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Title: Community structure – Ecosystem function relationships in the Congo Basin methane cycle depend on the physiological scale of function

Journal Article · · Molecular Ecology
DOI:https://doi.org/10.1111/mec.15442· OSTI ID:1801803

Abstract Belowground ecosystem processes can be highly variable and difficult to predict using microbial community data. Here, we argue that this stems from at least three issues: (a) complex covariance structure of samples (with environmental conditions or spatial proximity) can make distinguishing biotic drivers a challenge; (b) communities can control ecosystem processes through multiple mechanisms, making the identification of these controls a challenge; and (c) ecosystem function assessments can be broad in physiological scale, encapsulating multiple processes with unique microbially mediated controls. We test these assertions using methane (CH 4 )‐cycling processes in soil samples collected along a wetland‐to‐upland habitat gradient in the Congo Basin. We perform our measurements of function under controlled laboratory conditions and statistically control for environmental covariates to aid in identifying biotic drivers. We divide measurements of microbial communities into four attributes (abundance, activity, composition, and diversity) that represent different forms of community control. Lastly, our process measurements differ in physiological scale, including broader processes (gross methanogenesis and methanotrophy) that involve more mediating groups, to finer processes (hydrogenotrophic methanogenesis and high‐affinity CH 4 oxidation) with fewer mediating groups. We observed that finer scale processes can be more readily predicted from microbial community structure than broader scale processes. In addition, the nature of those relationships differed, with broad processes limited by abundance while fine‐scale processes were associated with diversity and composition. These findings demonstrate the importance of carefully defining the physiological scale of ecosystem function and performing community measurements that represent the range of possible controls on ecosystem processes.

Research Organization:
Univ. of Oregon, Eugene, OR (United States)
Sponsoring Organization:
Gabon-Oregon Transnational Center on Environment and Development; Smithsonian Conservation Biology Institute; Shell Gabon; National Science Foundation (NSF); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
SC0008092; SC0012088; DEB 14422214; 14422214; DE‐SC0008092; DE‐39SC0012088
OSTI ID:
1801803
Alternate ID(s):
OSTI ID: 1630762
Journal Information:
Molecular Ecology, Vol. 29, Issue 10; ISSN 0962-1083
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (87)

Atmospheric methane budget in Africa journal April 1992
Quality control and preprocessing of metagenomic datasets journal January 2011
ggplot2 book January 2009
Upland Soil Cluster Gamma dominates methanotrophic communities in upland grassland soils journal June 2019
Biodiversity and stability in grasslands journal January 1994
Do we need to understand microbial communities to predict ecosystem function? A comparison of statistical models of nitrogen cycling processes journal January 2014
The Guineo-Congolian Region and Its Relationships to Other Phytochoria
  • White, F.
  • Bulletin du Jardin botanique national de Belgique / Bulletin van de National Plantentuin van België, Vol. 49, Issue 1/2 https://doi.org/10.2307/3667815
journal June 1979
Evidence that participate methane monooxygenase and ammonia monooxygenase may be evolutionarily related journal October 1995
Development of a Dual-Index Sequencing Strategy and Curation Pipeline for Analyzing Amplicon Sequence Data on the MiSeq Illumina Sequencing Platform journal June 2013
The effect of termite biomass and anthropogenic disturbance on the CH4 budgets of tropical forests in Cameroon and Borneo journal December 1999
Simulated rRNA/DNA Ratios Show Potential To Misclassify Active Populations as Dormant journal March 2017
Productivity and sustainability influenced by biodiversity in grassland ecosystems journal February 1996
Comparison of pmoA PCR Primer Sets as Tools for Investigating Methanotroph Diversity in Three Danish Soils journal September 2001
Responses of Methanogen mcrA Genes and Their Transcripts to an Alternate Dry/Wet Cycle of Paddy Field Soil journal November 2011
Active and total microbial communities in forest soil are largely different and highly stratified during decomposition journal July 2011
Phylogenetic Comparison of the Methanogenic Communities from an Acidic, Oligotrophic Fen and an Anaerobic Digester Treating Municipal Wastewater Sludge journal September 2008
Naive Bayesian Classifier for Rapid Assignment of rRNA Sequences into the New Bacterial Taxonomy journal June 2007
Global patterns of 16S rRNA diversity at a depth of millions of sequences per sample journal June 2010
Pathways of anaerobic carbon cycling across an ombrotrophic-minerotrophic peatland gradient journal January 2007
Molecular biology and biochemistry of ammonia oxidation by Nitrosomonas europaea journal October 2002
A Single Community Dominates Structure and Function of a Mixture of Multiple Methanogenic Communities journal November 2017
Belowground biodiversity and ecosystem functioning journal November 2014
Phylogenetic conservatism of functional traits in microorganisms journal December 2012
Descriptions of Roseiarcus fermentans gen. nov., sp. nov., a bacteriochlorophyll a-containing fermentative bacterium related phylogenetically to alphaproteobacterial methanotrophs, and of the family Roseiarcaceae fam. nov. journal May 2014
Diversity and Habitat Preferences of Cultivated and Uncultivated Aerobic Methanotrophic Bacteria Evaluated Based on pmoA as Molecular Marker journal December 2015
Distribution, Activities, and Interactions of Methanogens and Sulfate-Reducing Prokaryotes in the Florida Everglades journal August 2015
Ribosomal Database Project: data and tools for high throughput rRNA analysis journal November 2013
Methane oxidation in temperate soils: effects of inorganic N journal December 2004
Amplification efficiency: linking baseline and bias in the analysis of quantitative PCR data journal February 2009
Evidence of Microbial Regulation of Biogeochemical Cycles from a Study on Methane Flux and Land Use Change journal April 2013
Methane emission from flooded forest in central Africa journal January 1992
Taxonomic, Phylogenetic, and Ecological Diversity of Methanogenic Archaea journal August 2000
Integrating community assembly and biodiversity to better understand ecosystem function: the Community Assembly and the Functioning of Ecosystems ( CAFE ) approach journal February 2018
The coupling of taxonomy and function in microbiomes journal November 2017
Testing the functional significance of microbial community composition journal February 2009
Microbial community structure and global trace gases journal October 1998
Identification of active methanotrophs in a landfill cover soil through detection of expression of 16S rRNA and functional genes journal November 2007
Widespread soil bacterium that oxidizes atmospheric methane journal April 2019
Function and functional redundancy in microbial systems journal April 2018
Methane oxidation activity in various soils and freshwater sediments: Occurrence, characteristics, vertical profiles, and distribution on grain size fractions journal January 1994
Carbon, Nitrogen, and Phosphorus Mineralization in Northern Wetlands journal July 1998
Organic Matter Mineralization and Decomposition book October 2015
Assumption-free analysis of quantitative real-time polymerase chain reaction (PCR) data journal March 2003
Linking microbial community structure and microbial processes: an empirical and conceptual overview journal September 2015
Wide diversity of methane and short-chain alkane metabolisms in uncultured archaea journal March 2019
Three decades of global methane sources and sinks journal September 2013
Correlation of Methane Production and Functional Gene Transcriptional Activity in a Peat Soil journal September 2009
Links between methane flux and transcriptional activities of methanogens and methane oxidizers in a blanket peat bog: Methane flux and transcriptional activities in a peat bog journal March 2010
Biodiversity increases the resistance of ecosystem productivity to climate extremes journal October 2015
Contribution of hydrogen to methane production and control of hydrogen concentrations in methanogenic soils and sediments journal March 1999
Activity profiles for marine sponge-associated bacteria obtained by 16S rRNA vs 16S rRNA gene comparisons journal January 2010
Unravelling the Identity, Metabolic Potential and Global Biogeography of the Atmospheric Methane-Oxidizing Upland Soil Cluster α: Illuminating the USCα methanotrophs from soil journal January 2018
Microbial minorities modulate methane consumption through niche partitioning journal June 2013
QIIME allows analysis of high-throughput community sequencing data journal April 2010
The quest for atmospheric methane oxidizers in forest soils: Atmospheric methane-oxidizing methanotrophs in forest soils journal July 2009
Biodiversity-function relationships in methanogenic communities journal November 2018
Conceptualizing functional traits and ecological characteristics of methane-oxidizing bacteria as life strategies: Functional traits of methane-oxidizing bacteria journal August 2012
Microbial seed banks: the ecological and evolutionary implications of dormancy journal January 2011
PEAR: a fast and accurate Illumina Paired-End reAd mergeR journal October 2013
Methane emissions from wetlands: biogeochemical, microbial, and modeling perspectives from local to global scales journal February 2013
Relationships between protein-encoding gene abundance and corresponding process are commonly assumed yet rarely observed journal December 2014
Environmental and Substrate Controls over Carbon and Nitrogen Mineralization in Northern Wetlands journal February 1995
Spatial Autocorrelation: Trouble or New Paradigm? journal September 1993
Positive diversity-functioning relationships in model communities of methanotrophic bacteria journal February 2018
Microbial rRNA Synthesis and Growth Compared through Quantitative Stable Isotope Probing with H 2 18 O journal February 2018
Stimulation by ammonium-based fertilizers of methane oxidation in soil around rice roots journal January 2000
Methane dynamics regulated by microbial community response to permafrost thaw journal October 2014
Extraction of mRNA from Soil journal July 2010
Tropical wetlands: A missing link in the global carbon cycle?: Carbon cycling in tropical wetlands journal December 2014
Kinetics of CH4 oxidation in oxic soils exposed to ambient air or high CH4 mixing ratios journal October 1992
Substrate sources regulate spatial variation of metabolically active methanogens from two contrasting freshwater wetlands journal August 2015
Biodiversity and Ecosystem Functioning: Current Knowledge and Future Challenges journal October 2001
Quantitative stable isotope probing with H218O reveals that most bacterial taxa in soil synthesize new ribosomal RNA journal July 2018
Microbial diversity drives multifunctionality in terrestrial ecosystems journal January 2016
Sources and sinks of methane and carbon dioxide exchanges in mountain forest in equatorial Africa journal January 1992
Dormancy contributes to the maintenance of microbial diversity journal March 2010
Higher biodiversity is required to sustain multiple ecosystem processes across temperature regimes journal August 2014
A tale of two methane monooxygenases journal November 2016
The unseen majority: soil microbes as drivers of plant diversity and productivity in terrestrial ecosystems journal March 2008
Methane, microbes and models: fundamental understanding of the soil methane cycle for future predictions: Methane, microbes and models journal May 2013
Varying atmospheric methane concentrations affect soil methane oxidation rates and methanotroph populations in pasture, an adjacent pine forest, and a landfill journal September 2012
Bacterial communities associated with four ctenophore genera from the German Bight (North Sea) journal December 2014
Microbes in the neonatal intensive care unit resemble those found in the gut of premature infants journal January 2014
Integrating community assembly and biodiversity to better understand ecosystem function: the Community Assembly and the Functioning of Ecosystems (CAFE) approach text January 2018
Positive diversity-functioning relationships in model communities of methanotrophic bacteria text January 2018
Three decades of global methane sources and sinks text January 2013
An improved dual-indexing approach for multiplexed 16S rRNA gene sequencing on the Illumina MiSeq platform journal January 2014