DOI: 10.1111/gcb.12352
论文题名: Seasonality of North Atlantic phytoplankton from space: Impact of environmental forcing on a changing phenology (1998-2012)
作者: González Taboada F. ; Anadón R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 3 起始页码: 698
结束页码: 712
语种: 英语
英文关键词: MODIS
; North Atlantic Ocean
; Ocean Colour
; Phytoplankton phenology
; Remote sensing
; SeaWiFS
Scopus关键词: algal bloom
; carbon fixation
; chlorophyll a
; environmental factor
; MODIS
; ocean color
; phenology
; phytoplankton
; remote sensing
; sea surface temperature
; seasonal variation
; seasonality
; SeaWiFS
; sedimentation
; wind forcing
; Atlantic Ocean
; Atlantic Ocean (North)
; chlorophyll
; chlorophyll a
; article
; Atlantic Ocean
; eutrophication
; microclimate
; MODIS
; North Atlantic Ocean
; Ocean Colour
; physiology
; phytoplankton
; Phytoplankton phenology
; remote sensing
; season
; SeaWiFS
; temperature
; wind
; MODIS
; North Atlantic Ocean
; Ocean Colour
; Phytoplankton phenology
; Remote sensing
; SeaWiFS
; Atlantic Ocean
; Chlorophyll
; Eutrophication
; Extraterrestrial Environment
; Phytoplankton
; Remote Sensing Technology
; Seasons
; Temperature
; Wind
英文摘要: Seasonal pulses of phytoplankton drive seasonal cycles of carbon fixation and particle sedimentation, and might condition recruitment success in many exploited species. Taking advantage of long-term series of remotely sensed chlorophyll a (1998-2012), we analyzed changes in phytoplankton seasonality in the North Atlantic Ocean. Phytoplankton phenology was analyzed based on a probabilistic characterization of bloom incidence. This approach allowed us to detect changes in the prevalence of different seasonal cycles and, at the same time, to estimate bloom timing and magnitude taking into account uncertainty in bloom detection. Deviations between different sensors stressed the importance of a prolonged overlap between successive missions to ensure a correct assessment of phenological changes, as well as the advantage of semi-analytical chlorophyll algorithms over empirical ones to reduce biases. Earlier and more intense blooms were detected in the subpolar Atlantic, while advanced blooms of less magnitude were common in the Subtropical gyre. In the temperate North Atlantic, spring blooms advanced their timing and decreased in magnitude, whereas fall blooms delayed and increased their intensity. At the same time, the prevalence of locations with a single autumn/winter bloom or with a bimodal seasonal cycle increased, in consonance with a poleward expansion of subtropical conditions. Changes in bloom timing and magnitude presented a clear signature of environmental factors, especially wind forcing, although changes on incident photosynthetically active radiation and sea surface temperature were also important depending on latitude. Trends in bloom magnitude matched changes in mean chlorophyll a during the study period, suggesting that seasonal peaks drive long-term trends in chlorophyll a concentration. Our results link changes in North Atlantic climate with recent trends in the phenology of phytoplankton, suggesting an intensification of these impacts in the near future. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61971
Appears in Collections: 影响、适应和脆弱性
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作者单位: Área de Ecología, Dpto. Biología de Organismos y Sistemas, Universidad de Oviedo, C/Valentín Andrés Álvarez s/n, E33071 Oviedo, Asturias, Spain
Recommended Citation:
González Taboada F.,Anadón R.. Seasonality of North Atlantic phytoplankton from space: Impact of environmental forcing on a changing phenology (1998-2012)[J]. Global Change Biology,2014-01-01,20(3)