Landscape characterization of floral resources for pollinators in the Prairie Pothole Region of the United States

Biodiversity and Conservation
By: , and 



Across agricultural areas of the Prairie Pothole Region (PPR), floral resources are primarily found on public grasslands, roadsides, and private grasslands used as pasture or enrolled in federal conservation programs. Little research has characterized the availability of flowers across the region or identified the primary stakeholders managing lands supporting pollinators. We explored spatial and temporal variability in flower abundance and richness across multiple grassland categories (i.e. general grassland, conservation grassland, and engineered pollinator habitat) in the PPR from 2015 to 2018 and used these data to estimate the number of flowering stems present across the region on private and public land holdings. Both flowering plant abundance and richness were greatest on engineered pollinator habitat, but this land category encompassed <0.01% of the total grassland area in the PPR. There was a steady decrease in flower abundance over the growing season across all land categories. We detected considerable variation in flower abundance and richness across grassland categories, indicating that not all natural or semi-natural covers provide similar value to pollinators. At a landscape scale, large land holdings such as privately-owned grasslands and Conservation Reserve Program lands contributed the greatest number of flowers by an order of magnitude, though these lands collectively did not support the greatest abundance of flowers per unit area. Our research depicts spatial and temporal variation in pollinator resources across the region. Further, our research will assist managers and policy makers in understanding the role of public and private lands and conservation programs in supporting pollinators.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Landscape characterization of floral resources for pollinators in the Prairie Pothole Region of the United States
Series title Biodiversity and Conservation
DOI 10.1007/s10531-021-02177-9
Volume 30
Year Published 2021
Language English
Publisher Springer
Contributing office(s) Earth Resources Observation and Science (EROS) Center, Northern Prairie Wildlife Research Center
Description 25 p.
First page 1991
Last page 2015
Country United States
State Minnesota, North Dakota, South Dakota
Other Geospatial Prairie Pothole Region
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