KBS LTER Publications

Publications associated with KBS LTER. Click on the pdf link to get open access papers or to sign-in (free and immediate) to get other papers. Click on the data link to get formally published datasets (other datasets available as noted within the publications). Other ways to view KBS LTER publications can be accessed by the Research | Publications menu above.

Publications are also available on our Google Scholar page

2024

Naasko, K., T. Martin, C. Mammana, J. Murray, M. Mann, and C. Sprunger. 2024. Soil protein: A key indicator of soil health and nitrogen management. Soil Science Society of America Journal 88:89-108.

2023

Arnold, M. B., M. Back, M. D. Crowell, N. Farooq, P. Ghimire, O. A. Obarein, K. E. Smart, T. Taucher, E. VanderJeugdt, K. I. Perry, D. A. Landis, and C. A. Bahlai. 2023. Coexistence between similar invaders: The case of two cosmopolitan exotic insects. Ecology 104:e3979.

Curtright, A. J. and L. K. Tiemann. 2023. Chemical identity of carbon substrates drives differences in denitrification and N2O reduction within agricultural soils. Soil Biology and Biochemistry 184:109078.

Liptzin, D., E. L. Rieke, S. B. Cappellazzi, G. M. Bean, M. Cope, K. L. Greub, C. E. Norris, P. W. Tracy, E. Aberle, A. Ashworth, O. B. Tavarez, A. I. Bary, R. L. Baumhardt, A. B. Gracia, D. C. Brainard, J. R. Brennan, D. B. Reyes, D. Bruhjell, C. N. Carlyle, J. J. Crawford, C. F. Creech, S. W. Culman, B. Deen, C. J. Dell, J. D. Derner, T. F. Ducey, S. W. Duiker, R. S. Dungan, M. F. Dyck, B. H. Ellert, M. H. Entz, A. E. Solorio, S. J. Fonte, S. Fonteyne, A. Fortuna, J. L. Foster, L. M. Fultz, A. V. Gamble, C. M. Geddes, D. Griffin-LaHue, J. H. Grove, S. K. Hamilton, X. Hao, Z. D. Hayden, N. Honsdorf, J. A. Howe, J. A. Ippolito, G. A. Johnson, M. A. Kautz, N. R. Kitchen, S. Kumar, K. S. Kurtz, F. J. Larney, K. L. Lewis, M. Liebman, A. L. Ramirez, S. Machado, B. Maharjan, M. A. Gamiño, W. E. May, M. P. McClaran, M. D. McDaniel, N. Millar, J. P. Mitchell, A. D. Moore, P. A. Moore Jr, M. M. Gutiérrez, K. A. Nelson, E. C. Omondi, S. L. Osborne, L. O. Alcalá, P. Owens, E. M. Pena-Yewtukhiw, H. J. Poffenbarger, B. P. Lira, J. R. Reeve, T. M. Reinbott, M. S. Reiter, E. L. Ritchey, K. L. Roozeboom, Y. Rui, A. Sadeghpour, U. M. Sainju, G. R. Sanford, W. F. Schillinger, R. R. Schindelbeck, M. E. Schipanski, A. J. Schlegel, K. M. Scow, L. A. Sherrod, A. L. Shober, S. S. Sidhu, E. S. Moya, M. S. Luce, J. S. Strock, A. E. Suyker, V. R. Sykes, H. Tao, A. T. Campos, L. L. Van Eerd, H. M. van Es, N. Verhulst, T. J. Vyn, Y. Wang, D. B. Watts, D. L. Wright, T. Zhang, C. L. Morgan, and C. W. Honeycutt. 2023. An evaluation of nitrogen indicators for soil health in long-term agricultural experiments. Soil Science Society of America Journal 87:868-884.

2022

Dangal, S. R., C. Schwalm, M. A. Cavigelli, H. T. Gollany, V. L. Jin, and J. Sanderman. 2022. Improving soil carbon estimates by linking conceptual pools against measurable carbon fractions in the DAYCENT Model Version 4.5. Journal of Advances in Modeling Earth Systems 14:e2021MS002622.

Liptzin, D., C. E. Norris, S. B. Cappellazzi, G. M. Bean, M. Cope, K. L. Greub, E. L. Rieke, P. W. Tracy, E. Aberle, A. Ashworth, O. Bañuelos Tavarez, A. I. Bary, R. L. Baumhardt, A. Borbón Gracia, D. C. Brainard, J. R. Brennan, D. Briones Reyes, D. Bruhjell, C. N. Carlyle, J. J. Crawford, C. F. Creech, S. W. Culman, B. Deen, C. J. Dell, J. D. Derner, T. F. Ducey, S. W. Duiker, M. F. Dyck, B. H. Ellert, M. H. Entz, A. Espinosa Solorio, S. J. Fonte, S. Fonteyne, A. Fortuna, J. L. Foster, L. M. Fultz, A. V. Gamble, C. M. Geddes, D. Griffin-LaHue, J. H. Grove, S. K. Hamilton, X. Hao, Z. D. Hayden, N. Honsdorf, J. A. Howe, J. A. Ippolito, G. A. Johnson, M. A. Kautz, N. R. Kitchen, S. Kumar, K. S. Kurtz, F. J. Larney, K. L. Lewis, M. Liebman, A. Lopez Ramirez, S. Machado, B. Maharjan, M. A. Martinez Gamiño, W. E. May, M. P. McClaran, M. D. McDaniel, N. Millar, J. P. Mitchell, A. D. Moore, P. A. Moore, M. Mora Gutiérrez, K. A. Nelson, E. C. Omondi, S. L. Osborne, L. Osorio Alcalá, P. Owens, E. M. Pena-Yewtukhiw, H. J. Poffenbarger, B. Ponce Lira, J. R. Reeve, T. M. Reinbott, M. S. Reiter, E. L. Ritchey, K. L. Roozeboom, Y. Rui, A. Sadeghpour, U. M. Sainju, G. R. Sanford, W. F. Schillinger, R. R. Schindelbeck, M. E. Schipanski, A. J. Schlegel, K. M. Scow, L. A. Sherrod, A. L. Shober, S. S. Sidhu, E. Solís Moya, M. St Luce, J. S. Strock, A. E. Suyker, V. R. Sykes, H. Tao, A. Trujillo Campos, L. L. Van Eerd, H. van Es, N. Verhulst, T. J. Vyn, Y. Wang, D. B. Watts, D. L. Wright, T. Zhang, C. L. Morgan, and C. W. Honeycutt. 2022. An evaluation of carbon indicators of soil health in long-term agricultural experiments. Soil Biology and Biochemistry 172:108708.

Martin, T. and C. Sprunger. 2022. Sensitive measures of soil health reveal carbon stability across a management intensity and plant biodiversity gradient. Frontiers in Soil Science 2:917885.

Rieke, E. L., D. K. Bagnall, C. L. Morgan, K. D. Flynn, J. A. Howe, K. L. Greub, G. Mac Bean, S. B. Cappellazzi, M. Cope, D. Liptzin, C. E. Norris, P. W. Tracy, E. Aberle, A. Ashworth, O. Bañuelos Tavarez, A. I. Bary, R. L. Baumhardt, A. Borbón Gracia, D. C. Brainard, J. R. Brennan, D. Briones Reyes, D. Bruhjell, C. N. Carlyle, J. J. Crawford, C. F. Creech, S. W. Culman, B. Deen, C. J. Dell, J. D. Derner, T. F. Ducey, S. W. Duiker, M. F. Dyck, B. H. Ellert, M. H. Entz, A. Espinosa Solorio, S. J. Fonte, S. Fonteyne, A. Fortuna, J. L. Foster, L. M. Fultz, A. V. Gamble, C. M. Geddes, D. Griffin-LaHue, J. H. Grove, S. K. Hamilton, X. Hao, Z. D. Hayden, N. Honsdorf, J. A. Ippolito, G. A. Johnson, M. A. Kautz, N. R. Kitchen, S. Kumar, K. S. Kurtz, F. J. Larney, K. L. Lewis, M. Liebman, A. Lopez Ramirez, S. Machado, B. Maharjan, M. A. Martinez Gamiño, W. E. May, M. P. McClaran, M. D. McDaniel, N. Millar, J. P. Mitchell, A. D. Moore, P. A. Moore, M. Mora Gutiérrez, K. A. Nelson, E. C. Omondi, S. L. Osborne, L. Osorio Alcalá, P. Owens, E. M. Pena-Yewtukhiw, H. J. Poffenbarger, B. Ponce Lira, J. R. Reeve, T. M. Reinbott, M. S. Reiter, E. L. Ritchey, K. L. Roozeboom, Y. Rui, A. Sadeghpour, U. M. Sainju, G. R. Sanford, W. F. Schillinger, R. R. Schindelbeck, M. E. Schipanski, A. J. Schlegel, K. M. Scow, L. A. Sherrod, A. L. Shober, S. S. Sidhu, E. Solís Moya, M. St. Luce, J. S. Strock, A. E. Suyker, V. R. Sykes, H. Tao, A. Trujillo Campos, L. L. Van Eerd, H. M. van Es, N. Verhulst, T. J. Vyn, Y. Wang, D. B. Watts, D. L. Wright, T. Zhang, and C. W. Honeycutt. 2022. Evaluation of aggregate stability methods for soil health. Geoderma 428:116156.

2021

Liang, D. and G. P. Robertson. 2021. Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity. Global Change Biology 27:5599-5613.

Liang, D. and G. P. Robertson. 2021. Data from: Nitrification is a minor source of nitrous oxide (N2O) in an agricultural landscape and declines with increasing management intensity. Dryad, Dataset doi: 10.5061/dryad.37pvmcvkz

2020

Bahlai, C. A. and E. F. Zipkin. 2020. The Dynamic Shift Detector: An algorithm to identify changes in parameter values governing populations. PLOS Computational Biology 16:e1007542.

Benucci, G. M., B. Rennick, and G. Bonito. 2020. Patient propagules: Do soil archives preserve the legacy of fungal and prokaryotic communities? PLOS ONE 15:e0237368.

Liang, D., O. Yang, L. Tiemann, and G. P. Robertson. 2020. Data from: Niche differentiation of bacterial versus archaeal soil nitrifiers induced by ammonium inhibition along a management gradient. Dryad, Dataset https://doi.org/10.5061/dryad.573n5tb5w.

Liang, D., Y. Ouyang, L. K. Tiemann, and G. P. Robertson. 2020. Niche differentiation of bacterial versus archaeal soil nitrifiers induced by ammonium inhibition along a management gradient. Frontiers in Microbiology 11:568588.

Poe, J., D. E. Reed, M. Abraha, J. Chen, K. M. Dahlin, and A. R. Desai. 2020. Geospatial coherence of surface-atmosphere fluxes in the upper Great Lakes region. Agricultural and Forest Meteorology 295:108188.

2019

Griffin, S. R. 2019. Restoring wild bees across fragmented landscapes. Dissertation, Michigan State University, East Lansing, MI.

Liang, D. 2019. Microbial sources of nitrous oxide emissions from diverse cropping systems. Dissertation, Michigan State University, East Lansing MI.

Shcherbak, I. and G. P. Robertson. 2019. Data from: Nitrous oxide (N2O) from subsurface soils of agricultural ecosystems. Dryad Digital Repository. https://doi.org/10.5061/dryad.c6c4bt8.

Shcherbak, I. and G. P. Robertson. 2019. Nitrous oxide (N2O) emissions from subsurface soils of agricultural ecosystems. Ecosystems 22:1650-1663.

2017

Calderón, F. J., S. Culman, J. Six, A. J. Franzluebbers, M. Schipanski, J. Beniston, S. Grandy, and A. Y. Kong. 2017. Quantification of soil permanganate oxidizable C (POXC) using infrared spectroscopy. Soil Science Society of America Journal 81:277-288.

2016

Gelfand, I., I. Shcherbak, N. Millar, A. N. Kravchenko, and G. P. Robertson. 2016. Long-term nitrous oxide fluxes in annual and perennial agricultural and unmanaged ecosystems in the upper Midwest USA. Global Change Biology 22:3594-3607.

Hermann, S. L., S. Xue, L. Rowe, E. Davidson-Lowe, A. Myers, B. Eshchanov, and C. A. Bahlai. 2016. Thermally moderated firefly activity is delayed by precipitation extremes. Royal Society Open Science 3:160712 .

2015

Bahlai, C. A., M. Colunga-Garcia, S. H. Gage, and D. A. Landis. 2015. The role of exotic ladybeetles in the decline of native ladybeetle populations: evidence from long-term monitoring. Biological Invasions 17:1005-1024.

Kravchenko, A. N. and G. P. Robertson. 2015. Statistical challenges in analyses of chamber-based soil CO2 and N2O emissions data. Soil Science Society of America Journal 79:200-211.

2014

Syswerda, S. P. and G. P. Robertson. 2014. Ecosystem services along a management gradient in Michigan (USA) cropping systems. Agriculture, Ecosystems and Environment 189:28-35.

2013

Bahlai, C. A., M. Colunga-Garcia, S. H. Gage, and D. A. Landis. 2013. Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions. PLoS ONE 8:e83407.

Gelfand, I., R. Sahajpal, X. Zhang, C. R. Izaurralde, K. L. Gross, and G. P. Robertson. 2013. Sustainable bioenergy production from marginal lands in the US Midwest. Nature 493:514-517.

Shcherbak, I. 2013. Production and movement of N2O in the full soil profile. Dissertation, Michigan State University, East Lansing, Michigan, USA.

2012

Culman, S. W., S. S. Snapp, M. E. Schipanski, M. A. Freeman, L. E. Beniston, L. E. Drinkwater, A. J. Franzluebbers, J. D. Glover, A. S. Grandy, R. Lal, J. Lee, J. E. Maul, S. B. Mirsky, J. Six, J. T. Spargo, and M. M. Wander. 2012. Permanganate oxidizable carbon reflects a processed soil fraction that is sensitive to management. Soil Science Society of America Journal 76:494-505.

Syswerda, S. P., B. Basso, S. K. Hamilton, J. B. Tausig, and G. P. Robertson. 2012. Long-term nitrate loss along an agricultural intensity gradient in the Upper Midwest USA. Agriculture, Ecosystems and Environment 149:10-19.

2011

Kravchenko, A. N. and G. P. Robertson. 2011. Whole-profile soil carbon stocks: The danger of assuming too much from analyses of too little. Soil Science Society of America Journal 75:235-240.

Syswerda, S. P., A. T. Corbin, D. L. Mokma, A. N. Kravchenko, and G. P. Robertson. 2011. Agricultural management and soil carbon storage in surface vs. deep layers. Soil Science Society of America Journal 75:92-101.

2010

Brewer, M. J. and T. Noma. 2010. Habitat affinity of resident natural enemies of the invasive <i>Aphis glycines</i> (Hemiptera: Aphididae), on soybean, with comments on biological control. Journal of Economic Entomology 103:583-596.

Gelfand, I., S. S. Snapp, and G. P. Robertson. 2010. Energy efficiency of conventional, organic, and alternative cropping systems for food and fuel at a site in the U.S. Midwest. Environmental Science and Technology 44:4006-4011.

Morales, S. E., T. F. Cosart, and W. E. Holben. 2010. Bacterial gene abundances as indicators of greenhouse gas emission in soils. The ISME Journal 4:799-808.

Morris, S. J., R. Conant, N. Mellor, E. Brewer, and E. A. Paul. 2010. Controls on soil carbon sequestration and dynamics: Lessons from land-use change. Journal of Nematology 42:78-83.

2009

Joo, W. 2009. Environmental acoustics as an ecological variable to understand the dynamics of ecosystems. Dissertation, Michigan State University, East Lansing, Michigan, USA.

Syswerda, S. P. 2009. Ecosystem services from agriculture across a management intensity gradient in Southwest Michigan. Dissertation, Michigan State University, East Lansing, MI, USA.

2008

Masiello, C. A., M. E. Gallagher, J. T. Randerson, R. M. Deco, and O. A. Chadwick. 2008. Evaluating two experimental approaches for measuring ecosystem carbon oxidation state and oxidative ratio. Journal of Geophysical Research 113:G03010.

Subramanian, S. K. 2008. Effect of topography and soil properties on spatial variability of soil carbon (C) sequestration in different crop management systems of a long-term experiment. Dissertation, Michigan State University, East Lansing, MI, USA.

2007

Grandy, A. S. and G. P. Robertson. 2007. Land-use intensity effects on soil organic carbon accumulation rates and mechanisms. Ecosystems 10:59-74.

Hamilton, S. K., A. L. Kurzman, C. Arango, L. Jin, and G. P. Robertson. 2007. Evidence for carbon sequestration by agricultural liming. Global Biogeochemical Cycles 21:GB2021.

2006

Butler, R., M. Servilla, S. Gage, J. Basney, V. Welch, B. Baker, T. Fleury, P. Duda, D. Gehrig, M. Bletzinger, J. Tao, and D. M. Freemon. 2006. Cyberinfrastructure for the analysis of ecological acoustic sensor data: A use case study in grid deployment. Cluster Computing 10:301-310.

Kosola, K. R., D. Parry, and B. A. Workmaster. 2006. Responses of condensed tannins in poplar roots to fertilization and gypsy moth defoliation. Tree Physiology 26:1607-1611.

Kravchenko, A. N., G. P. Robertson, S. S. Snapp, and A. J. Smucker. 2006. Using information about spatial variability to improve estimates of total soil carbon. Agronomy Journal 98:823-829.

Kurzman, A. L. 2006. Changes in major solute chemistry as water infiltrates soils: comparisons between managed agroecosystems and unmanaged vegetation. Ph.D. Dissertation, Michigan State University, East Lansing, Michigan, USA.

2005

Grandy, A. S. 2005. Ecosystem consequences of soil aggregation following soil disturbance. Ph.D. Dissertation, Michigan State University, East Lansing, Michigan, USA.

Robertson, G. P. and S. M. Swinton. 2005. Reconciling agricultural productivity and environmental integrity: A grand challenge for agriculture. Frontiers in Ecology and the Environment 3:38-46.

2004

De Gryze, S., J. Six, K. Paustian, S. J. Morris, E. A. Paul, and R. Merckx. 2004. Soil organic carbon pool changes following land use conversions. Global Change Biology 10:1120-1132.

Ebert-May, D., K. S. Williams, E. P. Weber, J. Hodder, and D. Luckie. 2004. Practicing scientific inquiry: What are the rules? Frontiers in Ecology and the Environment 2:492-493.

Kosola, K. R., D. M. Durall, G. P. Robertson, D. I. Dickmann, D. Parry, C. A. Russell, and E. A. Paul. 2004. Resilience of mycorrhizal fungi on defoliated and fertilized hybrid poplars. Canadian Journal of Botany 82:671-680.

Russell, C. A., K. R. Kosola, E. A. Paul, and G. P. Robertson. 2004. Nitrogen cycling in poplar stands defoliated by insects. Biogeochemistry 68:365-381.

Scriber, J. M. 2004. Non-target impacts of forest defoliator management options: Decision for no spraying may have worse impacts on non-target Lepidoptera that Bacillus thuringiensis insecticides. Journal of Insect Conservation 8:241-261.

2003

Buckley, D. H. and T. M. Schmidt. 2003. Diversity and dynamics of microbial communities in soils from agro-ecosystems. Environmental Microbiology 5:441-452.

McKeown, C. H. 2003. Quantifying the roles of competition and niche separation in native and exotic cocconellids, and the changes in the community in response to an exotic prey species. MS. Thesis, Michigan State University, East Lansing, Michigan, USA.

2002

Agrawal, A. A., K. R. Kosola, and D. Parry. 2002. Gypsy moth defoliation and N fertilization affect hybrid poplar regeneration following coppicing. Canadian Journal of Forest Research 32:1491-1495.

Kosola, K. R., D. I. Dickmann, and D. Parry. 2002. Carbohydrates in individual poplar fine roots- effects of root age and defoliation. Tree Physiology 22:741-746.

2001

Buckley, D. H. and T. M. Schmidt. 2001. Environmental factors influencing the distribution of rRNA from Verrucomicrobia in soil. FEMS Microbial Ecology 35:105-112.

Daroub, S., B. G. Ellis, and G. P. Robertson. 2001. Effect of cropping and low-chemical input systems on soil phosphorus fractions. Soil Science 166:281-291.

Kosola, K. R., D. I. Dickmann, E. A. Paul, and D. Parry. 2001. Repeated insect defoliation effects on growth, nitrogen aquisition, carbohydrates and root demography of poplars. Oecologia 129:65-74.

2000

Parry, D. 2000. Induced responses of poplars to defoliation and their effects on leaf-feeding Lepidoptera. Ph.D. Dissertation, Michigan State University, East Lansing, Michigan, USA.

Phillips, C. J., E. A. Paul, and J. I. Prosser. 2000. Quantitative analysis of ammonia oxidising bacteria using competitive PCR. FEMS Microbial Ecology 32:167-175.

Phillips, C. J., D. Harris, S. L. Dollhopf, K. L. Gross, J. I. Prosser, and E. A. Paul. 2000. Effects of agronomic treatments on the structure and function of ammonia oxidizing communities. Applied Environmental Microbiology 66:5410-5418.

Robertson, G. P., E. A. Paul, and R. R. Harwood. 2000. Greenhouse gases in intensive agriculture: Contributions of individual gases to the radiative forcing of the atmosphere. Science 289:1922-1925.

Stoyan, H., H. De-Polli, S. Bohm, G. P. Robertson, and E. A. Paul. 2000. Spatial heterogeneity of soil respiration and related soil properties at the plant scale. Plant and Soil 222:203-214.

1999

Kosola, K. R. 1999. Laparascopic sampling of roots of known age from an expandable-wall minirhizotron system. Agronomy Journal 91:876-879.

Paul, E. A., D. Harris, H. P. Collins, U. Schulthess, and G. P. Robertson. 1999. Evolution of CO2 and soil carbon dynamics in biologically managed, row-crop agroecosystems. Applied Soil Ecology 11:53-65.

Scriber, J. M., K. Weir, D. Parry, and J. Deering. 1999. Using hybrid and backcross larvae of Papilio canadensis and Papilio glaucus to detect induced phytochemical resistance in hybrid poplar trees experimentally defoliated by gypsy moths. Entomologia Experimentalis et Applicata 91:233-236.

1998

Colunga-Garcia, M. and S. H. Gage. 1998. Arrival, establishment, and habitat use of the multicolored Asian lady beetle Harmonia axyridis (Pallas) (Coleoptera) in a Michigan landscape. Environmental Entomology 27:1574-1580.

Kellndorfer, J. M., L. E. Pierce, M. C. Dobson, and F. T. Ulaby. 1998. Toward consistent regional-to-global-scale vegetation characterization using orbital SAR systems. IEEE Transactions on Geoscience and Remote Sensing 36:1396-1411.

Marino, P. C. and K. L. Gross. 1998. Competitive effects of conspecific and herbaceous (weeds) plants on growth and branch architecture of Populus x euramericana cv. Eugenei. Canadian Journal of Forest Research 28:359-367.

1997

Clark, M. S., S. H. Gage, and J. R. Spence. 1997. Habitats and management associated with common ground beetles Coleoptera: Carabidae in a Michigan agricultural landscape. Environmental Entomology 26:519-527.

Rettig, J. E., R. C. Fuller, A. L. Corbett, and T. Getty. 1997. Fluctuating asymmetry indicates levels of competition in an even-aged poplar clone. Oikos 80:123-127.

Robertson, G. P., K. M. Klingensmith, M. J. Klug, E. A. Paul, J. R. Crum, and B. G. Ellis. 1997. Soil resources, microbial activity, and primary production across an agricultural ecosystem. Ecological Applications 7:158-170.

1996

Horwath, W. R., E. A. Paul, D. Harris, J. Norton, L. Jagger, and K. A. Horton. 1996. Defining a realistic control for the chloroform fumigation incubation method using microscopic counting and 14C substrates. Canadian Journal of Soil Science 76:459-467.

Thorn, R. G., C. A. Reddy, D. Harris, and E. A. Paul. 1996. Isolation of saprophytic basidiomycetes from soil. Applied and Environmental Microbiology 62:4288-4292.

1995

Paustian, K., E. T. Elliot, H. P. Collins, C. V. Cole, and E. A. Paul. 1995. Use of a network of long-term experiments for analysis of soil carbon dynamics and global change: the North American model. Australian Journal of Experimental Agriculture 35:929-939.

Robertson, G. P. and D. W. Freckman. 1995. The spatial distribution of nematode trophic groups across a cultivated ecosystem. Ecology 76:1425-1432.

1994

Horwath, W. R., K. S. Pregitzer, and E. A. Paul. 1994. 14C allocation in tree soil-systems. Tree Physiology 14:1163-1176.

1993

Freckman, D. W. and C. H. Ettema. 1993. Assessing nematode communities in agroecosystems of varying human intervention. Agriculture, Ecosystems and Environment 45:239-261.

Mokma, D. L. and J. A. Doolittle. 1993. Mapping some loamy alfisols in southwestern Michigan using ground-penetrating radar. Soil Survey Horizons 34:71-77.

1992

Maas, K. G. 1992. The effects of planting density and weed control on the partitioning of nitrogen and carbon in a hybrid poplar plantation. M.Sc. Thesis, Michigan State University, East Lansing, Michigan, USA.

Maredia, K. M., S. H. Gage, D. A. Landis, and M. J. Scriber. 1992. Habitat use patterns by the seven-spotted lady beetle (Coleoptera: coccinellidae) in a diverse agricultural landscape. Biological Control 2:159-165.

1989

Gross, K. L. and K. A. Renner. 1989. A new method for estimating seed numbers in the soil. Weed Science 37:836-839.