球虫亚科。作为对伊比利亚西海岸上升流制度变化的响应的布拉鲁迪形态可塑性

IF 1.3 4区地球科学 Q3 PALEONTOLOGY

Micropaleontology Pub Date : 2020-01-01 DOI:10.47894/mpal.66.6.06

Gonçalo Prista, Á. Narciso, M. Cachão

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引用次数: 3

摘要

化石球石藻的分类主要基于异球石藻生命周期阶段形态，在物种水平上，基于大小和形状的细微变化。球粒的大小与某些钙质纳米化石物种的常规鉴定有关，但形态计量学也可以作为研究其形态可塑性的工具。本文采用一种新的形态计量学统计方法，对伊比利亚西海岸全新世的pelagicus Coccolithus s.l.资料进行了重新评估。我们的研究结果表明，上古卷草亚种。黄颡鱼和黄颡鱼亚种。上古鱼在(古)环境变化中表现出形态可塑性，主要是葡萄牙西海岸上升流状态的变化和全新世冰期北大西洋(古)海洋学条件的变化。

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Coccolithus pelagicus subsp. braarudii morphological plasticity as a response to variations in the upwelling regime of the west coast of Iberia

Taxonomy of fossil coccolithophores is based primarily on the heterococcolith life cycle stagemorphology and, at species level, on fine variations in size and shape. Coccolith size is relevant on routine identification of certain calcareous nannofossil species, but morphometry can also be a tool to study their morphological plasticity. Here we used a new morphometric statistical method to reassess Coccolithus pelagicus s. l. data from the Holocene of the west coast of Iberia. Our results suggest that both C. pelagicus subsp. braarudii and C. pelagicus subsp. pelagicus present morphological plasticity in response to (paleo)environmental changes, mainly variations in the upwelling regime in the west coast of Portugal and (paleo)oceanographic conditions in the North Atlantic linked to glacial periods of the Holocene.

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来源期刊

Micropaleontology 地学-古生物学

CiteScore

3.20

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Micropalaeontology (JM) is an established international journal covering all aspects of microfossils and their application to both applied studies and basic research. In particular we welcome submissions relating to microfossils and their application to palaeoceanography, palaeoclimatology, palaeobiology, evolution, taxonomy, environmental change and molecular phylogeny. Owned by The Micropalaeontological Society, the scope of the journal is broad, demonstrating the application of microfossils to solving broad geoscience issues.