2017 Update: Seedling establishment

In 2017, we checked 119 focal plants at 12 remnants for nearby seedlings found in previous years. We found 123 out of the original 955 seedlings (25 fewer than the 148 found last fall). Although challenging to obtain, information about the early stages of E. angustifolia in remnants is valuable.

Generations of Echinacea: A fallen head dropped achenes that have germinated. How many seedlings do you see?

These data tell us how many years it takes plants to flower (a LONG time!) and the mortality rate for seedlings in remnants.

Between the summers of 2007 and 2013, team Echinacea observed the recruitment of Echinacea angustifolia seedlings around focal plants at 13 different prairie remnants. The locations of these seedlings were mapped relative to each focal plant and the seedlings (now former seedlings) are revisited each year. For each of these former seedlings, we make a record each year updating its status (e.g., basal, not found), rosette count, and leaf lengths. We also try to update the maps, which are kept on paper and passed down through the years.

Year started: 2007

Location: East Elk Lake Road, East Riley, East of Town Hall, KJ’s, Loeffler’s Corner, Landfill, Nessman, Riley, Steven’s Approach, South of Golf Course remnants and Staffanson Prairie Preserve.

Overlaps with: Demographic census in remnants

Data collected:

  • Electronic records of status, leaf measurements, rosette count, and 12-cm neighbors for each seedling. Currently in Pendragon database
  • Updated paper maps with status of searched-for plants and helpful landmarks

Products: Amy Dykstra used seedling survival data from 2010 and 2011 to model population growth rates as a part of her dissertation.

You can read more about the seedling establishment experiment and links to previous flog entries about the experiment on the background page for this experiment.





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