uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/6f2ccc4a868889342384b362dd995527 Kristina Stinson Dunbar Carpenter https://orcid.org/0000-0001-7102-9431 Researcher Alexandra Mushegian https://orcid.org/0000-0002-7898-5407 Researcher 2023 English

The susceptibility of a site to invasion by nonnative species depends on its current ecological features and its historical land use. Certain environments might be more conducive to an invasive plant’s success, and several recent studies have shown that former agricultural sites are more susceptible to invasion than sites that have been continuously wooded. We studied the invasive herb garlic mustard (Alliaria petiolata), at roadside forested edges. Site selection was stratified by two regions with distinct ecological characteristics (the Connecticut River Valley and the Berkshire Valley in Massachusetts), and two historical land uses (wooded versus cleared in 1830).

history invasive species land use population dynamics LTER controlled vocabulary populations LTER core area Harvard Forest HFR LTER USA HFR default

This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.

Creative Commons Zero v1.0 Universal https://spdx.org/licenses/CC0-1.0.html CC0-1.0 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf181 Western Massachusetts. Coordinates based on WGS84 datum. -73.4 -72.3 +42.7 +42.0 2006 2007 genus Alliaria species petiolata garlic mustard complete Information Manager Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 hf-im@lists.fas.harvard.edu Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu

We recorded the presence and absence of garlic mustard at random selected roadside forest edges. We also searched for garlic mustard in a 100 x 25 m understory area adjacent to the forest edge. Sites were surveyed in 2006 and 2007.

Harvard Forest

324 North Main Street Petersham MA 01366 USA

(978) 724-3302 (978) 724-3595 https://harvardforest.fas.harvard.edu https://ror.org/059cpzx98 pointOfContact The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210. hf181-01-ecoregion.csv garlic mustard ecoregion hf181-01-ecoregion.csv 8255 f454c6a41914ea94a3b4a5fd325c1577 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p18/hf181/hf181-01-ecoregion.csv site arbitrary site ID assigned to each site numeric id of location surveyed occur.edge presence or absence of garlic mustard on roadside forest edge 0 absent 1 present incur.distance distance of garlic mustard incursion into the understory meter 0.1 real NA missing value incur.understory presence or absence of garlic mustard incursion into understory if garlic mustard occurred on forest edge 0 absent 1 present other.inv presence or absence of invasive plants other than garlic mustard 0 absent 1 present dist.recent presence or absence of recent or continual disturbance. Includes things like dumping, edge maintenance, canopy gaps, recent thinning/cutting (i.e. new stumps), trails and other signs of recent or ongoing disturbance 0 absent 1 present dist.past presence or absence of past disturbance based on evidence such as stone walls, even-aged stand structure, old stumps, abandoned roads, abandoned structures, and other signs of past land use 0 absence 1 present hydro presence or absence of hydrological features involving moving water including streams, rivers, ditches, channels, ponds, reservoirs, lakes, and culverts, but not including the likes of wetlands, vernal pools, or hydric soils 0 absent 1 present lulc1830 land use cover from 1830 forest cover GIS layer 1 open 0 wooded ecoreg ecoregion BV Berkshire Valley CV CT River Valley elev elevation meter 1 whole NA missing value lat latitude (UTM) meter 1 whole NA missing value lon longitude (UTM) meter 1 natural NA missing value 183 invasive short-term measurement https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf122 https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf079 wattPerMeterSquared meterPerKilometerSquared