The evolution of" niche breadth," or" niche width," was a more popular topic in the
evolutionary ecological literature of the 1960s and 1970s than it has been recently (109 …

Multivariate analysis provides statistical methods for study of the joint relationships of
variables in data that contain intercorrelations. Because several variables can be …

Biodiversity is organised into complex ecological networks of interacting species in local
ecosystems, but our knowledge about the effects of habitat fragmentation on such systems …

Bumblebees are familiar and charismatic insects, occurring throughout much of the world.
They are increasingly being used as a model organism for studying a wide range of …

Bumblebees have always been favoured subjects for scientific study, and research has
accelerated in recent years. Many new discoveries have been made with regard to their …

The development of diverse reproductive structures has been one of the major factors in the
evolution of the angiosperms (11, 78, 90). This diversity of reproductive structures, especially …

Bumblebees (Bombus spp.) have been declining rapidly in many temperate regions of the
Old World. Despite their ecological and economic importance as pollinators, North American …

Plant–pollinator interactions are based on mutual benefits; the plant gains fertilization and
the pollinator gains food resources. But aside from providing rewards, flowers can be risky …

The increased use of pesticides has caused concern over the possible direct association of
exposure to combinations of these compounds with bee health problems. There is growing …

Biological invasions represent both an increasingly important applied problem and a tool for
gaining insight into the structure of ecological communities. Although competitive …