Upwelling history of the Mediterranean Sea revealed by stunted growth in the planktic foraminifera Orbulina universa (early Messinian, Crete, Greece)
Upwelling history of the Mediterranean Sea revealed by stunted growth in the planktic foraminifera Orbulina universa (early Messinian, Crete, Greece)
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浮游有孔虫 Orbulina universa 生长发育迟缓揭示了地中海的上升历史（麦西尼亚早期，希腊克里特岛）
DOI：
10.1007/s00531-014-1076-8
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发表时间：
2014
影响因子：
2.3
通讯作者：
Fassoulas C
中科院分区：
文献类型：
--
作者：
Brachert TC;Bornemann A;Reuter M;Galer SJ;Grimm KI;Fassoulas C
来自地中海地区晚中新世深水沉积物的微体化石和稳定同位素（δ 13 C、δ 18 O）数据显示，在梅西尼亚盐度危机之前，地中海的逐步限制受到轨道岁差的旋回性的调制。关于这些变化对碳酸盐岩台地和斜坡浅水环境的影响知之甚少。这项工作是基于克里特岛（希腊）的地质剖面，揭示了早期的麦西尼亚时代的沉积物，记录了同时代的远洋和浅海系统的海洋变化的反应。我们讨论了一个浮游和底栖有孔虫组合的数据集，结合尺寸测量（n= 6，777）和同位素分析（δ 18 O，δ 13 C）的浮游有孔虫Orbulina uniform关于礁生长模式。浮游有孔虫动物群具有明显的暖性、贫营养性（O. universa）和寒冷的中营养至富营养类群（globigerinids，neogloboquadrinids）。这种旋回性对应于岁差频带上从层状到均质泥灰岩的岩性变化。在中营养有孔虫丰富的层位，O.不均匀是罕见的，测试比平均值小~ 50%。ofO的增长和规模。均匀度受温度、营养源、光照、环境水体O2含量等多种环境因子的影响。用水温来解释大小的变化意味着在一个岁差循环中大约有11 °C的变化。这一估计是在不同意的增长模式和稳定同位素数据流离失所的珊瑚礁（滨珊瑚，Tarbellastraea）记录几乎恒定的海面温度，但大量蒸发。因此，温和的温度变化的背景下，强烈的蒸发（高盐度）和水柱不稳定与向上混合的冷水团具有较高的营养浓度和低O2含量更好地适应大小变化ofO。universa.从存在Halimedabioherms插入与腐泥循环，我们推断循环透光带缺氧和至少有部分路段与腐泥偶已形成在浅海带。我们还建议进一步测试生长发育迟缓的ofO。在未来的古海洋学研究中，将uniform作为增强营养物可用性的代理。
Microfossil and stable isotope data (δ13C, δ18O) from deep-water sediments of Late Miocene age in the Mediterranean region have revealed a stepwise restriction of the Mediterranean prior to the Messinian Salinity Crisis which was modulated by a cyclicity responding to orbital precession. Very little is known with regard to the effects of these changes on shallow water environments of carbonate platforms and ramps. This work is based on a geological section on Crete (Greece) exposing sediments of early Messinian age, which documents the coeval response of pelagic and neritic systems to oceanographic changes. We discuss a dataset of planktic and benthic foraminifera assemblages in conjunction with size measurements (n= 6,777) and isotope analyses (δ18O, δ13C) of the planktic foraminiferaOrbulina universawith regard to reef growth patterns. The planktic foraminifera fauna displays pronounced cyclical abundance changes of warm, oligotrophic (O. universa) and cold, meso- to eu-trophic taxa (globigerinids, neogloboquadrinids). This cyclicity corresponds to lithological changes from laminated to homogeneous marls on the precessional frequency band. In beds rich in mesotrophic foraminifera,O. universais rare and the test is ~50 % smaller than average. Growth and size ofO. universais affected by various environmental factors, including temperature, trophic resources, illumination and O2content of ambient water. Explaining size variability by water temperature implies a change of ~11 °C over one precessional cycle. This estimate is in disagreement with growth patterns and stable isotope data of displaced reef corals (Porites,Tarbellastraea) documenting almost constant sea-surface temperatures, but substantial evaporation. Therefore, moderate temperature changes in a context of intense evaporation (high salinity) and water column destabilization associated with upward mixing of colder water masses with higher nutrient concentrations and low O2content better fits size variation ofO. universa. From the presence ofHalimedabioherms intercalated with the sapropel cycles, we infer cyclic photic zone anoxia and at least some sections with sapropel couplets to have formed in the neritic zone. We also suggest further testing of stunted growth ofO. universaas a proxy for enhanced nutrient availability in future palaeoceanographic studies.
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DOI：
10.1016/s0031-0182(99)00065-6
发表时间：
1999-09-01
影响因子：
3
作者：
Kouwenhoven, TJ;Seidenkrantz, MS;van der Zwaan, GJ
通讯作者：
van der Zwaan, GJ
地中海：现在和过去
影响因子：
5.3
作者：
E. Rohling;R. H. Abu;C. S. L. Casford;A. Hayes;B. Hoogakker
通讯作者：
B. Hoogakker
西地中海与东地中海古海洋学对天文强迫的响应：对墨西拿时期进动控制沉积旋回的高分辨率微型浮游生物研究
DOI：
10.1016/s0031-0182(02)00612-0
发表时间：
2003
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Marta Pérez;F. Sierro;M. Bárcena;J. Flores;A. Vázquez;R. Utrilla;F. Hilgen;W. Krijgsman;G. Filippelli
通讯作者：
G. Filippelli
影响因子：
1.9
作者：
Bornemann, Andre;Norris, Richard D.
通讯作者：
Norris, Richard D.
地中海地区中新世珊瑚礁复合体的碳酸盐地层模型
影响因子：
2.5
作者：
E. Franseen;M. Esteban;W. Ward;J. Rouchy
通讯作者：
J. Rouchy