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Tytuł:
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Greenhouse gases and biogeochemical diel fluctuations in a high-altitude wetland.
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Autorzy:
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Molina V; Departamento de Biología, Observatorio de Ecología Microbiana, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha, Avenida Leopoldo Carvallo 270, Playa Ancha, Valparaíso 2340000, Chile; HUB Ambiental UPLA, Universidad de Playa Ancha, Avenida Leopoldo Carvallo 200, Playa Ancha, Valparaíso 2340000, Chile. Electronic address: .
Eissler Y; Instituto de Química y Bioquímica, Facultad de Ciencias, Universidad de Valparaíso, Gran Bretaña 1111, Playa Ancha, Valparaíso 2360102, Chile. Electronic address: .
Fernandez C; Sorbonne Universités, UPMC Univ Paris 06, CNRS, Laboratoire d'Océanographie Microbienne (LOMIC), Observatoire Océanologique, de Banyuls sur Mer, F-6665 Banyuls/mer, France; Interdisciplinary Center for Aquaculture Research (INCAR), PIA CONICYT COPAS SUR-AUSTRAL Program, Barrio Universitario s/n, Universidad de Concepción, Concepción 4030000, Chile; Centro Fondap IDEAL, Universidad Austral de Chile, Independencia 631, Valdivia 5110566, Chile. Electronic address: .
Cornejo-D'Ottone M; Escuela de Ciencias del Mar e Instituto Milenio de Oceanografía, Pontificia Universidad Católica de Valparaíso, Altamirano 1480, Valparaíso 2360007, Chile. Electronic address: .
Dorador C; Laboratorio de Complejidad Microbiana y Ecología Funcional, Instituto de Antofagasta, Departamento de Biotecnología, Facultad de Ciencias del Mar y Recursos Biológicos, Universidad de Antofagasta, Avenida Universidad de Antofagasta s/n, Antofagasta 1240000, Chile; Centre for Biotechnology and Bioengineering, Santiago 8320000, Chile. Electronic address: .
Bebout BM; Exobiology Branch, Ames Research Center National Aeronautics and Space Administration, Moffett Field, CA 94035-0001, USA. Electronic address: .
Jeffrey WH; Center for Environmental Diagnostics and Bioremediation, University of West Florida, Pensacola, FL 32514, USA. Electronic address: .
Romero C; Laboratorio de Teledetección Ambiental, Departamento de Ciencias Geográficas, Facultad de Ciencias Naturales y Exactas, Universidad de Playa Ancha. Avenida Leopoldo Carvallo 270, Playa Ancha, Valparaíso 2340000, Chile. Electronic address: .
Hengst M; Centre for Biotechnology and Bioengineering, Santiago 8320000, Chile; Departamento de Ciencias Farmacéuticas, Facultad de Ciencias, Universidad Católica del Norte. Av Angamos 0610, Antofagasta 1270709, Chile. Electronic address: .
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Źródło:
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The Science of the total environment [Sci Total Environ] 2021 May 10; Vol. 768, pp. 144370. Date of Electronic Publication: 2020 Dec 30.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Amsterdam, Elsevier.
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MeSH Terms:
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Greenhouse Gases*/analysis
Altitude ; Archaea ; Bacteria ; Methane/analysis ; Wetlands
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Contributed Indexing:
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Keywords: Archaea; Bacteria; C and N biogeochemical cycles; Diel dynamics; Greenhouse gases; High-altitude wetland; Microbial diversity
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Substance Nomenclature:
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0 (Greenhouse Gases)
OP0UW79H66 (Methane)
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Entry Date(s):
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Date Created: 20210117 Date Completed: 20210311 Latest Revision: 20210311
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Update Code:
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20240105
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DOI:
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10.1016/j.scitotenv.2020.144370
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PMID:
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33454466
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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 N 2 O accumulation. CH 4 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 CO 2 and N 2 O, 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.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
