Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary

doi:10.1007/s00343-018-7057-1

	Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary
	Guo Shujin 1; Sun Xiaoxia1,2,3
	2018-07-01
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
卷号	36 期号:4 页码:1244-1254
通讯作者	Sun Xiaoxia([email protected])
摘要	Copepod fecal pellets are ubiquitous throughout the oceans. Their production and export can represent a highly efficient pathway of carbon export. However, the role these fecal pellets play in carbon export in the Changjiang (Yangtze) River estuary is not well known. Two cruises were carried out in the Changjiang estuary in the spring and summer of 2013, during which time carbon biomass, production, and export of copepod fecal pellets were studied. Spring and summer fecal pellet carbon biomass ranged 0.30-1.01 mg C/m(3) (mean=0.56 +/- 0.20 mg C/m(3)) and 0.31-1.18 mg C/m(3) (mean=0.64 +/- 0.24 mg C/m(3)), respectively, significantly lower than phytoplankton. At most stations, fecal pellet carbon biomass was higher in surface or subsurface layers than deeper layers. Production rates ranged 0.65-1.49 pellets/(ind.(.)h) (mean=1.02 +/- 0.27 pellets/(ind.(.)h)) in spring and 0.62-1.34 pellets/(ind.(.)h) (mean=0.98 +/- 0.22 pellets/(ind.(.)h)) in summer, within the range reported in previous studies. Higher production rates of fecal pellets occurred at stations with higher chlorophyll a concentrations, and production rates of copepods of size 500-1 000 mu m greater than copepods > 1 000 mu m during both cruises. The potential export flux of fecal pellets was slightly higher in summer (mean=68.95 +/- 14.37 mg C/(m(2).d)) than spring (mean=52.08 +/- 11.33 mg C/(m(2).d)) owing to higher summer copepod abundances. To our knowledge, this study is the first of its kind in the Changjiang estuary, and it confirms the significant role of copepod fecal pellets in local carbon export.
关键词	fecal pellets copepods production rates carbon export Changjiang (Yangtze) River estuary
DOI	10.1007/s00343-018-7057-1
收录类别	SCI
语种	英语
资助项目	Innovation Plan of Science and Technology for AoShan[2016ASKJ02]###2168; National Basic Research Program of China (973 Program)[2014CB441504]###2169; Strategic Priority Research Program-Western Pacific Ocean System of Chinese Academy of Sciences[XDA11030204]###2170; National Natural Science Foundation of China[31700425]###449; Innovation Plan of Science and Technology for AoShan[2016ASKJ02]; National Basic Research Program of China (973 Program)[2014CB441504]; Strategic Priority Research Program-Western Pacific Ocean System of Chinese Academy of Sciences[XDA11030204]; National Natural Science Foundation of China[31700425]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000441231100020
出版者	SCIENCE PRESS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/159925
专题	胶州湾海洋生态系统国家野外研究站
通讯作者	Sun Xiaoxia
作者单位	1.Chinese Acad Sci, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Guo Shujin,Sun Xiaoxia. Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2018,36(4):1244-1254.
APA	Guo Shujin,&Sun Xiaoxia.(2018).Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,36(4),1244-1254.
MLA	Guo Shujin,et al."Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 36.4(2018):1244-1254.