uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/d00665061c754109ac8ab66d6ab8ae12 Kristina Stinson Serita Frey https://orcid.org/0000-0002-9221-5919 Jason Aylward Researcher Dustin Haines https://orcid.org/0000-0003-2087-3899 Researcher 2023 English

This is a five year project that investigates the reassembly of soil fungi and native plants in forests affected by biological invasion. The experiment brings together regional land managers to create comparative eradications of garlic mustard at nine distinct sites along a natural climate and nitrogen deposition gradient in New England. This dataset represents baseline plant abundances from 2013 at nine study plots in Harvard Forest. Species richness, Shannon diversity, and Pielou’s evenness were not different between invaded and non-invaded plots at Harvard Forest.

abundance community composition invasive species plant species species diversity understory vegetation LTER controlled vocabulary populations disturbance 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=hf272 Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum. -72.190414 -72.190414 +42.529392 +42.529392 316 316 meter 2013 2013 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

Three plots each were assigned to one of three treatments: Non-invaded (plots that have no garlic mustard), Invaded (plots with garlic mustard), and Pulled (plots with garlic mustard in 2013 on which all garlic mustard plants are manually pulled in subsequent years). Reference and Pulled plots were placed in patches of garlic mustard densities of at least 20 plants per square meter. Non-invaded plots were placed within 20 meters of garlic mustard plots with similar tree canopy composition, slope, and aspect. Plots were 3×3 m (9 m2) with a central sampling area 2×2 m (4 m2). All vascular plants one meter and less in height were counted and identified to the species level. In addition, garlic mustard plants were identified as 1st or 2nd year plants. The plots were selected to represent the native vegetation but other invasive plants besides garlic mustard were encountered and were included in the survey. Plant diversity indices (richness, Shannon diversity, and Pielou’s evenness) were compared between Invaded and Non-invaded plots using generalized linear models.

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. hf272-01-plant-survey-2013.csv plant survey summer 2013 hf272-01-plant-survey-2013.csv 2968 040d1ae108386df4d13b11987e2ea677 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p27/hf272/hf272-01-plant-survey-2013.csv date date of field data collection YYYY-MM-DD NA missing value treatment plot treatment Invaded plots occupied by garlic mustard Non-invaded plots not occupied by garlic mustard Pulled plots with garlic mustard plants manually removed (by pulling them out of the ground) NA missing value replicate plot replicate number for the specific treatment type (three replicate plots each) plot replicate number for the specific treatment type (three replicate plots each) NA missing value species species acerpe Acer pensylvanicum (striped maple) acerpl Acer platanoides (Norway maple) acerru Acer rubrum (red maple) acersa Acer saccharum (sugar maple) allipe_1 Alliaria petiolata (garlic mustard) - first year plant allipe_2 Alliaria petiolata (garlic mustard) - second year plant allipe_total Alliaria petiolata (garlic mustard) - first and second year plants betupa Betula papyrifera (paper birch) dennpu Dennstaedtia punctilobula (eastern hay-scented fern) euonal Euonymus alatus (burning bush) eurydi Eurybia divaricata (white wood aster) fraxam Fraxinus americana (white ash) HF_Unk_2 unidentified species ilexve Ilex verticillata (common winterberry) maiaca Maianthemum canadense (Canada mayflower) maiara Maianthemum racemosum (feathery false lily of the valley) onocse Onoclea sensibilis (sensitive fern) prunse Prunus serotina (black cherry) querru Quercus rubra (northern red oak) querve Quercus velutina (black oak) trilsp Trillium sp. (trillium) Unk_opp_seed unidentified species vibual Viburnum alnifolium (hobblebush) NA missing value abundance count data for number of individuals per species per 4 meter square (2 X 2 meter) plot (to get densities per square meter, divide these data by 4) number 1 whole NA missing value 88 biodiversity invasive plot long-term measurement