Functional response: Rigorous estimation and sensitivity to genetic variation in prey
Article Abstract:
A rigorous experimental design is applied where prey density is maintained as a constant in order to investigate how accurate parameter estimation is compared to direct measurement on individuals and how sensitive the disc equation parameters are to generic variation in prey. The issue of whether prey number and patch size can affect functional response in addition to prey density is addressed.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Prey selection by wild birds can allow novel and conspicuous color morphs to spread in prey populations
Article Abstract:
The wild birds with artificial pastry prey that were colored using food coloring are presented in the color preference experiments. These experiments showed that the immediate demise of a fully palatable new prey morph is not an inevitable outcome of predator behavior, because even very conspicuous prey can gain protection from conservative foragers, simply by being novel.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
Nonlinear and population-specific offspring sex ratios in relation to high variation in prey abundance
Article Abstract:
Variations in brood sex ratio at fledging in two adjacent harrier populations for respectively 16- and 8-year surveys of both the predator and its prey is analyzed. The results point out that sex ratio analyses should take into account population characteristics, and more generally, environmental variations both in space and time.
Publication Name: Oikos
Subject: Environmental issues
ISSN: 0030-1299
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Suitability of stressed and vigorous plants to various insect herbivores. When do herbivores affect plant invasion? Evidence for the natural enemies and biotic resistance hypothesis
- Abstracts: 'Biohyets': A method for displaying the extent and severity of environmental impacts. Assessing soil biodiversity across Great Britain: national trends in the occurrence of heterotrophic bacteria and invertebrates in soil
- Abstracts: Nest predation and habitat change interact to influence Siberian jay numbers. Competition, predation and species responses to environmental change
- Abstracts: Behavioural and life history traits in temporary and perennial waters: Comparisons among three pairs of sibling dragonfly species