Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific
The oxygen minimum zone (OMZ) is an important representative of marine hypoxia in the open ocean, and it is developing rapidly under the context of global warming. However, the research on OMZ in the Western Pacific is still deficient. This study focused on its basic characteristics and impact on th...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/185330 2024-09-15T17:47:31+00:00 Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific Ma, Jun Wen, Lilian Li, Xuegang Dai, Jiajia Song, Jinming Wang, Qidong Xu, Kuidong Yuan, Huamao Duan, Liqin 2024-09-01 http://ir.qdio.ac.cn/handle/337002/185330 https://doi.org/10.1016/j.marenvres.2024.106648 英语 eng ELSEVIER SCI LTD MARINE ENVIRONMENTAL RESEARCH http://ir.qdio.ac.cn/handle/337002/185330 doi:10.1016/j.marenvres.2024.106648 Seawater stratification Seamount Western Pacific Oxygen minimum zone Environmental Sciences & Ecology Marine & Freshwater Biology Toxicology Environmental Sciences DISSOLVED ORGANIC-MATTER TROPICAL WATER MAJOR ROLE OCEAN NITROGEN PHOSPHORUS DYNAMICS BACTERIA CARBON 期刊论文 2024 ftchinacasciocas https://doi.org/10.1016/j.marenvres.2024.106648 2024-08-29T23:34:26Z The oxygen minimum zone (OMZ) is an important representative of marine hypoxia in the open ocean, and it is developing rapidly under the context of global warming. However, the research on OMZ in the Western Pacific is still deficient. This study focused on its basic characteristics and impact on the degradation of particulate matters in the M4 seamount of Western Pacific. The results showed that the OMZ is located at 290-1100 m, just below the high-salinity area and thermocline. The M4 seamount has a weak impact on the OMZ, and only the bottom waters contacting with the seamount have a weak decrease in dissolved oxygen (DO). With the increase of water depth, particulate nitrogen and phosphorus decrease first above and in the OMZ and then increase below the OMZ, while particulate organic carbon (POC) gradually decreases. The low-DO environment in the OMZ is not conducive to the degradation of particulate matters, which promotes the transport of particulate matters to the deep sea, and most particulate matters have the lowest degradation rate here. The waters above the OMZ have the fastest change rate of particulate matters, in which particulate organic phosphorus (POP) and particulate inorganic phosphorus (PIP) are preferentially degraded, and the degradation rate of them is significantly higher than particulate organic nitrogen (PON) and particulate inorganic nitrogen (PIN). The particulate nitrogen and phosphorus in the waters below the OMZ continue to increase, while PON/total particulate nitrogen (TPN) and POP/total particulate phosphorus (TPP) increase significantly, and the increase rate of PIN and PIP is far lower than PON and POP, indicating that the increase of organic matters in particulate matters is more significant. It is speculated that this phenomenon might be related to the input of Antarctic Bottom Water or the in-situ production by microorganisms. This study revealed the relationship between OMZ and different particulate matters, which may provide a valuable pathway for the biogeochemical ... Report Antarc* Antarctic Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Marine Environmental Research 200 106648 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Seawater stratification Seamount Western Pacific Oxygen minimum zone Environmental Sciences & Ecology Marine & Freshwater Biology Toxicology Environmental Sciences DISSOLVED ORGANIC-MATTER TROPICAL WATER MAJOR ROLE OCEAN NITROGEN PHOSPHORUS DYNAMICS BACTERIA CARBON |
spellingShingle |
Seawater stratification Seamount Western Pacific Oxygen minimum zone Environmental Sciences & Ecology Marine & Freshwater Biology Toxicology Environmental Sciences DISSOLVED ORGANIC-MATTER TROPICAL WATER MAJOR ROLE OCEAN NITROGEN PHOSPHORUS DYNAMICS BACTERIA CARBON Ma, Jun Wen, Lilian Li, Xuegang Dai, Jiajia Song, Jinming Wang, Qidong Xu, Kuidong Yuan, Huamao Duan, Liqin Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific |
topic_facet |
Seawater stratification Seamount Western Pacific Oxygen minimum zone Environmental Sciences & Ecology Marine & Freshwater Biology Toxicology Environmental Sciences DISSOLVED ORGANIC-MATTER TROPICAL WATER MAJOR ROLE OCEAN NITROGEN PHOSPHORUS DYNAMICS BACTERIA CARBON |
description |
The oxygen minimum zone (OMZ) is an important representative of marine hypoxia in the open ocean, and it is developing rapidly under the context of global warming. However, the research on OMZ in the Western Pacific is still deficient. This study focused on its basic characteristics and impact on the degradation of particulate matters in the M4 seamount of Western Pacific. The results showed that the OMZ is located at 290-1100 m, just below the high-salinity area and thermocline. The M4 seamount has a weak impact on the OMZ, and only the bottom waters contacting with the seamount have a weak decrease in dissolved oxygen (DO). With the increase of water depth, particulate nitrogen and phosphorus decrease first above and in the OMZ and then increase below the OMZ, while particulate organic carbon (POC) gradually decreases. The low-DO environment in the OMZ is not conducive to the degradation of particulate matters, which promotes the transport of particulate matters to the deep sea, and most particulate matters have the lowest degradation rate here. The waters above the OMZ have the fastest change rate of particulate matters, in which particulate organic phosphorus (POP) and particulate inorganic phosphorus (PIP) are preferentially degraded, and the degradation rate of them is significantly higher than particulate organic nitrogen (PON) and particulate inorganic nitrogen (PIN). The particulate nitrogen and phosphorus in the waters below the OMZ continue to increase, while PON/total particulate nitrogen (TPN) and POP/total particulate phosphorus (TPP) increase significantly, and the increase rate of PIN and PIP is far lower than PON and POP, indicating that the increase of organic matters in particulate matters is more significant. It is speculated that this phenomenon might be related to the input of Antarctic Bottom Water or the in-situ production by microorganisms. This study revealed the relationship between OMZ and different particulate matters, which may provide a valuable pathway for the biogeochemical ... |
format |
Report |
author |
Ma, Jun Wen, Lilian Li, Xuegang Dai, Jiajia Song, Jinming Wang, Qidong Xu, Kuidong Yuan, Huamao Duan, Liqin |
author_facet |
Ma, Jun Wen, Lilian Li, Xuegang Dai, Jiajia Song, Jinming Wang, Qidong Xu, Kuidong Yuan, Huamao Duan, Liqin |
author_sort |
Ma, Jun |
title |
Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific |
title_short |
Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific |
title_full |
Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific |
title_fullStr |
Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific |
title_full_unstemmed |
Different fates of particulate matters driven by marine hypoxia: A case study of oxygen minimum zone in the Western Pacific |
title_sort |
different fates of particulate matters driven by marine hypoxia: a case study of oxygen minimum zone in the western pacific |
publisher |
ELSEVIER SCI LTD |
publishDate |
2024 |
url |
http://ir.qdio.ac.cn/handle/337002/185330 https://doi.org/10.1016/j.marenvres.2024.106648 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
MARINE ENVIRONMENTAL RESEARCH http://ir.qdio.ac.cn/handle/337002/185330 doi:10.1016/j.marenvres.2024.106648 |
op_doi |
https://doi.org/10.1016/j.marenvres.2024.106648 |
container_title |
Marine Environmental Research |
container_volume |
200 |
container_start_page |
106648 |
_version_ |
1810496910930214912 |