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Regulation of desiccation-immersion cycle on the rate and fate of dissolved organic carbon release by Ulva pertusa

文献类型：期刊论文

作者Wang, Luyao1,2,5; Peng, Chengxiang1,4,5; Liu, Zhengyi1,3; Zhang, Xiaoli1; Xu, Zhaokun6; Liu, Zhiyuan6; Hu, Jinhuan6; Qin, Song1,3; Zhong, Zhihai1,2,3
刊名MARINE ENVIRONMENTAL RESEARCH
出版日期2025-02-01
卷号204页码:11
关键词Macroalgae Dissolved organic carbon Blue carbon Carbon sequestration Ulva pertusa
ISSN号0141-1136
DOI10.1016/j.marenvres.2024.106943
通讯作者Zhong, Zhihai(zhzhong@yic.ac.cn)
英文摘要Macroalgae widely distribute in intertidal zones, one of blue carbon organisms. However, the regulatory mechanisms of tide on the carbon sequestration of macroalgae are still unclear. This study explored the effects of desiccation-rewetting cycles induced by tide on dissolved organic carbon (DOC) release from Ulva pertusa, which is prevalent from high to low tidal zones. Results showed that during desiccation stage, the DOC release of U. pertusa varied with desiccation levels, releasing 0.082, 0.22, and 0.35 mg g- 1 FW at 0%, 40%, and 80% water loss, respectively, DOC accumulated on the surface of U. pertusa at a rate of about 0.52 mg g- 1 FW h- 1. Following 4 h of rewetting, DOC released surges to 0.99, 2.51, and 2.10 mg g- 1 FW h- 1. Using a stable isotope (13C) tracer method, we found that most DOC released by U. pertusa come from early fixed carbon. At 40% water loss, partial DOC stemmed from newly fixed carbon. DOC composition varied with desiccation level, affecting its bioavailability. After 16 days of degradation, DOC concentrations from U. pertusa at 0%, 40%, and 80% desiccation were 1.99, 3.22, and 2.54 mg g- 1 FW, respectively. The 80% water loss showed the highest degradation rate, while the non-water-loss treatment group had the most potential to form refractory DOC. This study underlines the complex relationship between tide and the dynamics of DOC release in U. pertusa, highlighting their role in coastal carbon cycling.
WOS关键词PHYTOPLANKTON ; TEMPERATURE ; SALINITY ; WATER ; PHOTOSYNTHESIS ; MACROALGAE ; STRESS ; MATTER ; GROWTH
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology
语种英语
WOS记录号WOS:001398793800001
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Projects of Science & Technology Plan in Yantai City ; Ocean Negative Carbon Emissions (ONCE) Program, Shandong Provincial Development and Reform Commission,2024 Provincial Key Support Regions urgently needed talents Project
源URL[http://ir.yic.ac.cn/handle/133337/40385]  
专题海岸带生物学与生物资源利用重点实验室
烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
通讯作者Zhong, Zhihai
作者单位1.Chinese Acad Sci, Key Lab Coastal Biol & Biol Resource Utilizat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
4.Dalian Ocean Univ, Coll Marine Sci, Dalian 116000, Peoples R China
5.Chinese Acad Sci, Muping Coastal Environm Res Stn, Yantai 264100, Peoples R China
6.Changdao Lankun Marine Dev Co Ltd, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Luyao,Peng, Chengxiang,Liu, Zhengyi,et al. Regulation of desiccation-immersion cycle on the rate and fate of dissolved organic carbon release by Ulva pertusa[J]. MARINE ENVIRONMENTAL RESEARCH,2025,204:11.
APA Wang, Luyao.,Peng, Chengxiang.,Liu, Zhengyi.,Zhang, Xiaoli.,Xu, Zhaokun.,...&Zhong, Zhihai.(2025).Regulation of desiccation-immersion cycle on the rate and fate of dissolved organic carbon release by Ulva pertusa.MARINE ENVIRONMENTAL RESEARCH,204,11.
MLA Wang, Luyao,et al."Regulation of desiccation-immersion cycle on the rate and fate of dissolved organic carbon release by Ulva pertusa".MARINE ENVIRONMENTAL RESEARCH 204(2025):11.

入库方式： OAI收割

来源：烟台海岸带研究所

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