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#ecology methods

2 public questions tagged with this topic.

Population Ecology

Which of these is NOT a method for determining population size or density?

The keyed exception is “Allelopathy estimation.” In the context of which of these is not a method for determining population size or density, that statement differs from the governing ecological pattern and must be evaluated against the mechanism rather than accepted from wording alone. Population ecology links individual births, deaths, immigration, and emigration to changes in abundance. Per-capita rates determine the direction of change, while density dependence creates feedback when crowding alters survival or reproduction. The remaining alternatives—“Quadrat sampling”, “Mark-recapture”, “

Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology

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Population Ecology

Quadrat sampling method is primarily used to estimate population density for:

“Slow or immobile organisms” for quadrat sampling method is primarily used to estimate population density for. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Population ecology links individual births, deaths, immigration, and emigration to changes in abundance. Per-capita rates determine the direction of change, while density dependence creates feedback when crowding alters survival or reproduction. The remaining alternatives—“Large mammals”, “Fast-moving birds”, “Fish populations”—refer to diff

Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology

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