IOCAS-IR  > 海洋生物分类与系统演化实验室
Community composition, distribution, and contribution of microbenthos in offshore sediments from the Yellow Sea
Meng, Zhaocui1,2; Xu, Kuidong1; Lei, Yanli1; Xu, KD (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2011-09-15
发表期刊CONTINENTAL SHELF RESEARCH
ISSN0278-4343
卷号31期号:14页码:1437-1446
文章类型Article
摘要We investigated the spatial distribution and composition of microbenthos in the seafloor sediments from 48 stations in the Yellow Sea using epifluorescence microscopy and quantitative protargol staining techniques. The bacterial abundance ranged from 2.4 x 10(8) to 1.9 x 10(9) cells cm(-3) in the wet sediment, about three orders of magnitude higher than that of phototrophic (PNFs, from 6.4 x 10(5) to 8.8 x 10(6) cells cm(-3)) and heterotrophic nanoflagellates (HNFs, from 5.8 x 10(4) to 5.9 x 10(6) cells cm(-3)) and four orders of magnitude higher than that of cyanobacteria (from 2.3 x 10(4) to 2.3 x 10(6) cells cm(-3)) in the upper 5 cm of sediments. The abundance of diatoms varied greatly, from 3-1.1 x 10(5) cells cm(-3) in the upper 8 cm of sediments, whereas those of heterotrophic microflagellates (HMFs, 1-182 cells cm(-3)) and ciliates (1-221 cells cm(-3)) were less varied and lower. The biomass partitioning indicates the primary importance of benthic bacteria (503 mu g C cm(-3) on average), followed by PNFs (40.7 mu g C cm(-3)), HNFs (19.3 mu g C cm(-3)), and finally by cyanobacteria (8.8 mu g C cm(-3)). Benthic diatoms (0.8 mu g C cm(-3)), ciliates (0.15 mu g C cm(-3)), and HMFs (0.03 mu g C cm(-3)) contribute relatively small fractions to the total biomass of the microbenthos. About 95% of diatoms, 77% of ciliates, and 56% of HMFs were distributed in the upper 2 cm of sediments, whereas no distinct vertical distributions were observed for bacteria, cyanobacteria, PNFs, and HNFs. The microbenthos are quantitatively important in the shallow seafloor, wherein their main components have an average abundance three orders of magnitude higher than the corresponding planktonic organisms in the same sea area. Our estimates indicate that pico-sized phytobenthos might contribute a large proportion to the primary production. Benthic ciliates and heterotrophic flagellates contribute about 90% to the estimated combined metabolic rate of micro- and meiobenthic consumers in the whole sea area, with nanoheterotrophs accounting for the majority. The data suggest the potential for the rapid primary and secondary production of microbenthos and detrital utilization in the shallow seafloor sediments of the Yellow Sea. (C) 2011 Elsevier Ltd. All rights reserved.; We investigated the spatial distribution and composition of microbenthos in the seafloor sediments from 48 stations in the Yellow Sea using epifluorescence microscopy and quantitative protargol staining techniques. The bacterial abundance ranged from 2.4 x 10(8) to 1.9 x 10(9) cells cm(-3) in the wet sediment, about three orders of magnitude higher than that of phototrophic (PNFs, from 6.4 x 10(5) to 8.8 x 10(6) cells cm(-3)) and heterotrophic nanoflagellates (HNFs, from 5.8 x 10(4) to 5.9 x 10(6) cells cm(-3)) and four orders of magnitude higher than that of cyanobacteria (from 2.3 x 10(4) to 2.3 x 10(6) cells cm(-3)) in the upper 5 cm of sediments. The abundance of diatoms varied greatly, from 3-1.1 x 10(5) cells cm(-3) in the upper 8 cm of sediments, whereas those of heterotrophic microflagellates (HMFs, 1-182 cells cm(-3)) and ciliates (1-221 cells cm(-3)) were less varied and lower. The biomass partitioning indicates the primary importance of benthic bacteria (503 mu g C cm(-3) on average), followed by PNFs (40.7 mu g C cm(-3)), HNFs (19.3 mu g C cm(-3)), and finally by cyanobacteria (8.8 mu g C cm(-3)). Benthic diatoms (0.8 mu g C cm(-3)), ciliates (0.15 mu g C cm(-3)), and HMFs (0.03 mu g C cm(-3)) contribute relatively small fractions to the total biomass of the microbenthos. About 95% of diatoms, 77% of ciliates, and 56% of HMFs were distributed in the upper 2 cm of sediments, whereas no distinct vertical distributions were observed for bacteria, cyanobacteria, PNFs, and HNFs. The microbenthos are quantitatively important in the shallow seafloor, wherein their main components have an average abundance three orders of magnitude higher than the corresponding planktonic organisms in the same sea area. Our estimates indicate that pico-sized phytobenthos might contribute a large proportion to the primary production. Benthic ciliates and heterotrophic flagellates contribute about 90% to the estimated combined metabolic rate of micro- and meiobenthic consumers in the whole sea area, with nanoheterotrophs accounting for the majority. The data suggest the potential for the rapid primary and secondary production of microbenthos and detrital utilization in the shallow seafloor sediments of the Yellow Sea. (C) 2011 Elsevier Ltd. All rights reserved.
关键词Microbenthos Distribution Abundance Biomass Sediment Yellow Sea
学科领域Oceanography
DOI10.1016/j.csr.2011.06.008
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000295438900005
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/11387
专题海洋生物分类与系统演化实验室
通讯作者Xu, KD (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
第一作者单位中国科学院海洋研究所
推荐引用方式
GB/T 7714
Meng, Zhaocui,Xu, Kuidong,Lei, Yanli,et al. Community composition, distribution, and contribution of microbenthos in offshore sediments from the Yellow Sea[J]. CONTINENTAL SHELF RESEARCH,2011,31(14):1437-1446.
APA Meng, Zhaocui,Xu, Kuidong,Lei, Yanli,&Xu, KD .(2011).Community composition, distribution, and contribution of microbenthos in offshore sediments from the Yellow Sea.CONTINENTAL SHELF RESEARCH,31(14),1437-1446.
MLA Meng, Zhaocui,et al."Community composition, distribution, and contribution of microbenthos in offshore sediments from the Yellow Sea".CONTINENTAL SHELF RESEARCH 31.14(2011):1437-1446.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Community compositio(1079KB)期刊论文出版稿限制开放CC BY-NC-SA浏览
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Meng, Zhaocui]的文章
[Xu, Kuidong]的文章
[Lei, Yanli]的文章
百度学术
百度学术中相似的文章
[Meng, Zhaocui]的文章
[Xu, Kuidong]的文章
[Lei, Yanli]的文章
必应学术
必应学术中相似的文章
[Meng, Zhaocui]的文章
[Xu, Kuidong]的文章
[Lei, Yanli]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Community composition distribution and contribution of microbenthos in offshore sediments from the Yellow Sea.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。