Abbott, L.K. and A.D. Robson (1994) The impact of agricultural practices on mycorrhizal fungi. In: C.E. Pankhurst, B.M. Doube, V.V.S.R. Gupta and P.R. Grace (eds.), Soil Biota: Management in sustainable farming systems. CSIRO, East Melbourne, Australia. pp. 88-95.

Alabouvette, C. (1999) Soil-borne plant pathogens: Prospects for disease management. In:  J.O.

Allen, E.B., M.F. Allen, D.J. Helm, J.M. Trappe, R. Molina and E. Rincon (1995) Patterns and regulation of mycorrhizal plant and fungal diversity. Plant Soil 170, 47-62.

Altieri, M.A. (1995) Escaping the treadmill: Agro-ecology puts synergy to work to create self-sustaining "agro-ecosystems". Ceres  154.

Altieri, M.A. (1999) The ecological role of biodiversity in agroecosystems. Agric. Ecosystems Environ. 74, 19-31.

American Society of Agronomy (ASA) (1992) Mycorrhizae in Sustainable Agriculture ASA Special Pulbications number 54.

Anderson, J.M. (1994) Functional attributes of biodiversity in land use systems. In: D.J. Greenland and I. Szabolcs (eds.), Soil resilience and sustainable land use, CAB International, Wallingford, U.K. pp. 267-290.

Anderson, J.M. (1995) Soil organisms as engineers: Microsite modulation of macroscale processes. In: C.G. Jones and J.H. Lawton (eds.), Linking species and ecosystems. Chapman and Hall, New York, USA. pp. 94-106.

Artursson, V., Finlay, R.D. and Jansson, J.K. (2006) Interactions between arbuscular mycorrhizal fungi and bacteria and their potential for stimulating plant growth. Environmental Microbiology 8, 1-10.

Asshoff, R., Scheu, S and Eisenhauer (2010) Different earthworm ecological groups interactively impact seedling establishment. European Journal of Soil Biology 46, 330-334.

Baldani, J.I., M.S. de Azevedo, V.M. Reis, K.R. dos S. Teixeira, F.L. Olivares, S.R. Goi, V.L.D. Baldani and J. Döbereiner (1999) Fixação biológica de nitrogênio em gramíneas: Avanços e aplicações. In: J.O. Siqueira, F.M.S. Moreira, A.S. Lopes, L.R.G. Guilherme, V. Faquin, A.E. Furtani Neto and J.G. Carvalho (eds.), Inter-relação fertilidade, biologia do solo e nutrição de plantas. UFLA, Lavras, Brasil. pp. 621-666.

Barrios, E (2007) Soil biota, ecosystem services and land productivity. Ecological Economics, 64, 269-285.

Barros, M.E. (1999) Effet de la macrofaune sur la structure et les processus phisiques du sol de pâturages dégradés d’amazonie. PhD Thesis, Université Paris VI, Paris, France.

Bater, J.E. (1996) Micro- and macro-arthropods. In: G.S. Hall (ed.), Methods for the examination of organismal diversity in soils and sediments. CAB International, Wallingford, U.K. pp. 163-174.

Bennack, D., Brown, G., Bunning, S. and Hungria da Cunha, M. (2002). Soil biodiversity management for sustainable and productive agriculture: lessons from case studies. Food and Agriculture Organization of the United Nations, Rome, October 2002

Bernhard, A. (2010) The Nitrogen Cycle: Processes, Players, and Human Impact. Nature Education Knowledge 2(2):12,
www.nature.com/scitable/knowledge/library/the-nitrogen-cycle-processes-players-and-human-15644632

Berner, D.K., Schaad, N.W. and Volksch, B. (1999) Use of Ethylene Producing Bacteria for Stimulation of Striga spp. Seed Germination. Biological Control, 15, 274-282.

Bertaux, J. Schmid, M. Prevost-Boure, N.C., Churin, J.L, Hartmann, A, Garbaye, J. and Fey-Klett, P. (2003) In situ identification of intracellular bacteria related to Paenibacillus spp. in the mycelium of the ectomycorrhizal fungus Laccaria bicolour S238N. Applied and Environmental Microbiology 69, 4243-4248.

Bianchi , A and Bianchi, M (1995) Bacterial Diversity and Ecosystem Maintenance: An Overview. In “Microbial Diversity and  Ecosystem Function” (Eds D. Allsopp, R.R. Colwell, & D.L. Hawksworth), CAB International, pp. 185-198.

Breitbart, M. and Rohwer, F. (2005) Here a virus, there a virus, everywhere the same virus? Trends in Microbiology, 13 (6) 278-284.

Brune, A. (2007) Woodworker’s diggers. Nature 450, 487-488.

Brussaard, L., V.M. Behan-Pelletier, D.E. Bignell, V.K. Brown, W. Didden, P. Folgarait, C. Chaban, B., Ng, S.Y. and Jarell, K.F. (2006) Archael habitats – from the extreme to the ordinary. Canadian Journal of Microbiology 52, 73-116.

Campbell, R (1983) Microbial Ecology Blackwell Scientific Publications, Oxford.

Chaban, B., Ng, S.Y. and Jarell, K.F. (2006) Archael habitats – from the extreme to the ordinary. Canadian J. Microbiology 52, 73-116.

Chauvel, A., M. Grimaldi, E. Barros, E. Blanchart, M. Sarrazin and P. Lavelle (1999) Pasture degradation by an Amazonian earthworm. Nature 389, 32-33.

Chen, Y., R. Mei, S. Lu, L. Liu and J.W. Kloepper (1993) The use of yield increasing bacteria (YIB) as plant growth-promoting rhizobacteria in chinese agriculture. In: V.K. Gupta and R. Utkehde (eds.), Management of soilborne disease. M/S Narosa Publishing House, New Delhi, India. pp.

Cook, R.J. (1989) Biological control and holistic plant-health care in agriculture. America. Journal of Alternative  Agriculture 3, 51-62.

Cook, R.J. (1994) Introduction of soil organisms to control root diseases. In: C.E. Pankhurst, B.M. Doube, V.V.S.R. Gupta and P.R. Grace (eds.), Soil Biota: Management in sustainable farming systems. CSIRO, East Melbourne, Australia. pp. 13-22.

Curl, E.A. and J.D. Harper (1990) Fauna-microflora interactions. In: J.M. Lynch (ed.), The rhizosphere. John Wiley and Sons, New York, USA. pp. 369-388.

Curry, J.P. and Schmidt, O. (2007). The feeding strategy of earthworms – A review. Pedobiologica 50, 463-477.

Curtis, T.P., Sloan, W.T. and Scannell, J.W. (2002) Estimating prokaryotic diversity and its limits. Proceedings of the National Academy of Science of the United States of America  99 (16) 10494-10489

De Ruiter, P.C., Neutel, A.M. and Moore, J.C. (1995) Energentics, patterns of interaction strengths, and stability in real ecosystems. Science 269, 1257-1260.

Decaens, T., Jiménez, J.J. Gioia, C., Measey, G.J. and Lavelle, P. (2006) The value of soil animals for conservation biology. European Journal of Soil Biology 42, 1, S23-S38.

Denevan, W.M. (1995) Prehistoric agricultural methods as models for sustainability. Advances in Plant Pathology 11, 21-43.

Doran, J.W. and A.J. Jones (1996) Methods for assessing soil quality. SSSA Special Publication 49, ASA, Madison, USA.

Drigo, B., Kowalchuk, G.A., van Veen J.A. (2008) Climate change goes underground: effects of elevated atmospheric CO2 on microbial community structure and activities in the rhizosphere. Biology & Fertility of Soils 44, 667-679.

Ehrlich, H.L. (1996) Geomicrobiology 3^rd edn.  Marcel Dekker, New York.

England, L.S., Holmes, S.B. and Trevors, J.T. (1998) Review: Persistence of viruses and DNA in soil. World Journal of Microbiology and Biotechnology 14, 163-169.

Ester, A. and K. van Rozen (2000) Earthworms (Aporrectodea spp.; Lumbricidae) responsible for soil structure problems in young polders of the Netherlands. In: J. Rusek (ed.), XIIIth International Colloquium on Soil Zoology, Abstracts. pp. 189.

Fey, A., Chin, K.J. and Conrad R. (2001) Thermophilic methanogens in rice field soil. Environmental Microbiology 3, 13-38.

Folgarait, P.J. (1998) Ant biodiversity and its relationship to ecosystem functioning: A review. Biodiversity Conservation 7, 1221-1244.

Freeman, K.R., Pescador, M.Y., Reed, S. C. Costello, E.K., Robeson, M. S. and Schmidt, S.K. (2009) Soil CO₂-flux and photoautotrophic community composition in high-elevation, ‘barren’ soil. Environmental Microbiology 11,  674-686.

Garcia, J.L. (1990) Taxonomy and Ecology of Methanogens. FEMS Microbiology Reviews 87, 297-308.

Giller,  K.E., Beare, M.H., Lavelle, P., Izac, A.-M.N. and Swift, H.J. (1997). Agriculture intensification, soil biodiversity and agroecosystem function. Applied Soil Ecology 6, 3016.

Giri, S. (1995) Short term input operational experiment in tea garden with application of organic matter and earthworm. M.Phil. Thesis, Sambalpur University, Jyvoti Vihar, India.

Gómez-Baggethun, E., R. de Groot, P. L. Lomas, and C. Montes. 2010. The history of ecosystem services in economic theory and practice: From early notions to markets and payment schemes. Ecological Economics 69:1209-1218.

Hågvar, S. (1998) The relevance of the Rio-Convention on biodiversity to conserving the biodiversity of soils. Applied Soil Ecology 9, 1-7.

Hallmann, J., Quadt-Hallmann, A., Mahaffee, W.F. and Kloepper, J.W. (1997) Bacterial endophytes in agricultural crops. Canadian Journal of Microbiology 43, 895-914.

Hawksworth, D.L. (1991) The fungal dimension of biodiversity: magnitude, significance, and conservation. Mycological Research 95, 641-655.

Hawksworth, D.L. and L.A. Mound (1991) Biodiversity databases: The crucial significance of collections. In: D.L. Hawksworth (ed.), The biodiversity of microorganisms and invertebrates: Its role in sustainable agriculture. CAB International, Wallingford, U.K. pp. 17-29.

Hawksworth, D.L. and M.T. Kalin-Arroyo (1995) Magnitude and distribution of biodiversity. In: V.H. Heywood. (ed.), Global biodiversity assessment. Cambridge University Press, Cambridge, U.K. pp. 107-191.

Hayatsu, M., Tago, K and Saito, M. (2008) Various players in the nitrogen cycle: Diversity and functions of the microorganisms involved in nitrification and denitrification. Soil Science and Plant Nutrition 54, 33-45.

Hendrix, P.F., D.A. Crossley, Jr., J.M. Blair and D.C. Coleman (1990) Soil biota as components of sustainable agroecosystems. In: C.A. Edwards, R. Lal, P. Madden, R.H. Miller and G. House (eds.), Sustainable agricultural systems. SWCS, Ankeny, USA. pp. 637-654.

Heywood, V.H. and I. Baste (1995) Introduction. In: V.H. Heywood. (ed.), Global biodiversity assessment. Cambridge University Press, Cambridge, U.K. pp. 1-19.

Hillel, D. (1991) Out of the earth: Civilization and the life of the soil. University of California Press, Berkeley, USA.

www.nature.com/scitable/knowledge/library/conservation-of-biodiversity-13235087

Hussender, C. (2010) Symbiosis in Subterranean Termites: A Review of Insights From Molecular Studies. Environmental Entomology 39 , 378-388.

Ingram, D. and Robertson, N. (1999) Plant Diseases. HarperCollins, London.

Jones, C.G., J.H. Lawton and M. Shachak (1994) Organisms as ecosystem engineers. Oikos 69, 373-386.

Kerry, B. (1980) Biocontrol: Fungal parasites of female cyst nematodes. Journal of Nematology 12, 253-259.

Killham, K. (1994) Soil Ecology. Cambridge University Press.

Kimura, M.,  Jia, Z-J., Nakayama, N. and Asakawa, S. (2008) Ecology of viruses in soils: Past, present and future perspectives. Soli Science and Plant Nutrition 54, 1-32.

Kimura, M., Wada, H. and Takai, Y. (1979) The studies on the rhizosphere of paddy rice. VI. The effects of anaerobiosis on microbes.  Soil Science and Plant Nutrition, 25, 145-153.

Klein, M.G. 1990. Efficacy against soil-inhabiting insect pests. In: R. Gangler and H.K. Kaya (eds.), Entomopathogenic nematodes in biological control. CRC Press, Boca Raton, USA. pp. 195-224.

Krivtsov, V., Garside, A., Brendler, A., Liddell, K., Griffiths, B. and Staines, H.J. (2007). A study of population numbers and ecological interactions of soil and forest floor microfauna. Animal Ecology 57 (4) 467-484.

Lavelle, D.W. Malloch, J. Rusek, B. Söderström, J.M. Tiedje, R.A. Virginia (1997) Biodiversity and ecosystem functioning in soil. Ambio 26, 563-570.

Lavelle, P. (1996) Diversity of soil fauna and ecosystem function. Biol. Intern. 33, 3-16.

Lavelle, P. (2000) Ecological challenges for soil science. Soil Science 165, 73-86.

Lavelle, P., I. Barois, E. Blanchart, G.G. Brown, L. Brussaard, T. Decaëns, C. Fragoso, J.J. Jimenez, K. Ka Kajondo, M.A. Martínez, A.G. Moreno, B. Pashanasi, B.K. Senapati and C. Villenave (1998). Earthworms as a resource in tropical agroecosystems. Nature and Resources 34, 28-44.

Leadbetter, J.R., Schmidt, T.M., Graber, J.R. and Breznak, J.A. (1999) Acetogenesis from H₂ Plus CO₂ by Spirochetes from termite Guts. Science 283, 686-689.

Lodewyckx, C., Vangronsveld, J., Porteous Moore, F., Moore, E.R.B., Taghavi, S, Mezgeay, M.  and  van der Lelie (2002) Endophytic bacteria and their potential applications. Critical Reviews in Plant Science 21, 583-606.

Lowdermilk, W.C. (1978) Conquest of the land through 7,000 years. Agriculture Information Bulletin 99, USDA, Washington D.C., USA.

Luc, M., Douchet, M., Fortuner, R., Castillo, P., Decraemer, W and Lax, P (2010) usefulness of morphologogical data for the study of nematode diversity. Nematodology 12, (4), 495-504.

Lynch, J.M. (1983) Soil Biotechnology - Microbiological factors in crop productivity. Blackwell Scientific Publications. London.

Lynch, J.M., Benedetti, A., Insam, H., Nuti, M.P., Smalla, K., Torsvik, V. and Nannipieri, P. (2004) Microbial diversity in soil: ecological theories, the contribution of molecular techniques and the impact of transgenic plants an transgenic microorganisms. Biology & fertility of Soils 40, 363-385.

Mahaffee, W.F. and J.W. Kloepper (1994) Application of plant growth-promoting rhizobacteria in sustainable agriculture. In: C.E. Pankhurst, B.M. Doube, V.V.S.R. Gupta and P.R. Grace (eds.), Soil biota. Management in sustainable farming systems. CSIRO, East Melbourne, Australia. pp. 23-31.

Mando, A. (1997) The role of termites and mulch in the rehabilitation of crusted Sahelian soils. Tropical Resource Management Papers 16, Wageningen Agricultural University, Wageningen, Holland.

Mankau, R. (1980) Biocontrol: Fungi as nematode control agents. Journal of Nematology 12, 244-252.

Marsh, P and Wellington, E.M.H. (1994) Phage-host interactions in soil. FEMS Microbiology Ecology 15, 99-108.

McNeely, J.A., M. Gadgil, C. Levèque, C. Padoch and K. Redford (1995) Human influences on biodiversity. In: V.H. Heywood (ed.), Global biodiversity assessment. Cambridge University Press, Cambridge, U.K. pp. 711-821.

Miller, R.H. (1990) Soil microbiological inputs for sustainable agricultural systems. In: C.A. Edwards, R. Lal, P. Madden, R.H. Miller and G. House (eds.), Sustainable agricultural systems. SWCS, Ankeny, USA. pp. 614-623.

Neate, S.M. (1994) Soil and crop management practices that affect root diseases of crop plants. In: C.E. Pankhurst, B.M. Doube, V.V.S.R. Gupta and P.R. Grace (eds.), Soil Biota: Management in sustainable farming systems. CSIRO, East Melbourne, Australia. pp. 96-106.

Neidig, N., Jousset, A., Nunes, F., Bonkowski, M., Rüdiger, J.P.  and Scheu, S. (2010) Interference between bacterial feeding nematodes and amoebae relies on innate and inducible mutual toxicity. Functional Ecology 24 (5) 1133-1138.

Nies, D.H. (1999) Microbial heavy-metal resistance. Applied Microbiology and Biotechnology 51, 730-750.

Nisbet, L.J. and F.M. Fox (1991) The importance of microbial biodiversity to biotechnology. In: D.L. Hawksworth (ed.), The biodiversity of microorganisms and invertebrates: Its role in sustainable agriculture. CAB International, Wallingford, U.K. pp. 229-244.

Ortiz, B., C. Fragoso, I. Mboukou, B. Pashanasi, B.K. Senapati and A. Contreras (1999) Perception and use of earthworms in tropical farming systems. In: P. Lavelle, L. Brussaard and P.F. Hendrix (eds.), Earthworm management in tropical agroecosystems. CAB International, Wallingford, U.K. pp. 239-252.

Pankhurst, C.E., B.M. Doube and V.V.S.R. Gupta (1997) Biological indicators of soil health. CAB International, Wallingford, U.K.

Paoletti, M.G. (1999a) Using bioindicators based on biodiversity to assess landscape sustainability. Agriculture, Ecosystems & Environment 74, 1-18.

Paoletti, M.G. (1999b) Invertebrate biodiversity as bioindicators of sustainable landscapes: Practical use of invertebrates to assess sustainable land use. Elsevier, Amsterdam, Holland.

Párraga, J., Rivadeneyra, M.A., Delgado, R., Iñiguez, J., Soriano, M. and Delgado, G. (1998) Study of biomineral formation by bacteria from soil solution equilibria. Reactive and Functional Polymers 36, 265-271.

Patterson, D.J. (2009) Free-Living Freshwater protozoa. A Colour Guide.  Manson publishing, ASM Press

Powers, T.O., Neher, D.A., Mullin, P., Esquivel, A., Giblin-Davis, R.M., Kanzaki, N., Stock, S.P., Mora, M.M. and Uribe-Lorio, L. (2009) Tropical nematode diversity:  vertical stratification of nematode communities in a Costa Rican humid lowland rainforest. Molecular Ecology 18 (5) 985-996.

RAFI (1995) Conserving indigenous knowledge: Integrating two systems of innovation. Rural Advancement Foundation International, Ottawa, Canada.

Ramos S., F.J. (1998) Grupo Vicente Guerrero de Españita, Tlaxcala. Dos decadas de promoción de campesino a campesino. Red de Gestión de Recursos Naturales and Rockefeller Foundation, México City, Mexico.

Rath, A.C. (1992) Metarrhizium anisopliae for control of the pasture scarab Adophorus couloni. In: T.A. Jackson and T.R. Glare (eds.), The use of pathogens in scarab and pest management. Intercept, Andover, U.K. pp. 217-227.

Read, D.J. and Perez-Moreno, J. (2003) Mycorrhizas and nutrient cycling in ecosystems – a journey towards relevance. New Phytologist 167, 475-492.

Reddell, P. and Spain A.V. (1991) Earthworms as vectors of viable propagules of mycorrhizal fungi. Soil Biology & Biochemistry 23, 767-774.

Redford, K.H. and J.A. Mansour (1996) Traditional peoples and biodiversity conservation in large tropical landscapes. The Nature Conservancy, Arlington, USA.

Rice, G., Stedman, K., Snyder, J., Wiedenheft, B., Willits, D., Brumfield, S., McDermott, T. and Young, M.J. (2001) Viruses from extreme thermal environments. Proceedings of the National Academy of Sciences 98 (23) 13341-13345.

Richard, B., Decaëns, T., Rougerie, R., James, S.W., Porco, D. and Hebert, P.D.N. (2010) Re-integrating earthworm juveniles into soil biodiversity studies: species identification through DNA barcoding. Molecular Ecology Resources 10, 606-614.

Rillig, M.C., 2004. Arbuscular mycorrhizae, glomalin and soil aggregation. Canadian Journal of Soil Science 84, 355-363.

Rillig, M.C., Mummey, D.L., 2006. Mycorrhizas and soil structure. New Phytologist 171, 41-53.

Ritz, K. (2005) Underview: origins and consequences of belowground biodiversity. In: R. D. Bardgett, M. B. Usher and D. W. Hopkins (eds), Biological Diversity and Function in Soils. Cambridge University Press, Cambridge

Rohwer, F. (2003) The Great Phage Diversity. Cell 113 (2), 141.

Rovira, A.D., L.F. Elliot and R.J. Cook (1990) The impact of cropping systems on rhizosphere organisms affecting plant health. In: J.M. Lynch (ed.), The rhizosphere. John Wiley and Sons, New York, USA. pp. 389-436.

Sanchez, P.A. (1994) Tropical soil fertility research: towards the second paradigm. In: Transactions of the 15th World Congress of Soil Science, Volume 1. ISSS, Acapulco, Mexico. pp. 65-88.

Sanchez, P.A. (1997) Changing tropical soil fertility paradigms: from Brazil to Africa and back. In: A.C. Moniz (ed.), Plant-soil interactions at low pH. Brazilian Soil Science Society, Lavras, Brazil. pp. 19-28.

Sano, E., Carlson, S., Wegely, L. and Rohwer, F. (2004) Movement of Viruses between Biomes Applied and Environmental Microbiology 70, (10), 5842-5846.

Schaefer, M. and J. Schauermann (1990) The soil fauna of beech forests: comparison between a mull and a modern soil. Pedobiologia 34, 299-314.

Schlegel, H.G. (1986) General Microbiology. 6^th edn. Cambridge University Press.

Senapati, B.K., P. Lavelle, S. Giri, B. Pashanasi, J. Alegre, T. Decaëns, J.J. Jiménez, A. Albrecht, E. Blanchart, M. Mahieux, L. Rousseaux, R. Thomas, P.K. Panigrahi and M. Venkatachalan (1999) In-soil technologies for tropical ecosystems. In: P. Lavelle, L. Brussaard and P.F. Hendrix (eds.), Earthworm management in tropical agroecosystems. CAB International, Wallingford, U.K. pp. 199-237.

Sharp, R. (2001) Review - Bacteriophages: biology and history. Journal of Chemical Technology and Biotechnology 76, 667-672.

Shiva, V. (1991) The violence of the green revolution. Zed Books, London, U.K.

Siqueira, F.M.S. Moreira, A.S. Lopes, L.R.G. Guilherme, V. Faquin, A.E. Furtani Neto and J.G. Carvalho (eds.), Inter-relação fertilidade, biologia do solo e nutrição de plantas. UFLA, Lavras, Brasil. pp. 509-528.

Sirvastava, J.P., Smith, N.J.H. and Forno, D.A. (1999) Integration Biodiversity in Agricultural Intensification : Towards Sound Practices. The World Bank Report 19673.

Solbrig, O.T. and D.J. Solbrig (1994) So shall you reap: Farming and crops in human affairs. Island Press, Washington D.C., USA.

Spiegleman, D., Whissell, G. and Greer, C.W. (2005) A survey of the methods for the characterization of microbial consortia and communities. Canadian Journal of Microbiology 51, 355-386.

Sprent, J.I. (2001) Nodulation in legumes. Royal Botanic Gardens, Kew.

Swanson, M.M., Fraser, G., Daniell, T.J., Torrance, L., Gregory P.J., Taliansky, M. (2009). Viruses in soil: morphological diversity and abundance in the rhizosphere. Annals Applied Biology, 155 (1), 51-60.

Swift, M.J. (1997) Biological management of soil fertility as a component of sustainable agriculture: Perspectives and prospects with particular reference to tropical regions. In: L. Brussaard and R. Ferrera-Cerrato (eds.), Soil ecology in sustainable agricultural systems. Lewis Publishers, Boca Raton, USA. pp. 137-159.

Swift, M.J. (1999) Towards the second paradigm: Integrated biological management of soil. In: J.O. Siqueira, F.M.S. Moreira, A.S. Lopes, L.R.G. Guilherme, V. Faquin, A.E. Furtani Neto and J.G. Carvalho (eds.), Inter-relação fertilidade, biologia do solo e nutrição de plantas. UFLA, Lavras, Brasil. pp. 11-24.

Swift, M.J., J. Vandermeer, P.S. Ramakrishnan, J.M. Anderson, C.K. Ong and B.A. Hawkins (1996) Biodiversity and agroecosystem function. In: H.A. Mooney, J.H. Cushman, E. Medina, O.E. Sala and E.-D. Schulze (eds.), Functional roles of biodiversity: A global perspective. John Wiley and Sons, New York, USA. pp. 261-298.

Swift, M.J., L. Bohren, S.E. Carter, A.M. Izac and P.L. Woomer (1994) Biological management of tropcial soils: Integrating process research and farm practice. In: P.L. Woomer and M.J. Swift (eds), The Biological Management of Tropical Soil Fertility. John Wiley and Sons, New York, USA. pp. 209-227.

Swift, M.J., O.W. Heal and J.M. Anderson (1979) Decomposition in terrestrial ecosystems. Blackwell Scientific, Oxford, U.K.

Toro, M., Azcon, R. and Barea, J.M. (1998) The use of isotopic dilution techniques to evaluate the interactive effects of Rhizobium genotype, mycorrhizal fungi, phosphate-solubilizing rhizobacteria and rock phosphate on nitrogen and phosphorous acquisition by Medicago sativa. New Phytologist 138, 265-273.

Torsvik, V., J. Goksøyr, F.L. Daae, R. Sørheim, J. Michalsen and K. Salte (1994) Use of DNA analysis to determine the diversity of microbial communities. In: K. Ritz, J. Dighton and K.E. Giller (eds.), Beyond the biomass: Composition and functional analysis of soil microbial communities. John Wiley and Sons, Chichester, U.K. pp. 39-48.

TSBF (2000) The biology and fertility of tropical soils. Tropical Soil Biology and Fertility Programme Report 1997-1998. TSBF, Nairobi, Kenya.

Uroz, S., Calvaruso C., Turpault, M-P and Frey-Klett, P (2009) Mineral weathering by bacyeria: ecology, actors and mechanisms.  Trends in Microbiology 17, 378-387.

Van der Heijden, M.G.A., Bakker, R., Verwaal, J., Scheublin, T.R., Rutten, M, van Logtestijn, R. and Staelin, C. (2006) Symbiotic bacteria as a determinant of plant community structure and plant productivity in dune grassland. FEMS Microbial Ecology, 56, 178-187.

Van der Heijden, M.G.A., Bardgett, R.D. and van Straalen, N.M. (2008) The unseen majority: soil microbes as drivers of plant diversity and productivity in terrestrial ecosystems. Ecology Letters 11, 296-310.

Van Megan, H., van den Elsen, S., Holterman, M., Karssen, G., Mooyman, P., Bongers, T., Holovachov, O., Bakker, J. and Helder, J. (2009) A phylogenetic tree of nematodes based on about 1200 full-length small subunit ribosomal DNA sequences. Nematodology 11, (6) 927-950.

Vandermeer, J., M. van Noordwijk, J.M. Anderson, C. Ong and I. Perfecto (1998) Global change and multi-species agroecosystems: Concepts and issues. Agriculture, Ecosystems&  Environment 67, 1-22.

Villarreal, L.P. (2004) Are Viruses Alive? Scientific American, November, 76-81.

Vogel, T.M., Simonet, P., Jansson, J.K., Hirsch, P.R., Tiedje, J.M., van Elsas, J.D., Bailey.M.J., Nalin, R. and Philippot, L. (2009) TerraGenome: a consortium for the sequencing of a soil metagenome. Nature Reviews Microbiology 7, 252.

Wall, D.H. and J.C. Moore (1999) Interactions underground: Soil biodiversity, mutualism, and ecosystem processes. BioScience. 49, 109-117.

Wallwork, J.A. (1970) Ecology of soil animals. McGraw Hill, London, U.K.

Walter, D.E. and H.C. Proctor (1999) Life at the microscale: Mites and the study of ecology, evolution and behaviour. New South Wales Press, Sydney, Australia.

Wardle, D.A (2006) The Influence of biotic interactions on soil biodiversity. Ecology Letters 9, 870-886.

Warnecke, F., Luginbühl, P.,  Ivanova, N.,  Ghassemian, M et al. (2007) Metagenomic and functional analysis of hindgut microbiota of a wood-feeding higher termite. Nature 450, 560-565.

Webster, J. (1980) Biocontrol: The potential of entomophilic nematodes in insect management. Journal of Nematology 12, 270-278.

Webster, J. (1985) Introduction to Fungi. 2^nd Edition. Cambridge University Press, Cambridge.

Weinbauer, M.G. (2006) Ecology of prokaryotic viruses. FEMS Microbiology Reviews, 28, (2), 127-181.

Williamson, K.E., Radosevick, M.  and Wommack, K.E. (2005) Abundance and Diversity of Viruses in Six Delaware Soils. Applied and Environmental Microbiology 71 (6), 3119-3125.

Wilson, E.O. (1985) The biological diversity crisis: a challenge to science. BioScience 35, 700-706.

Woomer, P.L. and M.J. Swift (1994) The biological management of tropical soil fertility. John Wiley and Sons, New York, USA.

Yeates, G.W. (2007) Abundance, diversity, and resilience of nematode assemblages in forest soils. Canadian Journal of Forest Research 37 (2) 216-225.

Young, A. (1998) Land resources: Now and for the future. Cambridge University Press, Cambridge, U.K.

Zunke, U. and R.N. Perry (1997) Nematodes: Harmful and beneficial organisms. In: G. Benckiser (ed.) Fauna in soil ecosystems: Recycling processes, nutrient fluxes, and agricultural production. Marcel Dekker, New York, USA. pp. 85-123