Suzanna Brauer Ph.D.

Education: Ph.D. Cornell University; Professional Experience: 2008-Present; Associate Professor; Department of Biology; Appalachian State University; Boone, NC 2007-2008; Senior Research Associate; Oregon Health & Science University; Portland, OR 2006-2007; Postdoctoral Fellow; Oregon Health & Science University; Portland, OR 2001-2006; Research Assistant; Cornell University; Ithaca, NY; Teaching Specialties: Introductory microbiology Microbial ecology and diversity Environmental microbiology Biogeochemistry Biomolecular evolution of the Earth Geomicrobiology Microbial oceanography; Areas of Expertise: Microbiological culturing Biogeochemistry of C and Mn Molecular microbial ecology; Research: I am broadly interested in the biogeochemistry, ecology and diversity of microorganisms in various environments, including rivers, coastal margins, wetlands/estuaries, deep-sea hydrothermal vents, and caves; and I am interested in studying the impact of these microorganisms on the biogeochemical cycling of Fe, Mn and C in the environment.

There are 31 included publications by Suzanna Brauer Ph.D.:

TitleDateViewsBrief Description
Aurantimonas Manganoxydans, Sp. Nov. And Aurantimonas Litoralis, Sp. Nov.: Mn(II) Oxidizing Representatives Of A Globally Distributed Clade Of Alpha-Proteobacteria From The Order Rhizobiales 2009 413 Several closely related Mn(II)-oxidizing alpha-Proteobacteriawere isolated from very different marine environments: strainSI85-9A1 from the oxic/anoxic interface of a stratified Canadianfjord, strain HTCC 2156 from the surface waters off the Oregonco...
Beyond The Usual Suspects: Methanogenic Communities In Eastern North American Peatlands Are Also Influenced By Nickel And Copper Concentrations 2021 25 Peatlands both accumulate carbon and release methane, but their broad range in environmental conditions means that the diversity of microorganisms responsible for carbon cycling is still uncertain. Here, we describe a community analysis of methanogen...
Carbon Quantity And Quality Drives Variation In Cave Microbial Communities And Regulates Mn(II) Oxidation 2017 918 Cave ecosystems are carbon limited and thus are particularly susceptible to anthropogenic pollution. Yet, how carbon quality and quantity that can modulate the pathways and amount of Mn cycling in caves remains largely unknown. To explore Mn cycling,...
Characterization Of Acid-Tolerant H2/CO2-Utilizing Methanogenic Enrichment Cultures From An Acidic Peat Bog In New York State 2014 740 Two methanogenic cultures were enriched from acidic peat soil using a growthmedium buffered to c. pH 5. One culture, 6A, was obtained from peat afterincubation with H2/CO2, whereas culture NTAwas derived from a 104 dilution ofuntreated peat into a m...
Cropping History Affects Nodulation And Symbiotic Efficiency Of Distinct Hairy Vetch (Vicia Villosa Roth.) Genotypes With Resident Soil Rhizobia 2013 339 Compatible rhizobia strains are essential for nodulationand biological nitrogen fixation (BNF) of hairy vetch(Vicia villosa Roth, HV). We evaluated how past HV cultivationaffected nodulation and BNF across host genotypes. Fivegroups of similar HV gen...
Culturable Rhodobacter And Shewanella Species Are Abundant In Estuarine Turbidity Maxima Of The Columbia River 2011 881 Measurements of dissolved, ascorbate-reducible and total Mn by ICP-OES revealed significantly higher concentrations during estuarine turbidity maxima (ETM) events, compared with non-events in the Columbia River. Most probable number (MPN) counts of M...
Dark Carbon Fixation In The Columbia River’s Estuarine Turbidity Maxima: Molecular Characterization Of Red-Type Cbbl Genes And Measurement Of DIC Uptake Ratesin Response To Added Electron Donors 2013 515 Dark CO2 fixation has been shown to rival the importance of oxygenic photosynthesis in the global carbon cycle, especially in stratified environments, such as salt wedge estuaries. We investigated this process in the Columbia River estuary using a va...
Enrichment Of Peat Yields Novel Methanogens: Approaches For Obtaining Uncultured Organisms In The Age Of Rapid Sequencing 2019 171 Methanogens are among the oldest forms of life on Earth and are detectable in a wide range of environments, but our knowledge of their overall diversity and functioning is limited. Peatlands in particular host a broad range of methanogens that contri...
Genome of Methanoregula Boonei 6A8 Reveals Adaptations To Oligotrophic Peatland Environments 2015 897 Analysis of the genome sequence of Methanoregula boonei strain 6A8, an acidophilic methanogen isolated from an ombrotrophic (rain-fed) peat bog, has revealed unique features that likely allow it to survive in acidic, nutrient-poor conditions. First, ...
Genomic Composition And Dynamics Among Methanomicrobiales Predict Adaptation To Contrasting Environments 2016 133 Members of the order Methanomicrobiales are abundant, and sometimes dominant, hydrogenotrophic (H2-CO2 utilizing) methanoarchaea in a broad range of anoxic habitats. Despite their key roles in greenhouse gas emissions and waste conversion to methane,...
Increased Abundance Of Gallionella Spp., Leptothrix Spp. And Total Bacteria In Response To Enhanced Mn And Fe Concentrations In A Disturbed Southern Appalachian High Elevation Wetland 2012 1081 The Sorrento wetland hosts several Fe- and Mn-rich seeps that are reported to have appeared after the area was disturbed by recent attempts at development. Culture-independent and culture-based analyses were utilized to characterize the microbial com...
Isolation Of A Novel Acidiphilic Methanogen From An Acidic Peat Bog 2006 1315 Acidic peatlands are among the largest natural sources of atmospheric methane and harbour a large diversity of methanogenic Archaea1. Despite the ubiquity of methanogens in these peatlands,indigenous methanogens capable of growth at acidic pH values ...
Latitude, Elevation, And Mean Annual Temperature Predict Peat Organic Matter Chemistry At A Global Scale 2021 20 Peatlands contain a significant fraction of global soil carbon, but how these reservoirs will respond to the changing climate is still relatively unknown. A global picture of the variations in peat organic matter chemistry will aid our ability to gau...
Limitations And Benefits Of ARISA Intra-Genomic Diversity Fingerprinting 2009 739 Monitoring diversity changes and contamination in mixed cultures and simple microcosms is challenged by fast community structure dynamics, and the need for means allowing fast, cost-efficient and accurate identification of microorganisms at high phyl...
Methanobacterium Paludis Sp. Nov. And A Novel Strain Of Methanobacterium Lacus Isolated From Northern Peatlands 2014 823 Two mesophilic, hydrogenotrophic methanogens, designated strains SWAN1T and AL-21, were isolated from two contrasting peatlands: a near circumneutral temperate minerotrophic fen in New York State, USA, and an acidic boreal poor fen site in Alaska, US...
Methanogenesis In Mclean Bog, An Acidic Peat Bog In Upstate New York: Stimulation By H2/CO2 In The Presence Of Rifampicin, Or By Low Concentrations Of Acetate 2004 438 Acidic peat bog soils produce CH4 and although molecular biological studies have demonstrated the presence of diverse methanogenic populations in them, few studies have sustained methanogenesis by adding the CH4 precursors H2/CO2 or acetate, and few ...
Methanogenic Archaea In Peatlands 2020 42 Methane emission feedbacks in wetlands are predicted to influence global climate under climate change and other anthropogenic stressors. Herein, we review the taxonomy and physiological ecology of the microorganisms responsible for methane production...
Methanolinea Mesophila Sp. Nov., A Hydrogenotrophic Methanogen Isolated From Rice Field Soil, And Proposal Of The Archaeal Family Methanoregulaceae Fam. Nov. Within The Order Methanomicrobiales 2012 573 A novel mesophilic, hydrogenotrophic methanogen, designated strain TNRT, was isolated from an anaerobic, propionate-degradation enrichment culture that was originally established from a ricefield soil sample from Taiwan. Cells were non-motile rods, 2...
Methanoregula Boonei Gen. Nov., Sp. Nov., An Acidiphilic Methanogen Isolated From An Acidic Peat Bog 2011 788 A novel acidiphilic, hydrogenotrophic methanogen, designated strain 6A8T, was isolated from anacidic (pH 4.0–4.5) and ombrotrophic (rain-fed) bog located near Ithaca, NY, USA. Cultures weredimorphic, containing thin rods (0.2–0.3 mm in diameter and 0...
Microbial Sequencing Analyses Suggest the Presence of a Fecal Veneer on Indoor Climbing Wall Holds 2014 1139 Artifcial climbing walls represent a unique indoor environment in which humans interact closely with a variety of surface types. Climbing wall holds may mediate transmission of organisms between individuals, and yet there are no studies that identify...
Micropepsis pineolensis gen. nov., sp. nov., A Mildly Acidophilic Alphaproteobacterium Isolated From A Poor Fen, And Proposal Of Micropepsaceae fam. nov. Within Micropepsales ord. nov. 2017 371 An obligately anaerobic, mildly acidophilic, fermentative alphaproteobacterium, designated strain CS4T, was isolated from an acidic, oligotrophic (nutrient poor) poor fen located near Pineola, NC, USA. Cultures contained Gram-negative, slightly curve...
Mn(II)-Oxidizing Bacteria Are Abundant And Environmentally Relevant Members Of Ferromanganese Deposits In Caves Of The Upper Tennessee River Basin 2013 907 The upper Tennessee River Basin contains the highest density of our nation’s caves; yet, little is known regarding speleogenesis or Fe and Mn biomineralization in these predominantly epigenic systems. Mn:Fe ratios of Mn and Fe oxide-rich bio?lms, coa...
A Novel Isolate And Widespread Abundance Of The Candidate Alphaproteobacterial Order (Ellin 329), In Southern Appalachian Peatlands 2016 689 Peatlands of all latitudes play an integral role in global climate change by serving as a carbon sink and a primary source of atmospheric methane; however, the microbial ecology of mid-latitude peatlands is vastly understudied. Herein, next generatio...
Nutrient Input Influences Fungal Community Composition And Size And Can Stimulate Mn(II) Oxidation In Caves 2015 600 Little is known about the fungal role in biogeochemical cycling in oligotrophic ecosystems. This study compared fungal communities and assessed the role of exogenous carbon on microbial community structure and function in two southern Appalachian cav...
Peatland Microbial Community Composition Is Driven By A Natural Climate Gradient 2020 37 Peatlands are important players in climate change–biosphere feedbacks via long-term net carbon (C) accumulation in soil organic matter and as potential net C sources including the potent greenhouse gas methane (CH4). Interactions of climate, site-hyd...
The Role Of Vegetation In Methane Flux To The Atmosphere: Should Vegetation Be Included As A Distinct Category In The Global Methane Budget? 2014 1064 Currently, the global annual flux of meth-ane (CH4) to the atmosphere is fairly well constrained at ca. 645 Tg CH4 year-1. However, the relative magnitudes of the fluxes generated from different natural (e.g. wetlands, deep seepage, hydrates, o...
Seasonal Changes In Methanogenesis And Methanogenic Community In Three Peatlands, New York State 2012 609 Fluctuating environmental conditions can promote diversity and control dominance in com- munity composition. In addition to seasonal temperature and moisture changes, seasonal supply of metabolic substrates selects populations temporally. Here we dem...
Southern Appalachian Peatlands Support High Archaeal Diversity 2014 937 Mid-latitude peatlands with a temperate cli- mate are sparsely studied and as such represent a gap in the current knowledge base regarding archaeal popu- lations present and their roles in these environments. Phylogenetic analysis of the archaeal pop...
Sustained Anthropogenic Impact In Carter Saltpeter Cave, Carter County, Tennessee And The Potential Effects On Manganese Cycling 2013 847 Anthropogenic impact is a pervasive problem in heavily trafficked cave systems and fecal contamination is equally problematic in many cave and karst waters worldwide. Carter Saltpeter Cave in Carter County, Tennessee exhibits Mn(III/IV) oxide coating...
Ubiquitous Dissolved Inorganic Carbon Assimilation By Marine Bacteria In The Pacific Northwest Coastal Ocean As Determined By Stable Isotope Probing 2012 469 In order to identify bacteria that assimilate dissolved inorganic carbon (DIC) in the northeast Pacific Ocean, stable isotope probing (SIP) experiments were conducted on water collected from 3 different sites off the Oregon and Washington coasts in M...
Vertical Profiles Of Methanogenesis And Methanogens In Two Contrasting Acidic Peatlands In Central New York State, USA 2006 620 Northern acidic peatlands are important sources ofatmospheric methane, yet the methanogens in themare poorly characterized. We examined methanogenicactivities and methanogen populations at differentdepths in two peatlands, McLean bog (MB) and Chicago...