干旱区生态环境知识资源中心(Arid): High Net Primary Production of Mediterranean Seagrass (Posidonia oceanica) Meadows Determined With Aquatic Eddy Covariance

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DOI	10.3389/fmars.2020.00118
	High Net Primary Production of Mediterranean Seagrass (Posidonia oceanica) Meadows Determined With Aquatic Eddy Covariance
	Koopmans, Dirk 1; Holtappels, Moritz 2; Chennu, Arjun 1; Weber, Miriam 3,4; de Beer, Dirk 1
通讯作者	Koopmans, Dirk
来源期刊	FRONTIERS IN MARINE SCIENCE
EISSN	2296-7745
出版年	2020
卷号	7
英文摘要	We report primary production and respiration of Posidonia oceanica meadows determined with the non-invasive aquatic eddy covariance technique. Oxygen fluxes were measured in late spring at an open-water meadow (300 m from shore), at a nearshore meadow (60 m from shore), and at an adjacent sand bed. Despite the oligotrophic environment, the meadows were highly productive and highly autotrophic. Net ecosystem production (54 to 119 mmol m(-2) d(-1)) was about one-half of gross primary production. In adjacent sands, net primary production was a tenth- to a twentieth smaller (4.6 mmol m(-2) d(-1)). Thus, P. oceanica meadows are an oasis of productivity in unproductive surroundings. During the night, dissolved oxygen was depleted in the open-water meadow. This caused a hysteresis where oxygen production in the late afternoon was greater than in the morning at the same irradiance. Therefore, for accurate measurements of diel primary production and respiration in this system, oxygen must be measured within the canopy. Generally, these measurements demonstrate that P. oceanica meadows fix substantially more organic carbon than they respire. This supports the high rate of organic carbon accumulation and export for which the ecosystem is known.
英文关键词	seagrass Posidonia oceanica Mediterranean respiration primary production eddy covariance oxygen flux photosynthesis
类型	Article
语种	英语
国家	Germany ; Italy
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000518844800001
WOS关键词	ECOSYSTEM METABOLISM ; THALASSIA-TESTUDINUM ; NUTRIENT LIMITATION ; SEDIMENT NUTRIENTS ; BENTHIC EXCHANGE ; GROWTH DYNAMICS ; ORGANIC-MATTER ; OXYGEN FLUXES ; PHOTOSYNTHESIS ; CARBON
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314548
作者单位	1.Max Planck Inst Marine Microbiol, Bremen, Germany; 2.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Bremerhaven, Germany; 3.HYDRA Marine Sci GmbH, Sinzheim, Germany; 4.HYDRA, Elba Field Stn, Campo Nellelba, Italy
推荐引用方式 GB/T 7714	Koopmans, Dirk,Holtappels, Moritz,Chennu, Arjun,et al. High Net Primary Production of Mediterranean Seagrass (Posidonia oceanica) Meadows Determined With Aquatic Eddy Covariance[J],2020,7.
APA	Koopmans, Dirk,Holtappels, Moritz,Chennu, Arjun,Weber, Miriam,&de Beer, Dirk.(2020).High Net Primary Production of Mediterranean Seagrass (Posidonia oceanica) Meadows Determined With Aquatic Eddy Covariance.FRONTIERS IN MARINE SCIENCE,7.
MLA	Koopmans, Dirk,et al."High Net Primary Production of Mediterranean Seagrass (Posidonia oceanica) Meadows Determined With Aquatic Eddy Covariance".FRONTIERS IN MARINE SCIENCE 7(2020).