ENVIRONMENTAL CONTROLS ON THE DISTRIBUTION OF MODERN BENTHIC FORAMINIFERA IN THE FLORIDA EVERGLADES FOR THEIR USE AS PALEOENVIRONMENTAL INDICATORS

IF 0.9 4区 地球科学 Q4 PALEONTOLOGY
Z. R. Verlaak, L. Collins
{"title":"ENVIRONMENTAL CONTROLS ON THE DISTRIBUTION OF MODERN BENTHIC FORAMINIFERA IN THE FLORIDA EVERGLADES FOR THEIR USE AS PALEOENVIRONMENTAL INDICATORS","authors":"Z. R. Verlaak, L. Collins","doi":"10.1130/abs/2020am-355074","DOIUrl":null,"url":null,"abstract":"\n This study examined the environmental factors that control the distribution of modern foraminiferal assemblages in the Everglades in order to provide baseline data for a paleoenvironmental study. Total assemblages from the surface 2 cm of 30 sites across the marsh and mangrove environments of southwest Florida were investigated. Eight environmental variables, including average salinity, salinity range, pH, total phosphorus, temperature, and dissolved oxygen, and total organic carbon and total inorganic carbon measured on bulk sediments, as well as the elevation and distance from the coastline were determined for each of the 30 sampling locations.\n In total, 82 species were identified, the majority of which were calcareous. Diversity decreases, dominance increases, and agglutinated taxa increase from the coastline inland. Rotaliina are equally abundant across the intertidal environment, whereas Miliolina are common near the coast and in lagoons or inland lakes. The most important factor controlling foraminiferal distribution is total organic carbon, followed by total inorganic carbon, distance from coastline, total phosphorus, and salinity. Jadammina macrescens and Miliammina fusca indicate lower salinities (<15 psu). Good indicators for higher salinities are Haplophragmoides wilberti (10–20 psu) and Arenoparrella mexicana (10–20 psu and 28–30 psu). Ammonia spp. prefer salinities >15 psu and Elphidium spp. >20 psu. Ammonia tepida, Helenina anderseni, Trochammina inflata, and A. mexicana prefer organic-rich sediments. Thus, the benthic foraminifera from Everglades sediments are excellent salinity proxies and can be used to determine the history of habitat change in this area as well as to assess past trends in the rate of sea level rise.","PeriodicalId":54832,"journal":{"name":"Journal of Foraminiferal Research","volume":" ","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2021-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Foraminiferal Research","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1130/abs/2020am-355074","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PALEONTOLOGY","Score":null,"Total":0}
引用次数: 3

Abstract

This study examined the environmental factors that control the distribution of modern foraminiferal assemblages in the Everglades in order to provide baseline data for a paleoenvironmental study. Total assemblages from the surface 2 cm of 30 sites across the marsh and mangrove environments of southwest Florida were investigated. Eight environmental variables, including average salinity, salinity range, pH, total phosphorus, temperature, and dissolved oxygen, and total organic carbon and total inorganic carbon measured on bulk sediments, as well as the elevation and distance from the coastline were determined for each of the 30 sampling locations. In total, 82 species were identified, the majority of which were calcareous. Diversity decreases, dominance increases, and agglutinated taxa increase from the coastline inland. Rotaliina are equally abundant across the intertidal environment, whereas Miliolina are common near the coast and in lagoons or inland lakes. The most important factor controlling foraminiferal distribution is total organic carbon, followed by total inorganic carbon, distance from coastline, total phosphorus, and salinity. Jadammina macrescens and Miliammina fusca indicate lower salinities (<15 psu). Good indicators for higher salinities are Haplophragmoides wilberti (10–20 psu) and Arenoparrella mexicana (10–20 psu and 28–30 psu). Ammonia spp. prefer salinities >15 psu and Elphidium spp. >20 psu. Ammonia tepida, Helenina anderseni, Trochammina inflata, and A. mexicana prefer organic-rich sediments. Thus, the benthic foraminifera from Everglades sediments are excellent salinity proxies and can be used to determine the history of habitat change in this area as well as to assess past trends in the rate of sea level rise.
佛罗里达沼泽地现代底栖有孔虫分布的环境控制及其作为古环境指标的应用
本研究探讨了控制大沼泽地现代有孔虫组合分布的环境因素,以期为古环境研究提供基线数据。对佛罗里达州西南部沼泽和红树林环境中30个地点2厘米表面的总组合进行了调查。对30个采样点的平均盐度、盐度范围、pH值、总磷、温度、溶解氧、总有机碳和总无机碳以及海拔高度和距离海岸线的距离等8个环境变量进行了测定。共鉴定出82种,以钙质类居多。从海岸线向内陆,多样性减少,优势度增加,凝集类群增加。轮藻在潮间带环境中同样丰富,而百万藻在海岸附近、泻湖或内陆湖泊中很常见。控制有孔虫分布的最重要因素是总有机碳,其次是总无机碳、与海岸线的距离、总磷和盐度。水杨花(Jadammina macrescens)和黄水杨花(milammina fusca)的盐度较低(15 psu), Elphidium spp. bb10 - 20 psu。温氨虫、anderseni Helenina、Trochammina inflata和A. mexicana偏爱富含有机物的沉积物。因此,Everglades沉积物中的底栖有孔虫是很好的盐度指标,可以用来确定该地区栖息地变化的历史,也可以用来评估过去海平面上升速度的趋势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of Foraminiferal Research
Journal of Foraminiferal Research 地学-古生物学
CiteScore
2.10
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: JFR publishes original papers of international interest dealing with the Foraminifera and allied groups of organisms. Review articles are encouraged.
×
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