The Allee effect describes a scenario in which populations at low numbers are affected by a
positive relationship between population growth rate and density, which increases their …

Recent long-term studies of population ecology of large herbivorous mammals suggest that
survival of prime-aged females varies little from year to year and across populations …

Metapopulation is the ecological term for assemblages of plant and animal species within
larger areas of space, with long-term survival of the species depending on a shifting balance …

Allee effects are (broadly) defined as a decline in individual fitness at low population size or
density. They can result in critical population thresholds below which populations crash to …

Insects are by far the most diverse group of organisms on Earth; estimates of their current
diversity range as high as 30 million species (58). A large fraction of these species feed on …

Despite often violent fluctuations in nature, species extinction is rare. California red scale, a
potentially devastating pest of citrus, has been suppressed for fifty years in California to …

SEVERAL recent reviews of published life tables1–3 concluded that density-dependent
regulation is infrequent in insect populations, prompting a vigorous debate among eco …

Population regulation is one of the central organizing themes in ecology (Dennis and Taper,
1994; Murdoch, 1994). Yet, ever since the concept of population regulation by density …

This book addresses the fundamental issues of predator-prey interactions, with an emphasis
on predation among arthropods, which have been better studied, and for which the …

Introduces the speech of MP Hassell, member of the Department of Biology of Imperial
College in London, England presented at the British Ecological Society about the dynamics …