Detection of a late autumn Karenia papilionacea bloom in Virginia, USA, coastal waters

IF 5.5 1区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Jennifer L. Wolny , Michelle C. Tomlinson , Todd A. Egerton , Leah A. Gibala-Smith , Chyna B. Law , Ellen Gortz , Emma W. Brooks , Edward B. Whereat , Margaret R. Mulholland
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引用次数: 0

Abstract

A late autumn Karenia papilionacea bloom was detected within Virginia, USA shellfish harvesting areas in mid-November 2023. Using Imaging FlowCytobot (IFCB) data collected during the Northeast Fisheries Science Center Ecosystem Monitoring October – November 2023 cruise, we were able to document a larger Karenia bloom composed of K. papilionacea, K. brevis-like, K. mikimotoi, and Karenia sp. #3 cells offshore of Virginia three weeks prior to detection inshore. Both K. papilionacea and K. mikimotoi were detected in Virginia state waters (including shellfish harvesting areas) and offshore waters of the Delmarva Peninsula, whereas K. brevis-like and Karenia sp. #3 were only detected offshore. The IFCB data showed that along the cruise track the greatest cell concentrations were east of the Chesapeake Bay mouth on November 1, 2023. However, when conducting a match-up assessment of IFCB in situ data with Sentinel-3 Ocean and Land Colour Instrument (OLCI) satellite imagery using the Red Band Difference (RBD) algorithm, the majority of the bloom was undetected. By comparing in situ match-ups and RBD imagery with NOAA-20 satellite's Visible Infrared Imaging Radiometer Suite (VIIRS) chlorophyll anomaly product we hypothesize that the in situ sampling occurred along the bloom's edge, where cell concentrations were at or below the limit of satellite detection, and/or this particular Karenia bloom was either not fluorescing, expressing relatively low solar-induced chlorophyll fluorescence, or occurring at depths below satellite detection. For this bloom event, the IFCB dataset was also used as a training tool for students learning microscopy-based phytoplankton identification in a virtual environment.
美国维吉尼亚州近岸水域深秋一次凤尾花莲开花的检测
2023年11月中旬,在美国弗吉尼亚州的贝类采集区发现了深秋的Karenia papilionacea水华。利用Imaging FlowCytobot (IFCB)在2023年10月至11月东北渔业科学中心生态系统监测期间收集的数据,我们能够在弗吉尼亚近海发现由K. papilionacea, K. brevisian -样,K. mikimotoi和Karenia sp. #3细胞组成的较大的Karenia bloom。在弗吉尼亚州水域(包括贝类捕捞区)和德尔马瓦半岛近海水域均检测到papilionacea和K. mikimotoi,而K. brevis样和Karenia sp. #3仅在近海被检测到。IFCB的数据显示,2023年11月1日,沿着巡航路线,最大的细胞浓度出现在切萨皮克湾口以东。然而,当使用红带差分(RBD)算法对IFCB原位数据与Sentinel-3海洋和陆地颜色仪器(OLCI)卫星图像进行匹配评估时,大部分水华未被发现。通过将原位匹配和RBD图像与NOAA-20卫星的可见光红外成像辐射计套件(VIIRS)叶绿素异常产品进行比较,我们假设原位采样发生在藻华边缘,那里的细胞浓度等于或低于卫星检测的极限,并且/或者这个特定的Karenia华要么不发荧光,表达相对较低的太阳诱导叶绿素荧光,要么发生在低于卫星检测的深度。对于这次水华事件,IFCB数据集还被用作学生在虚拟环境中学习基于显微镜的浮游植物识别的培训工具。
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
Harmful Algae
Harmful Algae 生物-海洋与淡水生物学
CiteScore
12.50
自引率
15.20%
发文量
122
审稿时长
7.5 months
期刊介绍: This journal provides a forum to promote knowledge of harmful microalgae and macroalgae, including cyanobacteria, as well as monitoring, management and control of these organisms.
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