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Fluorescence-based approach to estimate the chlorophyll-a concentration of a phytoplankton bloom in Ardley Cove (Antarctica)
Citation
Zeng, C and Zeng, T and Fischer, AM and Xu, H, Fluorescence-based approach to estimate the chlorophyll-a concentration of a phytoplankton bloom in Ardley Cove (Antarctica), Remote Sensing, 9, (3) Article 210. ISSN 2072-4292 (2017) [Refereed Article]
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Copyright Statement
Copyright 2017 The Author(s) Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
Abstract
A phytoplankton bloom occurred in Ardley Cove, King George Island in January 2016,
during which maximum chlorophyll-a reached 9.87 mg/m3. Records show that blooms have
previously not occurred in this area prior to 2010 and the average chlorophyll-a concentration
between 1991 and 2009 was less than 2 mg/m3. Given the lack of in situ measurements and the poor
performance of satellite algorithms in the Southern Ocean and Antarctic waters, we validate and
assess several chlorophyll-a algorithms and apply an improved baseline fluorescence approach to
examine this bloom event. In situ water properties including in vivo fluorescence, water leaving
radiance, and solar irradiance were collected to evaluate satellite algorithms and characterize
chlorophyll-a concentration, as well as dominant phytoplankton groups. The results validated
the nFLH fluorescence baseline approach, resulting in a good agreement at this high latitude, high
chlorophyll-a region with correlation at 59.46%. The dominant phytoplankton group within the bloom
was micro-phytoplankton, occupying 79.58% of the total phytoplankton community. Increasing sea
ice coverage and sea ice concentration are likely responsible for increasing phytoplankton blooms in
the recent decade. Given the profound influence of climate change on sea-ice and phytoplankton
dynamics in the region, it is imperative to develop accurate methods of estimating the spatial
distribution and concentrations of the increasing occurrence of bloom events.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Chlorophyll-a estimation, fluorescence approach, King George Island, phytoplankton bloom |
| Research Division: | Engineering |
| Research Group: | Geomatic Engineering |
| Research Field: | Photogrammetry and Remote Sensing |
| Objective Division: | Environment |
| Objective Group: | Flora, Fauna and Biodiversity |
| Objective Field: | Coastal and Estuarine Flora, Fauna and Biodiversity |
| UTAS Author: | Fischer, AM (Dr Andy Fischer) |
| ID Code: | 114818 |
| Year Published: | 2017 |
| Deposited By: | Ecology and Biodiversity |
| Deposited On: | 2017-02-28 |
| Last Modified: | 2018-04-18 |
| Downloads: | 97 View Download Statistics |
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