Potential overestimation of community respiration in the western Pacific boundary ocean: What causes the putative net heterotrophy in oligotrophic systems?

doi:10.1002/lno.11179

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Potential overestimation of community respiration in the western Pacific boundary ocean: What causes the putative net heterotrophy in oligotrophic systems?
	Huang, Yibin 8,9; Chen, Bingzhang 7; Huang, Bangqin 8,9; Zhou, Hui 1,4,5,6; Yuan, Yongquan2,3,4
刊名	LIMNOLOGY AND OCEANOGRAPHY
	2019-09-01
卷号	64 期号:5 页码:2202-2219
ISSN号	0024-3590
DOI	10.1002/lno.11179
通讯作者	Huang, Bangqin(bqhuang@xmu.edu)
英文摘要	Microbial metabolism is of great importance in affecting the efficiency of biological pump and global carbon cycles. However, the metabolic state of the oligotrophic ocean, the largest biome on Earth, remains contentious. We examined the planktonic and bacterial metabolism using in vitro incubations along the western Pacific boundary during September and October 2016. The integrated gross primary production (GPP) of the photic zone exhibited higher values in the region of 2 degrees-8 degrees N along 130 degrees E and the western Luzon Strait, which is consistent with the regional variability of nutrients in the different ocean provinces. Spatially, the community respiration (CR) was less variable than the GPP and slightly exceeded the GPP at most of the sampling stations. Overall, the in vitro incubation results suggest a prevailing heterotrophic state in this region. A comparison of the metabolic rates from the in vitro incubations with recently published biogeochemical model results in the same region shows that our observed GPP values were close to those predicted by the model, but the measured CR was approximately 30% higher than the modeled values. We also found that most of the in vitro CR estimates were higher than the upper range of the empirical CR estimated from the sum of the contributions of the main trophic groups. Conversely, the estimates of the empirical CR support the rationality of the CR predicted by the biogeochemical model. In general, the results indicate that systematic net heterotrophy is more likely a result of the overestimation of CR measured by the light-dark bottle incubation experiments, although the exact cause of the methodological problem remains unknown.
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	WILEY
WOS记录号	WOS:000485001400026
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/162807]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Huang, Bangqin
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Shandong, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China 5.Pilot Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China 6.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China 7.Univ Strathclyde, Dept Math & Stat, Glasgow, Lanark, Scotland 8.Xiamen Univ, Fujian Prov Key Lab Coastal Ecol & Environm Studi, Xiamen, Fujian, Peoples R China 9.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yibin,Chen, Bingzhang,Huang, Bangqin,et al. Potential overestimation of community respiration in the western Pacific boundary ocean: What causes the putative net heterotrophy in oligotrophic systems?[J]. LIMNOLOGY AND OCEANOGRAPHY,2019,64(5):2202-2219.
APA	Huang, Yibin,Chen, Bingzhang,Huang, Bangqin,Zhou, Hui,&Yuan, Yongquan.(2019).Potential overestimation of community respiration in the western Pacific boundary ocean: What causes the putative net heterotrophy in oligotrophic systems?.LIMNOLOGY AND OCEANOGRAPHY,64(5),2202-2219.
MLA	Huang, Yibin,et al."Potential overestimation of community respiration in the western Pacific boundary ocean: What causes the putative net heterotrophy in oligotrophic systems?".LIMNOLOGY AND OCEANOGRAPHY 64.5(2019):2202-2219.