Carbon biomass,production rates and export flux of copepods fecal pellets in the Changjiang(Yangtze) River estuary
文献类型：CNKI期刊论文
| 作者 | Guo SJ(郭术津); Sun XX(孙晓霞)
|
| 发表日期 | 2018-07-15 |
| 出处 | Journal of Oceanology and Limnology
 |
| 关键词 | fecal pellets copepods production rates carbon export Changjiang(Yangtze) River estuary |
| 英文摘要 | 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 μm greater than copepods >1 000 μm 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Innovation Plan of Science and Technology for Ao Shan(No.2016ASKJ02) ; the National Basic Research Program of China(973 Program)(No.2014CB441504) ; the “Strategic Priority Research Program-Western Pacific Ocean System” of Chinese Academy of Sciences(No.XDA11030204) ; the National Natural Science Foundation of China(No.31700425) |
| 卷 | v.36期:04页:218-228 |
| 语种 | 英文; |
| 分类号 | X52 |
| ISSN号 | 2096-5508 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/188879]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.JiaozhouBayMarineEcosystemResearchStation,ChineseAcademyofSciences 2.LaboratoryforMarineEcologyandEnvironmentalScience,QingdaoNationalLaboratoryforMarineScienceandTechnology 3.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Guo SJ,Sun XX. Carbon biomass,production rates and export flux of copepods fecal pellets in the Changjiang(Yangtze) River estuary. 2018. |
入库方式： OAI收割
来源：海洋研究所
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