uid=HFR,o=lter,dc=ecoinformatics,dc=org all public read doi:10.6073/pasta/836870e77aeffcf7e4959db5490bc138 Audrey Barker Plotkin https://orcid.org/0000-0002-4473-9785 2023 English

The Harvard Forest is an iconic field station, hosting hundreds of field-based studies since it was founded in 1907. Site-based, long-term research increased sharply starting in 1988, when Harvard Forest became a Long-Term Ecological Research Site. This dataset documents the locations of most long-term research studies initiated since 1988; a few studies that began earlier and are still active are also included. Short-term studies, or studies that focus on sampling individual organisms, are not included.

maps permanent plots spatial vector LTER controlled vocabulary primary production populations organic matter inorganic nutrients 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=hf375 Harvard Forest. Coordinates based on WGS84 datum. -72.18 -72.17 +42.53 +42.47 220 410 meter 1937 2023 ongoing 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

Projected Coordinate System: NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001 Projection: Lambert_Conformal_Conic Study locations were compiled over time by the Field Site Manager. Data sources include GPS coordinates provided by investigators of specific studies, GPS coordinates collected by the Field Site Manager, and digitization of paper maps. Most study sites are polygons scaled to their actual size and shape and included in the polygon shapefile. A point shapefile includes sites that are point locations (e.g., a tower) along with one plot-based study (‘Bigfoot’) that ran from 1999-2003. Separate tables describing the field sites contained in the two shapefiles are also provided in csv format.

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. hf375-01-field-sites-points.csv field site points hf375-01-field-sites-points.csv 15411 599db205a468669341a7026e3135ec57 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p37/hf375/hf375-01-field-sites-points.csv TYPE study site for studies with multiple points study site for studies with multiple points PLOT study point name study point name Latitude latitude in decimal degrees (WGS 1984) degree 0.00001 real NA missing value Longitude longitude in decimal degrees (WGS 1984) degree 0.00001 real NA missing value Conant soil core plot; for ContostaKeiserFinzi plots only soil core plot; for ContostaKeiserFinzi plots only Autochambe respiration chambers; for ContostaKeiserFinzi plots only respiration chambers; for ContostaKeiserFinzi plots only Minirhizot minirhizotron site for root growth; for ContostaKeiserFinzi plots only minirhizotron site for root growth; for ContostaKeiserFinzi plots only Soilpit large soil pit; for ContostaKeiserFinzi plots only large soil pit; for ContostaKeiserFinzi plots only ArchiveNum Harvard Forest data archive numbers, if any (some studies have multiple archive files and sometimes only the major ones are listed if there are many) Harvard Forest data archive numbers, if any (some studies have multiple archive files and sometimes only the major ones are listed if there are many) PI principal investigator (if more than one name, then the study has successive PIs or co-PIs) principal investigator (if more than one name, then the study has successive PIs or co-PIs) StartDate year study began YYYY NA missing value EndDate year study ended; NA means the study is ongoing YYYY NA missing value Active whether or not the study site is active yes study is active no study is not active 158 hf375-02-field-sites-plots.csv field site plots hf375-02-field-sites-plots.csv 38542 e75700b37f945cdbda629f1f20ed692d 1 \r\n column , https://harvardforest.fas.harvard.edu/data/p37/hf375/hf375-02-field-sites-plots.csv NAME study point name study point name HIGHRES note about how precise the location is note about how precise the location is CATEGORY study site type for studies with multiple plots study site type for studies with multiple plots StartDate year study ended YYYY NA missing value EndDate year study ended; NA means the study is ongoing YYYY NA missing value Active whether or not the study site is active yes study is active no study is not active ArchiveNum Harvard Forest data archive numbers, if any (some studies have multiple archive files and sometimes only the major ones are listed if there are many) Harvard Forest data archive numbers, if any (some studies have multiple archive files and sometimes only the major ones are listed if there are many) AreaGISm2 size of plot meterSquared 1 natural NA missing value PI principal investigator (if more than one name, then the study has successive PIs or co-PIs) principal investigator (if more than one name, then the study has successive PIs or co-PIs) Latitude latitude in decimal degrees (WGS 1984) degree 0.00001 real NA missing value Longitude longitude in decimal degrees (WGS 1984) degree 0.00001 real NA missing value 419 hf375-03-points.zip GIS shapefiles, points hf375-03-points.zip 389831 cc851a62a776186e26784ca7277faf9c zip Esri shapefile https://harvardforest.fas.harvard.edu/data/p37/hf375/hf375-03-points.zip vector GIS hf375-04-polygons.zip GIS shapefiles, polygons hf375-04-polygons.zip 925346 c9828446fd9f8dc043ae0519a07d692a zip Esri shapefile https://harvardforest.fas.harvard.edu/data/p37/hf375/hf375-04-polygons.zip vector GIS plot long-term measurement