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2 August 2021 Forty Years of Increasing Precipitation is Correlated with Loss of Forbs in a Tallgrass Prairie
Lauren A. Dennhardt, Laura Aldrich-Wolfe, Katie L. Black, W. Gaya Shivega, Steven E. Travers
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Abstract

The effects of climate change on plant communities are already observable in many regions. In the tallgrass region of the Northern Great Plains, plant community composition may have shifted in response to increases in both annual precipitation and temperature. We compared community composition of a tallgrass prairie among three sampling periods (1978–1979, 1998, and 2014), spanning more than three decades, in order to better understand (1) temporal shifts in plant cover and (2) which environmental variables were correlated with these changes. Basal cover of Poa pratensis increased and basal cover of forbs declined over time. The shift from a forb-rich to grass-dominated prairie was positively correlated with higher levels of precipitation and soil moisture. Our study suggests that increased precipitation due to climate change has already altered plant community composition in the Great Plains.

Lauren A. Dennhardt, Laura Aldrich-Wolfe, Katie L. Black, W. Gaya Shivega, and Steven E. Travers "Forty Years of Increasing Precipitation is Correlated with Loss of Forbs in a Tallgrass Prairie," Natural Areas Journal 41(3), 195-202, (2 August 2021). https://doi.org/10.3375/043.041.0305
Published: 2 August 2021
KEYWORDS
Bromus inermis
climate change
long-term study
Poa pratensis
Precipitation
tallgrass prairie
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