Biology of the Oligochaete Bimastos zeteki Smith and Gittins (Lumbricidae) in Northern Michigan
1960; University of Notre Dame; Volume: 64; Issue: 1 Linguagem: Inglês
10.2307/2422902
ISSN1938-4238
Autores Tópico(s)Aquatic Invertebrate Ecology and Behavior
ResumoDirect analyses of earthworm populations, more often than not concerned with agricultural soils, have been largely quantitative, emphasizing population density as related to various edaphic factors. In this vein, a significant body of data has been made available through the various publications of Evans (1947; 1948), Guild (1948 through 1957), Evans and Guild (1947; 1948), Waters (1955), and Satchell (1955). In nearly every case, these authors and others, including Wilcke (1954), Julin (1949), Siivonen (1941), Boyd (1957), Bodenheimer (1935), and Bornebusch (1930), have underlined the risk involved in generalization; a risk of some magnitude when environmental factors are considered. As an example, we find Bodenheimer stating (1935):
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