气候变化领域集成服务门户(CCPortal): Changing nutrient cycling in Lake Baikal; the world’s oldest lake

CCPortal

DOI	10.1073/pnas.2013181117
	Changing nutrient cycling in Lake Baikal; the world’s oldest lake
	Swann G.E.A.; Panizzo V.N.; Piccolroaz S.; Pashley V.; Horstwood M.S.A.; Roberts S.; Vologina E.; Piotrowska N.; Sturm M.; Zhdanov A.; Granin N.; Norman C.; McGowan S.; Mackay A.W.
发表日期	2020
ISSN	0027-8424
起始页码	27211
结束页码	27217
卷号	117 期号:44
英文摘要	Lake Baikal, lying in a rift zone in southeastern Siberia, is the world’s oldest, deepest, and most voluminous lake that began to form over 30 million years ago. Cited as the “most outstanding example of a freshwater ecosystem” and designated a World Heritage Site in 1996 due to its high level of endemicity, the lake and its ecosystem have become increasingly threatened by both climate change and anthropogenic disturbance. Here, we present a record of nutrient cycling in the lake, derived from the silicon isotope composition of diatoms, which dominate aquatic primary productivity. Using historical records from the region, we assess the extent to which natural and anthropogenic factors have altered biogeochemical cycling in the lake over the last 2,000 y. We show that rates of nutrient supply from deep waters to the photic zone have dramatically increased since the mid-19th century in response to changing wind dynamics, reduced ice cover, and their associated impact on limnological processes in the lake. With stressors linked to untreated sewage and catchment development also now impacting the near-shore region of Lake Baikal, the resilience of the lake’s highly endemic ecosystem to ongoing and future disturbance is increasingly uncertain. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate; Ecosystem; Endemic; Limnology; Siberia
语种	英语
scopus关键词	ice; lake water; silicon; aquatic environment; Article; biogeochemical cycling; chemical composition; diatom; environmental factor; environmental impact; environmental stress; isotope analysis; lake; lake basin; limnology; nonhuman; nutrient cycling; nutrient supply; priority journal; sewage; wind
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/160745
作者单位	Swann, G.E.A., School of Geography, University of Nottingham, Nottingham, NG7 2RD, United Kingdom; Panizzo, V.N., School of Geography, University of Nottingham, Nottingham, NG7 2RD, United Kingdom; Piccolroaz, S., Physics of Aquatic Systems Laboratory, School of Architecture, Civil and Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, CH-1015, Switzerland; Pashley, V., Geochronology and Tracers Facility, British Geological Survey, Nottingham, NG12 5GG, United Kingdom; Horstwood, M.S.A., Geochronology and Tracers Facility, British Geological Survey, Nottingham, NG12 5GG, United Kingdom; Roberts, S., Canada Centre for Inland Waters, Environment and Climate Change Canada, Burlington, ON L7S 1A1, Canada; Vologina, E., Institute of Earth’s Crust, Siberian Branch, Russian Academy of Sciences, Irkutsk, 664033, Russian Federation; Piotrowska, N., Division of Geochronology and Environmental Isotopes, Institute of Physics–Centre for Science and Education, Silesian University of Technol...
推荐引用方式 GB/T 7714	Swann G.E.A.,Panizzo V.N.,Piccolroaz S.,等. Changing nutrient cycling in Lake Baikal; the world’s oldest lake[J],2020,117(44).
APA	Swann G.E.A..,Panizzo V.N..,Piccolroaz S..,Pashley V..,Horstwood M.S.A..,...&Mackay A.W..(2020).Changing nutrient cycling in Lake Baikal; the world’s oldest lake.Proceedings of the National Academy of Sciences of the United States of America,117(44).
MLA	Swann G.E.A.,et al."Changing nutrient cycling in Lake Baikal; the world’s oldest lake".Proceedings of the National Academy of Sciences of the United States of America 117.44(2020).