Spatial distribution of pteropods from North Andaman Sea: Insights into aragonite supply and deposition in low saline, delta shelf regimes

IF 0.5 4区 地球科学 Q4 PALEONTOLOGY
R. Panchang, Rajiv Nigam, Mugdha Ambokar
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引用次数: 0

Abstract

Pteropods are important components of the marine zooplankton. Not only are they crucial parts of the pelagic ecosystem but are also key contributors to the global carbon budget. Their shells sink to the ocean floor contributing to the inorganic carbon supply to the ocean floor. Being aragonitic, they easily dissolve in oceans receiving fresh water. They also dissolve as they sink beyond the Aragonite Saturation Zone, that is, within the top 500 m of the water column, releasing the trapped CO2 into the surrounding waters. Their taxonomic and quantitative distribution on the modern ocean floor can help strengthen estimates of inorganic carbon supply in shallow oceans, which are also susceptible to climate-induced dissolution. The present study, for the first time, reports 18 pteropod taxa, their abundances and spatial distribution from the surface sediments of the Ayeyarwady Delta Shelf in the North Andaman Sea, characterised by a very high influx of riverine water and sediments.
北安达曼海翼足目动物的空间分布:低盐度三角洲陆架环境中文石供应和沉积的启示
翼足目动物是海洋浮游动物的重要组成部分。它们不仅是浮游生态系统的重要组成部分,也是全球碳预算的主要贡献者。它们的外壳沉入海底,为海底的无机碳供应做出了贡献。由于是文石质,它们很容易溶解在接受淡水的海洋中。当它们下沉到文石饱和带(即水柱顶部 500 米范围内)以外时,也会溶解,将捕获的二氧化碳释放到周围水域。它们在现代洋底的分类和定量分布有助于加强对浅海无机碳供应的估计,因为浅海也容易受到气候引起的溶解的影响。本研究首次报告了北安达曼海伊洛瓦底三角洲大陆架表层沉积物中的 18 个翼足类群及其丰度和空间分布,该大陆架的特点是河水和沉积物大量涌入。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
1.10
自引率
16.70%
发文量
0
期刊介绍: The journal is devoted to the publication of original papers and review articles dealing with all aspects of Paleontology, Paleobotany, Stratigraphy, Geochronology, Anthropology and Pre-history.
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