干旱区生态环境知识资源中心(Arid): Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland

Arid

DOI	10.1016/j.scitotenv.2020.144370
	Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland
	Molina, Veronica; Eissler, Yoanna; Fernandez, Camila; Cornejo-D'Ottone, Marcela; Dorador, Cristina; Bebout, Brad M.; Jeffrey, Wade H.; Romero, Carlos; Hengst, Martha
通讯作者	Eissler, Y (corresponding author), Univ Valparaiso, Fac Ciencias, Inst Quim & Bioquim, Gran Bretana 1111, Valparaiso 2360102, Chile.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	768
英文摘要	The landscapes of high-altitude wetland ecosystems are characterized by different kinds of aquatic sites, including ponds holding conspicuous microbial life. Here, we examined a representative pond of the wetland landscape for dynamics of greenhouse gases, and their association with other relevant biogeochemical conditions including diel shifts of microbial communities' structure and activity over two consecutive days. Satellite image analysis indicates that the area of ponds cover 238 of 381.3 Ha (i.e., 62.4%), representing a significant landscape in this wetland. Solar radiation, wind velocity and temperature varied daily and between the days sampled, influencing the biogeochemical dynamics in the pond, shifting the pond reservoir of inorganic versus dissolved organic nitrogen/ phosphorus bioavailability, between day 1 and day 2. Day 2 was characterized by high dissolved organic nitrogen/phosphorus and N2O accumulation. CH4 presented a positive excess showing maxima at hours of high radiation during both days. The microbial community in the sediment was diverse and enriched in keystone active groups potentially related with GHG recycling including bacteria and archaea, such as Cyanobacteria, Verrucomicrobia, Rhodobacterales and Nanoarchaeaota (Woesearchaeia). Archaea account for the microbial community composition changes between both days and for the secondary productivity in the water measured during day 2. The results indicate that an intense recycling of organic matter occurs in the pond systems and that the activity of the microbial community is correlated with the availability of nutrients. Together, the above results indicate a net sink of CO2 and N2O, which has also been reported for other natural and artificial ponds. Overall, our two-day fluctuation study in a representative pond of a high-altitude wetland aquatic landscape indicates the need to explore in more detail the short-term besides the long-term biogeochemical variability in arid ecosystems of the Andes plateau, where wetlands are hotspots of life currently under high anthropogenic pressure. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Greenhouse gases Diet dynamics Bacteria Archaea High-altitude wetland Microbial diversity C and N biogeochemical cycles
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000625384700024
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368779
作者单位	[Molina, Veronica] Univ Playa Ancha, Fac Ciencias Nat & Exactas, Dept Biol, Observ Ecol Microbiana, Ave Leopoldo Carvallo 270, Valparaiso 2340000, Chile; [Molina, Veronica] Univ Playa Ancha, HUB Ambient UPLA, Ave Leopoldo Carvallo 200, Valparaiso 2340000, Chile; [Eissler, Yoanna] Univ Valparaiso, Fac Ciencias, Inst Quim & Bioquim, Gran Bretana 1111, Valparaiso 2360102, Chile; [Fernandez, Camila] UPMC Univ Paris 06, Observ Oceanol, Lab Oceanog Microbienne LOMIC, Sorbonne Univ,CNRS, F-6665 De Banyuls Sur Mer, Banyuls Mer, France; [Fernandez, Camila] Univ Concepcion, Interdisciplinary Ctr Aquaculture Res INCAR, PIA CONICYT COPAS SUR AUSTRAL Program, Barrio Univ S-N, Concepcion 4030000, Chile; [Fernandez, Camila] Univ Austral Chile, Ctr Fondap IDEAL, Independencia 631, Valdivia 5110566, Chile; [Cornejo-D'Ottone, Marcela] Pontificia Univ Catolica Valparaiso, Escuela Ciencias Mar, Altamirano 1480, Valparaiso 2360007, Chile; [Cornejo-D'Ottone, Marcela] Pontificia Univ Catolica Valparaiso, Inst Milenio Oceanog, A...
推荐引用方式 GB/T 7714	Molina, Veronica,Eissler, Yoanna,Fernandez, Camila,et al. Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland[J],2021,768.
APA	Molina, Veronica.,Eissler, Yoanna.,Fernandez, Camila.,Cornejo-D'Ottone, Marcela.,Dorador, Cristina.,...&Hengst, Martha.(2021).Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland.SCIENCE OF THE TOTAL ENVIRONMENT,768.
MLA	Molina, Veronica,et al."Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland".SCIENCE OF THE TOTAL ENVIRONMENT 768(2021).