Definitions
from The Century Dictionary.
- noun Larval generation; reproduction by larvæ; a kind of heterogamy which resembles alternate generation, and is regarded as a case of precocious development of the egg in parthenogenesis. It has been shown to occur in the larvæ of certain gall-flies, Cecidomyia, etc.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology Process of the
formation ofsoil . - noun biology
Larval orpreadult reproduction in someinsects .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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His main scientific interests are: forest pedology, influence of plants on pedogenesis, mineral weathering in soil, carbon sequestration in forest soils, effects of forest fires on soil properties.
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Instead, pedogenesis is more influenced by factors like parent material, topography, vegetation, and time.
Soil 2008
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The processes of desert pedogenesis are distinctly expressed in the southern part of the ecoregion.
Kazakh semi-desert 2008
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The influence of parent material on pedogenesis is usually related to soil texture, soil chemistry, and nutrient cycling.
Soil 2008
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Living organisms have a role in a number of processes involved in pedogenesis including organic matter accumulation, profile mixing, and biogeochemical nutrient cycling.
Soil 2008
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Late in the 19th century, scientists Hilgard in the United States and the Russian Dukuchaev both suggested independently that pedogenesis was principally controlled by climate and vegetation.
Soil 2008
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Additional natural factors that could contribute to a different degree to pedogenesis are spontaneous fires, earthquakes, tsunami, volcanism, and impacts of meteorites.
Soil forming factors 2007
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In an increasingly populated planet, humans must be necessarily included among the state factors of pedogenesis because they take on increasing significance as an ecosystem variable.
Soil forming factors 2007
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In 1941, the Swiss Hans Jenny (1899 – 1992) redefined the meaning of the factors of pedogenesis, assuming that the factors were independent variables and formulating the now famous equation:
Soil forming factors 2007
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Secondary minerals form through substantial chemical or structural changes of primary minerals or de novo precipitation from ion-rich solutions during pedogenesis.
Soil forming factors 2007
reesetee commented on the word pedogenesis
Not the birth of feet--"soil evolution" or formation; the process by which soil is created. Also, a permanent larval stage with sexual development, as in certain gall midges.
May 31, 2007