RELATIONSHIPS BETWEEN FORAMINIFERAL ASSEMBLAGES AND HYDRODYNAMICS IN THE GULF OF KALLONI, GREECE
RELATIONSHIPS BETWEEN FORAMINIFERAL ASSEMBLAGES AND HYDRODYNAMICS IN THE GULF OF KALLONI, GREECE
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希腊卡洛尼湾有孔虫组合与流体动力学之间的关系
DOI：
10.2113/35.4.327
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发表时间：
2005
影响因子：
1.1
通讯作者：
M. O. Angelidis
中科院分区：
文献类型：
--
作者：
J. Debenay;B. Millet;M. O. Angelidis
在希腊的卡洛尼湾进行了两个季节的采样，记录了这个深而窄的海湾的有孔虫动物群，并证明了环流动力学和有孔虫组合的组成之间的密切关系。1993年4月对17个站进行了抽样调查，1993年9月对12个站进行了抽样调查。有孔虫组合的分布进行比较，选择性的环境参数的措施，通常没有，但在二维垂直综合水动力学模型的基础上计算的潮汐和风引起的电流的流通。海洋影响的不对称延伸，导致水循环，以及更大的限制在中心的回旋电流显然影响有孔虫组合的分布。由于这些关系，6个优势种作为良好的描述水动力条件，其中，氨tepida和Haynesina sp。Q型和R型聚类分析以及根据选定物种计算的环境指数（Ic）也显示出与水动力学的明确关系，例如远离河口的海洋条件更加有限，南部沿海沿着的海洋影响更大。特别是，Ic似乎是一个有用的工具，用于快速表征环境，包括检测任何人为影响。最显著的影响，高有机质输入，结果在较低的密度和物种丰富度，较高的Ic指数和增加的优势的耐受物种氨tepida和Haynesina sp。
A two-season sampling program in the Gulf of Kalloni, Greece, documents the foraminiferal fauna of this deep, narrow embayment and demonstrates a close relationship between circulation dynamics and the composition of foraminiferal assemblages. Seventeen stations were sampled in April 1993 and twelve in September 1993. The distribution of foraminiferal assemblages was not compared to selective measures of environmental parameters, as usually done, but to the circulation of tide-and wind-induced currents computed on the basis of a 2D vertical integrated hydrodynamic model. The asymmetric extension of marine influence, resulting from the water circulation, and the greater confinement in the center of gyratory currents clearly affects the distribution of foraminiferal assemblages. Owing to these relationships, six dominant species serve as good descriptors of hydrodynamic conditions; of those, Ammonia tepida and Haynesina sp. are the most important. Q-mode and R-mode cluster analyses, as well as the environment index (Ic) calculated on the basis of selected species, also show clear relationships with hydrodynamics, such as more restricted marine conditions away from the mouth and a stronger marine influence along the southern coast. In particular, Ic appears to serve as a useful tool for a quick characterization of the environment, including the detection of any anthropogenic impact. The most significant impact, high organic matter input, results in a lower density and species richness, a higher Ic index and increased dominance of the tolerant species Ammonia tepida and Haynesina sp.