#  2005-2009 

 



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[A contemporary microbially maintained subglacial ferrous ocean](http://hwpi.harvard.edu/files/pearson/files/a_contemporary_microbially_maintained_subglacial_ferrous_ocean.pdf)  
Mikucki JA, Pearson A, Johnston DT, Turchyn AV, Farquhar J, Schrag DP, Anbar AD, Priscu JC, Lee PA (2009) Science 324

[The radiocarbon signature of microorganisms in the mesopelagic ocean](http://hwpi.harvard.edu/files/pearson/files/the_radiocarbon_signature_of_microorganisms_in_the_mesopelagic_ocean.pdf)  
Hansman RL, Griffin S, Watson JT, Druffel ERM, Ingalls AE, Pearson A, Aluwihare LI (2009) PNAS 106(16):6513-6518

[Global cooling during the Eocene-Oligocene climate transition](http://hwpi.harvard.edu/files/pearson/files/global_cooling_during_the_eocene-oligocene_climate_transition.pdf)  
Liu Z, Pagani M, Zinniker D, DeConto R, Huber M, Brinkuis H, Shah SR, Leckie M, Pearson A (2009) Science 323

[Oligoprenyl-curcumanes and other new aromatic isoprenoids from the 1.64 billion year old Barney Creek formation](http://hwpi.harvard.edu/files/pearson/files/oligoprenyl-curcumanes.pdf)  
Brocks JJ, Bosak T, Pearson A (2009) Organic Geochemistry 40:795–801

[An interlaboratory study of TEX86 and BIT analysis using high performance liquid chromatography-mass spectrometry](http://hwpi.harvard.edu/files/pearson/files/an_interlaboratory_study_of_tex86_and_bit_analysis_using_high_performance_liquid_chromatography-mass_spectrometry.pdf)  
Schouten S, Hopmans EC, van der Meer J, Mets A, Bard E, Bianchi TS, Diefendorf A, Freeman KH, Furukawa Y, Huguet C, Ingalls A, Me´not-Combes G, Nederbragt AJ, Oba M, Pearson A, Pearson EJ, Rosell-Mele A, Schaeffer P, Shah SR, Shanahan TM, Smith RW, Smittenberg R, Talbot HM, Uchida M, Van Mooy BAS, Yamamoto M, Zhang Z, Sinninghe Damste JS (2009) Geochemistry, Geophysics, Geosystems 10

[Diversity of hopanoids and squalene-hopene cyclases across a tropical land-sea gradient](http://hwpi.harvard.edu/files/pearson/files/diversity_of_hopanoids_and_squalene-hopene_cyclases_across_a_tropical_land-sea_gradient.pdf)  
Pearson A, Leavitt WD, Sáenz JP, Summons RE, Tam MC-M, Close HG (2009) Environmental Microbiology 11(5), 1208–1223

[Anoxygenic photosynthesis modulated Proterozoic oxygen and sustained Earths middle age](http://hwpi.harvard.edu/files/pearson/files/anoxygenic_photosynthesis_modulated_proterozoic_oxygen_and_sustained_earths_middle_age.pdf)  
Johnston DT, Wolfe-Simon F, Pearson A, Knoll AH (2009) PNAS 106(40):16925–16929

[A method for determining the nitrogen isotopic composition of porphyrins](http://hwpi.harvard.edu/files/pearson/files/a_method_for_determining_the_nitrogen_isotopic_composition_of_porphyrins.pdf)  
Higgins MB, Robinson RS, Casciotti KL, McIlvin MR, Pearson A (2009) Analytical Chemistry 81:184–192

[Distribution of microbial terpenoid lipid cyclases in the global ocean metagenome](http://hwpi.harvard.edu/files/pearson/files/distribution_of_microbial_terpenoid_lipid_cyclases_in_the_global_ocean_metagenome.pdf)  
Pearson A & Rusch DB (2009) The ISME Journal 3:352–363

[Who lives in the sea floor](http://hwpi.harvard.edu/files/pearson/files/who_lives_in_the_sea_floor.pdf)  
Pearson A (2008) Nature 454

[Sporulenes - heptaprenyl metabolites from Bacillus subtilis spores](http://hwpi.harvard.edu/files/pearson/files/sporulenes_-_heptaprenyl_metabolites_from_bacillus_subtilis_spores.pdf)  
Kontnik R, Bosak T, Butcher RA, Brocks JJ, Losick R, Clardy J, Pearson A (2008) Organic Letters 10(16):3551-3554

[Sterols in a unicellular relative of the metazoans](http://hwpi.harvard.edu/files/pearson/files/sterols_in_a_unicellular_relative_of_the_metazoans.pdf)  
Kodner RB, Summons RE, Pearson A, King N, Knoll AH (2008) PNAS 105(29):9897-9902

[Sterols in red and green algae - quantification phylogeny and relevance for the interpretation of geologic steranes](http://hwpi.harvard.edu/files/pearson/files/sterols_in_red_and_green_algae_-_quantification_phylogeny_and_relevance_for_the_interpretation_of_geologic_steranes.pdf)  
Kodner RB, Pearson A, Summons RE, Knoll AH (2008) Geobiology 6:411–420

[Factors controlling the distribution of archaeal tetraethers in terrestrial hot springs](http://hwpi.harvard.edu/files/pearson/files/factors_controlling_the_distribution_of_archaeal_tetraethers_in_terrestrial_hot_springs.pdf)  
Pearson A, Pi Y, Zhae W, Li WJ, Li Y, Inskeep W, Perevalova A, Romanek C, Li S, Zhang CL (2008) Applied and Environmental Microbiology 74(11):3523-3532

[A polycyclic terpenoid that alleviates oxidative stress](http://hwpi.harvard.edu/files/pearson/files/a_polycyclic_terpenoid_that_alleviates_oxidative_stress.pdf)  
Bosak T, Losick RM, Pearson A (2008) PNAS 105(18):6725–6729

[Quantifying microbial utilization of petroleum hydrocarbons in salt marsh sediments by using the 13C content of bacterial rRNA](http://hwpi.harvard.edu/files/pearson/files/quantifying_microbial_utilization_of_petroleum_hydrocarbons_in_salt_marsh_sediments_by_using_the_13c_content_of_bacterial_rrna.pdf)  
Pearson A, Kraunz KS, Sessions AL, Dekas AE, Leavitt WD, Edwards KJ (2008) Applied and Environmental Microbiology 74(4):1157-1166

[Using SPIRAL - Single Pollen Isotope Ratio AnaLysis - to estimate C3- and C4-grass abundance in the paleorecord](http://hwpi.harvard.edu/files/pearson/files/using_spiral_-_single_pollen_isotope_ratio_analysis_-_to_estimate_c3-_and_c4-grass_abundance_in_the_paleorecord.pdf)  
Nelson DM, Hu FS, Scholes DR, Joshi N, Pearson A (2008) Earth and Planetary Science Letters 269:11–16

[Vertical distribution of microbial lipids and functional genes in chemically distinct layers of a highly polluted meromictic lake](http://hwpi.harvard.edu/files/pearson/files/vertical_distribution_of_microbial_lipids_and_functional_genes_in_chemically_distinct_layers_of_a_highly_polluted_meromictic_lake.pdf)  
Ertefai TF, Fisher MC, Fredricks HF, Lippa JS, Pearson A, Birgei D, Udert KM, Cavanaugh CM, Gschwend PM, Hinrichs K-U (2008) Organic Geochemistry 39:1572–1588

[Origins of archaeal tetraether lipids in sediments - Insights from radiocarbon analysis](http://hwpi.harvard.edu/files/pearson/files/origins_of_archaeal_tetraether_lipids_in_sediments_-_insights_from_radiocarbon_analysis.pdf)  
Shah SR, Mollenhauer G, Ohkouchi N, Eglinton TI, Pearson A (2008) Geochimica et Cosmochimica Acta 72:4577–4594

[Isolation characterization and ecology of sulfur-respiring Crenarchaea inhabiting acid-sulfate-chloride-containing geothermal springs in Yellowstone National Park](http://hwpi.harvard.edu/files/pearson/files/isolation_characterization_and_ecology_of_sulfur-respiring_crenarchaea_inhabiting_acid-sulfate-chloride-containing_geothermal_springs_in_yellowstone_national_park.pdf)  
Boyd ES, Jackson RA, Encarnacion G, Zahn JA, Beard T, Leavitt WD, Pi Y, Zhang CL, Pearson A, Geesey GG (2007) Applied and Environmental Microbiology 73(20):6669-6677

[Novel hopanoid cyclases from the environment](http://hwpi.harvard.edu/files/pearson/files/novel_hopanoid_cyclases_from_the_environment.pdf)  
Pearson A, Flood Page SR, Jorgenson TL, Fischer WW, Higgins MB (2007) Environmental Microbiology 9(9):2175–2188

[Carbon-isotopic analysis of individual pollen grains from C3 and C4 grasses using a spooling-wire microcombustion interface](http://hwpi.harvard.edu/files/pearson/files/carbon-isotopic_analysis_of_individual_pollen_grains_from_c3_and_c4_grasses_using_a_spooling-wire_microcombustion_interface.pdf)  
Nelson DM, Hu FS, Mikucki JA, Tian J, Pearson A (2007) Geochimica et Cosmochimica Acta 71:4005–4014

[Ultra-microscale - 5–25 μg C - analysis of individual lipids by 14C AMS - Assessment and correction for sample processing blanks](http://hwpi.harvard.edu/files/pearson/files/ultra-microscale_-_5-25_mg_c_-_analysis_of_individual_lipids_by_14c_ams_-_assessment_and_correction_for_sample_processing_blanks.pdf)  
Shah SR & Pearson A (2007) Radiocarbon 49(1):69-82

[Hypotheses for the origin and early evolution of triterpenoid cyclases](http://hwpi.harvard.edu/files/pearson/files/hypotheses_for_the_origin_and_early_evolution_of_triterpenoid_cyclases.pdf)  
Fischer WW & Pearson A (2007) Geobiology 5:19–34

[Thermophilic temperature optimum for crenarchaeol synthesis and its implication for Archaeal evolution](http://hwpi.harvard.edu/files/pearson/files/thermophilic_temperature_optimum_for_crenarchaeol_synthesis_and_its_implication_for_archaeal_evolution.pdf)  
Zhang, CL, Pearson A, Li Y-L, Mills G, Wiegel J (2006) Applied and Environmental Microbiology 72(6):4419-4422

[Quantifying archaeal community autotrophy in the mesopelagic ocean using natural radiocarbon](http://hwpi.harvard.edu/files/pearson/files/quantifying_archaeal_community_autotrophy_in_the_mesopelagic_ocean_using_natural_radiocarbon.pdf)  
Ingalls AE, Shah SR, Hansman RL Aluwihare LI, Santos GM, Druffel ERM, Pearson A (2006) PNAS 103(17):6442-6447

[Building the biomarker tree of life](http://hwpi.harvard.edu/files/pearson/files/building_the_biomarker_tree_of_life.pdf)  
Brocks JJ & Pearson A (2005) Reviews in Mineralogy & Geochemistry 59:233-258

[Ten years of compound-specific radiocarbon analysis](http://hwpi.harvard.edu/files/pearson/files/ten_years_of_compound-specific_radiocarbon_analysis.pdf)  
Ingalls AE & Pearson A (2005) Oceanography 18:3

[Bacterial incorporation of relict carbon in the hydrothermal environment of Guaymas Basin](http://hwpi.harvard.edu/files/pearson/files/bacterial_incorporation_of_relict_carbon_in_the_hydrothermal_environment_of_guaymas_basin.pdf)  
Pearson A, Seewald JS, Eglinton TI (2005) Geochimica et Cosmochimica Acta 69(23):5477-5486

[Targeted genomic detection of biosynthetic pathways - anaerobic production of hopanoid biomarkers by a common sedimentary microbe](http://hwpi.harvard.edu/files/pearson/files/targeted_genomic_detection_of_biosynthetic_pathways_-_anaerobic_production_of_hopanoid_biomarkers_by_a_common_sedimentary_microbe.pdf)  
Fischer WW, Summons RE, Pearson A (2005) Geobiology 3:33-40

Vibrational spectroscopy of 3,4-difluorocyclobutenes: cis-d(0), trans-d(0) and trans-d(4) species.

Craig NC, Brickey TW, Lingenfelter PT, Osmani AS, Rathore MO, Pearson A (2005) Spectrochimica Acta A – Molecular and Biomolecular Spectroscopy 61, 1571-1583.