DOI: 10.6084/m9.figshare.30800447.v1
title: Data on pawpaw (<i>Asimina triloba </i>[L.] Dunal) from the Forest Inventory and Analysis Database for a 29-ecoregion area in the eastern US

description: Here are data extracted from the Forest Inventory and Analysis (FIA) Database (FIADB) using the 'rFIA' package, for a study on the pawpaw tree (<i>Asimina triloba </i>[L.] Dunal). The study area is the eastern US, defined as a region containing 29 EPA Level III ecoregions with 1 or more FIA plots with pawpaw present.<br><i>Citations:</i><i>Doser, J.W.., Stanke, H., Finley, A.O., 2025. rFIA: Estimation of Forest Variables using the FIA Database R package version 1.1.0. </i><i>[WWW Document]. URL https://CRAN.R-project.org/package=rFIA (accessed 12.3.25).</i><i>Stanke, H., Finley, A.O., Weed, A.S., Walters, B.F., Domke, G.M., 2020. rFIA: An R package for estimation of forest attributes with the US Forest Inventory and Analysis database. </i><i>Environ. Model. Softw. 127, 104664. https://doi.org/10.1016/j.envsoft.2020.104664</i><i>USDA Forest Service, 2024. Forest Inventory and Analysis database. https://doi.org/10.2737/RDS-2001-FIADB</i><br>File name and column name explanations are as follows:<br>Column_names.csv - explanation of columns within remaining files<br>Data on a 29-ecoregion area in the eastern US: seed_ena_all.csv - data on all seedlings within the 29-ecoregion study area, 2010-2021seed_ena_pp.csv - data on pawpaw seedlings within the 29-ecoregion study area, 2010-2021tpa_ena_all.csv - data on all trees within the 29-ecoregion study area, 2010-2021tpa_ena_all_1in.csv - data on all trees &gt;=1-5" diameter-at-breast-height within the 29-ecoregion study area, 2010-2021tpa_ena_all_5in.csv - data on all trees &gt;=5" diameter-at-breast-height within the 29-ecoregion study area, 2010-2021tpa_ena_pp.csv - data on pawpaw trees within the 29-ecoregion study area, 2010-2021tpa_ena_pp_1in.csv - data on pawpaw trees &gt;=1-5" diameter-at-breast-height within the 29-ecoregion study area, 2010-2021tpa_ena_pp_5in.csv - data on pawpaw trees &gt;=5" diameter-at-breast-height within the 29-ecoregion study area, 2010-2021<br>Data on four select US states:seedling_alilmova_all.csv - data on all seedlings from 2005-2024 within four states: Alabama, Illinois, Missouri, and Virginiaseedling_alilmova_pp.csv - data on pawpaw seedlings from 2005-2024 within four states: Alabama, Illinois, Missouri, and Virginiatpa_alilmova_all.csv - data on all seedlings from 2005-2024 within four states: Alabama, Illinois, Missouri, and Virginiatpa_alilmova_pp.csv - data on pawpaw seedlings from 2005-2024 within four states: Alabama, Illinois, Missouri, and Virginia<br>Data per EPA Level III ecoregion:per_ecoregion.zip - a compressed file folder containing four geodatabase-format GIS layers:alltrees_seedling_ecoregion.gdb - data on all seedlings within each of 29 EPA Level III ecoregions, 2010-2021alltrees_tpa_ecoregion.gdb - data on all trees within each of 29 EPA Level III ecoregions, 2010-2021pawpaw_seedling_ecoregion.gdb - data on pawpaw seedlings within each of 29 EPA Level III ecoregions, 2010-2021pawpaw_tpa_ecoregion.gdb - data on pawpaw trees within each of 29 EPA Level III ecoregions, 2010-2021