Here’s a list of plant species that flowered within 2m of a flowering Echinacea plant that we observed last year. The list is sorted by the count of inflorescences we counted. Species in the Asteraceae are highlighted.
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Here’s a list of plant species that flowered within 2m of a flowering Echinacea plant that we observed last year. The list is sorted by the count of inflorescences we counted. Species in the Asteraceae are highlighted. We’re off to a great start this season. We’ve made good progress on our ongoing projects and folks are well on their way with their independent projects. We had better keep moving because the earliest plant in the Common Garden started flowering on the 21st! Here’s a list of independent projects for Summer 2010:
I attached a pdf file of our ongoing projects. Here’s a list of plants that are available for Katie to use in inb1: Echinacea plants on our transect at Staffanson Preserve are done shedding pollen for the year. A few still have persistent, receptive styles, but August 18th was the last day pollen was shed. This graph show how many heads (left panels) or plants (right panels) finished on each day. The earliest heads finished on 15 July. I divided the preserve according to the burn unit: burned East (top panels) and unburned West (bottom panels): Final date of flowering for 393 heads on 161 Echinacea plants
from a burned and unburned unit of a prairie preserve This graph is based on preliminary, raw data, but I wanted to share. Click on the thumbnail to see a larger version of the graph. Here’s a histogram of pollen sizes (~30 grains per species) from 3 individual plants of Coreopsis palmata, Echinacea angustifolia, and Heliopsis helianthoides. Greg outlined the methods taking the measurements here. Greg, what software program did you use? A list of equipment we need for demo was posted here: https://echinaceaproject.org/wp-content/uploads/2008/08/demography.html Here’s a snippet of R code showing how to extract info from the shrivel character data (a file is below… df <- data.frame(shrivel.txt =c("x", "xoxx", "xxxx", "oooo", "xoooo")) df # start off with this data frame str(df) df$shrivel.count <- nchar(as.character(df$shrivel.txt)) #add column vx <- gsub("o", "", df$shrivel.txt) # replace o with "" vx df$shrivel.xs <- nchar(vx) # make a new column in df vo <- gsub("x", "", df$shrivel.txt) # replace x with "" vo df$shrivel.os <- nchar(vo) # make a new column in df str(df) df # final data frame In response to Caroline’s request for more locations to plant Stipa in the common garden, I have selected 208 new locations at random. This map shows the new locations in green. (Blue dots are the previously selected locations.) Here’s a file listing all 208 location. It’s suitable for making 208 labels for 208 seeds! stipaSeedLabels2.csv |
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