DOI: 10.1016/j.jag.2017.09.007
Scopus记录号: 2-s2.0-85032219250
论文题名: A novel earth observation based ecological indicator for cyanobacterial blooms
作者: Anttila S ; , Fleming-Lehtinen V ; , Attila J ; , Junttila S ; , Alasalmi H ; , Hällfors H ; , Kervinen M ; , Koponen S
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2018
卷: 64 起始页码: 145
结束页码: 155
语种: 英语
英文关键词: Cyanobacterial blooms
; Earth observation
; Ecological indicator
; Marine ecosystem assessment
Scopus关键词: algal bloom
; bioindicator
; cyanobacterium
; ecosystem management
; EOS
; eutrophication
; marine ecosystem
; remote sensing
; Atlantic Ocean
; Baltic Sea
; algae
; Cyanobacteria
英文摘要: Cyanobacteria form spectacular mass occurrences almost annually in the Baltic Sea. These harmful algal blooms are the most visible consequences of marine eutrophication, driven by a surplus of nutrients from anthropogenic sources and internal processes of the ecosystem. We present a novel Cyanobacterial Bloom Indicator (CyaBI) targeted for the ecosystem assessment of eutrophication in marine areas. The method measures the current cyanobacterial bloom situation (an average condition of recent 5 years) and compares this to the estimated target level for ‘good environmental status’ (GES). The current status is derived with an index combining indicative bloom event variables. As such we used seasonal information from the duration, volume and severity of algal blooms derived from earth observation (EO) data. The target level for GES was set by using a remote sensing based data set named Fraction with Cyanobacterial Accumulations (FCA; Kahru & Elmgren, 2014) covering years 1979–2014. Here a shift-detection algorithm for time series was applied to detect time-periods in the FCA data where the level of blooms remained low several consecutive years. The average conditions from these time periods were transformed into respective CyaBI target values to represent target level for GES. The indicator is shown to pass the three critical factors set for marine indicator development, namely it measures the current status accurately, the target setting can be scientifically proven and it can be connected to the ecosystem management goal. An advantage of the CyaBI method is that it's not restricted to the data used in the development work, but can be complemented, or fully applied, by using different types of data sources providing information on cyanobacterial accumulations. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79893
Appears in Collections: 气候变化事实与影响
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作者单位: Finnish Environment Institute SYKE, P O Box 140, Helsinki, Finland
Recommended Citation:
Anttila S,, Fleming-Lehtinen V,, Attila J,et al. A novel earth observation based ecological indicator for cyanobacterial blooms[J]. International Journal of Applied Earth Observation and Geoinformation,2018-01-01,64