Abstract
Populations of Delphinium nelsonii have been shown to be patchy with regard to standing crop of nectar available to pollinators (Pleasants and Zimmerman 1979). Plants with relatively large amounts of nectar ("hot plants") are associated with other hot plants while plants with relatively small amounts of nectar ("cold plants") are found near other cold plants. Two possible explantations for this pattern exist: 1. Plants in close proximity to one another may have similar nectar production rates or; 2. The patterns of foraging bumblebees might create the observed nectar distribution pattern. By sampling standing crop of nectar in a D. nelsonii population during periods of both high and low bumblebee abundance evidence was gathered indicating that hot and cold spots are caused by bumblebees.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
