气候变化领域集成服务门户(CCPortal): Carbon Budgets of Mesozooplankton Copepod Communities in the Eastern Atlantic Ocean—Regional and Vertical Patterns Between 24°N and 21°S

CCPortal

DOI	10.1029/2017GB005807
	Carbon Budgets of Mesozooplankton Copepod Communities in the Eastern Atlantic Ocean—Regional and Vertical Patterns Between 24°N and 21°S
	Bode M.; Koppelmann R.; Teuber L.; Hagen W.; Auel H.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	840
结束页码	857
卷号	32 期号:5
英文摘要	The copepods' impact on vertical carbon flux was assessed for stratified depth layers down to 2,000 m at six stations along a transect between 24°N and 21°S in the eastern Atlantic Ocean in October/November 2012. Total copepod community consumption ranged from 202 to 604 mg C m−2 day−1, with highest ingestion rates in the tropical North Atlantic. Calanoids consumed 75–90% of the particulate organic carbon (POC) ingested by copepods, although the relative contribution of cyclopoids (mostly Oncaeidae) increased with depth. Net ingestion (= consumption − fecal pellet egestion) of POC varied from 106 to 379 mg C m−2 day−1 for calanoids and 37–51 mg C m−2 day−1 for cyclopoids, corresponding to 16–58% and 5–9%, respectively, of primary production (PP). In total, 9–33% and 2–5% of PP were respired as inorganic carbon by calanoids and cyclopoids, respectively. Copepod ingestion was highly variable between stations and depth layers, especially in the epipelagic and upper mesopelagic zone. Diel vertical migrants such as Pleuromamma enhanced the vertical flux to deeper layers, particularly in the region influenced by the Benguela Current. The impact of copepod communities on POC flux decreased below 1,000 m, and POC resources reaching the bathypelagic zone were far from being fully exploited by copepods. As key components, copepods are important mediators of carbon fluxes in the ocean. Their biomass, community composition, and interactions strongly affect the magnitude of organic carbon recycled or exported to deeper layers. High variability, even at smaller vertical scales, emphasizes the complex dynamics of the biological carbon pump. ©2018. American Geophysical Union. All Rights Reserved.
英文关键词	carbon flux; community consumption; deep sea; grazing impact; ingestion; respiration
语种	英语
scopus关键词	biological pump; carbon budget; carbon flux; crustacean; inorganic carbon; mesopelagic zone; particulate organic carbon; photic zone; primary production; respiration; Atlantic Ocean; Atlantic Ocean (East); Atlantic Ocean (North); Benguela Current; Calanoida; Copepoda; Cyclopoida; Oncaeidae; Pleuromamma
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129828
作者单位	BreMarE—Bremen Marine Ecology, Marine Zoology, University of Bremen, Bremen, Germany; University of Hamburg, Institute for Hydrobiology and Fisheries Sciences, Hamburg, Germany
推荐引用方式 GB/T 7714	Bode M.,Koppelmann R.,Teuber L.,等. Carbon Budgets of Mesozooplankton Copepod Communities in the Eastern Atlantic Ocean—Regional and Vertical Patterns Between 24°N and 21°S[J],2018,32(5).
APA	Bode M.,Koppelmann R.,Teuber L.,Hagen W.,&Auel H..(2018).Carbon Budgets of Mesozooplankton Copepod Communities in the Eastern Atlantic Ocean—Regional and Vertical Patterns Between 24°N and 21°S.Global Biogeochemical Cycles,32(5).
MLA	Bode M.,et al."Carbon Budgets of Mesozooplankton Copepod Communities in the Eastern Atlantic Ocean—Regional and Vertical Patterns Between 24°N and 21°S".Global Biogeochemical Cycles 32.5(2018).