DOI: 10.1002/2015GL064540
论文题名: Phytoplankton biomass cycles in the North Atlantic subpolar gyre: A similar mechanism for two different blooms in the Labrador Sea
作者: Lacour L. ; Claustre H. ; Prieur L. ; D'Ortenzio F.
刊名: Geophysical Research Letters
ISSN: 0094-9609
EISSN: 1944-9340
出版年: 2015
卷: 42, 期: 13 起始页码: 5403
结束页码: 5410
语种: 英语
英文关键词: bioregions
; Labrador Sea
; light-mixing regime
; phytoplankton biomass cycle
Scopus关键词: Mixing
; Phytoplankton
; Bioregions
; Climatological scale
; Labrador Sea
; North Atlantic
; Phytoplankton biomass
; Seasonal variation
; Surface chlorophyll
; Threshold-value
; Biomass
; algal bloom
; biogeographical region
; biomass
; chlorophyll
; gyre
; light
; marine ecosystem
; phenology
; phytoplankton
; seasonal variation
; Atlantic Ocean
; Labrador Sea
英文摘要: An analysis of seasonal variations in climatological surface chlorophyll points to distinct biogeographical zones in the North Atlantic subpolar gyre. In particular, the Labrador Sea appears well delineated into two regions on either side of the 60°N parallel, with very different climatological phytoplankton biomass cycles. Indeed, north of 60°N, an early and short spring bloom occurs in late April, while south of 60°N, the bloom gradually develops 1month later and significant biomass persists all summer long. Nevertheless, at climatological scale, the first-order mechanism that controls the bloom is identical for both bioregions. The light-mixing regime can explain the bloom onset in both bioregions. In the Labrador Sea, the blooms seem to rely on a mean community compensation irradiance threshold value of 2.5molphotonm-2d-1 over the mixed layer. Key Points Bioregionalization reveals two distinct regions in the Labrador Sea Both bioregions present very different bloom phenology The light-mixing regime can explain these two bloom phenologies. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938206498&doi=10.1002%2f2015GL064540&partnerID=40&md5=42175fc2495b7cd096bd5e8309e7bba6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9224
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Sorbonne Universités, UPMC Université Paris 06, UMR 7093, Observatoire Océanologique, Villefranche-sur-Mer, France
Recommended Citation:
Lacour L.,Claustre H.,Prieur L.,et al. Phytoplankton biomass cycles in the North Atlantic subpolar gyre: A similar mechanism for two different blooms in the Labrador Sea[J]. Geophysical Research Letters,2015-01-01,42(13).