Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia
Tropical peatlands are globally important carbon reservoirs that play a crucial role in fluxes of atmospheric greenhouse gases. Amazon peatlands are expected to be large source of atmospheric methane (CH4) emissions, however little is understood about the rates of CH4 flux or the microorganisms that...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2020-04-01
|
| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/article/10.3389/fmicb.2020.00746/full |
| _version_ | 1818155509007515648 |
|---|---|
| author | Damien Robert Finn Michal Ziv-El Michal Ziv-El Joost van Haren Jin Gyoon Park Jhon del Aguila-Pasquel Jose David Urquiza–Muñoz Hinsby Cadillo-Quiroz Hinsby Cadillo-Quiroz Hinsby Cadillo-Quiroz |
| author_facet | Damien Robert Finn Michal Ziv-El Michal Ziv-El Joost van Haren Jin Gyoon Park Jhon del Aguila-Pasquel Jose David Urquiza–Muñoz Hinsby Cadillo-Quiroz Hinsby Cadillo-Quiroz Hinsby Cadillo-Quiroz |
| author_sort | Damien Robert Finn |
| collection | DOAJ |
| description | Tropical peatlands are globally important carbon reservoirs that play a crucial role in fluxes of atmospheric greenhouse gases. Amazon peatlands are expected to be large source of atmospheric methane (CH4) emissions, however little is understood about the rates of CH4 flux or the microorganisms that mediate it in these environments. Here we studied a mineral nutrient gradient across peatlands in the Pastaza-Marañón Basin, the largest tropical peatland in South America, to describe CH4 fluxes and environmental factors that regulate species assemblages of methanogenic and methanotrophic microorganisms. Peatlands were grouped as minerotrophic, mixed and ombrotrophic categories by their general water source leading to different mineral nutrient content (rich, mixed and poor) quantified by trace elements abundance. Microbial communities clustered dependent on nutrient content (ANOSIM p < 0.001). Higher CH4 flux was associated with minerotrophic communities compared to the other categories. The most dominant methanogens and methanotrophs were represented by Methanobacteriaceae, and Methylocystaceae, respectively. Weighted network analysis demonstrated tight clustering of most methanogen families with minerotrophic-associated microbial families. Populations of Methylocystaceae were present across all peatlands. Null model testing for species assemblage patterns and species rank distributions confirmed non-random aggregations of Methylococcacae methanotroph and methanogen families (p < 0.05). We conclude that in studied amazon peatlands increasing mineral nutrient content provides favorable habitats for Methanobacteriaceae, while Methylocystaceae populations seem to broadly distribute independent of nutrient content. |
| first_indexed | 2024-12-11T14:43:32Z |
| format | Article |
| id | doaj.art-1562c66b300246fc8481f8656ae89349 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-11T14:43:32Z |
| publishDate | 2020-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-1562c66b300246fc8481f8656ae893492022-12-22T01:01:47ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2020-04-011110.3389/fmicb.2020.00746510808Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian AmazoniaDamien Robert Finn0Michal Ziv-El1Michal Ziv-El2Joost van Haren3Jin Gyoon Park4Jhon del Aguila-Pasquel5Jose David Urquiza–Muñoz6Hinsby Cadillo-Quiroz7Hinsby Cadillo-Quiroz8Hinsby Cadillo-Quiroz9School of Life Sciences, Arizona State University, Tempe, AZ, United StatesSchool of Life Sciences, Arizona State University, Tempe, AZ, United StatesSwette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, Tempe, AZ, United StatesBiosphere 2, University of Arizona, Tucson, AZ, United StatesCenter for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, United StatesInstituto de Investigaciones de la Amazonia Peruana, Iquitos, PeruLaboratorio de Suelos del Centro de Investigaciones de Recursos Naturales de la Amazonia Peruana, and Facultad de Ciencias Forestales, Universidad de la Amazonia Peruana, Iquitos, PeruSchool of Life Sciences, Arizona State University, Tempe, AZ, United StatesSwette Center for Environmental Biotechnology, Biodesign Institute, Arizona State University, Tempe, AZ, United StatesCenter for Fundamental and Applied Microbiomics, Biodesign Institute, Arizona State University, Tempe, AZ, United StatesTropical peatlands are globally important carbon reservoirs that play a crucial role in fluxes of atmospheric greenhouse gases. Amazon peatlands are expected to be large source of atmospheric methane (CH4) emissions, however little is understood about the rates of CH4 flux or the microorganisms that mediate it in these environments. Here we studied a mineral nutrient gradient across peatlands in the Pastaza-Marañón Basin, the largest tropical peatland in South America, to describe CH4 fluxes and environmental factors that regulate species assemblages of methanogenic and methanotrophic microorganisms. Peatlands were grouped as minerotrophic, mixed and ombrotrophic categories by their general water source leading to different mineral nutrient content (rich, mixed and poor) quantified by trace elements abundance. Microbial communities clustered dependent on nutrient content (ANOSIM p < 0.001). Higher CH4 flux was associated with minerotrophic communities compared to the other categories. The most dominant methanogens and methanotrophs were represented by Methanobacteriaceae, and Methylocystaceae, respectively. Weighted network analysis demonstrated tight clustering of most methanogen families with minerotrophic-associated microbial families. Populations of Methylocystaceae were present across all peatlands. Null model testing for species assemblage patterns and species rank distributions confirmed non-random aggregations of Methylococcacae methanotroph and methanogen families (p < 0.05). We conclude that in studied amazon peatlands increasing mineral nutrient content provides favorable habitats for Methanobacteriaceae, while Methylocystaceae populations seem to broadly distribute independent of nutrient content.https://www.frontiersin.org/article/10.3389/fmicb.2020.00746/fullgreenhouse gasesmethanepeatlandsamazonmethanogensmethanotrophs |
| spellingShingle | Damien Robert Finn Michal Ziv-El Michal Ziv-El Joost van Haren Jin Gyoon Park Jhon del Aguila-Pasquel Jose David Urquiza–Muñoz Hinsby Cadillo-Quiroz Hinsby Cadillo-Quiroz Hinsby Cadillo-Quiroz Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia Frontiers in Microbiology greenhouse gases methane peatlands amazon methanogens methanotrophs |
| title | Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia |
| title_full | Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia |
| title_fullStr | Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia |
| title_full_unstemmed | Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia |
| title_short | Methanogens and Methanotrophs Show Nutrient-Dependent Community Assemblage Patterns Across Tropical Peatlands of the Pastaza-Marañón Basin, Peruvian Amazonia |
| title_sort | methanogens and methanotrophs show nutrient dependent community assemblage patterns across tropical peatlands of the pastaza maranon basin peruvian amazonia |
| topic | greenhouse gases methane peatlands amazon methanogens methanotrophs |
| url | https://www.frontiersin.org/article/10.3389/fmicb.2020.00746/full |
| work_keys_str_mv | AT damienrobertfinn methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT michalzivel methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT michalzivel methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT joostvanharen methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT jingyoonpark methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT jhondelaguilapasquel methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT josedavidurquizamunoz methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT hinsbycadilloquiroz methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT hinsbycadilloquiroz methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia AT hinsbycadilloquiroz methanogensandmethanotrophsshownutrientdependentcommunityassemblagepatternsacrosstropicalpeatlandsofthepastazamaranonbasinperuvianamazonia |