DOI: 10.1002/gbc.20031
Scopus记录号: 2-s2.0-84881094196
论文题名: Diel vertical migration: Ecological controls and impacts on the biological pump in a one-dimensional ocean model
作者: Bianchi D ; , Stock C ; , Galbraith E ; D ; , Sarmiento J ; L
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2013
卷: 27, 期: 2 起始页码: 478
结束页码: 491
语种: 英语
英文关键词: diel vertical migration
; ecosystem model
; ocean biogeochemistry
; zooplankton
Scopus关键词: Biogeochemical dynamics
; Diel vertical migrations
; Ecosystem model
; Fundamental component
; Metabolic process
; Migration dynamics
; Ocean biogeochemistry
; zooplankton
; Biogeochemistry
; Carbon
; Digital voltmeters
; Ecosystems
; Nutrients
; Physiology
; Plankton
; Oceanography
; biogeochemistry
; biological pump
; biome
; diel variation
; ecosystem modeling
; excretion
; food availability
; light intensity
; marine ecosystem
; micronekton
; one-dimensional modeling
; parameterization
; predation
; vertical migration
; zooplankton
; Pacific Ocean
英文摘要: Diel vertical migration (DVM) of zooplankton and micronekton is widespread in the ocean and forms a fundamental component of the biological pump, but is generally overlooked in global models of the Earth system. We develop a parameterization of DVM in the ocean and integrate it with a size-structured NPZD model. We assess the model's ability to recreate ecosystem and DVM patterns at three well-observed Pacific sites, ALOHA, K2, and EQPAC, and use it to estimate the impact of DVM on marine ecosystems and biogeochemical dynamics. Our model includes the following: (1) a representation of migration dynamics in response to food availability and light intensity; (2) a representation of the digestive and metabolic processes that decouple zooplankton feeding from excretion, egestion, and respiration; and (3) a light-dependent parameterization of visual predation on zooplankton. The model captures the first-order patterns in plankton biomass and productivity across the biomes, including the biomass of migrating organisms. We estimate that realistic migratory populations sustain active fluxes to the mesopelagic zone equivalent to between 15% and 40% of the particle export and contribute up to half of the total respiration within the layers affected by migration. The localized active transport has important consequences for the cycling of oxygen, nutrients, and carbon. We highlight the importance of decoupling zooplankton feeding and respiration and excretion with depth for capturing the impact of migration on the redistribution of carbon and nutrients in the upper ocean. ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77623
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric and Ocean Sciences, Princeton University, Sayre Hall, 300 Forrestal Rd., Princeton, NJ 08544, United States; NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States; Department of Earth and Planetary Science, McGill University, Montreal, QC, Canada
Recommended Citation:
Bianchi D,, Stock C,, Galbraith E,et al. Diel vertical migration: Ecological controls and impacts on the biological pump in a one-dimensional ocean model[J]. Global Biogeochemical Cycles,2013-01-01,27(2)