10.5061/DRYAD.K68N1
Gibson, David J.
Southern Illinois University Carbondale
Dewey, Justin
Southern Illinois University Carbondale
Goossens, Hélène
Southern Illinois University Carbondale
Dodd, Misty M.
Southern Illinois University Carbondale
Data from: Intraspecific variation among clones of a naïve rare grass
affects competition with an invasive forb
Dryad
dataset
2014
Population ecology
rare species
Calamagrostis porteri
Holocene
Alliaria petiolata
2014-11-27T00:00:00Z
2014-11-27T00:00:00Z
en
https://doi.org/10.1002/ece3.919
325411 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Intraspecific variation can have a major impact on plant community
composition yet there is little information available on the extent that
such variation by an already established species affects interspecific
interactions of an invading species. The current research examined the
competitiveness of clones of a globally rare but locally common native
grass, Calamagrostis porteri ssp. insperata to invasion by Alliaria
petiolata, a non-native invasive species. A greenhouse experiment was
conducted twice over consecutive years in which 15 clones from three
populations of Calamagrostis were paired with rosettes of Alliaria in pots
containing native forest soil previously uninvaded by Alliaria. Both
species showed a negative response to the presence of the other species,
although Alliaria more so than Calamagrostis. Moreover, the effect of
Calamagrostis depended upon population, and, to a lesser extent, the
individual clone paired with Alliaria. Competitive effects were stronger
in the first experiment compared with when the experiment was repeated in
the second year. The influence of Calamagrostis clones on the outcome of
the experiment varied among populations and among clones, but also between
years. Clones from one of the three populations were more influential than
clones from the other two populations. Only one of 15 clones, both from
the same population, were influential in both experiments. This research
supports a growing literature indicating that intraspecific variability
among clones of a dominant species can affect interspecific interactions,
and that such variability in a native species can affect performance of an
invading species.
Biomass dataBiomass data of aboveground (above) and belowground (below)
tissues of Calamagrostis and Alliaria plants from both years (year [1,2])
of the experiment. See ReadMe file for
details.allbiomass.xlsxCalamagrostis_Tillerno_LeafnoLeaf and tiller number
data of Calamagrostis plants from both years (year [1, 2]) of the
experiment. Rows represent data from pots. There are column headers in row
1 plus 810 rows of data. See ReadMe file for details.Alliaria_dataLeaf and
tiller number and leaf width data for Alliaria plants from both years
(year [1,2]) of the experiment. Rows represent data from pots. There are
column headers in row 1 plus 2970 rows of data. See ReadMe file for
details.
Shawnee National Forest
Illinois