Anderson, C.G., Joshi, G., Bair, D.A., Oriol, C., He, G., Parikh, S.J., Denison, M.S. and Scow, K.M., 2017. Use of nuclear receptor luciferase-based bioassays to detect endocrine active chemicals in a biosolids-biochar amended soil. Chemosphere.

Winsome, T., Silva, L.C., Scow, K.M., Doane, T.A., Powers, R.F. and Horwath, W.R., 2017. Plant-microbe interactions regulate carbon and nitrogen accumulation in forest soils. Forest Ecology and Management, 384, pp.415-423.

Griffin, D.E., Wang, D., Parikh, S.J. and Scow, K.M., 2017. Short-lived effects of walnut shell biochar on soils and crop yields in a long-term field experiment. Agriculture, Ecosystems & Environment, 236, pp.21-29.

Cohen, C.R., Steinfeld, R.L., Weke, E., Bukusi, E.A., Hatcher, A.M., Shiboski, S., Rheingans, R., Scow, K.M., Butler, L.M., Otieno, P. and Dworkin, S.L., 2017. Chapter 8 Shamba Maisha: Pilot Agricultural Intervention for Food Security and HIV Health Outcomes in Kenya: Design, Methods, Baseline Results and Process Evaluation of a Cluster-Randomized Controlled Trial. In Food Insecurity and Disease: Prevalence, Policy, and Politics (pp. 125-158). Apple Academic Press.

Mitchell, J.P., Shrestha, A., Mathesius, K., Scow, K.M., Southard, R.J., Haney, R.L., Schmidt, R., Munk, D.S. and Horwath, W.R., 2017. Cover cropping and no-tillage improve soil health in an arid irrigated cropping system in California’s San Joaquin Valley, USA. Soil and Tillage Research,165, pp.325-335.

Maltais-Landry, G., Scow, K., Brennan, E., Torbert, E. and Vitousek, P., 2016. Higher flexibility in input N: P ratios results in more balanced phosphorus budgets in two long-term experimental agroecosystems. Agriculture, Ecosystems & Environment, 223, pp.197-210.

Pincus, L., Margenot, A., Six, J. and Scow, K., 2016. On-farm trial assessing combined organic and mineral fertilizer amendments on vegetable yields in central Uganda. Agriculture, Ecosystems & Environment, 225, pp.62-71.

Joshi, G., Schmidt, R., Scow, K.M., Denison, M.S. and Hristova, K.R., 2016. Effect of benzene and ethylbenzene on the transcription of methyl-tert-butyl ether degradation genes of Methylibium petroleiphilum PM1. Microbiology,162(9), pp.1563-1571.

Geisseler, D., Lazicki, P.A. and Scow, K.M., 2016. Mineral nitrogen input decreases microbial biomass in soils under grasslands but not annual crops. Applied Soil Ecology, 106, pp.1-10.

Wang, D., Griffin, D.E., Parikh, S.J. and Scow, K.M., 2016. Impact of biochar amendment on soil water soluble carbon in the context of extreme hydrological events. Chemosphere, 160, pp.287-292.

Weiser, S.D., Bukusi, E.A., Steinfeld, R.L., Frongillo, E.A., Weke, E., Dworkin, S.L., Pusateri, K., Shiboski, S., Scow, K., Butler, L.M. and Cohen, C.R., 2015. Shamba Maisha: randomized controlled trial of an agricultural and finance intervention to improve HIV health outcomes. AIDS, 29(14), pp.1889-1894.

Wang, D., Mukome, F.N., Yan, D., Wang, H., Scow, K.M. and Parikh, S.J., 2015. Phenylurea herbicide sorption to biochars and agricultural soil. Journal of Environmental Science and Health, Part B, 50(8), pp.544-551.

Zhang, N.N., Sun, Y.M., Wang, E.T., Yang, J.S., Yuan, H.L. and Scow, K.M., 2015. Effects of intercropping and Rhizobial inoculation on the ammonia-oxidizing microorganisms in rhizospheres of maize and faba bean plants.Applied Soil Ecology, 85, pp.76-85.

Maltais-Landry, G., K. Scow, E. Brennan, and P. Vitousek. "Long-term effects of compost and cover crops on soil phosphorus in two California agroecosystems." Soil Science Society of America Journal 79, no. 2 (2015): 688-697.

Joshi, Geetika, Radomir Schmidt, K. M. Scow, Michael S. Denison, and Krassimira R. Hristova. "Gene mdpC plays a regulatory role in the methyl-tert-butyl ether degradation pathway of Methylibium petroleiphilum strain PM1."FEMS microbiology letters 362 (2015): fnv029.

Zhang, Nan Nan, Yan Mei Sun, En Tao Wang, Jin Shui Yang, Hong Li Yuan, and K. M. Scow. "Effects of intercropping and Rhizobial inoculation on the ammonia-oxidizing microorganisms in rhizospheres of maize and faba bean plants." Applied Soil Ecology 85 (2015): 76-85.

Pereira, Engil Isadora Pujol, Emma C. Suddick, Fungai ND Mukome, Sanjai J. Parikh, Kate Scow, and Johan Six. "Biochar alters nitrogen transformations but has minimal effects on nitrous oxide emissions in an organically managed lettuce mesocosm." Biology and Fertility of Soils (2015): 1-10.

Cohen, Craig R., Rachel L. Steinfeld, Elly Weke, Elizabeth A. Bukusi, Abigail M. Hatcher, Stephen Shiboski, Richard Rheingans et al. "Shamba Maisha: Pilot agricultural intervention for food security and HIV health outcomes in Kenya: design, methods, baseline results and process evaluation of a cluster-randomized controlled trial." SpringerPlus 4, no. 1 (2015): 122.

Maltais-Landry, G., K. Scow, and E. Brennan. "Soil phosphorus mobilization in the rhizosphere of cover crops has little effect on phosphorus cycling in California agricultural soils." Soil Biology and Biochemistry 78 (2014): 255-262.

Geisseler, D., and K. M. Scow. "Does long-term use of mineral fertilizers affect the soil microbial biomass?" Better Crops with Plant Food 98, no. 4 (2014): 13-15.

Geisseler, Daniel, and Kate M. Scow. "Long-term effects of mineral fertilizers on soil microorganisms–A review." Soil Biology and Biochemistry 75 (2014): 54-63.

García-Orenes, F., Morugán-Coronado, A., Zornoza, R., & Scow, K. (2013). Changes in Soil Microbial Community Structure Influenced by Agricultural Management Practices in a Mediterranean Agro-Ecosystem. PloS one, 8(11), e80522.

Park, I., Zhang, N., Ogunyoku, T. A., Young, T. M., & Scow, K. M. (2013). Effects of Triclosan and Biosolids on Microbial Community Composition in an Agricultural Soil. Water Environment Research, 85(12), 2237-2242.

Key, Katherine C., Kerry L. Sublette, Kathleen Duncan, Douglas M. Mackay, Kate M. Scow, and Dora Ogles. "Using DNA‐Stable Isotope Probing to Identify MTBE‐and TBA‐Degrading Microorganisms in Contaminated Groundwater."Groundwater Monitoring & Remediation 33, no. 4 (2013): 57-68.

Hicks, Kristin A., Radomir Schmidt, Michael G. Nickelsen, Susan L. Boyle, Jeffrey M. Baker, Paul M. Tornatore, Krassimira R. Hristova, and Kate M. Scow. "Successful treatment of an MTBE-impacted aquifer using a bioreactor self-colonized by native aquifer bacteria." Biodegradation (2013): 1-13.

Rasa, Ehsan, Laura Foglia, Douglas M. Mackay, and Kate M. Scow. "Effect of different transport observations on inverse modeling results: case study of a long-term groundwater tracer test monitored at high resolution." Hydrogeology Journal 21, no. 7 (2013): 1539-1554.

Jung, J., Choi, S., Jung, H., Scow, K. M., & Park, W. (2013). Primers for amplification of nitrous oxide reductase genes associated with Firmicutes and Bacteroidetes in organic-compound-rich soils. Microbiology, 159(Pt 2), 307-315.

Rasa, Ehsan, Barbara A. Bekins, Douglas M. Mackay, Nicholas R. Sieyes, John T. Wilson, Kevin P. Feris, Isaac A. Wood, and Kate M. Scow. "Impacts of an ethanol‐blended fuel release on groundwater and fate of produced methane: Simulation of field observations." Water Resources Research 49, no. 8 (2013): 4907-4926.

Pujol Pereira, E. I., Chung, H., Scow, K., & Six, J. (2013). Microbial Communities and Soil Structure are Affected by Reduced Precipitation, but Not by Elevated Carbon Dioxide. Soil Science Society of America Journal,77(2), 482-488.

North, KP, Mackay, DM, Kayne, JS, Petersen, D, Rasa, E, Rastegarzadeh, L, Holland, RB and Scow, KM. 2012, In Situ Biotreatment of TBA with Recirculation/ Oxygenation. Ground Water Monitoring and Remediation 32(3): 52-62.

Mackay, D.M., Einarson, M.D., Kaiser, P.M., Nozawa‐Inoue, M., Goyal, S., Chakraborty, I., Rasa, E. and Scow, K.M., 2012. Mass discharge in a tracer plume: evaluation of the Theissen polygon method. Groundwater, 50(6), pp.895-907.

Kearney, S, SJ Fonte, A Salomon, J Six, KM Scow. 2012. Forty percent revenue increase by combining organic and mineral nutrient amendments in Ugandan smallholder market vegetable production Agronomy for Sustainable Development, 1-9

Robinson, DA, N Hockley, E Dominati, I Lebron, KM Scow, B Reynolds, BA Emmett, AM Keith, LW de Jonge, P Schjønning, P Moldrup, Scott B Jones, M Tuller. 2012. Natural capital, ecosystem services, and soil change: Why soil science must embrace an ecosystems approach. Vadose Zone J. 11:1

Schmidt, R., Klemme, D.A., Scow, K. and Hristova, K., 2012. Microbial biosafety of pilot-scale bioreactor treating MTBE and TBA-contaminated drinking water supply. Journal of hazardous materials, 209, pp.524-528.

Eden, M., Moldrup, P., Schjønning, P., Vogel, H.J., Scow, K.M. and de Jonge, L.W., 2012. Linking soil physical parameters along a density gradient in a loess-soil long-term experiment. Soil Science, 177(1), pp.1-11.

Eden, M., Moldrup, P., Schjønning, P., Scow, K.M. and de Jonge, L.W., 2012. Soil-gas phase transport and structure parameters for a soil under different management regimes and at two moisture levels. Soil Science, 177(9), pp.527-534.

Chamindu Deepagoda, T.K.K., Moldrup, P., Jensen, M.P., Jones, S.B., de Jonge, L.W., Schjønning, P., Scow, K., Hopmans, J.W., Rolston, D.E., Kawamoto, K. and Komatsu, T., 2012. Diffusion aspects of designing porous growth media for Earth and space. Soil Science Society of America Journal, 76(5), pp.1564-1578.

Vendelboe, A.L., Moldrup, P., Schjønning, P., Oyedele, D.J., Jin, Y., Scow, K.M. and de Jonge, L.W., 2012. Colloid release from soil aggregates: application of laser diffraction. Vadose Zone Journal, 11(1), pp.0-0.

Tomich, TP, S Brodt, H Ferris, R Galt, W Horwath, E Kebreab, J Leveau, D Liptzin, M Lubell, P Merel, R Michelmore T Rosenstock, K Scow, J Six, N Williams, and L Yang. 2011. “Agroecology: A review from a global change perspective.” Annual Review of Environment and Resources 36:193-222.

Smart, D.R., Alsina, M.M., Wolff, M.W., Matiasek, M.G., Schellenberg, D.L., Edstrom, J.P., Brown, P.H. and Scow, K.M., 2011. N2O emissions and water management in California perennial crops. Understanding Greenhouse Gas Emissions from Agricultural Management, American Chemical Society, Baltimore MD USA, pp.227-255.

Roberts, B.A., Fritschi, F.B., Horwath, W.R., Scow, K.M., Rains, W.D. and Travis, R.L., 2011. Comparisons of soil microbial communities influenced by soil texture, nitrogen fertility, and rotations. Soil Science, 176(9), pp.487-494.

Pereira, E., H. Chung, K. Scow, M. J. Sadowsky, C. van Kessel, J. Six. 2011. Soil nitrogen transformations under elevated atmospheric CO2 and O3 during the soybean growing season. Environmental Pollution 159: 401-407.

Geisseler, D., W. R. Horwath and K. M. Scow. 2011. Soil moisture and plant residue addition interact in their effect on extracellular enzyme activity. Pedobiologia 54:71-78.

Suddick, E., K. M. Scow, W. R. Horwath, L. E. Jackson, D. R. Smart, J Mitchell, J. Six 2010. The Potential for California Agricultural Crop Soils to Reduce Greenhouse Gas Emissions: A Holistic Evaluation. Advances in Agronomy 107: 123-162

Smukler, S., S. Sánchez-Moreno, S.J. Fonte, H. Ferris, K. Klonsky, A.T. O’Geen, K.M. Scow, K.L. Steenwerth, L.E. Jackson. 2010. Biodiversity and multiple ecosystem functions in an organic farmscape Agriculture, Ecosystems & Environment:139: 80-97

Drenovsky, R.E., Steenwerth, K.L., Jackson, L.E., Scow, K.M. 2010. Land use and climatic factors structure regional patterns in soil microbial communities. Global Ecology and Biogeography, 19 (1), pp. 27-39.

Kong, A.Y.Y., K. Hristova, K.M. Scow, and J. Six, 2010. Impacts of different N management regimes on nitrifier and denitrifier communities and N cycling in soil microenvironments. Soil Biol. Biochem., 42, 1523-1533

Kong, A.Y.Y., K.M. Scow, A.L. Córdova-Kreylos, W.E. Holmes, and J. Six, 2010. Microbial community composition and carbon cycling within soil microenvironments of conventional, low-input, and organic cropping systems. Soil Biol. Biochem., 43, 20-30

Son, A., I. M. Kennedy, K. M. Scow and K. R. Hristova. 2010. Quantitative gene monitoring of microbial tetracycline resistance using magnetic luminescent nanoparticles. Journal of Environmental Monitoring 12:1362-1367

Yang, J., E. Rasa, P. Tantayotai, K. M. Scow, H. Yuan and K. R. Hristova. 2010. Mathematical model of Chlorella minutissima UTEX2341 growth and lipid production under photoheterotrophic fermentation conditions. Bioresource Technology 102:3077-3081.

Kristensen^, A.H., K. Henriksen, L. Mortensen, K.M. Scow and P. Moldrup. 2010. Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface. Vadose Zone Journal 9:137-147

Drenovsky, R.E., Steenwerth, K.L., Jackson, L.E., Scow, K.M. 2010. Land use and climatic factors structure regional patterns in soil microbial communities. Global Ecology and Biogeography, 19 (1), pp. 27-39.

Holloway, J.M., Goldhaber, M.B., Scow, K.M., Drenovsky, R.E. 2009. Spatial and seasonal variations in mercury methylation and microbial community structure in a historic mercury mining area, Yolo County, California. Chemical Geology, 267 (1-2), pp. 85-95.

Dong, L., Córdova-Kreylos, A.L., Yang, J., Yuan, H., Scow, K.M. 2009. Humic acids buffer the effects of urea on soil ammonia oxidizers and potential nitrification. Soil Biology and Biochemistry, 41 (8), pp. 1612-1621.

Zornoza, R., Guerrero, C., Mataix-Solera, J., Scow, K.M., Arcenegui, V., Mataix-Beneyto, J. 2009. Changes in soil microbial community structure following the abandonment of agricultural terraces in mountainous areas of Eastern Spain. Applied Soil Ecology, 42 (3), pp. 315-323.

Cavagnaro, T.R., L.E. Jackson, K. Hristova, K.M. Scow. 2008. Short-term population dynamics of ammonia oxidizing bacteria in an agricultural soil. Applied Soil Ecology, 40 (1), pp. 13-18.

Zornoza, R., C. Guerrero, J. Mataix-Solera, K.M. Scow, V. Arcenegui, J. Mataix-Beneyto. 2008. Near infrared spectroscopy for determination of various physical, chemical and biochemical properties in Mediterranean soils. Soil Biology and Biochemistry, 40 (7), pp. 1923-1930.

Schmidt, R., Battaglia, V., Scow, K., Kane, S., Hristova, K.R. 2008. Involvement of a novel enzyme, MdpA, in methyl tert-butyl ether degradation in Methylibium petroleiphilum PM1. Applied and Environmental Microbiology, 74 (21), pp. 6631-6638.

Batten, KM, KM Scow, and EK Espeland. 2008. Soil microbial community associated with an invasive grass differentially impacts native plant communities. Microb Ecol. 55:220–228.

Nozawa-Inoue, M, M. Jien, MS Hamilton, V Stewart, KM Scow, and KR Hristova. 2008. Quantitative detection of perchlorate-reducing bacteria by real-time PCR targeting the perchlorate reductase gene. Appl Environ. Microb. 74:1941-1944.

Feris, K., Mackay, D., de Sieyes, N., Chakraborty I, Einarson M, Hristova K, Scow K. 2008. Effect of ethanol on microbial community structure and function during natural attenuation of benzene, toluene, and o-xylene in a sulfate-reducing aquifer. Environ Sci Technol. 2008 Apr 1;42(7):2289-94.

Steenwerth, K.L., R.E. Drenovsky, J.J. Lambert, D.A. Kluepfel, K.M. Scow, D.R. Smart. 2008. Soil morphology, depth and grapevine root frequency influence microbial communities in a Pinot noir vineyard. Soil Biol. Biochem 40:1330-1340

Cordova-Kreylos, AL and KM Scow, KM. 2007. Effects of ciprofloxacin on salt marsh sediment microbial communities. ISME J. 1:585-595

Danyluk, MD, M Nozawa-Inoue, KR Hristova, KM Scow, BD Lampinen and LJ Harris. 2007. Survival and growth of Salmonella Enteritidis PT 30 in almond orchard soils. J. Appl. Microbiol. 104:1391-1399.

Cavagnaro, TR, LE Jackson, KM Scow, and KR Hristova. 2007. Effects of arbuscular mycorrhizas on ammonia oxidizing bacteria in an organic farm soil. Microb. Ecol. 54:618-626.

Kane SR, Chakicherla AY, Chain PS, Schmidt R, Shin MW, Legler TC, Scow KM, Larimer FW, Lucas SM, Richardson PM, Hristova KR. 2007. Whole-genome analysis of the methyl tert-butyl ether-degrading beta-proteobacterium Methylibium petroleiphilum PM1. J Bacteriol. 189:1931-45

Hristova, K. R., Schmidt, R., Chakicherla, A. Y., Legler, T. C., Wu, J., Chain, P. S., Scow, K. M., Kane, S. R. 2007. Comparative Transcriptome Analysis of Methylibium petroleiphilum PM1 Exposed to the Fuel Oxygenates Methyl tert-Butyl Ether and Ethanol. Appl. Environ. Microbiol. 73: 7347-7357

Mackay, D. M., N. R. de Sieyes, M. D. Einarson, K. P. Feris, A. A. Pappas, I. A. Wood, L. A Jacobson, L. G. Justice, M. N. Noske, J.T. Wilson, C. Adair, and K.M. Scow. 2007. Impact of Ethanol on the Natural Attenuation of MTBE in a Normally Sulfate-Reducing Aquifer. Environmental Science & Technology 41: 2015-2021.

Mackay, D. M., N. R. de Sieyes, M. D. Einarson, K. P. Feris, A. A. Pappas, I. A. Wood, L. A Jacobson, L. G. Justice, M. N. Noske, K. M. Scow and J. T. Wilson. 2006. Impact of ethanol on the natural attenuation of benzene, toluene and o-xylene in a normally sulfate-reducing aquifer. Environmental Science & Technology 40: 6123-6130.

Bossio, DA; Fleck, JA; Scow, KM, et al. 2006. Alteration of soil microbial communities and water quality in restored wetlands. Soil Biol. Biochem. 38: 1223-1233.

Potthoff, M; Steenwerth, KL; Jackson, LE, et al. 2006. Soil microbial community composition as affected by restoration practices in California grassland. Soil Biol. Biochem. 38:1851-1860.

Cao, Y, GN Cherr, AL Cordova-Kreylos, et al. 2006. Relationships between sediment microbial communities and pollutants in two California salt marshes. Microb. Ecol. 52: 619-633.

Cavagnaro, T.R., Jackson, L.E., Six, J., Ferris, H., Goyal, S., Asami, D., and K.M. Scow. 2006. Arbuscular mycorrhizas, microbial communities, nutrient availability, and soil aggregates in organic tomato production. Plant Soil 282:209-225.

Steenwerth, K.L., Jackson, L.E., Carlise, E.A., Scow, K.M. 2006. Microbial communities of a native perennial bunchgrass do not respond consistently across a gradient of land use intensification. Soil Biology and Biochemistry. 38, 1797-1811.

Cavagnaro, T., L Jackson, & K. Scow. 2006. Climate Change: Challenges and Solutions for California Agricultural Landscapes. A Report from: California Climate Change Center. California Energy Commission. CEC-500-2005-189-SF.

Nakatsu, CH; K. Hristova, S. Hanada, X.-Y. Meng, J. R. Hanson, K. M. Scow and Y. Kamagata. 2006. Methylibium petroleiphilum gen. nov., sp. nov., a novel methyl tert-butyl ether-degrading methylotroph of the Betaproteobacteria. Int J Syst Evol Microbiol 56: 983-989

Batten, K.M., Scow, K.M., Davies, K.F., and S.P. Harrison. 2006. Two invasive plants alter soil microbial community composition in serpentine grasslands. Biological Invasions 8:217-230.

Cordova-Kreylos, A., Cao, Y., Green, P., Hwang, H., Kuivila, K.M., LaMontagne, M.G., Van de Werfhorst, L.C., Holden, P.A., and K.M. Scow. 2006. Diversity, composition, and geographical distribution of microbial communities in California salt marsh sediments. Appl. Environ. Microb. 72(5):3357-3366.

Batten, KM; Scow, KM; Davies, KF; Harrison, SP. 2006. Two invasive plants alter soil microbial community composition in serpentine grasslands. Biol. Invasions 8 (2): 217-230.

Steenwerth, KL; Jackson, LE; Calderon, FJ; Scow, KM; Rolston, DE. 2005. Response of microbial community composition and activity in agricultural and grassland soils after a simulated rainfall. Soil Biol. Biochem. 37 (12): 2249-2262.

Batten, KM; Six, J; Scow, KM; Rillig, MC. 2005. Plant invasion of native grassland on serpentine soils has no major effects upon selected physical and biological properties. Soil Biol. Biochem. 37 (12): 2277-2282

Burger, M; Jackson, LE; Lundquist, EJ; Louie, DT; Miller, RL; Rolston, DE; Scow, KM. 2005. Microbial responses and nitrous oxide emissions during wetting and drying of organically and conventionally managed soil under tomatoes. Biol. Fertil. Soils 42 (2): 109-118.

Watanabe, N; Schwartz, E; Scow, KM; Young, TM. 2005. Relating desorption and biodegradation of phenanthrene to SOM structure characterized by quantitative pyrolysis GC-MS. Environ. Sci. Technol. 39 (16): 6170-6181.

Machulla, G; Bruns, MA; Scow, KM. 2005. Microbial properties of mine spoil materials in the initial stages of soil development. Soil Sci. Soc. Amer. J. 69 (4): 1069-1077.

Nozawa-Inoue, M; Scow, KM; Rolston, DE. 2005. Reduction of perchlorate and nitrate by microbial communities in vadose soil. Appl. Environ. Microb. 71 (7): 3928-3934.

DeGrood, SH; Claassen, VP; Scow, KM. 2005. Microbial community composition on native and drastically disturbed serpentine soils. Soil Biol. Biochem. 37 (8): 1427-1435.

Scow, KM; Hicks, KA. 2005. Natural attenuation and enhanced bioremediation of organic contaminants in groundwater. Curr. Opin Biotechnol. 16 (3): 246-253.

Ingels, CA; Scow, KM; Whisson, DA; Drenovsky, RE. 2005. Effects of cover crops on grapevines, yield, juice composition, soil microbial ecology, and gopher activity. Amer. J. Vitic. Enol. 56 (1): 19-29.

Bossio, DA; Girvan, MS; Verchot, L; Bullimore, J; Borelli, T; Albrecht, A; Scow, KM; Ball, AS; Pretty, JN; Osborn, AM. 2005. Soil microbial community response to land use change in an agricultural landscape of Western Kenya. Microb. Ecol. 49 (1): 50-62.

Smith, AE; Hristova, K; Wood, I; Mackay, DM; Lory, E; Lorenzana, D; Scow, KM. 2005. Comparison of biostimulation versus bioaugmentation with bacterial strain PM1 for treatment of groundwater contaminated with methyl tertiary butyl ether (MTBE). Environ. Health Perspec. 113 (3): 317-322.

Feris, KP; Hristova, K; Gebreyesus, B; Mackay, D; Scow, KM. 2004. A shallow BTEX and MTBE contaminated aquifer supports a diverse microbial community. Microb. Ecol. 48 (4): 589-600.

Ramadan, Z; Hopke, PK; Johnson, MJ; Scow, KM. 2005. Application of PLS and Back-Propagation Neural Networks for the estimation of soil properties. Chemom. Intell. Lab. Syst. 75 (1): 23-30.

Drenovsky, RE; Vo, D; Graham, KJ; Scow, KM. 2004. Soil water content and organic carbon availability are major determinants of soil microbial community composition. Microb. Ecol. 48 (3): 424-430.

Drenovsky, RE; Elliott, GN; Graham, KJ; Scow, KM. 2004. Comparison of phospholipid fatty acid (PLFA) and total soil fatty acid methyl esters (TSFAME) for characterizing soil microbial communities. Soil Biol. Biochem. 36 (11): 1793-1800.

Pozos, N; Scow, K; Wuertz, S; Darby, J. 2004. UV disinfection in a model distribution system: biofilm growth and microbial community. Water Res. 38 (13): 3083-3091.

Drenovsky, R.E., M. P. Edwards, L. E. Gardner, K. M. Scow, A. L. Maroney, L. K. Loveless. 2004. Comparison of Soil Microbial Communities in Pinot Noir Vineyards in Carneros, Anderson, and Russian River Appellations. Amer. J. Viticul. Enol.

Moore, John C., Eric L. Berlow,, David C. Coleman, Peter C. de Ruiter, Quan Dong, Alan Hastings, Nancy Collins Johnson, Kevin S. McCann, Kim Melville, Peter J. Morin, Knute Nadelhoffer, Amy D. Rosemond, David M. Post, John L. Sabo, Kate M. Scow, Michael J. Vanni and Diana H. Wall. 2004. Detritus, trophic dynamics and biodiversity. Ecol. Letters 7:584-600.

Ferris, H., R.C. Venette, and K.M. Scow. 2004. Soil management to enhance bacterivore and fungivore nematode populations and their nitrogen mineralisation function. Applied Soil Ecology 25:19-35

Okano, Y., K.R. Hristova, C.M. Leutenegger, L.E. Jackson, R.F. Denison, B. Gebreyesus, D. Lebauer, and K.M. Scow. 2004. Application of real-time PCR to study effects of ammonium on population size of ammonia-oxidizing bacteria in soil. Appl. Environ. Microbiol. 70(2):1008-1016.

Batten K.M and K.M. Scow. 2004. Sediment microbial community composition and methylmercury pollution at four mercury mine-impacted sites. Microb. Ecol. 46:429-441

Boulton A.M., B.A. Jaffee, Scow K.M. 2003. Effects of a common harvester ant (Messor andrei) on richness and abundance of soil biota. Applied Soil Ecology. 23:257-265..

Basagaoglu H. E.E. Chung. D. Gandhi, K.M. Scow, B.J. McCoy, T.R. Ginn. 2003. Rate parameters for methyl tert-butyl ether biodegradation via a radial diffusion model. Journal of Environmental Engineering-ASCE. 129:565-570.

Tipton, D.K., D.E. Rolston, and K.M. Scow. 2003. Transport and biodegradation of perchlorate in soils. J. Environ. Qual. 32:40-46.

Johnson, M.J., K.Y. Lee, and K.M. Scow. 2003. DNA fingerprinting reveals links among agricultural crops, soil properties, and the composition of soil microbial communities. Geoderma 114:279-303.

Gamst, J., P. Moldrup, D.E. Rolston, K.M. Scow, and T. Komatsu. Napthalene adsorption kinetics and time-dependent sorption isotherm parameters for four soils. Soil Sci. Soc. Am. J.

Gamst, J., P. Moldrup, D.E. Rolston, T. Olesen, K. Scow, and T. Komatsu. 2003. Comparison of naphthalene diffusion and nonequilibrium adsorption-desorption experiments. Soil Sci. Soc. Am. J. 67:765-777.

Jackson, L.E., F.J. Calderon, K.L. Steenwerth, K.M. Scow, and D.E. Rolston. 2003. Responses of soil microbial processes and community structure to tillage events and implications for soil quality. Geoderma 114:305-317.

Hristova, K., B. Gebreyesus, D. Mackay, and K.M. Scow. 2003. Naturally occurring bacteria similar to the methyl tert-butyl ether (MTBE)-degrading strain PM1 are present in MTBE-contaminated groundwater. Appl. Environ. Microbiol. 69:2616-2623.

Steenwerth, K.L., Louise E. Jackson, Francisco J. Calderon, Mark R. Stromberg, and Kate M. Scow. 2003. Soil microbial community composition and land use history in cultivated and grassland ecosystems of coastal California. Soil Biol. Biochem. 35:489-500. Rolston, D.E., A. Felsot, K. Pennell, K.M. Scow, and H. Stroo. 2002. Fate of soil contaminants. In: Lanno, R. (ed), Contaminated Soils: From soil-chemical interactions to ecosystem management. Proceedings of Workshop on Assessing Contaminated Soils, Pellston, MI, 23-27 September 1998. Society of Environmental Toxicology and Chemistry (SETAC), Pensacola, FL, USA. Pp 147-196.

Schmidt, S.K., and K.M. Scow. 2002. Use of bioreactors and microcosms to assess the biodegradation potential of soil, 1049-1056. In: Hurst, C. (ed) Manual of Environmental Microbiology, 2nd Edition. American Society of Microbiology Press, Washington, DC.

Naas, C., R. Wilson, D. Mackay, and K.M. Scow. 2002. Investigation of spatial distribution of native aerobic MTBE degrading microorganisms: preliminary results. Contam. Soil, Sediment and Water (July/August): 76-79.

Steenwerth KL. Jackson LE. Calderon FJ. Stromberg MR. Scow KM. 2002. Soil microbial community composition and land use history in cultivated and grassland ecosystems of coastal California. Soil Biology & Biochemistry. 34:1599-1611.

Costello, A; Auman, A.; Macalady J; Scow K; Lidstrom M. Estimation of methanotroph abundance in a freshwater lake sediment. Environ. Micro 4:443-450.

Macalady JL, McMillan AM, Dickens AF, Tyler SC, Scow KM. (2002) Population dynamics of type I and II methanotrophic bacteria in rice soils. Environ Microbiol. 4: 148-57.

Gray, J.R., G. Lacrampe-Couloume, D. Gandhi, K. M. Scow, R. D. Wilson, D. M. MacKay, and B. Sherwood Lollar 2002. Carbon and hydrogen isotopic fractionation during biodegradation of methyl tert-butyl ether. Environ. Sci. Technol. 36:1931-1938.

Andrews, S.S.; Mitchell, J.P.; Mancinelli, R.; Karlen, D.L.; Hartz, T.K.; Horwath, W.R.; Pettygrove, G.S; Scow, K.M.; Munk, D.S. (2002). On-farm assessment of soil quality in California's central valley. Agron. J. 94:12-23.

Schwartz, E, S.V. Trinh, K.M. Scow, KM. 2002. Impact of methylene chloride on microorganisms and phenanthrene mineralization in soil. J. Environ. Qual. 31:144-149.

Wilson, R.D., D.M. Mackay, and K.M. Scow. 2001. In situ MTBE biodegradation supported by diffusive oxygen release. Environ. Sci. Technol. 36:190-199.

Hristova, K.R., C.M. Lutenegger, and K.M. Scow. 2001. Detection and Quantification of MTBE-degrading Strain PM1 by Real-Time TaqMan PCR. Appl. Environ. Microbiol. 67: 5154-5160.

Chen, J., H. Ferris, K.M. Scow, and K.J. Graham. 2001. Fatty acid composition and dynamics of selected fungal-feeding nematodes and fungi. Comp. Biochem. Physiol. Part B 130:135-144.

Schwartz, E., and K.M. Scow. 2001. Repeated inoculation as a strategy for the remediation of low concentrations of phenanthrene in soil. Biodegradation 12:201-207.

Calderon, FJ; L.E. Jackson; K.M. Scow; and D.E. Rolston. 2001. Short-term dynamics of nitrogen, microbial activity, and phospholipid fatty acids after tillage. Soil Sci. Soc. Amer. J. 65:118-126.

Ramadan, Z., X.H. Song, P.K. Hopke, M.J. Johnson, and K.M. Scow. 2001. Variable selection in classification of environmental soil samples for partial least square and neural network models. Anal. Chem. Acta 446:233-244.

Poudel, D.D., Ferris, H., Klonsky, K, Horwath, W.R., Scow, K.M., van Bruggen, A.H.C., Lanini, W.T, Mitchell, J.P., Temple, S.R. 2001. The sustainable agriculture farming system project in California's Sacramento Valley. Outlook on Agriculture. 30: 109-116.

Bruns, MA; Hanson, JR; Mefford, J; Scow, KM. 2001. Isolate PM1 populations are dominant and novel methyl tert-butyl ether-degrading bacteria in compost biofilter enrichments. Environ. Microbiol. 3:220-225.

Scow, K.M., E. Schwartz, M.Johnson, and J.L. Macalady. 2001. Measurement of microbial diversity. In: Encylopedia of Biodiversity. 4:177-190. Academic Press, NY.

Deeb, R.A., H.Y. Hu, J. R. Hanson, K.M. Scow, and L. Alvarez-Cohen. 2000. Substrate interactions in BTEX and MTBE mixtures by an MTBE-degrading isolate. Environ. Sci. Technol. 35:312-317.

Deeb, R.A., K.M. Scow, and L. Alvarez-Cohen. 2000. Aerobic MTBE biodegradation: An examination of past studies, current challenges and future research directions. Biodegradation 11:171-186.

Scow, K.M. 2000. Soil microbiology. In: Encyclopedia of Microbiology. Academic Press (in press).

Schwartz, E., S.V. Trinh, and K.M. Scow. 2000. Measuring growth of a phenanthrene degrading bacterial inoculum in soil with a quantitative competitive polymerase chain reaction method. FEMS Microb. Ecol. 34:1-7

Macalady, J.L., E. Mack, D. Nelson, and K.M. Scow. 2000. Sediment microbial community structure and mercury methylation in mercury-polluted Clear Lake, CA. Appl. Environ. Microbiol. 66:1479-1488.

Fitzgerald, G., K.M. Scow, and J. Hill. 2000. Fallow season straw and water management effects on methane emissions in California rice. Global Biogeochemical Cycles 14:767-776.

Calderon, F.J., L.E. Jackson, K.M. Scow, and D.E. Rolston. 2000. Microbial responses to simulated tillage in cultivated and uncultivated soils. Soil Biol. Biochem. 32:1547-1559.

El-Farhan, Y., K.M. Scow, and D.E. Rolston. 2000. Kinetics of trichloroethylene cometabolism and toluene biodegradation: model application to soil batch experiments. J. Environ. Qual. 29:778-786.

Green, C.T., and K.M. Scow. 2000. Analysis of phospholipid fatty acids (PLFA) to characterize microbial communities in aquifers. Hydrogeology J. 8:126-141.

Song, X.-H., P.K. Hopke, M.A. Bruns, K. Graham, and K. Scow. 1999. Pattern recognition of soil samples based on microbial fatty acid contents. Environ. Sci. Technol. 33: 3524-3530.

Bruns, M.A., and K.M. Scow. 1999. DNA fingerprinting as a means to identify sources of soil-derived dust: problems and potential, p. 193-205. In: Scow et al. (eds) Integrated assessment of ecosystem health. Lewis Publishers, Boca Raton, FL.

Sudarshana, P., J.R. Hanson, and K.M. Scow. 1999. Application of random amplified polymorphic DNA (RAPD) method for characterization of soil microbial communities, p. 223-231. In: Scow et al. (eds) Integrated assessment of ecosystem health. Lewis Publishers, Boca Raton, FL.

Hanson, J.R., J.L. Macalady, D. Harris, and K.M. Scow. 1999. Linking toluene degradation with specific microbial populations in soil. Appl. Environ. Microbiol. 65:5403-5408.

Hanson, J.R., C.E. Ackerman, and K.M. Scow. 1999. Biodegradation of methyl tert-butyl ether by a bacterial pure culture. Appl. Environ. Microbiol. 65:4788-4792.

Lundquist, E.J., L.E. Jackson, C. Johnson, S. Uesugi, and K.M. Scow. 1999. Rapid response of soil microbial communities from conventional, low input, and organic farming systems to a wet/dry cycle. Soil Biol. Biochem 31:1661-1675.

Lundquist, E.J., L.E. Jackson, and K.M. Scow. 1999. Wet-dry cycles affect dissolved organic carbon in two California agricultural soils. Soil Biol. Biochem 31:1031-1038.

Schwartz, E., and K.M. Scow. 1999. Using biodegradation kinetics to measure the availability of aged phenanthrene to bacteria inoculated into soil. Environ. Toxic. Chem. 18: 1742-1746.

Johnson, C.R., and K.M. Scow. 1999. Effect of nitrogen and phosphorus addition on phenanthrene biodegradation in four soils. Biodegradation 10:43-50.

Lundquist, E.J., L.E. Jackson, K.M. Scow, and C. Hsu. 1999. Changes in microbial biomass and community composition, and soil carbon and nitrogen pools after incorporation of rye into three California agricultural soils. Soil Biol. Biochem. 31:221-236.

Clark, M.S., W.R. Horwath, C. Shennan, C, K.M. Scow, W. T. Lanini, and H. Ferris. 1999. Nitrogen, weeds and water as yield-limiting factors in conventional, low-input, and organic tomato systems. Agric. Ecosyst. Environ. 73:257-270.

El-Farhan, Y.H., D.E. Rolston, and K.M. Scow. 1999. Coupling vapor transport and transformation of volatile organic chemicals, p. 235-259. In: Hopmans, J., and M. Parlange (eds.) Vadose zone hydrology; cutting across disciplines. Oxford University Press, New York.

Scow, K.M., and M.R. Werner. 1999. The soil ecology of cover cropped vineyards, p. 69-79. In: Ingels, C. (ed.) Cover cropping in vineyards. University of California Division of Agriculture and Natural Resources. Publication 3338. DANR, Oakland, CA.

Clark, M.S., W.R. Horwath, C. Shennan, and K.M. Scow. 1998. Changes in soil chemical properties resulting from organic and low-input farming practices. Agron. J. 90:662-671.

Gunapala, N., R.C. Venette, H. Ferris, and K.M. Scow. 1998. Effects of soil management history on the rate of organic matter decomposition. Soil Biol. Biochem. 30:1917-1927.

Song, X.H., P.K. Hopke, M. Bruns, D.A. Bossio, and K.M. Scow. 1998. A fuzzy adaptive resonance theory--supervised predictive mapping neural network applied to the classification of multivariate data. Chemomet. Intell. Lab. Syst. 41:161-170

Eweis, J.B., E.D. Schroeder, D.P. Chang, and K.M. Scow. 1998. Biodegradation of MTBE in a pilot-scale biofilter, p. 342-346. In: Wickramanayake, G.B. and R.E. Hinchee (eds). Natural attenuation. Chlorinated and recalcitrant compounds. Batelle Press, Columbus, Ohio.

Bossio, D.A., K. M. Scow, N. Gunapala, and K.J. Graham. 1998. Determinants of soil microbial communities: effects of agricultural management, season, and soil type on phospholipid fatty acid profiles. Microb. Ecol. 36:1-12

Gunapala, N., and K.M. Scow. 1998. Dynamics of soil microbial biomass and activity in conventional and organic farming systems. Soil Biol. Biochem. 30:805-816.

Jaffee, B.A., H. Ferris, and K.M. Scow. 1998. Nematode-trapping fungi in organic and conventional cropping systems. Phytopath. 88: 344-350.

Bossio, D.A., and K. M. Scow. 1998. Impact of carbon and flooding on PLFA profiles and substrate utilization patterns of soil microbial communities. Microb. Ecol. 35:265-278.

Macalady, J., M. Fuller, and K.M. Scow. 1998. Effects of fumigation with metam sodium on soil microbial activity and community structure. J. Environ. Qual. 27:54-63.

duPlessis, C.A., K.A. Kinney, E.D. Schroeder, D.P.Y. Chang, and K.M. Scow. 1998. Denitrification and nitric oxide reduction in an aerobic toluene-treating biofilter. Biotech. Bioeng. 58:408-415.

El-Farhan, Y.H., K.M. Scow, L.W. deJonge, D.E. Rolston, and P. Moldrup. 1998. Coupling transport and biodegradation of toluene and trichloroethylene in unsaturated soils. Water Resources Res. 34:437-445.

Fuller, M.E., and K.M. Scow. 1997. Effect of exopolymers on biodegradation of organic compounds by Pseudomonas sp. strains JSA and JS150. Microb. Ecol. 34:248-253.

Bossio, D.A., and K.M. Scow. 1997. Microbial ecology in agricultural ecosystems: impacts of management changes on the microbial community in a rice production system. Cal. Agric. 51: 33-40.

Rillig, M.C., K.M. Scow, J.N. Klironomos, and M.F. Allen. 1997. Microbial carbon-substrate utilization in the rhizosphere of Gutierrezia sarothrae grown in elevated atmospheric carbon dioxide. Soil Biol. Biochem. 29:1387-1394.

Lau, S.S., M.E. Fuller, H. Ferris, R.C. Venette, and K.M. Scow. 1997. Development and testing of an assay for soil-ecosystem health using the bacterial-feeding nematode Cruznema tripartitum. Ecotox. Environ. Safety 36:133-139.

Fuller, M.E., and K. M. Scow. 1997. Impacts of trichloroethylene (TCE) and toluene on nitrogen cycling in soil. Appl. Environ. Microbiol. 63:4015-4019.

Scow, K.M. and C.R. Johnson. 1997. Effect of sorption on biodegradation of soil pollutants. Adv. Agon. 58:1-56

Scow, K.M. 1997. Soil microbial communities and carbon flow in agroecosystems, p. 361-407. In: Jackson, L.E.(ed.) Ecology in Agriculture. Academic Press, N.Y.

Fuller, M.E., K.M. Scow, S. Lau, and H. Ferris. 1997. Trichloroethylene and toluene effects on the structure and function of the soil community. Soil Biol. Biochem.29:75-89.

Schmidt, S.K., and K.M. Scow. 1996. Use of soil bioreactors and microcosms in bioremediation research, p. 822-829. In: Hurst, C.J. (ed.) Manual of Environmental Microbiology. ASM Press, Washington, D.C.

Morgenroth, E., E.D. Schroeder, D.P.Y. Chang, and K.M. Scow. 1996. Nutrient limitation in a compost biofilter degrading hexane. J. Air & Waste Manage. Assoc. 46:300-308.

Fuller, M.E., and K.M. Scow. 1996. Effects of toluene on microbial-mediated processes involved in the soil nitrogen cycle. Microb. Ecol. 32:171-184.

Bossio, D.A., and K.M. Scow. 1995. Impact of carbon and flooding on the metabolic diversity of microbial communities in soil. Appl. Environ. Microb. 61:4043-4050.

Hoyle, B., K.M. Scow, G. Fogg, and J. Darby. 1995. Effect of carbon:nitrogen ratio on kinetics of phenol biodegradation by Acinetobacter in saturated sand. Biodegradation 6:283-293.

Fuller, M., D. Mu, and K.M. Scow. 1995. Biodegradation of trichloroethylene and toluene by indigenous microbial populations in vadose sediments. Microb. Ecol. 29:311-325.

Roßner, U., B. L. Hoyle, and K.M. Scow. 1994. Effect of carbon:nitrogen ratios on growth kinetics of Acinetobacter johnsonii metabolizing phenol in liquid and saturated sand. Proc. from Second International Conference on Ground Water Ecology, Atlanta, Georgia, March, 1994.

Scow, K.M., S. Fan, C. Johnson, and G.M. Ma 1994. Biodegradation of sorbed chemicals in soil. Environ. Health Perspec. 103:93-95.

Ergas, S.J., K. Kinney, M.E. Fuller, and K.M. Scow. 1994. Modeling and characterization of a compost biofiltration system degrading dichloromethane. Biotechnol. Bioengin.44:1048-1054

Mu, D.Y., and K.M. Scow. 1994. Effect of trichloroethylene (TCE) and toluene concentrations on TCE and toluene biodegradation and the population density of TCE and toluene degraders in soil. Appl. Environ. Microbiol. 60:2661-2665.

Temple, S.R., D.B. Friedman, O. Somasco, H. Ferris, K. Scow and K. Klonsky. 1994. An interdisciplinary, experiment station-based participatory comparison of alternative crop management systems for California's Sacramento Valley. Amer. J. Altern. Agric. 9:64-71.

Scow, K.M., O. Somasco, N. Gunapala, S. Lau, R. Venette, H. Ferris, R. Miller, and C. Shennan. 1994. Changes in soil fertility and biology during the transition from conventional to low-input and organic farming systems. Calif. Agric. 48:20-26.

Fan, S., and K.M. Scow. 1993. Biodegradation of TCE and toluene by indigenous microbial populations in soil. Appl. Environ. Microbiol. 59:1911-1918.

Chung, G.-Y., B.J. McCoy, and K.M. Scow. 1993. Criteria to assess when biodegradation is kinetically limited by intraparticle diffusion and sorption. Biotechnol. and Bioeng. 41:625-632.

Scow, K.M. 1993. Effect of sorption-desorption and diffusion processes on the kinetics of biodegradation of organic chemicals in soil, pp 73-114. In: Linn, D. (ed.) Sorption and Degradation of Pesticides and Organic Chemicals in Soil. Soil Science Society of America Special Publication 32, Madison WI.

Scow, K. M., and J. Hutson. 1992. Effect of diffusion and sorption on the kinetics of biodegradation: theoretical considerations. Soil Sci. Soc. Amer. J. 56:119-127.

Scow, K. M., and M. Alexander. 1992. Effect of diffusion and sorption on the kinetics of biodegradation: experimental results with synthetic aggregates. Soil Sci. Soc. Amer. J. 56:128-134.

Scow, K. M., R. R. Merica, and M. Alexander. 1990. Kinetic analysis of enhanced biodegradation of carbofuran. J. Agric. Food Chem. 38: 908-912.

Scow, K. M., D. M. Li, V. B. Manilal, and M. Alexander. 1990. Mineralization of organic compounds at low concentrations by filamentous fungi. Mycol. Res. 94: 793-798.

Scow, K. M., S. K. Schmidt, and M. Alexander. 1989. Kinetics of biodegradation of mixtures of substrates in soil. Soil Biol. Biochem. 21: 703-708.

Alexander, M. and K. M. Scow. 1989. Kinetics of biodegradation in soil, p. 243-269. In. B. L. Sawhney and K. Brown (ed.) Reactions and movement of organic chemicals in soil. Soil Science Society of America Special Symposium Publication 22, Madison, WI.

Schmidt, S. K., K. M. Scow, and M. Alexander. 1987. Kinetics of p-nitrophenol mineralization by a Pseudomonas sp.: effects of second substrates. Appl. Environ. Microbiol. 53: 2617-2623.

Scow, K.M. 1987. Modeling biodegradation in soil. ICET News 3: 2-3. (Institute for Comparative and Environmental Toxicology, Cornell University, Ithaca, N.Y.).

Scow, K. M., S. Simkins, and M. Alexander. 1986. Kinetics of mineralization of organic compounds at low concentrations in soil. Appl. Environ. Microbiol. 51: 1028-1035.

Schmidt, S. K., and K. M. Scow. 1986. Mycorrhizal fungi on the Galapagos Islands. Biotropica 18: 236-240.

Fiksel, J., and K. M. Scow. 1983. The assessment of human exposure and health risks using outputs of environmental fate models, p. 287-307. In: R.L. Swann, and A. Eschenroeder (ed.) Fate of chemicals in the environment. A.C.S. Symp. Series 255. American Chemical Society, Washington, D.C.

Scow, K. M. 1982. Rate of biodegradation, p. 9-1 to 9-85, In: W.J. Lyman, W.F. Reehl, and D.H. Rosenblatt (ed.) Handbook of chemical property estimation methods. McGraw Hill Book Co., New York.

Brown, F. A., Jr., and K. M. Scow. 1978. Magnetic induction of a circadian cycle in hamsters. J. Interdiscip. Cycle Res. 9: 137-145.

Wemmer, C., and K. Scow. 1977. Communication in the Felidae with emphasis on scent marking and contact patterns, p. 749-766. In: T. Sebeok (ed.) How animals communicate. Indiana University Press, Bloomington.

Wemmer, C., M. Von Ebers, and K. Scow. 1976. An analysis of the chuffing vocalization in the polar bear. J. Zool., Lond. 180: 425-439.

Books

Scow, K.M., G.E. Fogg, D.E. Hinton, and M.L. Johnson (editors). 1999. Integrated assessment of ecosystem health