Numerous recent studies have tested the effects of plant, pollinator, and predator diversity
on primary productivity, pollination, and consumption, respectively. Many have shown a …

Numerous studies have demonstrated that diverse predator assemblages can be more
effective at controlling prey populations. Yet, other studies have shown no effect of predator …

Creating multiyear cycles in population density demands, in traditional models, causal
factors that operate on local populations in a density‐dependent way with time lags …

Within Fennoscandia, two well‐studied groups of herbivores exhibit clear geographical
gradients in their population dynamics. Populations of a forest lepidopteran (Epirrita …

Among the factors contributing to defoliator population fluctuations the possible role of plant
defenses depends on how defenses (secondary compounds, primary compounds, and …

Numerous studies conducted in agro-ecosystems support the enemies hypothesis, which
states that predators and parasites are more efficient in controlling pest densities in …

Natural pest control by predators and parasitoids is an important ecosystem service
supporting crop production. It is now well known that the proportion of semi-natural habitats …

We conducted a two‐year predator‐exclusion study to assess the magnitude and timing of
larval predation in non‐outbreaking populations of a geometrid moth, Epirrita autumnata …

Over 3400 larvae of the polyphagous ground dwelling arctiid Grammia geneura were
sampled and reared over seven generations in order to characterise its parasitoid …

During population outbreaks, top‐down and bottom‐up factors are unable to control
defoliator numbers. To our knowledge, details of biotic interactions leading to increased …