/TIME; DEPTH, sediment/rock; Echizen-Matsushima; Event label; Habitat; HAND; Kushikino; Latitude of event; Longitude of event; Magnesium/Calcium ratio; off Japan; Omaezaki; Rumoi; Sampling by hand; Taisha; Temperature, calculated; Temperature, water; Tsuruka We studied Mg/Ca in high-Mg, shallow-water benthic foraminifera in culture and in samples from natural environments, in order to evaluate the expression of latitudinal and seasonal temperature variability in Mg/Ca in their tests. We cultured Planoglabratella opercularis (d'Orbigny) and Quinqueloculina yabei Asano under controlled temperature (10°-25°C) and salinity (30-38) conditions. Both species show a linear correlation between Mg/Ca and temperature, but they differ in temperature sensitivity. Salinity does not significantly influence Mg/Ca. In the samples collected in nature, Mg/Ca and seawater temperatures are positively correlated, but there are more complexities than in the records for cultured specimens due to such factors as seasonal fluctuations in temperature. We conclude that Mg/Ca ratios in monospecific benthic foraminiferal samples may be used as a reliable temperature proxy, if the lifetime of the species is taken into account. |
| title | (Table 1) Temperature and foraminiferal Mg/Ca ratios of samples off Japan |
| topic | Average; Calculated from Mg/Ca ratios; DATE/TIME; DEPTH, sediment/rock; Echizen-Matsushima; Event label; Habitat; HAND; Kushikino; Latitude of event; Longitude of event; Magnesium/Calcium ratio; off Japan; Omaezaki; Rumoi; Sampling by hand; Taisha; Temperature, calculated; Temperature, water; Tsuruka |
| url | https://doi.org/10.1594/PANGAEA.855309 |