气候变化领域集成服务门户(CCPortal): Coastal eutrophication drives acidification, oxygen loss, and ecosystem change in a major oceanic upwelling system

CCPortal

DOI	10.1073/pnas.2018856118
	Coastal eutrophication drives acidification, oxygen loss, and ecosystem change in a major oceanic upwelling system
	Kessouri F.; McWilliams J.C.; Bianchi D.; Sutula M.; Renault L.; Deutsch C.; Feely R.A.; McLaughlin K.; Ho M.; Howard E.M.; Bednaršek N.; Damien P.; Molemaker J.; Weisberg S.B.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:21
英文摘要	Global change is leading to warming, acidification, and oxygen loss in the ocean. In the Southern California Bight, an eastern boundary upwelling system, these stressors are exacerbated by the localized discharge of anthropogenically enhanced nutrients from a coastal population of 23 million people. Here, we use simulations with a high-resolution, physical–biogeochemical model to quantify the link between terrestrial and atmospheric nutrients, organic matter, and carbon inputs and biogeochemical change in the coastal waters of the Southern California Bight. The model is forced by large-scale climatic drivers and a reconstruction of local inputs via rivers, wastewater outfalls, and atmospheric deposition; it captures the fine scales of ocean circulation along the shelf; and it is validated against a large collection of physical and biogeochemical observations. Local land-based and atmospheric inputs, enhanced by anthropogenic sources, drive a 79% increase in phytoplankton biomass, a 23% increase in primary production, and a nearly 44% increase in subsurface respiration rates along the coast in summer, reshaping the biogeochemistry of the Southern California Bight. Seasonal reductions in subsurface oxygen, pH, and aragonite saturation state, by up to 50 mmol m−3, 0.09, and 0.47, respectively, rival or exceed the global open-ocean oxygen loss and acidification since the preindustrial period. The biological effects of these changes on local fisheries, proliferation of harmful algal blooms, water clarity, and submerged aquatic vegetation have yet to be fully explored. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Acidification and oxygen loss; Coastal eutrophication; Human impacts; Marine habitats; Southern California upwelling ecosystem
语种	英语
scopus关键词	calcium carbonate; organic matter; algal bloom; Article; atmospheric deposition; biogeochemistry; California; carbon cycle; carbon footprint; climate change; coastal waters; eutrophication; fishery; nitrogen cycle; ocean acidification; ocean circulation; photosynthesis; primary production (biomass); priority journal; seasonal variation; seawater upwelling; wastewater; water quality
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238556
作者单位	Department of Biogeochemistry, Southern California Coastal Water Research Project, Costa Mesa, CA 92626, United States; Department of Atmospheric and Oceanic Sciences, University of California Los Angeles, Los Angeles, CA 90095, United States; Laboratoire d’Études en Géophysique et Océanographie Spatiale, Institut de Recherche et de Developpement, CNRS, Université Paul Sabatier, Toulouse, 31400, France; School of Oceanography, University of Washington, Seattle, WA 98195, United States; Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, Seattle, WA 98115, United States; National Institute of Biology, Marine Biological Station Piran, Piran, 6330, Slovenia
推荐引用方式 GB/T 7714	Kessouri F.,McWilliams J.C.,Bianchi D.,et al. Coastal eutrophication drives acidification, oxygen loss, and ecosystem change in a major oceanic upwelling system[J],2021,118(21).
APA	Kessouri F..,McWilliams J.C..,Bianchi D..,Sutula M..,Renault L..,...&Weisberg S.B..(2021).Coastal eutrophication drives acidification, oxygen loss, and ecosystem change in a major oceanic upwelling system.Proceedings of the National Academy of Sciences of the United States of America,118(21).
MLA	Kessouri F.,et al."Coastal eutrophication drives acidification, oxygen loss, and ecosystem change in a major oceanic upwelling system".Proceedings of the National Academy of Sciences of the United States of America 118.21(2021).