Publications

Lear, G., Dickie, I., Banks, J., Boyer, S., Buckley, H.L., Buckley, T.R., Cruickshank, R., Dopheide, A., Handley, K.M., Hermans, S., Kamke, J., Lee, C.K., Macdiarmid, R., Morales, S.E., Orlovich, D.A., Smissen, R., Wood, J., Holdaway, R (2017) Methods for the Extraction, Storage, Amplification and Sequencing of DNA from Environmental Samples. New Zealand Journal of Ecology.

Anderson, C., Beare, M., Buckley, H.L., Lear, G. (2017) Bacterial and fungal communities respond differently to varying tillage depth in agricultural soils. PeerJ 5:e3288  

Laroche, O., Wood, S.A., Tremblay, L.A., Lear, G., Ellis, J.I., Pochon, X. (2017) Metabarcoding  monitoring analysis:the pros and cons of using co-extracted environmental DNA and RNA data to assess production impacts  on benthic communitiesPeerJ 5: e3347.

Lear, G., Lau, K., Perchec, A-M., Buckley, H.L., Case, B.S., Neale, M., Fierer, N., Jeff, J.W., Handley, K.M., Lewis, G.D. (2017) Following Rapoport’s Rule: the geographic range and genome size of bacterial taxa decline at warmer latitude. Environmental Microbiology 19: 3152-3162

Hermans, S.M., Buckley, H.L., Case, B.S., Curran-Cournane, F., Taylor, M., Lear, G. (2017) Bacteria as emerging indicators of soil condition. Applied and Environmental Microbiology 81 (1): e02826-16

Wu, J,. Anderson, B.J,. Buckley, H.L., Lewis, G., Lear, G. (2016) Aspect has a greater impact on soil bacterial community structure than elevation. FEMS Microbiology Ecology  fiw253

Laroche, O., Wood, S.A., Tremblay, L.A., Ellis, J.I., Lejzerowicz, F., Pawlowski, J., Lear, G., Atalah, J., Pochon, X (2016) First evaluation of foraminiferal metabarcoding for monitoring environmental impact from an offshore soil drilling site. Marine Environmental Research 120: 225-235.

Perez-Garcia, O., Lear, G., Singhal, N. (2016) Metabolic network modeling of microbial interactions in natural and engineered environmental systems. Frontiers in Microbiology 7: article 673.

Commault, A.S., Lear, G., Bouvier, S., Feiler, L., Karacs, J., Weld, R.J. (2016) Geobacter-dominated biofilms used as amperometric BOD sensors. Biochemical Engineering Journal 109: 88-95.

Commault, A.S., Barriere, F., Lapinsonniere, L., Lear, G., Bouvier, S., Weld, R.J. (2015) Influence of inoculum and anode surface properties on the selection of Geobacter-dominated biofilms. Bioresource Technology 60: 1988-2002

Lau, K.E.M., Washington, V.J., Fan, V., Neale, M.W., Lear, G., Curran, J., Lewis, G.D (2015) A novel Bacterial Community Index to assess stream ecological health. Freshwater Biology 60: 1988-2002

Commault, A.S., Lear, G., Weld, R.J. (2015) Maintenance of Geobacter-dominated biofilms in microbial electrolysis cells treating synthetic wastewater. Bioelectrochemistry 106: 150-158

Dopheide, A., Lear, G., He, Z., Zhou, J., Lewis, G.D. (2015) Functional gene composition and redundancy in stream microbial biofilms. PLosOne DOI: 10.1371/journal.pone.0123179 

Curran-Cournane, F., Lear, G., Schwendenmann, L., Khin, J (2015) Heavy metal soil pollution is influenced by the location of green spaces within urban settings. Soil Research  53: 306-315.

Piggot, J.J., Salis, R.K., Lear, G., Townsend, C.R., Matthei, C.D. (2015) Climate warming and agricultural stressors interact to determine stream periphyton composition. Global Change Biology 21: 206-222.

Adair, K.L., Wratten, S., Barnes, A-M., Waterhouse, B.R., Smith, M., Lear, G., Weber, P., Pizey, M., Boyer, S (2014) Effects of biosolids on biodiesel crop yield and belowground communities. Ecological Engineering 68: 270-278.

Commault, A.S., Lear, G., Weld, R.J. (2014) Comment on microbial community composition is unaffected by anode potential. Environmental Science and Technology. 48(24): 14851-14852

Winkworth, C.L., Lear, G. (2014) Antimicrobial potential of the ionophore Monensin on freshwater biofilm bacteria. Environmental Science and Pollution Research 21: 10139-10150.

Lear, G., Bellamy, J., Case, B., Lee, J., Buckley, H (2014) Fine-scale patterns in bacterial community composition and function within freshwater ponds. The ISME Journal 8: 1715-1726.

Commault, A.S., Lear, G., Novis, P., Weld, R.S (2014) Photosynthetic biocathode enhances power output of a sediment-type microbial fuel cell. New Zealand Journal of Botany 52: 48-59

Ancion, P-Y., Lear, G., Neale, M., Roberts, K., Lewis, G.D. (2014) Using biofilms as a novel approach to assess stormwater treatment efficacy. Water Research 49 (1): 406-415

Wells, N.S., Clough, T.J., Condron, L.M., Baisden, W.T., Harding, J.S., Dong, Y., Lewis, G.D., Lear, G. (2013) Biogeochemistry and community ecology in a spring-fed urban river following a major earthquake. Environmental Pollution. 182: 190-200.

Washington, V., Lear, G., Neale, M., Lewis, GD (2013) Environmental effects on biofilm bacterial communities: a comparison of natural and anthropogenic factors in new Zealand streams. Freshwater Biology. 58 (11): 2277-2286.

Lee, J., Buckley, H., Etienne, R.S, Lear, G. (2013) Both species sorting and neutral processes drive assembly of bacterial communities in aquatic microcosms. FEMS Microbiology Ecology. 86(2): 288-302.

Magbanua, F.S., Townsend, C.R., Hageman, K.J., Lange, K., Lear, G., Lewis, G.D., Matthei, C.D. (2013) Understanding the combined influence of fine sediment and glyphosate on stream periphyton communities. Water Research 47(14): 5110-5120

Commault, A., Lear, G., Packer, M., Weld, R. (2013) Influence of anode potentials on selection of Geobacter strains in microbial electrolysis cells. Bioresource Technology 139: 226-234.

Adair, K., Wratten, S., Lear, G. (2013) Soil phosphorus depletion and shifts in plant communities change bacterial community structure in a long-term grassland management trial. Environmental Microbiology Reports 5 (3): 404-413.

Yamamura, T., Schwendenmann, L., Lear, G (2013) Tree species identity has little impact on the structure of soil bacterial communities in a 10 yr-old tropical tree plantation. Biology and Fertility of Soils 49: 819-828.

Lear, G., Washington, V., Neale, M., Case, B., Buckley, H., Lewis, GD (2013) Biogeography of Stream Biofilms. Global Ecology and Biogeography. 22: 544-554

Ancion, P-Y., Lear, G., Dopheide, A., Lewis, GD (2013) Metal concentrations in stream biofilms and sediments and their potential to explain biofilm microbial community structure. Environmental Pollution 173: 117-124.

Lear, G., Ancion, P-Y., Harding, J., Lewis, GD (2012) Use of bacterial communities to assess the ecological health of a recently restored stream. New Zealand Journal of Marine and Freshwater Research 46: 291-301.

Lear, G., Dopheide, A., Ancion, P-Y., Lewis, GD (2011) A comparison of bacterial, ciliate and macroinvertebrate indicators of stream ecological health. Aquatic Ecology 45: 517-727.

Dopheide, A., Lear, G., Stott, R., Lewis, G.D. (2011) Preferential feeding by the ciliates Chilodonella and Tetrahymena and their effects on bacterial biofilm structure and composition.Applied and Environmental Microbiology 77 (13): 4564-4572.

Lear, G., Dong, Y., Lewis, GD (2010)  Comparison of methods for the extraction of DNA from stream epilithic biofilms. Antonie van Leeuwenhoek  International Journal of General and Molecular Microbiology 98 (4): 567-571.

Ancion, P-Y., Lear, G., Lewis, GD (2010) Three common metals contaminants of urban runoff (Zn, Cu and Pb) accumulate in freshwater biofilm and modify embedded bacterial communities. Environmental Pollution 158 (8): 2738-2745.

Lear, G., McBeth, JM., Boothman, C., Gunning, DJ., Ellis, B., Lawson, R., Morris, K., Burke, IT., Bryan, ND., Brown, AP., Livens, FR., Lloyd, JR (2010) Towards the insitu remediation of radioactive waste; probing the biogeochemical behaviour of technetium using a novel nuclear imaging technique. Environmental Science and Technology 44 (11): 156-162.

Dopheide, A., Lear, G., Stott, R., Lewis, GD (2009) Relative diversity and community structure of ciliates in stream biofilms according to molecular and microscopy methods. Applied and Environmental Microbiology 75: 5261-5272.

Lear, G., Niyogi, D., Harding, J., Dong, Y., Lewis, GD (2009) Biofilm bacterial community structure in streams affected by acid mine drainage. Applied and Environmental Microbiology 75 (11): 3455-3460.

Lear, G., Boothroyd, IKG., Turner, S., Roberts, K., Lewis, GD (2009) A comparison of bacterial and benthic invertebrate community assemblages as indicators of ecological health within freshwater streams. Freshwater Biology 54: 1531-1543.

Lear, G., Turner, S., Lewis, GD (2009) Effect of light regimes on the utilisation of an exogenous carbon source by biofilm bacterial communities. Aquatic Ecology 43: 207-220.

Lear, G., Lewis, GD (2009) Impact of land use on bacterial communities within stream biofilms. Ecological Indicators 9: 848-855.

Lear, G., Lewis, GD (2009) Nested automated ribosomal intergenic spacer analysis: a rapid and accurate method for comparison of bacterial community composition. Journal of Rapid Methods and Automation in Microbiology 17: 257-270.

Harbottle, MJ., Lear, G., Sills, GC., Thompson, IP (2009) Enhanced biodegradation of pentachlorophenol in unsaturated soil using reverse field electrokinetics. Journal of Environmental Management 90: 1983-1900.

Hery, M., Gault, AG., Rowland, HAL., Lear, G., Polya, DA., Lloyd, JR (2008) Molecular and cultivation-dependent analysis of metal-reducing bacteria implicated in arsenic mobilisation in South East Asian aquifers. Applied Geochemistry 23: 3215-3223.

Lear, G., Anderson, MJ., Smith, JP., Boxen, K., Lewis, GD (2008) Spatial and temporal heterogeneity of the bacterial communities in stream epilithic biofilms. FEMS Microbiology Ecology 65: 463-473.

Dopheide, A., Lear, G., Stott, R., Lewis, GD (2008) Molecular characterisation of ciliate diversity in stream biofilms. Applied and Environmental Microbiology 74: 1740-1747.

Lear, G., Polya, DA., Song, B., Gault, AG., Lloyd, JR (2007) Molecular analysis of arsenate-reducing bacteria within Cambodian sediments following amendment with acetate. Applied and Environmental Microbiology 73: 1041-1048

Lear, G., Harbottle, MJ., Sills, G., Knowles, CJ., Thompson, IP (2007) Impact of electrokinetic remediation on microbial communities within PCP contaminated soil. Environmental Pollution 146: 139-146.

Al-Bokari, M., Boothman, C., Lear, G., Lloyd, JR., Livens, FR (2007) Responses of U and Pu to microbially driven nitrate reduction in sediments. Royal Society of Chemistry Special Publications: Environmental Radiochemical Analysis III: 91-100.

McBeth, JM., Lear, G., Morris, K., Burke, IT., Livens, FR., Lloyd, FR (2007) technetium reduction and reoxidation in aquifer sediments. Geomicrobiology 23: 1-9.

Fox, JR., Morris, K., Lear, G., Lloyd, JR., Mortimer, RJG., Beadle, I (2006) The biogeochemical behaviour of U(VI) in the simulated near-field  of a low-level radioactive waste repository. Applied Geochemistry 21: 1539-1550.

Lear, G., Harbottle, MJ., van der Gast, Cj., Jackman, S., Knowles, CJ., Sills, G., Thompson, IP (2004) The effect of electrokinetics on soil microbial communities. Soil Biology and Biochemistry 36: 1751-1760.

Books and Book Chapters

Jones, O.A.H., Lear, G., Welji, A.M., Collins, G., Quince, C (2017) Community metabolomics in environmental microbiology. Microbial Metabolomics: Applications in Clinical: Environmental and Industrial Microbiology. Beale, D.J., Kouremenos, K.A., Palombo, E.A (Eds). Springer Press.

Perchec, A-M., Lear, G., Neale, M., Lewis, G. (2017) Stream microbial communities. In: Pearson, C., Davie, T., Jellyman, P., Harding, J.S. (Eds.) Advances in New Zealand Freshwater Science. Hydrological and Freshwater Science Societies, NZ.

Lear, G [Ed.] (2016) Biofilms in Bioremediation: Current Research and Emerging Technologies. Caister Academic Press, Norwich, UK. 252 pp.

Lear, G., Lewis, GD [Eds.] (2012) Microbial Biofilms: Current Research and Applications. Caister Academic Press, Norwich, UK, 220pp.

Sills, G.C., Bartholomeesen, G., Lintern, D.G., Harbottle, M., Lear, G. (2004) The structure of soil. In Jardine, R.J., Potts, D.M., Higgins, K.G. (Eds.) Advances in Geotechnical Engineering. American Society of Civil Engineers: London 1400 pp.

Technical Reports

Singh, J., Curran-Cournane, F., Waipara, N., Schwendenmann, L., Lear, G (2017) Comparison of methods used to detect the organism responsible for Kauri dieback, Phytophthora agathidicida, from soil samples. Technical Report 2017/019 for Auckland Council, New Zealand, 55pp.

Lewis, GD., Washington, V., Lear, G., Roberts, K., Curran, J., Fan, V., Neale, M (2011) A bacterial community index (BCI) for New Zealand streams. Technical Report TR 2010/068. 200pp.

Lear, G., Ancion, P-Y., Roberts, K., Lewis, GD (2009) Use of microbial biofilms to monitor the efficacy of a stormwater treatment train. Technical Report TR2009_086 for the Auckland Regional Council. 52pp.

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