Earthworms and agricultural systems: Status of knowledge and research in Canada

Canadian Journal of Soil Science

Volumn 83, Issue 3, 2003, Pages 265-278

  Tomlin, A D ^a   Fox, C A ^a  

^a AGRICULTURE AND AGRI FOOD CANADA   (Canada)

Author keywords

Agroecosystems; Earthworms; Ecology; Soil biodiversity; Species distribution

Indexed keywords

AGRICULTURAL PRACTICE; AGROECOLOGY; EARTHWORM; SOIL QUALITY; SPECIES DIVERSITY;

CANADA;

CELLULAR ORGANISMS; PHERETIMA SIEBOLDI;

EID: 0041411581     PISSN: 00084271     EISSN: None     Source Type: Journal    
DOI: 10.4141/s01-062     Document Type: Article

References (140)

1. Altemüller, H-J. and Joschko, M. 1992. Fluorescent staining of earthworm casts for thin section microscopy. Soil Biol. Biochem. 24: 1577-1582.
2. Atiyeh, R. M., Subler, S., Edwards, C. A. and Metzger, J. 1999. Growth of tomato plants in horticultural potting media amended with vermicompost. Pedobiologia 43: 724-728.
3. Bal, L. 1973. Micromorphological analysis of soils. Lower levels in the organization of organic soil materials. Soil Survey Papers No.6. Soil Survey Institute, Wageningen, The Netherlands. 174 pp.
4. Bal, L. 1982. Zoological ripening of soils. Ctr. Agric. Publ. Doc., Report 850. Wageningen, The Netherlands. 365 pp.
5. Berman, D. I. and Marusik, Y. M. 1994. On Bimastos parvus (Oligochaeta: Lumbricidae) from Yukon Territory (Canada), with discussion of distribution of the earthworms in northwestern North America and northeastern Siberia. Megadrilogica 5(10): 113-116.
6. Berry, E. C. and Karlen, D. L. 1993. Comparison of alternative farming systems. II. Earthworm population density and species diversity. Am. J. Alt. Agric. 8: 21-26.
7. Bolden, P. J., Edwards, C. A., Zhang, Q., Parmelee, R. W. and Allen, M. 2002. Indirect effects of earthworms on microbial assimilation of labile carbon. Appl. Soil Ecol. 20: 255-261.
8. Boucht, M. B. 1977. Strategies lombriciennes. Pages 122-132 in U. Lohm and T. Persson, eds. Soil organisms as components of ecosystems. Swedish Natural Science Research Council, NFR, Vol. 25. 614 pp.
9. Butt, K. R., Frederickson, J. and Morris, R. M. 1992. The intensive production of Lumbricus terrestris L. for soil amelioration. Soil Biol. Biochem. 24: 1321-1325.
10. Callaham, Jr., M. A. and Blair, J. M. 1999. Influence of differing land management on the invasion of North American tallgrass prairie soils by European earthworms. Pedobiologia 43: 507-512.
11. Canadian Food Inspection Agency. 2003. Policy directive D-00-04-Plant Protection Import Requirements for Earthworms. Plant Health and Production Division. [Online] Available: http://www.inspection.gc.ca/english/plaveg/protect/dir/d-00-04e.shtml.
12. Chan, K. Y. 2001. An overview of some tillage impacts on earthworm population abundance and diversity - implications for functioning in soils. Soil Tillage Res. 57: 179-191.
13. Clapperton, M. J. 1999. Tillage practices, and temperature and moisture interactions affect earthworm populations and species composition. Pedobiologia 43: 658-665.
14. Colinvaux, C. P. 1989. Ice-age Amazon revisited, Nature 340: 188-189.
15. Conference of the Parties. 1996. Report of the Third Meeting of the Conference of the Parties to the Convention on Biological Diversity. Annex II. Decision 111/11 Conservation and sustainable use of agricultural biological diversity. [Online] Available: http://www.agora21.org/cdb/cop3/cop3-en36.html.
16. Conference of the Parties 1998. Report of the Fourth Meeting of the Conference of the Parties to the Convention on Biological Diversity. Pages 96-98, Decision IV/6. Agricultural biological diversity. [Online] Available: http://www.biodiv.org/meetings/final-reports.asp.
17. Crosby, A. W. 1986. Ecological imperialism: The biological expansion of Europe, 900-1900. Cambridge University Press, New York, NY. 386 pp.
18. Curry, J. P., Byrne, D. and Schmidt, O. 2002. Intensive cultivation can drastically reduce earthworm populations in arable land. Eur. J. Soil Biol. 38: 127-130.
19. Darwin, C. 1881. The formation of vegetable mould through the action of worms, with observations on their habits. Murray, London, UK. 326 pp.
20. Davidson, D. A., Bruneau, P. M. C., Grieve, I. C. and Young, I. M. 2002. Impacts of fauna on an upland grassland soil as determined by micromorphological analysis. Appl. Soil Ecol. 20: 133-143.
21. de St. Remy, E. A. and Daynard, T. B. 1982. Effects of tillage methods on earthworm populations in monoculture corn. Can. J. Soil Sci. 62: 699-703.
22. Delcourt, H. R. and Delcourt, P. A. 1984. Ice age haven for hardwoods. Nat. Hist. 9: 22-28.
23. Edwards, C. A. and Bohlen, P. J. 1996. Biology and ecology of earthworms. 3rd ed. Chapman and Hall, London, UK. 426 pp.
24. Edwards, C. A. and Fletcher, K. E. 1988. Interactions between earthworms and microorganisms in organic matter breakdown. Agric. Ecosyst. Environ. 24: 235-247.
25. Edwards, C. A. and Lofty, J. R. 1977. Biology of earthworms. 2nd ed. Chapman and Hall, London, UK. 333 pp.
26. Edwards, C. A. and Lofty, J. R. 1982. The effect of direct drilling and minimal cultivation on earthworm populations. J. Appl. Ecol. 19: 723-734.
27. Edwards, C. A. and Thompson, A. R. 1973. Pesticides and the soil fauna. Residue Rev. 45: 1-79.
28. Edwards, W. M., Shipitalo, M. J., Owens, L. B. and Norton, L. D. 1990. Effect of Lumbricus terrestris L. burrows on hydrology of continuous no-till corn fields. Geoderma 46: 73-84.
29. Ehlers, W. 1975. Observations on earthworm channels and infiltration on tilled and untilled loess soil. Soil Sci. 119: 242-249.
30. Farenhorst, A., Topp, E., Bowman, B. T. and Tomlin, A. D. 2000a. Earthworms and the dissipation and distribution of atrazine in the soil profile. Soil Biol. Biochem. 32: 23-33.
31. Farenhorst, A., Topp, E., Bowman, B. T. and Tomlin, A. D. 2000b. Earthworm burrowing and feeding activity and the potential for atrazine transport by preferential flow. Soil Biol. Biochem. 32: 479-488.
32. Fender, W. M. 1985. Earthworms of the western United States. Part I. Lumbricidae. Megadrilogica 4: 93-129.
33. Francis, G. S. and Fraser, P. M. 1998. The effects of three earthworm species on soil macroporosity and hydraulic conductivity. Appl. Soil Ecol. 10: 11-19.
34. French, H. M. 1976. The periglacial environment. 2nd ed. Longmans, London, UK. 256 pp.
35. Gallagher, A. V. and Wollenhaupt, N. C. 1997. Surface alfalfa residue removal by earthworms Lumbricus terrestris L. in a no-till agroecosystem. Soil Biol. Biochem. 29: 477-479.
36. Gates, G. E. 1958. On endemicity of earthworms in the British Isles with notes on nomenclature, taxonomy and biology (Oligochaeta: Lumbricidae). Ann. Mag. Nat. Hist. 13: 33-44.
37. Gates, G. E. 1966. Requiem for megadrile utopias. A contribution toward the understanding of the earthworm fauna of North America. Proc. Biol. Soc. Wash. 79: 239-254.
38. Gates, G. E. 1970. Miscellanea Megadrilogica VII. Megadrilogica 1 (2): 1-14.
39. Gates, G. E. 1972. Toward a revision of the earthworm family Lumbricidae. IV. The trapezoides species group. Bull. Tall Timbers Res. Stn. 12: 1-146.
40. Gates, G. E. 1973. The earthworm genus Octolasion in America. Bull. Tall Timbers Res. Stn. 14: 29-50.
41. Gates, G. E. 1976. More on Oligochaete distribution in North America. Megadrilogica 2 (11): 1-6.
42. Gates, G. E. 1978a. The earthworm genus Lumbricus in North America. Megadrilogica 3: 81-116.
43. Gates, G. E. 1978b. Contributions to a revision of the earthworm family Lumbricidae. XXII. The genus Eisenia in North America. Megadrilogica 3: 131-147.
44. Gates, G. E. 1979. Contributions to a revision of the earthworm family Lumbricidae. XXIII. The genus Dendrodrilus Omodeo, 1956, in North America. Megadrilogica 3 (9): 151-162.
45. Gates, G. E. 1980. Contributions to a revision of the earthworm family Lumbricidae. XXV. The genus Allolobophora Eisen, 1874, in North America. Megadrilogica 3: 177-184.
46. Gates, G. E. 1982. Farewell to North American megadriles. Megadrilogica 4: 12-77.
47. Görres, J. H., Savin, M. C. and Amador, J. A. 2001. Soil micropore structure and carbon mineralization in burrows and casts of an anecic earthworm (Lumbricus terrestris). Soil Biol. Biochem. 33: 1881-1887.
48. Greig-Smith, P. W. 1992. Ecotoxicology of earthworms. Intercept, Andover, UK. 269 pp.
49. Hilton, D. F. J. and Reynolds, J. W. 1983. The earthworm (Oligochaeta: Lumbricidae) fauna of Cypress Hills Provincial Park, Alberta. Megadrilogica 4: 91-92.
50. Hutcheon, J. A., Iles, D. R. and Kendall, D. A. 2001. Earthworm populations in conventional and integrated farming systems in the LIFE Project (SW England) in 1990-2000. Ann. Appl. Biol. 139: 361-372.
51. Jordan, G. A., Reynolds, J. W. and Burnett, A. J. 1976. Computer plotting and analysis of earthworm population distribution in Prince Edward Island. Megadrilogica 2 (10): 1-7.
52. Lachnicht, S. L., Parmelee, R. W., McCartney, D. and Allen, M. 1997. Characteristics of macroporosity in a reduced tillage agroecosystem with manipulated earthworm populations: Implications for infiltration and nutrient transport. Soil Biol. Biochem. 29: 493-498.
53. Langmaack, M. 1999. Earthworm communities in arable land influenced by tillage, compaction and soil. Z. Ökologie Naturschutz 8: 11-21.
54. Langmaack, M., Schrader, S., Rapp-Bernhardt, U. and Kotzke, K. 1999. Quantitative analysis of earthworm burrow systems with respect to biological soil-structure regeneration after soil compaction. Biol. Fertil. Soils 28: 219-229.
55. Langmaid, K. K. 1964. Some effects of earthworm invasion in virgin podzols. Can. J. Soil Sci. 44: 34-37.
56. Lavelle, P. 1988. Earthworm activities and the soil system. Biol. Fertil. Soils 6: 237-251.
57. Lavelle, P. and Martin, A. 1992. Small scale and large scale effects of endogeic earthworms on soil organic matter dynamics in soils of the humid tropics. Soil Biol. Biochem. 24: 1491-1498.
58. Lavelle, P., Barois, I., Martin, A., Zaidi, Z. and Schaefer, R. 1989. Management of earthworm populations in agro-ecosystems: a possible way to maintain soil quality. Pages 109-122 in M. Clarholm and L. Bergstrom, eds. Ecology of arable land - perspectives and challenges. Kluwer Academic, Dordrecht, The Netherlands.
59. Lee, K. E. 1985. Earthworms, their ecology and relationships with soils and land use. Academic Press, New York, NY. 411 pp.
60. Lee, K. E. 1987. Peregrine species of earthworms. Pages 315-327 in A. M. Bonvicini-Pagliai and P. Omodeo, eds. On earthworms. Selected Symposia and Monographs U.Z.I., 2 Mucchi, Modena. 562 pp.
61. Lee, K. E. and Smettem, K. R. J. 1995. Identification and manipulation of soil biopores for the management of subsoil problems. Pages 211-243 in N. S. Jayawardane and B. A. Stewart, eds. Subsoil management techniques. Lewis Publishers, Boca Raton, FL. 247 pp.
62. Ligthart, T. N. and Peek, G. J. C. W. 1997. Evolution of earthworm burrow systems after inoculation of Lumbricid earthworms in a pasture in the Netherlands. Soil Biol. Biochem. 29: 453-462.
63. Makeschin, F. 1997. Earthworms (Lumbricidae: Oligochaeta): Important promoters of soil development and soil fertility. Pages 173-223 in G. Benckiser, ed. Fauna in soil ecosystems: Recycling processes, nutrient fluxes, and agricultural production. Marcel Dekker, Inc., New York, NY.
64. Marinissen, J. C. Y. and de Ruiter, P. C. 1993. Contribution of earthworms to carbon and nitrogen cycling in agro-ecosystems. Agric. Ecosyst. Environ. 47: 59-74.
65. Marinissen, J. C. Y. and Hillenaar, S. I. 1997. Earthworm-induced distribution of organic matter in macro-aggregates from differently managed arable fields. Soil Biol. Biochem. 29: 391-395.
66. Matthews, J. V. 1979. Tertiary and quarternary environments: historical background for an analysis of the Canadian insect fauna. Pages 31-86 in H. V. Danks, ed. Canada and its insect fauna. No. 108. Memoirs of the Entomological Society of Canada, Ottawa, ON.
67. McAlpine, D. F., Reynolds, J. W., Fletcher, T. J., Trecartin, J. L. and Sabine, D. L. 2001. Sparganophilus eiseni (Oligochaeta, Sparganophilidae) in New Brunswick, an addition to the earthworm fauna of Maritime Canada. Megadrilogica 8 (10): 53-56.
68. McInerney, M. and Bolger, T. 2000. Temperature, wetting cycles and soil texture effects on carbon and nitrogen dynamics in stabilized earthworm casts. Soil Biol. Biochem. 32: 335-349.
69. McKey-Fender, D. and Fender, W. M. 1982. Arctiostrotus (gen. nov.). Part I. The identity of Plutellus perrieri Benham, 1892, and its distribution in relation to glacial refugia. Megadrilogica 4: 81-85.
70. McKey-Fender, D., Fender, W. M. and Marshall, V. G. 1994. North American earthworms native to Vancouver Island and the Olympic Peninsula. Can. J. Zool. 72: 1325-1339.
71. McLean, M. A. and Parkinson, D. 2000. Field evidence of the effects of the epigeic earthworm Dendrobaena octaedra on the microfungal community in pine forest floor. Soil Biol. Biochem. 32: 351-360.
72. Mermut, A. R. 1985. Faunal influence on soil microfabrics and other soil properties. Quaest. Entomol. 21: 595-608.
73. Mrsic, N. 1991. Monograph on earthworms (Lumbricidae) of the Balkans. Slov. Akad. Znanosti Umetnosti, Ljubljana, Slovenia. 757 pp.
74. Omodeo, P. 1963. Distribution of the terricolous oligochaetes on the two shores of the Atlantic. Pages 127-151 in A. Love and D. Love, eds. North Atlantic biota and their history. Macmillan Co., New York, NY.
75. Perret, J., Prasher, S. O., Kantzas, A. and Langford, C. 1999. Three-dimensional quantification of macropore networks in undisturbed soil cores. Soil Sci. Soc. Am. J. 63: 1530-1543.
76. Pitkänen, J. and Nuutinen, V. 1997. Distribution and abundance of burrows formed by Lumbricus terrestris L. and Aporrectodea caliginosa Sav. in the soil profile. Soil Biol. Biochem. 29: 463-467.
77. Qui, J.-P. and Bouché, M. B. 1998. Liste classee des taxons valides de lombriciens (Oligochaeta: Lumbricoidea), après l'étude des trois cinquieme d'être-eux. Documents pédozoologiques et intégrologiques 4: 180-200.
78. Reynolds, J. W. 1972. Earthworms (Lumbricidae) of the Haliburton Highlands, Ontario, Canada. Megadrilogica 1 (3): 1-11.
79. Reynolds, J. W. 1973a. The earthworms of Delaware (Oligochaeta: Acanthodrilidae and Lumbricidae). Megadrilogica 1 (5): 1-4.
80. Reynolds, J. W. 1973b. The earthworms of Rhode Island (Oligochaeta: Lumbricidae). Megadrilogica 1 (6): 1-4.
81. Reynolds, J. W. 1974. The earthworms of Maryland (Oligochaeta: Acanthodrilidae, Lumbricidae, Megascolecidae and Sparganophilidae). Megadrilogica 1 (11): 1-12.
82. Reynolds, J. W. 1975a. Boiteagan (Oligochaeta: Lumbricidae) Cheap Breatunn. Megadrilogica 2 (6): 1-7.
83. Reynolds, J. W. 1975b. The earthworms (Oligochaeta: Lumbricidae) of Prince Edward Island. Megadrilogica 2 (7): 4-11.
84. Reynolds, J. W. 1975c. Les lombricides (Oligochaeta) de L'île d'Orléans, Québec. Megadrilogica 2 (5): 8-11.
85. Reynolds, J. W. 1975d. Les lombricides (Oligochaeta) de la Gaspésie, Québec. Megadrilogica 2 (4): 4-9.
86. Reynolds, J. W. 1975e. Les Lombricides (Oligochaeta) des Îles-de-la-Madeleine. Megadrilogica 2 (3): 1-8.
87. Reynolds, J. W. 1976a. The distribution and ecology of the earthworms of Nova Scotia. Megadrilogica 2 (8): 1-7.
88. Reynolds, J. W. 1976b. Un aperçu des vers de terre dans les forêts Nord-Americaines, leurs activités et leurs repartition. Megadrilogica 2 (9): 1-11.
89. Reynolds, J. W. 1976c. Catalogue et clé d'identification des lombricidés du Québec. Nat. Can. 103 (1): 21-27.
90. Reynolds, J. W. 1977. The earthworms (Lumbricidae and Sparganophilidae) of Ontario. Life Sci. Misc. Pub., Royal Ontario Museum, Toronto, ON. 141 pp.
91. Reynolds, J. W. 1980. The earthworm family Sparganophilidae (Annelida: Oligochaeta) in North America. Megadrilogica 3: 189-204.
92. Reynolds, J. W. 1994. The distribution of the earthworms (Oligochaeta) of Indiana: a case for the post Quarternary introduction theory for megadrile migration in North America. Megadrilogica 5: 13-32.
93. Reynolds, J. W. 1995. The distribution of earthworms (Annelida, Oligochaeta) in North America. Pages 133-153 in P. C. Mishra, N. Behera, B. K. Senpati, and B. C. Guru, eds. Advances in ecology and environmental sciences. Ashish Publishing House, New Delhi, India. 651 pp.
94. Reynolds, J. W. 2000a. A contribution to our knowledge of the earthworm fauna of Newfoundland and Labrador, Canada (Oligochaeta, Lumbricidae). Megadrilogica 8 (2): 5-8.
95. Reynolds, J. W. 2000b. A contribution to our knowledge of the earthworm fauna of Manitoba, Canada (Oligochaeta, Lumbricidae). Megadrilogica 8 (3): 9-12.
96. Reynolds, J. W. 2001a. The earthworms of New Brunswick (Oligochaeta: Lumbricidae). Megadrilogica 8 (8): 37-47.
97. Reynolds, J. W. 2001b. Sparganophilidae - are terrestrial oligocheatologists missing the habitat in North America? Megadrilogica 8 (11): 84-86.
98. Reynolds, J. W. and Clapperton, M. J. 1996. New earthworm records for Alberta (Oligochaeta: Lumbricidae) including the description of a new Canadian species. Megadrilogica 6: 73-82.
99. Reynolds, J. W. and Cook, D. G. 1993. Nomenclatura Oligochaetologica Supplementrum Tertium: a catalogue of the names, descriptions and type specimens of the Oligochaeta. New Brunswick Museum Monographic Series (Natural History) No. 9, Saint John, NB. 33 pp.
100. Reynolds, J. W. and Jordan, G. A. 1975. A preliminary conceptual model of megadrile activity and abundance in the Haliburton Highlands. Megadrilogica 2 (2): 1-9.
101. Reynolds, J. W. and Khan, M. N. 1999. A contribution to our knowledge of the earthworm fauna of Saskatchewan, Canada. Megadrilogica 7 (12): 81-82.
102. Reynolds, J. W. and Mayville P. N. 1994. New earthworm records from Rainy River District in North Western Ontario (Oligocheata: Lumbricidae). Megadrilogica 6: 13-20.
103. Reynolds, J. W. and Moore, S. M. 1996. Note on the first earthworm record from the Northwest Territories, Canada. Megadrilogica 6 (10): 96.
104. Reynolds, J. W. and Reynolds, J. W. 1992a. Additional Ontario earthworm County Records (Lumbricidae). Megadrilogica 4(8): 144.
105. Reynolds, J. W. and Reynolds, K. W. 1992b. Les vers de terre (Oligochaeta: Lumbricidae et Sparganophilidae) sur la Rive nord du Saint-Laurent (Québec). Megadrilogica 4: 145-161.
106. Rusek, J. 1985. Soil microstructures - Contributions on specific soil organisms. Quaest. Entomol. 21: 497-514.
107. Salmon, S. and Pongé, J-F. 2001. Earthworm excreta attract soil springtails: laboratory experiments on Heteromurus nitidus (Collembola: Entomobryidae). Soil Biol. Biochem. 33: 1959-1969.
108. Scheu, S. and McLean, M.-A. 1993. The earthworm (Lumbricidae) distribution in Alberta (Canada). Megadrilogica 4: 175-185.
109. Schmidt, O., Curry, J. P., Hackett, R. A., Purvis, G. and Clements, R. O. 2001. Earthworm communities in conventional wheat monocropping and low-input wheat-clover intercropping systems. Ann. Appl. Biol. 138: 377-388.
110. Schrader, S. and Joschko, M. 1991. A method for studying the morphology of earthworm burrows and their function in respect to water movement. Pedobiologia 35: 185-190.
111. Schrader, S. and Zhang, H. 1997. Earthworm casting: Stabilization or destabilization of soil structure. Soil Biol. Biochem. 29: 469-475.
112. Schwert, D. P. 1979. Description and significance of a fossil earthworm (Oligochaeta: Lumbricidae) cocoon from postglacial sediments in southern Ontario. Can. J. Zool. 57: 1402-1405.
113. Shaw, C. and Pawluk, S. 1986. The development of soil structure by Octolasion tyrtaeum, Aporrectodea turgida and Lumbricus terrestris in parent materials belonging to different textural classes. Pedobiologia 29: 327-339.
114. Shipitalo, M. J. and Butt, K. R. 1999. Occupancy and geometrical properties of Lumbricus terrestris L. burrows affecting infiltration. Pedobiologia 43: 782-794.
115. Shipitalo, M. and Protz, R. 1987. Comparison of morphology and porosity of a soil under conventional and zero tillage. Can. J. Soil Sci. 67: 445-456.
116. Shipitalo, M. and Protz, R. 1988. Factors influencing the dispersibility of clay in worm casts. Soil Sci. Soc. Am. J. 52: 764-769.
117. Shipitalo, M., Protz, R. and Tomlin, A. D. 1988. Effect of diet on the feeding and casting activity of Lumbricus terrestris and L. rubellus in laboratory culture. Soil Biol. Biochem. 20: 233-237.
118. Smith, C. A. S., Tomlin, A. D., Miller, J. J., Moore, L. V., Tynen, M. J. and Coates, K. A. 1990. Large enchytraeid (Annelida: Oligochaeta) worms and associated fauna from unglaciated soils of the northern Yukon, Canada. Geoderma 47 (1): 17-32.
119. Soil Survey Staff. 1992. Keys to soil taxonomy. 5th ed. SMSS technical monograph No. 19. Pocahontas Press, Inc., Blacksburg, VA. 556 pp.
120. Spiers, G. A., Gagnon, D., Nason, G. E., Packee, E. C. and Lousier, J. D. 1986. Effects and importance of indigenous earthworms on decomposition and nutrient cycling in coastal forest ecosystems. Can. J. For. Res. 16: 983-989.
121. Spiers, G. A., Nason, G. E., Lousier, J. D., Marshall, V. G., Packee, E. C. and Gagnon, D. 1984. Endemic earthworms and nutrient cycling in Coastal Wet Western Hemlock Biogeoclimatic Subzone, Vancouver Island. Page 447 (Abstract) in E. Stone, ed. Forest soils and treatment impacts: Proc. 6th North American Forest Soil Conference. Held at University of Tennessee, Knoxville, TN. Publ. No. 84-10, Society of American Foresters, Bethesda, MD.
122. Springett, J. A. 1985. Effect of introducing Allolobophora longa Ude on root distribution and some soil properties in New Zealand pastures. Pages 399-405 in A. H. Fitter, D. Atkinson, D. J. Read, and M. B. Usher, eds. Ecological interactions in soil. Plants, microbes and animals. Special Publ. No. 4. British Ecological Society. Blackwell Scientific Publications, London, UK.
123. Stephenson, J. 1930. The Oligochaeta. Clarendon Press, London, UK. 978 pp.
124. Thomson, A. J. and Davies, D. M. 1974. Mapping methods for studying soil factors and earthworm distribution. Oikos 25: 199-203.
125. Tomati, U., Grappelli, A. and Galli, E. 1988. The hormone-like effect of earthworm casts on plant growth. Biol. Fertil. Soils 5: 288-294.
126. Tomlin, A. D. 1983. The earthworm bait market in North America. Pages 331-338 in J. E. Satchell, ed. Earthworm ecology: from Darwin to vermiculture. Chapman and Hall, London, UK.
127. Tomlin, A. D. and Gore, F. L. 1974. Effects of six insecticides and a fungicide on the numbers and biomass of earthworms in pasture. Bull. Environ. Contam. Toxicol. 12: 487-492.
128. Tomlin, A. D. and Miller, J. J. 1987. Composition of the soil fauna in forested and grassy plots at Delhi, Ontario. Can. J. Zool. 65: 3048-3055.
129. Tomlin, A. D., Protz, R., Martin, R. R., McCabe, D. C. and Lagace, R. J. 1993. Relationships amongst organic matter content, heavy metal concentrations, earthworm activity, and soil microfabric on a sewage sludge disposal site. Geoderma 57: 89-103.
130. VandenBygaart, A. J., Fox, C. A., Fallow, D. J. and Protz, R. 2000. Estimating earthworm-influenced soil structure by morphometric image analysis. Soil Sci. Soc. Am. J. 64: 982-988.
131. VandenBygaart, A. J., Protz, R. and Tomlin, A. D. 1999. Changes in pore structure in a no-till chronosequence of silt loam soils, southern Ontario. Can. J. Soil Sci. 79: 149-160.
132. Wallwork, J. A. 1976. The distribution and diversity of soil fauna. Academic Press, London, UK.
133. West, L. T., Hendrix, P. F. and Bruce, R. R. 1991. Micromorphic observation of soil alteration by earthworms. Agric. Ecosyst. Environ. 34: 363-370.
134. Whalen, J. K. and Parmelee, R. W. 1999. Quantification of nitrogen assimilation efficiencies and their use to estimate organic matter consumption by the earthworms Aporrectodea tuberculata (Eisen) and Lumbricus terrestris L. Appl. Soil Ecol. 13: 199-208.
135. Willems, J. H. and Huijsmans, K. G. A. 1994. Vertical seed dispersal by earthworms: a quantitative approach. Ecography 17: 124-130.
136. Willoughby, G. L., Kladivko, E. J. and Savabi, M. R. 1997. Seasonal variations in infiltration rate under no-till and conventional (disk) tillage systems as affected by Lumbricus terrestris activity. Soil Biol. Biochem. 29: 481-484.
137. Willoughby, G. L. and Kladivko, E. J. 2002. Water infiltration rates following reintroduction of Lumbricus terrestris into no-till fields. J. Soil Water Conserv. 57(2): 82-88.
138. Wolters, V. and Schaefer, M. 1993. Effects of burrowing by the earthworm Aporrectodea caliginosa (Savigny) on beech litter decomposition in an agricultural and in a forest soil. Geoderma 56: 627-632.
139. Wright, H. E. and Frey, D. G. 1965. The Quarternary of the United States. Princeton University Press, Princeton, NJ. 922 pp.
140. Zachmann, J. E., Linden, D. R. and Clapp, C. E. 1987. Macroporous infiltration and redistribution as affected by earthworms, tillage and residue. Soil Sci. Soc. Am. J. 51: 1580-1586.