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|--BeeVisit
|--BENZER
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BeeVisit

Barbara Thomson and James Thomson (State University of New York)
Screen Shots | System Requirements

BeeVisit is an interactive model of pollen transfer that enables students to evaluate the relative contributions of different pollinator species to a plant’s reproductive success. The model tracks a plant’s presentation of pollen through time; pollen may be presented gradually or all at once, and the program lets you choose from a family of power curves to model the shape of the cumulative pollen presentation curve over a set number of time intervals (usually 100). Then, “bees” of 1, 2, or 3 types are allowed to visit the plant. You specify the expected number and type of visits; this sets the probability of a visit occurring during each interval, and visits occur stochastically according to these probabilities.

You also set the fraction of the available pollen that is removed by each visitor, and the shape of a power curve describing the number of grains successfully exported to stigmas. These are fixed deterministically for each visitor type. The survival rate of pollen grains can be set by entering the fraction of grains that live on from one interval to the next.

You can run a simulation once or many times. The output consists of summaries of the amount of pollen delivered by different sets of pollinators including means and standard deviations as well as graphs and tables.

 

 

Screen Shots

Comparative data for two bee types are produced for 15 runs based on variables set by the user. The relative contributions to the reproductive success of the plant can be evaluated.

 

System Requirements

Windows 3.1

  • Windows 3.1 or later.


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