bombus: _Bombus vosnesenskii_ colony growth and estimated floral...

bombusR Documentation

Bombus vosnesenskii colony growth and estimated floral resources

Description

This is a subset of the data from Crone and Williams, 2016. Bombus vosnesenskii colonies were placed in sites in a mixed agricultural–natural area in California, USA and weighed weekly.

Usage

bombus

Format

A data frame with 178 rows and 10 columns

site

The site ID

colony

The colony ID

wild

The proportion of the habitat for that site classified as wild using GIS

habitat

The habitat type. Either wild (W), organic agriculture (O), or conventional agriculture (C)

date

The calendar date the measurements were taken on

week

Number of weeks since the initial mass was taken

mass

Colony mass, in grams

d.mass

Difference in mass from the smallest mass for each colony, in grams

floral_resources

Floral density in millions of flowers within a 2km radius around the colony, weighted as a function of distance from colony

cum_floral

Cumulative floral resources from the start of the study

Details

Floral resources (e) are weighted using the equation w = e^(-D/a) where D is the distance in meters between the resources and the colony and a is the typical flight distance for the species. This is described in further detail in Williams et al. 2012.

References

Crone, E. E., and Williams, N. M. (2016). Bumble bee colony dynamics: quantifying the importance of land use and floral resources for colony growth and queen production. Ecol. Lett. 19, 460–468. doi:10.1111/ele.12581.

Williams, N. M., Regetz, J., and Kremen, C. (2012). Landscape-scale resources promote colony growth but not reproductive performance of bumble bees. Ecology 93, 1049–1058. doi:10.1890/11-1006.1.


Aariq/bumbl documentation built on March 18, 2023, 2:09 a.m.