bioRxiv preprint doi: https://doi.org/10.1101/694802; this version posted July 8, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Title: Associated habitat and suitability modeling of goldenseal (Hydrastis canadensis L.) in Pennsylvania: explaining and predicting species distribution in a northern edge of range state. *1Grady H. Zuiderveen, 1Xin Chen, 1,2Eric P. Burkhart, 1,3Douglas A. Miller 1Department of Ecosystem Science and Management, Pennsylvania State University, University Park, PA 16802 2Shavers Creek Environmental Center, 3400 Discovery Rd, Petersburg, PA 16669 3Department of Geography, Pennsylvania State University, University Park, PA 16802 *telephone: (616) 822-8685; email:
[email protected] bioRxiv preprint doi: https://doi.org/10.1101/694802; this version posted July 8, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Abstract Goldenseal (Hydrastis canadensis L.) is a well-known perennial herb indigenous to forested areas in eastern North America. Owing to conservation concerns including wild harvesting for medicinal markets, habitat loss and degradation, and an overall patchy and often inexplicable absence in many regions, there is a need to better understand habitat factors that help determine the presence and distribution of goldenseal populations. In this study, flora and edaphic factors associated with goldenseal populations throughout Pennsylvania—a state near the northern edge of its range—were documented and analyzed to identify habitat indicators and provide possible in situ stewardship and farming (especially forest-based farming) guidance.