气候变化领域集成服务门户(CCPortal): Diatom-mediated food web functioning under ocean artificial upwelling

CCPortal

DOI	10.1038/s41598-024-54345-w
	Diatom-mediated food web functioning under ocean artificial upwelling
	Goldenberg, Silvan Urs; Spisla, Carsten; Sanchez, Nicolas; Taucher, Jan; Spilling, Kristian; Sswat, Michael; Fiesinger, Anna; Fernandez-Mendez, Mar; Krock, Bernd; Hauss, Helena; Haussmann, Jacqueline; Riebesell, Ulf
发表日期	2024
ISSN	2045-2322
起始页码	14
结束页码	1
卷号	14 期号:1
英文摘要	Enhancing ocean productivity by artificial upwelling is evaluated as a nature-based solution for food security and climate change mitigation. Fish production is intended through diatom-based plankton food webs as these are assumed to be short and efficient. However, our findings from mesocosm experiments on artificial upwelling in the oligotrophic ocean disagree with this classical food web model. Here, diatoms did not reduce trophic length and instead impaired the transfer of primary production to crustacean grazers and small pelagic fish. The diatom-driven decrease in trophic efficiency was likely mediated by changes in nutritional value for the copepod grazers. Whilst diatoms benefitted the availability of essential fatty acids, they also caused unfavorable elemental compositions via high carbon-to-nitrogen ratios (i.e. low protein content) to which the grazers were unable to adapt. This nutritional imbalance for grazers was most pronounced in systems optimized for CO2 uptake through carbon-to-nitrogen ratios well beyond Redfield. A simultaneous enhancement of fisheries production and carbon sequestration via artificial upwelling may thus be difficult to achieve given their opposing stoichiometric constraints. Our study suggest that food quality can be more critical than quantity to maximize food web productivity during shorter-term fertilization of the oligotrophic ocean.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001174323600023
来源期刊	SCIENTIFIC REPORTS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/294626
作者单位	Helmholtz Association; GEOMAR Helmholtz Center for Ocean Research Kiel; Finnish Environment Institute; University of Agder; University of Konstanz; Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Norwegian Research Centre (NORCE)
推荐引用方式 GB/T 7714	Goldenberg, Silvan Urs,Spisla, Carsten,Sanchez, Nicolas,et al. Diatom-mediated food web functioning under ocean artificial upwelling[J],2024,14(1).
APA	Goldenberg, Silvan Urs.,Spisla, Carsten.,Sanchez, Nicolas.,Taucher, Jan.,Spilling, Kristian.,...&Riebesell, Ulf.(2024).Diatom-mediated food web functioning under ocean artificial upwelling.SCIENTIFIC REPORTS,14(1).
MLA	Goldenberg, Silvan Urs,et al."Diatom-mediated food web functioning under ocean artificial upwelling".SCIENTIFIC REPORTS 14.1(2024).