The hypothesis that predispersal seed predators preferentially attack high-quality flowers, potentially masking negative effects of environmental stressors
Predicts that species interactions should disappear at the stressful end of environmental gradients where abiotic conditions constrain species ranges
The hypothesis that animals allocate less time to antipredator vigilance as a function of increasing numbers of animals foraging together
Hypothesis that parasitism of dominant plant species reduces their competitive ability, allowing less competitive species to increase in abundance
Species with greater primary production exert the main controls for the functioning of ecosystems due to greater aboveground abundance of biomass or leaf area that promotes resource uptake
The concept that higher trophic levels are more sensitive to environmental change due to their smaller population sizes and greater environmental demands
The hypothesis that secondary metabolites in certain pollen types provide protection against natural enemies