南极洲东部普里兹湾陆地快冰融化阶段的浮游植物群落结构

IF 1.5 4区 地球科学 Q3 ECOLOGY
Pratiksha D. Deshmukh, Jenson V. George, Ravidas K. Naik, Shramik M. Patil, Melena A. Soares, Ajay Bhadran, N. Anilkumar
{"title":"南极洲东部普里兹湾陆地快冰融化阶段的浮游植物群落结构","authors":"Pratiksha D. Deshmukh,&nbsp;Jenson V. George,&nbsp;Ravidas K. Naik,&nbsp;Shramik M. Patil,&nbsp;Melena A. Soares,&nbsp;Ajay Bhadran,&nbsp;N. Anilkumar","doi":"10.1016/j.polar.2024.101046","DOIUrl":null,"url":null,"abstract":"<div><p><span><span><span><span><span>Phytoplankton, the primary producers of all aquatic systems, form the base of the marine food web. Any change in the environmental settings of the given ecosystem will affect the phytoplankton community structure of the region. In the present work, water sampling was carried out from the poorly explored </span>polar region, beneath the sea ice during the melting phase of land-fast ice near Indian Antarctic Research Station Bharati in Prydz Bay, East </span>Antarctica. The water samples were analyzed for phytoplankton </span>species diversity, nutrients, temperature, </span>salinity, and Chlorophyll </span><em>a</em> (Chl <em>a</em>). Our observations indicate marked variations in phytoplankton biomass and community. A shift from diatom (<em>Thalassiosira</em> sp., <em>Fragilariopsis</em><span> sp.) to dinoflagellate (</span><em>Protoperidinium</em><span> sp.) community, along with the emergence of grazers was seen by the end of the observation period. The background environmental conditions also showed marked variations, as the concentration of nitrate at 0m depth reduced from 31.8 μM at Obs-1 to a non-detectable limit at Obs-3. Furthermore, at 0m depth, temperature increased from −1.32 °C at Obs-1 to −0.38 °C at Obs-3 while salinity decreased from 34.11 at Obs-1 to 33.68 at Obs-3, thus indicating the melting phase of sea ice from Obs-1 to Obs-3. These observations showed vertical stratification resulting from the basal melting of land-fast sea ice resulted in better availability of light, phytoplankton community change due to nutrient availability/utilization/limitation, followed by the presence of grazer community. This preliminary understanding will serve as a baseline dataset to design the targeted sampling/experiments in the future from the land-fast ice ecosystem.</span></p></div>","PeriodicalId":20316,"journal":{"name":"Polar Science","volume":"40 ","pages":"Article 101046"},"PeriodicalIF":1.5000,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Phytoplankton community structure during the melting phase of the land-fast ice in Prydz Bay, east Antarctica\",\"authors\":\"Pratiksha D. Deshmukh,&nbsp;Jenson V. George,&nbsp;Ravidas K. Naik,&nbsp;Shramik M. Patil,&nbsp;Melena A. Soares,&nbsp;Ajay Bhadran,&nbsp;N. Anilkumar\",\"doi\":\"10.1016/j.polar.2024.101046\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><span><span><span><span><span>Phytoplankton, the primary producers of all aquatic systems, form the base of the marine food web. Any change in the environmental settings of the given ecosystem will affect the phytoplankton community structure of the region. In the present work, water sampling was carried out from the poorly explored </span>polar region, beneath the sea ice during the melting phase of land-fast ice near Indian Antarctic Research Station Bharati in Prydz Bay, East </span>Antarctica. The water samples were analyzed for phytoplankton </span>species diversity, nutrients, temperature, </span>salinity, and Chlorophyll </span><em>a</em> (Chl <em>a</em>). Our observations indicate marked variations in phytoplankton biomass and community. A shift from diatom (<em>Thalassiosira</em> sp., <em>Fragilariopsis</em><span> sp.) to dinoflagellate (</span><em>Protoperidinium</em><span> sp.) community, along with the emergence of grazers was seen by the end of the observation period. The background environmental conditions also showed marked variations, as the concentration of nitrate at 0m depth reduced from 31.8 μM at Obs-1 to a non-detectable limit at Obs-3. Furthermore, at 0m depth, temperature increased from −1.32 °C at Obs-1 to −0.38 °C at Obs-3 while salinity decreased from 34.11 at Obs-1 to 33.68 at Obs-3, thus indicating the melting phase of sea ice from Obs-1 to Obs-3. These observations showed vertical stratification resulting from the basal melting of land-fast sea ice resulted in better availability of light, phytoplankton community change due to nutrient availability/utilization/limitation, followed by the presence of grazer community. This preliminary understanding will serve as a baseline dataset to design the targeted sampling/experiments in the future from the land-fast ice ecosystem.</span></p></div>\",\"PeriodicalId\":20316,\"journal\":{\"name\":\"Polar Science\",\"volume\":\"40 \",\"pages\":\"Article 101046\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polar Science\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1873965224000033\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polar Science","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1873965224000033","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

浮游植物是所有水生系统的初级生产者,是海洋食物网的基础。特定生态系统环境的任何变化都会影响该地区的浮游植物群落结构。在本研究中,我们在南极洲东部普里兹湾印度南极研究站巴拉蒂附近的陆地快冰融化阶段,从海冰下勘探不足的极地区域进行了水样采集。对水样进行了浮游植物物种多样性、营养物质、温度、盐度和叶绿素 a(Chl a)分析。我们的观察结果表明,浮游植物的生物量和群落有明显的变化。在观察期结束时,硅藻(Thalassiosira sp.、Fragilariopsis sp.)群落向甲藻(Protoperidinium sp.)群落转变,同时出现了食草动物。背景环境条件也发生了明显变化,0 米深处的硝酸盐浓度从观察-1 的 31.8 μM 降至观察-3 的检测不到。此外,0 米深处的温度从观测值-1 的 -1.32 ℃上升到观测值-3 的-0.38 ℃,而盐度则从观测值-1 的 34.11 ℃下降到观测值-3 的 33.68 ℃,这表明从观测值-1 到观测值-3,海冰处于融化阶段。这些观测结果表明,陆快海冰的基底融化导致垂直分层,从而改善了光的供应,浮游植物群落因营养物质的供应/利用/限制而发生变化,随后出现了食草动物群落。这一初步认识将作为基线数据集,用于设计今后在陆地-快冰生态系统中进行的有针对性的采样/实验。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phytoplankton community structure during the melting phase of the land-fast ice in Prydz Bay, east Antarctica

Phytoplankton, the primary producers of all aquatic systems, form the base of the marine food web. Any change in the environmental settings of the given ecosystem will affect the phytoplankton community structure of the region. In the present work, water sampling was carried out from the poorly explored polar region, beneath the sea ice during the melting phase of land-fast ice near Indian Antarctic Research Station Bharati in Prydz Bay, East Antarctica. The water samples were analyzed for phytoplankton species diversity, nutrients, temperature, salinity, and Chlorophyll a (Chl a). Our observations indicate marked variations in phytoplankton biomass and community. A shift from diatom (Thalassiosira sp., Fragilariopsis sp.) to dinoflagellate (Protoperidinium sp.) community, along with the emergence of grazers was seen by the end of the observation period. The background environmental conditions also showed marked variations, as the concentration of nitrate at 0m depth reduced from 31.8 μM at Obs-1 to a non-detectable limit at Obs-3. Furthermore, at 0m depth, temperature increased from −1.32 °C at Obs-1 to −0.38 °C at Obs-3 while salinity decreased from 34.11 at Obs-1 to 33.68 at Obs-3, thus indicating the melting phase of sea ice from Obs-1 to Obs-3. These observations showed vertical stratification resulting from the basal melting of land-fast sea ice resulted in better availability of light, phytoplankton community change due to nutrient availability/utilization/limitation, followed by the presence of grazer community. This preliminary understanding will serve as a baseline dataset to design the targeted sampling/experiments in the future from the land-fast ice ecosystem.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Polar Science
Polar Science ECOLOGY-GEOSCIENCES, MULTIDISCIPLINARY
CiteScore
3.90
自引率
5.60%
发文量
46
期刊介绍: Polar Science is an international, peer-reviewed quarterly journal. It is dedicated to publishing original research articles for sciences relating to the polar regions of the Earth and other planets. Polar Science aims to cover 15 disciplines which are listed below; they cover most aspects of physical sciences, geosciences and life sciences, together with engineering and social sciences. Articles should attract the interest of broad polar science communities, and not be limited to the interests of those who work under specific research subjects. Polar Science also has an Open Archive whereby published articles are made freely available from ScienceDirect after an embargo period of 24 months from the date of publication. - Space and upper atmosphere physics - Atmospheric science/climatology - Glaciology - Oceanography/sea ice studies - Geology/petrology - Solid earth geophysics/seismology - Marine Earth science - Geomorphology/Cenozoic-Quaternary geology - Meteoritics - Terrestrial biology - Marine biology - Animal ecology - Environment - Polar Engineering - Humanities and social sciences.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信