9.1. Introduction. Main Problems

Some populations have considerable oscillations in their numbers. There are well-known cycles in rodent populations. Many insect pests have regular or irregular outbreaks, e.g., larch budmoth in Switzerland, spruce budworm in Canada, gypsy moth in Europe and in USA.

Example: Gypsy moth population dynamics in Yugoslavia:

Gypsy moth numbers increased by several orders of magnitude. Pest outbreaks resulted in forest defoliation in large areas.

Main Problems:

  • To evaluate population stability using models
  • To examine effects of different factors on population stability

Alexei Sharov 1/12/96