During the winter of 1999, minimum temperatures did not get much below freezing in an Oregon pond, and the following summer, large mosquito populations were observed. In the winter of 2000, frost came early and most ponds were frozen for 3 months. The following summer, very small mosquito populations were observed. This is an example of
A) ecosystem carrying capacity.
B) exotic regulation.
C) density-dependent regulation.
D) density-independent regulation.
E) community carrying capacity.

Question

Quizplus · Accepted Answer

The observed effect on mosquito populations due to variations in winter temperatures (freezing or not freezing) is an example of density-independent regulation, as these changes affect the mosquito population regardless of its density.

During the Winter of 1999, Minimum Temperatures Did Not Get