DOI: 10.1038/ngeo2861
论文题名: Annual boom-bust cycles of polar phytoplankton biomass revealed by space-based lidar
作者: Behrenfeld M.J. ; Hu Y. ; O'Malley R.T. ; Boss E.S. ; Hostetler C.A. ; Siegel D.A. ; Sarmiento J.L. ; Schulien J. ; Hair J.W. ; Lu X. ; Rodier S. ; Scarino A.J.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期: 2 起始页码: 118
结束页码: 122
语种: 英语
Scopus关键词: annual cycle
; annual variation
; biomass
; equilibrium
; food web
; ice cover
; lidar
; numerical model
; phytoplankton
; polar region
; population dynamics
; seasonal variation
; sensor
; Arctic and Antarctic
英文摘要: Polar plankton communities are among the most productive, seasonally dynamic and rapidly changing ecosystems in the global ocean. However, persistent cloud cover, periods of constant night and prevailing low solar elevations in polar regions severely limit traditional passive satellite ocean colour measurements and leave vast areas unobserved for many consecutive months each year. Consequently, our understanding of the annual cycles of polar plankton and their interannual variations is incomplete. Here we use space-borne lidar observations to overcome the limitations of historical passive sensors and report a decade of uninterrupted polar phytoplankton biomass cycles. We find that polar phytoplankton dynamics are categorized by â € boom-bust' cycles resulting from slight imbalances in plankton predator-prey equilibria. The observed seasonal-to-interannual variations in biomass are predicted by mathematically modelled rates of change in phytoplankton division. Furthermore, we find that changes in ice cover dominated variability in Antarctic phytoplankton stocks over the past decade, whereas ecological processes were the predominant drivers of change in the Arctic. We conclude that subtle and environmentally driven imbalances in polar food webs underlie annual phytoplankton boom-bust cycles, which vary interannually at each pole. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105845
Appears in Collections: 气候减缓与适应 科学计划与规划
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作者单位: Department of Botany and Plant Pathology, Cordley Hall 2082, Oregon State University, Corvallis, OR, United States; NASA Langley Research Center, MS 420, Hampton, VA, United States; School of Marine Sciences, 5706 Aubert Hall, University of Maine, Orono, Maine, United States; Earth Research Institute, Department of Geography, University of California, Santa Barbara, CA, United States; Atmospheric and Oceanic Sciences Program, Sayre Hall, Princeton University, 300 Forrestal Road, Princeton, NJ, United States
Recommended Citation:
Behrenfeld M.J.,Hu Y.,O'Malley R.T.,et al. Annual boom-bust cycles of polar phytoplankton biomass revealed by space-based lidar[J]. Nature Geoscience,2017-01-01,10(2)