Over its decade-plus of operations, the ABMI has generated a comprehensive dataset on Alberta’s species, their habitats, and the extent and type of human footprint across the province. With this information, the ABMI has developed analyses to predict species' relative abundances and examine species' responses to vegetation and soil types, as well as human footprint in Alberta. These methods have been applied to hundreds of species; this profile provides summary results for one.
Prairie Crocus is strongly associated with native prairie habitat, and can also be found in dry open woodlands with sandy soil.
Linear Footprint Graph: Species relative abundance predicted for habitat with no human footprint compared to habitat in which 10% of the area is converted to either soft or hard linear footprint.
If it is not possible to create complex habitat association models for a given species, we present a coarse index of habitat use that represents the proportion of detections in each native vegetation, soil, and human footprint type in comparison to the proportional availability of the habitat types.
Use-availability index graph: Index of species habitat use based on the proportion of species detections in each native vegetation and human footprint type in comparison to the habitat availability. The index (bars) range from -1 (avoidance) to +1 (preference), given availability of a particular vegetation or human footprint type.
Prairie Crocus has a high tolerance for grazing but is negatively affected by cultivation and the presence of invasive species.
Figure: Under-footprint Effects. Percentage change in Anemone patens relative abundance inside areas that have been disturbed by each sector in the prairie region. Dot above bar indicates change in abundance is greater than 100%. Refer to value above or below the bar for the estimated under-footprint effect.
To understand how the Anemone patens is impacted by specific development activities, the under-footprint figure shows how Anemone patens relative abundance is predicted to change within each sector's footprint compared to the habitat it replaced (Figure: Under-footprint Effects).
Figure: Regional Sector Effects. Percentage change in Anemone patens relative abundance throughout the prairie region due to the respective footprints of each sector. Refer to value above or below the bar for the estimated regional effect.
The Regional Sector Effects graph shows the predicted change in the total relative abundance of the Anemone patens across the prairie region due to each sector's footprint, considering the: area of the footprint in the region, under-footprint effect, and habitat types impacted by a particular sector (Figure: Regional Sector Effects).
Prairie Crocus is most commonly found in the Grassland and Parkland Natural Regions.
Budd, A.C. 1987. Budd's Flora of the Canadian Prairie Provinces. Second Edition. Agriculture Canada, Hull, QC.
Moss, E.H. 1994. Flora of Alberta. Second Edition. University of Toronto Press, Toronto, ON.
Williams, J.L., and E.E. Crone. 2006. The impact of invasive grasses on the population growth of Anemone patens, a long-lived native forb. Ecology 87(12):3200-3208.
Data collected by ABMI.
Alberta Biodiversity Monitoring Institute. 2019. Prairie Crocus (Anemone patens). ABMI Website: abmi.ca/home/data-analytics/biobrowser-home/species-profile?tsn=99004768.
Alberta Biodiversity Monitoring Institute. 2016. ABMI Species Website Manual, Version: 2016-12-02. Alberta Biodiversity Monitoring Institute, Alberta, Canada. Report available at: abmi.ca.
Alberta Biodiversity Monitoring Institute. 2014. Manual for Species Modeling and Intactness, Version 2014-09-25. Alberta Biodiversity Monitoring Institute, Alberta, Canada. Report available at: abmi.ca.
Alberta Biodiversity Monitoring Institute. 2014. Terrestrial field data collection protocols (abridged version) 2016-05-18. Alberta Biodiversity Monitoring Institute, Alberta, Canada. Report available at: abmi.ca.
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