DOI: 10.1029/2019GB006265
论文题名: Sinking of Gelatinous Zooplankton Biomass Increases Deep Carbon Transfer Efficiency Globally
作者: Lebrato M. ; Pahlow M. ; Frost J.R. ; Küter M. ; de Jesus Mendes P. ; Molinero J.-C. ; Oschlies A.
刊名: Global Biogeochemical Cycles
ISSN: 0886-6236
EISSN: 1944-9224
出版年: 2019
卷: 33, 期: 12 语种: 英语
英文关键词: algal bloom
; biological pump
; biomass
; carbon flux
; phytodetritus
; primary production
; temperature profile
; trophic level
; zooplankton
; Cnidaria
; Scyphozoa
; Thaliacea
; Urochordata
学科: carbon
; gelatinous
; Jelly-C
; modeling
; transfer efficiency
; zooplankton
中文摘要: Gelatinous zooplankton (Cnidaria, Ctenophora, and Urochordata, namely, Thaliacea) are ubiquitous members of plankton communities linking primary production to higher trophic levels and the deep ocean by serving as food and transferring “jelly-carbon” (jelly-C) upon bloom collapse. Global biomass within the upper 200 m reaches 0.038 Pg C, which, with a 2–12 months life span, serves as the lower limit for annual jelly-C production. Using over 90,000 data points from 1934 to 2011 from the Jellyfish Database Initiative as an indication of global biomass (JeDI: http://jedi.nceas.ucsb.edu, http://www.bco-dmo.org/dataset/526852), upper ocean jelly-C biomass and production estimates, organism vertical migration, jelly-C sinking rates, and water column temperature profiles from GLODAPv2, we quantitatively estimate jelly-C transfer efficiency based on Longhurst Provinces. From the upper 200 m production estimate of 0.038 Pg C year−1, 59–72% reaches 500 m, 46–54% reaches 1,000 m, 43–48% reaches 2,000 m, 32–40% reaches 3,000 m, and 25–33% reaches 4,500 m. This translates into ~0.03, 0.02, 0.01, and 0.01 Pg C year−1, transferred down to 500, 1,000, 2,000, and 4,500 m, respectively. Jelly-C fluxes and transfer efficiencies can occasionally exceed phytodetrital-based sediment trap estimates in localized open ocean and continental shelves areas under large gelatinous blooms or jelly-C mass deposition events, but this remains ephemeral and transient in nature. This transfer of fast and permanently exported carbon reaching the ocean interior via jelly-C constitutes an important component of the global biological soft-tissue pump, and should be addressed in ocean biogeochemical models, in particular, at the local and regional scale. ©2019. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160073
Appears in Collections: 气候变化与战略
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作者单位: Geosciences Department, Christian-Albrechts-University Kiel (CAU), Kiel, Germany; Bazaruto Center for Scientific Studies (BCSS), Benguerra Island, Inhambane Province, Mozambique; GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany; South Florida Water Management District, West Palm Beach, FL, United States; Marine and Environmental Scientific and Technological Solutions (MAESTS), Bremen, Germany
Recommended Citation:
Lebrato M.,Pahlow M.,Frost J.R.,et al. Sinking of Gelatinous Zooplankton Biomass Increases Deep Carbon Transfer Efficiency Globally[J]. Global Biogeochemical Cycles,2019-01-01,33(12)