Titlebook: Earthworm Ecology; From Darwin to Vermi J. E. Satchell Book 1983 Chapman and Hall Ltd 1983 ecology

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Book 1983 oriented papers contributed to the symposium, brutally edited in the interests of brevity and thematic continuity. The book opens with an appraisal of Darwin‘s earthworm work in its historical and philosophical context and relates his views on ‘vegetable mould‘ to current concepts of humus formatio

headlong

CULP

Darwin’s , — its philosophical basistly materialistic theory of organic evolution. Using consistently materialistic premises, Darwin has shown the possibility of the origin of the multitude of plants and animals and of the rise of new species as a result of the accumulation of small hereditary changes of ancestral forms. Darwin’s meth

Myosin

Darwin on earthworms — the contemporary background and what the critics thought837 he worked intensively on the material he had collected in the last five years and on he manuscripts and notes of his studies of the coasts and countries he had visited. By now his health was somewhat affected and, as he wrote to a friend, the doctors urged him strongly in 1837 to ‘knock off all

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Darwin’s ‘vegetable mould’ and some modern concepts of humus structure and soil aggregationf the genesis of humus and of its role in soils. This chapter outlines Darwin’s conclusions on the role of earthworms in the formation of vegetable mould and his interpretations of its nature and properties, especially those of its organic constituents. It discusses modern concepts of the compositio

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Organic matter turnover by earthwormserature and moisture regimes of the soil, its physical and chemical properties, and not least the populations upon whose activity the comminution, mixing and decomposition of soil organic matter eventually depend. In any particular soil these factors are inter-related and two difficulties are paramo