Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary
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...
Main Authors: | , |
---|---|
Format: | Report |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | http://ir.qdio.ac.cn/handle/337002/172168 |
id |
ftchinacasciocas:oai:ir.qdio.ac.cn:337002/172168 |
---|---|
record_format |
openpolar |
spelling |
ftchinacasciocas:oai:ir.qdio.ac.cn:337002/172168 2023-05-15T15:39:09+02:00 Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary Guo Shujin Sun Xiaoxia 2018-01-01 http://ir.qdio.ac.cn/handle/337002/172168 英语 eng JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/172168 PARTICULATE ORGANIC-CARBON NORTHERN BARENTS SEA MARGINAL ICE-ZONE VERTICAL FLUX PHYTOPLANKTON BLOOM SINKING VELOCITIES SEASONAL-VARIATION PERMANENT STATION NORWEGIAN SEA MARINE SNOW fecal pellets copepods production rates carbon export Changjiang (Yangtze) River estuary 期刊论文 2018 ftchinacasciocas 2022-06-27T05:44:25Z 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. Report Barents Sea Norwegian Sea Copepods Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Barents Sea Norwegian Sea |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
PARTICULATE ORGANIC-CARBON NORTHERN BARENTS SEA MARGINAL ICE-ZONE VERTICAL FLUX PHYTOPLANKTON BLOOM SINKING VELOCITIES SEASONAL-VARIATION PERMANENT STATION NORWEGIAN SEA MARINE SNOW fecal pellets copepods production rates carbon export Changjiang (Yangtze) River estuary |
spellingShingle |
PARTICULATE ORGANIC-CARBON NORTHERN BARENTS SEA MARGINAL ICE-ZONE VERTICAL FLUX PHYTOPLANKTON BLOOM SINKING VELOCITIES SEASONAL-VARIATION PERMANENT STATION NORWEGIAN SEA MARINE SNOW fecal pellets copepods production rates carbon export Changjiang (Yangtze) River estuary Guo Shujin Sun Xiaoxia Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary |
topic_facet |
PARTICULATE ORGANIC-CARBON NORTHERN BARENTS SEA MARGINAL ICE-ZONE VERTICAL FLUX PHYTOPLANKTON BLOOM SINKING VELOCITIES SEASONAL-VARIATION PERMANENT STATION NORWEGIAN SEA MARINE SNOW fecal pellets copepods production rates carbon export Changjiang (Yangtze) River estuary |
description |
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. |
format |
Report |
author |
Guo Shujin Sun Xiaoxia |
author_facet |
Guo Shujin Sun Xiaoxia |
author_sort |
Guo Shujin |
title |
Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary |
title_short |
Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary |
title_full |
Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary |
title_fullStr |
Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary |
title_full_unstemmed |
Carbon biomass, production rates and export flux of copepods fecal pellets in the Changjiang (Yangtze) River estuary |
title_sort |
carbon biomass, production rates and export flux of copepods fecal pellets in the changjiang (yangtze) river estuary |
publishDate |
2018 |
url |
http://ir.qdio.ac.cn/handle/337002/172168 |
geographic |
Barents Sea Norwegian Sea |
geographic_facet |
Barents Sea Norwegian Sea |
genre |
Barents Sea Norwegian Sea Copepods |
genre_facet |
Barents Sea Norwegian Sea Copepods |
op_relation |
JOURNAL OF OCEANOLOGY AND LIMNOLOGY http://ir.qdio.ac.cn/handle/337002/172168 |
_version_ |
1766370617221709824 |