Bacterial roles in the formation of high-molecular-weight dissolved organic matter in estuarine and coastal waters: Evidence from lipids and the compound-specific isotopic ratios
文献类型：期刊论文
| 作者 | Zou, L; Wang, XC ; Callahan, J; Culp, RA; Chen, RF; Altabet, MA; Sun, MY
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| 刊名 | LIMNOLOGY AND OCEANOGRAPHY
 |
| 出版日期 | 2004 |
| 卷号 | 49期号:1页码:297-302 |
| 关键词 | Marine Environments Stable Carbon Fatty-acids Nitrogen Ocean Particulate Phytoplankton Degradation Indicators Colloids |
| ISSN号 | 0024-3590 |
| 文献子类 | Article |
| 英文摘要 | High-molecular-weight dissolved organic matter (HMW-DOM, > 1,000 Daltons) is actively involved in the global biogeochemical cycling of many elements, but its carbon sources and detailed formation pathways are still not well understood. In this study, we measured bulk stable carbon and nitrogen isotopic ratios, lipid composition, and compound-specific carbon isotopic ratios of HMW-DOM samples collected from four U.S. estuaries (Boston Harbor/Massachusetts Bay, Delaware/Chesapeake Bay, San Diego Bay, and San Francisco Bay). Analytical results show (1) a fraction of HMW-DOM (lipid associated) in estuarine and coastal waters is derived from bacteria and phytoplankton; (2) this fraction of HMW-DOM is formed by various release processes of bacterial membrane components and bacterial reworking of phytoplankton-derived material; (3) this fraction of HMW-DOM is generally present in all samples from different coastal systems despite variable organic matter inputs and environmental conditions, suggesting an important bacterial role in HMW-DOM formation.; High-molecular-weight dissolved organic matter (HMW-DOM, > 1,000 Daltons) is actively involved in the global biogeochemical cycling of many elements, but its carbon sources and detailed formation pathways are still not well understood. In this study, we measured bulk stable carbon and nitrogen isotopic ratios, lipid composition, and compound-specific carbon isotopic ratios of HMW-DOM samples collected from four U.S. estuaries (Boston Harbor/Massachusetts Bay, Delaware/Chesapeake Bay, San Diego Bay, and San Francisco Bay). Analytical results show (1) a fraction of HMW-DOM (lipid associated) in estuarine and coastal waters is derived from bacteria and phytoplankton; (2) this fraction of HMW-DOM is formed by various release processes of bacterial membrane components and bacterial reworking of phytoplankton-derived material; (3) this fraction of HMW-DOM is generally present in all samples from different coastal systems despite variable organic matter inputs and environmental conditions, suggesting an important bacterial role in HMW-DOM formation. |
| 学科主题 | Limnology ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000188381100031 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2767]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 海洋研究所_海洋生物技术研发中心 |
| 作者单位 | 1.Univ Georgia, Dept Marine Sci, Athens, GA 30602 USA 2.Ocean Univ China, Coll Environm Sci & Engn, Qingdao 266003, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266003, Peoples R China 4.Univ Massachusetts, Dept Environm Coastal & Ocean Sci, Boston, MA 02125 USA 5.Univ Massachusetts, Dept Environm Coastal & Ocean Sci, Boston, MA 02125 USA 6.Univ Massachusetts, Sch Marine Sci & Technol, New Bedford, MA USA |
| 推荐引用方式 GB/T 7714 | Zou, L,Wang, XC,Callahan, J,et al. Bacterial roles in the formation of high-molecular-weight dissolved organic matter in estuarine and coastal waters: Evidence from lipids and the compound-specific isotopic ratios[J]. LIMNOLOGY AND OCEANOGRAPHY,2004,49(1):297-302. |
| APA | Zou, L.,Wang, XC.,Callahan, J.,Culp, RA.,Chen, RF.,...&Sun, MY.(2004).Bacterial roles in the formation of high-molecular-weight dissolved organic matter in estuarine and coastal waters: Evidence from lipids and the compound-specific isotopic ratios.LIMNOLOGY AND OCEANOGRAPHY,49(1),297-302. |
| MLA | Zou, L,et al."Bacterial roles in the formation of high-molecular-weight dissolved organic matter in estuarine and coastal waters: Evidence from lipids and the compound-specific isotopic ratios".LIMNOLOGY AND OCEANOGRAPHY 49.1(2004):297-302. |
入库方式： OAI收割
来源：海洋研究所
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