Paleoecología de ostrácodos holocenos del estuario del Río Quequén Grande (Provincia de Buenos Aires)
Paleoecología de ostrácodos holocenos del estuario del Río Quequén Grande (Provincia de Buenos Aires)
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古生态学 de ostrácodos Holocenos del Río Quequén Grande (布宜诺斯艾利斯省)
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发表时间：
1996
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通讯作者：
Laura Ferrero
中科院分区：
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作者：
Laura Ferrero
对曲昆-格兰德河北缘全新世露头的介形类进行了研究。结合介形类物种的生态特征和不同组合的数量组合，对层序进行了古生态解释。共鉴定21个分类群，图示12个种。研究层序的底部(7640±90yrBP)代表了相对高能的微咸水环境(中盐至多盐水域)。其次是平静和浅水的环境，淡水输入较多，能量较低；向层序顶部(7130±90yrBP)，介形类记录表明有海洋联系和不断增加的能量条件。
Ostracods from a Holocene outcrop on the northern margin of the Quequen Grande river were studied. Taking into account the ecological characteristics of the ostracod species and the quantitative cornposition of the different associations, a palaeoecological interpretation of the sequence was made. A total of twenty-one taxa were identified; twelve species are illustrated. The base of the studied sequence (7640±90 yr BP) is represented by relatively high energy brackish environments (mesohaline to polyhaline waters). Environments of calm and shallow water with a greater freshwater input and low energy followed; towards the top of the sequence (from 7130±90 yr BP), the ostracod record suggests a marine connection and increasing energy conditions.