2021 Update: Community flowering phenology in remnants

In 2021, Lea Richardson conceived and initiated a 2-year study designed to test how fire affects community flowering phenology in remnant prairies in MN. We randomly sampled points in burned and unburned remnants for a total of 294 points. In a 1m radius around each random point, the number of flowering stems were counted for every plant species present in the circle twice a week from July 1-August 31. For some species, the radius extended past 1m. Random points used in this study were the same points used in the stipa project as well as other projects associated with Jared Beck’s postdoc studying fire in remnants. Lea also obtained estimates of total number of flowering plants of certain species for the whole site if the species in question was not in any of the random circles placed on the site (these additional observations should allow for more accurate flowering abundance curves to be obtained). Sites were divided into two driving routes with roughly half of the points visited on Monday and Thursday, and the other half visited Tuesday and Friday. This sampling protocol for the same sites will be repeated in 2022 to be able to compare points with and without fire across two years and among sites. Over 100 flowering species were identified within the circles. Data analysis will proceed on this first year of data in Spring 2022 and will be included as Chapter 4 of Lea’s dissertation.

  • Start year: 2021
  • Location: Remnants including: eri.n, rrx.w, lc.w, lc.e, yoh.e, yoh.w, aa.s, aa.n, sgc, eelr, kj, nnwlf, lf.w, lf.e, sap.w, sap.e, dog, on27, spp.w, spp.e
  • Overlaps with: Hesperostipa fire and flowering, prescribed fire in remnants, random points in remnants
  • Data collected: community phenology data, using visor form ptPhen (all data in aiiSummer2021 repo in ptPhen folder)
  • Samples or specimens collected: none
  • Products: [eventually] chapter 4 of Lea Richardson’s dissertation and hopefully a manuscript after 2022 data collection

You can read more about the community flowering phenology in remnants experiment, as well as links to prior flog entries about this experiment, on the background page for this experiment.


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