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Their Ecology and Relationships with Soils and Land Use
出版Academic Press, 1985
主題Science / Life Sciences / Zoology / GeneralScience / Life Sciences / Zoology / Invertebrates
ISBN01244086059780124408609
URLhttp://books.google.com.hk/books?id=C4bwAAAAMAAJ&hl=&source=gbs_api
註釋Earthworms and their environment. The nature of earthworms. The soil environment. Basic environmental requirements of earthworms. Food and digestive capabilities. The physical environment. Water relationships. Temperature. Respiratory requirements and adaptations. Light. Soil texture. The chemical environment. Carbon, nitrogen and C:N ratio. ph. Electrolyte concentrations. Oxidation-reduction potentials. Earthworms in aquatic habitats. Phenology. Life cycles. Age structure of populations. Rhythmic behaviour patterns. Populations and associations. Abundance and biomass. Species associations. Ecological of earthworm populations. Ecological energetics of earthworms. Predators, parasites and pathogens. Predation on earthworms. Parasites and pathogens. Dispersal. Peregrine species. Altitudinal zonation. Physical effects on soils. Casts. Burrows. Chemical effects on soils. Contribution to organic matter incorporation and decomposition. Nitrogen transformations due to earthworms. Phosphorus. pH and exchangeable cations. Heavy metals. Radioactive elements. Earthworms and pedogenesis. Effects on soil profile development. Earthworms and landscape processes. Earthworms and plant growth. Promotion of plant growth. Influence on soil fertility and effectson plant production. Production of metabolites that stimulate plant growth. Production of other biologically active substance. Ingestion, egestion and viabillity of seeds. Relationships with plant pathogens. Earthworms and land use practices. Land clearence and revegetation. Cultivation. Mulching. Irrigation. Fertilizers. Biocides and earthworms. Use of earthworms for waste disposal. Suitable earthworm species. Methods of waste disposal. Earthowrms as a protein source. Nutrient contentand food quality of earthowrms. Economic problems. Disease hazards. Heavy metal and biocide toxicity. Appendix field sampling methods. Passive methods. Behavioural methods. Mark-recapture methods. Counting casts. Summary of sampling methods. Biomass estimation.