Detecting the effects of introduced species: A case study of competition between Apis and Bombus

Article Abstract:

Data from an experimental test of introduced honey bee (Apis mellifera) impacts on native bumble bees (Bombus spp.) is used to address the question of how well these more commonly and easily measured indices of competition predicted the observed effects on colonies. Findings reveal that observational data on spatial and temporal correlations in particular were both highly variable and did not predict the outcome of experimental study manipulations.

California, Public affairs, Animal specialties, not elsewhere classified, Apiculture, Honey Bees, Social aspects, Behavior, Honeybee, Colonies (Biology), Bumblebees, Resource partitioning (Ecology)

---

Snakes don't shrink, but 'shrinkage' is an almost inevitable outcome of measurement error by the experiments

Article Abstract:

Decreasing in body size in snakes up to 20% of their initial size during periods of reduced food availability has induced to speculate whether these shrinkages are adaptive or not and whether they are not in squamate reptiles living in seasonally variable environments. It is found that shrinkage events are just apparent in snakes and are caused by measurement errors by experimenters.

---

Why don't small snakes bask? Juvenile broad-headed snakes trade thermal benefits for safety

Article Abstract:

An investigation on whether predation risk constrains thermoregulation in the nocturnal broad-headed snake Hoplocephalus bungaroides is presented. Results suggest that juvenile broad-headed snakes do not bask during autumn due to high risk of avian predation associated with this activity.

Physiological aspects

Similar abstracts:

• Abstracts: On the indices of plant-plant competition and their pitfalls. Importance of large and small mammalian herbivores for the plant community structure in the forest tundra ecotone
• Abstracts: Partitioning the effects of algal species identity and richness on benthic marine primary production. Landscape-scale patterns of biological invasions in shoreline plant communities
• Abstracts: Detritivory and the stoichiometry of nutrient cycling by a dominant fish species in lakes of varying productivity
• Abstracts: Fishermen's interest and cooperation: Preconditions for joint management of Swedish coastal fisheries. Local fisheries management at the Swedish coast: Biological and social preconditions
• Abstracts: The role of nectar sources for oviposition decisions of the common blue butterfly Polyommatus icarus. Conservative resource utilization in the common blue butterfly - evidence for low costs of accepting absent host plants?

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.