Earthworm EcologyClive A. Edwards CRC Press, 2004 M03 29 - 456 pages Earthworm Ecology, Second Edition updates the most comprehensive work available on earthworm ecology with extensive revisions of the original chapters. New chapters analyze the history of earthworm research, the importance of earthworms as representatives of soil fauna and how they affect plant growth, the effects of the invasion of exotic earthworms into North America and other regions, and vermiculture and vermicomposting in Europe.This well-illustrated, expansive study examines the important and often overlooked impact earthworms have on the environment. It discusses the impact of climate, soil properties, predation, disease and parasitism, and competition upon earthworm ecology. |
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Page 5
... feeding, earthworms promote microbial activity by an order of magnitude, which in turn also accelerates the rates of breakdown and stabilization of mimic fractions of organic matter. Different species of earthworms do not affect soil ...
... feeding, earthworms promote microbial activity by an order of magnitude, which in turn also accelerates the rates of breakdown and stabilization of mimic fractions of organic matter. Different species of earthworms do not affect soil ...
Page 7
... feeding by earthworms, the carbon:nitrogen ratio in the organic matter falls progressively; moreover, most of the nitrogen is converted into the ammonium or nitrate form. At the same time, the other nutrients, phosphorus and potassium ...
... feeding by earthworms, the carbon:nitrogen ratio in the organic matter falls progressively; moreover, most of the nitrogen is converted into the ammonium or nitrate form. At the same time, the other nutrients, phosphorus and potassium ...
Page 18
... feeding and digestive habits of the earthworms; the physical effects are associated mainly with the structural properties of the drilosphere. The following sections in this chapter explore the various ways in which earthworms can ...
... feeding and digestive habits of the earthworms; the physical effects are associated mainly with the structural properties of the drilosphere. The following sections in this chapter explore the various ways in which earthworms can ...
Page 19
... feeding and digestive processes or indirectly by burrowing and casting activities , which change root growth and development and the soil envi- ronment , thereby making it more or less favorable to the development of microorganisms ...
... feeding and digestive processes or indirectly by burrowing and casting activities , which change root growth and development and the soil envi- ronment , thereby making it more or less favorable to the development of microorganisms ...
Page 20
... feeding insects) 4. Root abbrasion and ingestion of living plant parts by earthworms (feeding and/or ingestion by earthworms of living roots or plant shoots, and direct damage to growing roots) 5. Interactions between earthworms and ...
... feeding insects) 4. Root abbrasion and ingestion of living plant parts by earthworms (feeding and/or ingestion by earthworms of living roots or plant shoots, and direct damage to growing roots) 5. Interactions between earthworms and ...
Contents
3 | |
13 | |
Earthworm Taxonomy Diversity and Biogeography | 51 |
Chapter 3 Planetary Processes and Their Interactions with Earthworm Distributions and Ecology | 53 |
Chapter 4 The Status of Earthworm Biogeography Diversity and Taxonomy in North America Revisited with Glimpses into the Future | 63 |
Chapter 5 Invasion of Exotic Earthworms into North America and Other Regions | 75 |
Earthworm Biology Ecology Behavior and Physiology | 89 |
Chapter 6 Factors Affecting the Abundance of Earthworms in Soils | 91 |
Interactions of Earthworms with Microorganisms Invertebrates and Plants | 211 |
Chapter 12 Functional Interactions between Earthworms Microorganisms Organic Matter and Plants | 213 |
Chapter 13 Impacts of Earthworms on Other Biota in Forest Soils with Some Emphasis on Cool Temperate Montane Forests | 241 |
Earthworms in Agroecosystems | 261 |
Chapter 14 Managing Earthworms as a Resource in Australian Pastures | 263 |
Research Approaches | 287 |
Earthworms and Environemtal Pollution | 297 |
Chapter 16 Earthworms as Test Organisms in Ecotoxicological Assessment of Toxicant Impacts on Ecosystems | 299 |
Chapter 7 A Comprehensive Study of the Taxonomy and Ecology of the Lumbricid Earthworm Genus Octodrilus from the Carpathians | 115 |
Influence of Earthworms on Soil Organic Matter Dynamics Nutrient Dynamics and Microbial Ecology | 143 |
Chapter 8 Effects of Earthworms on Soil Organic Matter and Nutrient Dynamics at a Landscape Scale over Decades | 145 |
Chapter 9 Integrating the Effects of Earthworms on Nutrient Cycling across Spatial and Temporal Scales | 161 |
Effects of Earthworms on Soil Physical Properties and Function | 181 |
Chapter 10 Quantifying the Effects of Earthworms on Soil Aggreation and Porosity | 183 |
Chapter 11 Effects of Earthworms on Soil Organization | 201 |
Chapter 17 Earthworms in Environmental Research | 321 |
Earthworms in Waste Management | 343 |
Chapter 18 The Use of Earthworms in the Breakdown of Organic Wastes to Produce Vermicomposts and Animal Feed Protein | 345 |
Natures Gift for Utilization of Organic Wastes in Asia | 381 |
Chapter 20 StateoftheArt and New Perspectives on Vermicomposting Research | 401 |
Index | 425 |
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Common terms and phrases
aggregates Agric agricultural agroecosystems anecic Apuseni Mountains assessment Australia Baker Biochem biogeography biological biomass caliginosa carbon chemical cocoons composting corethrurus crop decomposition Dendrobaena distribution Doube dynamics earthworm activity earthworm biomass earthworm burrows earthworm casts earthworm communities Earthworm Ecology earthworm gut earthworm invasions earthworm populations earthworm species earthworms on soil ecosystems Ecotoxicology Edwards and Bohlen effects of earthworms Eisenia fetida Environ environmental epigeic exotic earthworms factors feeding Fertil field fungal fungi Glossoscolecidae grassland Hendrix impacts increased influence ingested Interactions between Earthworms invertebrates laboratory Lavelle litter Lumbricidae Lumbricus rubellus Lumbricus terrestris Megascolecidae microbial activity microbial biomass microorganisms mineral nematodes nitrogen Octodrilus species Oligochaeta organic wastes pastures Pedobiologia plant growth potential processes production rates residues Reynolds rhizosphere role of earthworms root rubellus Scheu Second Edition sludge Soil Biol Soil Biology soil organic matter Soil Sci soil structure soil surface species of earthworms studies tropical vermicomposting Vermiculture worms
Popular passages
Page 14 - Earth-worms, though in appearance a small and despicable link in the chain of nature, yet, if lost, would make a lamentable chasm. For, to say nothing of half the birds, and some quadrupeds which are almost entirely supported by them, worms seem to be the great promoters of vegetation...
Page 14 - ... worms seem to be the great promoters of vegetation, which would proceed but lamely without them, by boring, perforating, and loosening the soil, and rendering it pervious to rains and the fibres of plants, by drawing straws and stalks of leaves and twigs into it; and, most of all, by throwing up such infinite numbers of lumps of earth called worm-casts, which, being their excre105 ment, is a fine manure for grain and grass.
Page 183 - For, to say nothing of half the .birds, >and some quadrupeds, which are almost entirely supported by them, worms seem to be the great promoters of vegetation, which would proceed but lamely without them, by boring, perforating, and loosening the soil, and rendering it pervious to rains and the fibres of plants, by drawing straws and stalks of leaves and twigs into it, and, most of all, by throwing up such infinite numbers of lumps of earth called worm- casts, which, being their excrement, is a fine...
Page 14 - Gardeners and farmers express their detestation of worms ; the former because they render their walks unsightly, and make them much work ; and the latter because, as they think, worms eat their green corn. But these men would find that the earth without worms would soon become cold, hard-bound, and void of fermentation, and consequently sterile...
Page 120 - A subspecies is an aggregate of phenotypically similar populations of a species, inhabiting a geographic subdivision of the range of the species, and differing from other populations of the species.
Page 316 - Report of the second stage in development of a standardized laboratory method for assessing the toxicity of chemical substances to earthworms.
Page 320 - Van Gestel, CAM, Van Dis, WA, Van Breemen, EM and Sparenburg, PM (1989). Development of a standardized reproduction toxicity test with the earthworm species Eisenia andrei using copper, pentachlorophenol and 2,4dichloroaniline.
Page 109 - U. and Lofs-Holmin, A. 1986. Growth of earthworms (Allolobophora caliginosa) fed shoots and roots of barley, meadow fescue and lucerne. Studies in relation to particle size, protein, crude fibre content and toxicity, Pedobiologia, 29, 1-12.
Page 235 - Jenkinson, DS, and JN Ladd. 1981. Microbial biomass in soil: measurement and turnover, p.
Page 199 - Shipitalo, MJ, WM Edwards, WA Dick, and LB Owens. 1990. Initial storm effects on macropore transport of surface-applied chemicals in no-till soil. Soil Sci. Soc. Am. J.
References to this book
Invertebrates as Webmasters in Ecosystems David C. Coleman,Paul F. Hendrix No preview available - 2000 |