Drought mildly reduces plant dominance in a temperate prairie ecosystem across years

Simple item page
dc.contributor.authorCastillioni, Karen
dc.contributor.authorWilcox, Kevin
dc.contributor.authorJiang, Lifen
dc.contributor.authorLuo, Yiqi
dc.contributor.authorJung, Chang Gyo
dc.contributor.authorSouza, Lara
dc.date.accessioned2020-07-10T19:26:55Z
dc.date.available2020-07-10T19:26:55Z
dc.date.issued2020-06-01
dc.description.abstract1. Shifts in dominance and species reordering can occur in response to global change. However, it is not clear how altered precipitation and disturbance regimes interact to affect species composition and dominance. 2. We explored community‐level diversity and compositional similarity responses, both across and within years, to a manipulated precipitation gradient and annual clipping in a mixed‐grass prairie in Oklahoma, USA. We imposed seven precipitation treatments (five water exclusion levels [−20%, −40%, −60%, −80%, and −100%], water addition [+50%], and control [0% change in precipitation]) year‐round from 2016 to 2018 using fixed interception shelters. These treatments were crossed with annual clipping to mimic hay harvest. 3. We found that community‐level responses were influenced by precipitation across time. For instance, plant evenness was enhanced by extreme drought treatments, while plant richness was marginally promoted under increased precipitation. 4. Clipping promoted species gain resulting in greater richness within each experimental year. Across years, clipping effects further reduced the precipitation effects on community‐level responses (richness and evenness) at both extreme drought and added precipitation treatments. 5. Synthesis: Our results highlight the importance of studying interactive drivers of change both within versus across time. For instance, clipping attenuated community‐level responses to a gradient in precipitation, suggesting that management could buffer community‐level responses to drought. However, precipitation effects were mild and likely to accentuate over time to produce further community change.en_US
dc.description.peerreviewYesen_US
dc.description.sponsorshipOpen Access fees paid for in whole or in part by the University of Oklahoma Libraries. This study was financially supported by NSF Office of Experimental Program to Stimulate Competitive Research (OIA‐1301789) and Office of the Vice President for Research, University of Oklahoma.en_US
dc.identifier.citationCastillioni, K., Wilcox, K., Jiang, Lifen, Luo, Y., Jung, C.G. & Souza, L. (2020). Drought mildly reduces plant dominance in a temperate prairie ecosystem across years. Ecology and Evolution, 10(12). doi:10.1002/ece3.6400en_US
dc.identifier.doi10.1002/ece3.6400en_US
dc.identifier.urihttps://hdl.handle.net/11244/325159
dc.languageen_USen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectClimate Changeen_US
dc.subjectClippingen_US
dc.subjectDisturbanceen_US
dc.subjectDrought-Neten_US
dc.subjectSpecies Reorderingen_US
dc.subjectMixed-grass Prairieen_US
dc.titleDrought mildly reduces plant dominance in a temperate prairie ecosystem across yearsen_US
dc.typeArticleen_US
ou.groupCollege of Arts and Sciences::Department of Microbiology and Plant Biologyen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Castillioni_20202_DroughtMildlyReducesPlantDominance.pdf
Size:
774.57 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.72 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

OU - Faculty and Staff Publications