The spatial dynamics of vertical migration by Microcystis aeruginosa in a eutrophic shallow lake: A case study using high spatial resolution time-series airborne remote sensing
The spatial dynamics of vertical migration by Microcystis aeruginosa in a eutrophic shallow lake: A case study using high spatial resolution time-series airborne remote sensing
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DOI：
10.4319/lo.2008.53.6.2391
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发表时间：
2008-11-01
影响因子：
4.5
通讯作者：
Gilvear, D. J.
中科院分区：
文献类型：
--
作者：
Hunter, P. D.;Tyler, A. N.;Gilvear, D. J.
时间序列航空遥感被用来监测可能有毒的蓝藻铜绿微囊藻在浅富营养沃茨的巴顿宽，英国的空间分布的日变化。2005年8月29日格林威治标准时间09：30、12：00和16：00，从紧凑型机载光谱成像仪（CASI-2）获得的高空间分辨率图像在巴顿布罗德上空。半经验离水辐射算法推导出的叶绿素a（R-2 = 0.96）和C-藻蓝蛋白（R-2 = 0.95）的量化和应用到CASI-2图像生成的动态，空间分辨地图的M。铜绿水华。水华的发展可能是由最近巴顿布罗德周围光环境的改善、生物可利用营养库的急性耗竭和稳定的水动力条件共同促成的。M.铜绿假单胞菌是高度一过性的;在非湍流混合（风速）期间，漂浮的菌落在清晨和傍晚形成了横跨湖面的近水面聚集体
Time-series airborne remote sensing was used to monitor diurnal changes in the spatial distribution of a bloom of the potentially toxic cyanobacterium Microcystis aeruginosa in the shallow eutrophic waters of Barton Broad, United Kingdom. High spatial resolution images from the Compact Airborne Spectrographic Imager (CASI-2) were acquired over Barton Broad on 29 August 2005 at 09: 30 h, 12: 00 h, and 16: 00 h Greenwich mean time. Semiempirical water-leaving radiance algorithms were derived for the quantification of chlorophyll a (R-2 = 0.96) and C-phycocyanin (R-2 = 0.95) and applied to the CASI-2 imagery to generate dynamic, spatially resolving maps of the M. aeruginosa bloom. The development of the bloom may have been fostered by a combination of the recent improvements in the ambient light environment of Barton Broad, allied to the acute depletion of bioavailable nutrient pools, and stable hydrodynamic conditions. The vertical distribution of M. aeruginosa was highly transient; buoyant colonies formed early morning and late afternoon near-surface aggregations across the lake during periods of nonturbulent mixing (wind speed