Consequences of shifts in abundance and distribution of American chestnut for restoration of a foundation forest tree

  • Authors: Dalgleish, Harmony; Nelson, C. Dana; Scrivani, John; Jacobs, Douglass
  • Publication Year: 2015
  • Publication Series: Scientific Journal (JRNL)
  • Source: Forests
  • DOI: 10.3390/f7010004

Abstract

Restoration of foundation species, such as the American chestnut (Castanea dentata) that was devastated by an introduced fungus, can restore ecosystem function. Understanding both the current distribution as well as biogeographic patterns is important for restoration planning. We used United States Department of Agriculture Forest Service Forest Inventory and Analysis data to quantify the current density and distribution of C. dentata. We then review the literature concerning biogeographic patterns in C. dentata. Currently, 431  30.2 million stems remain. The vast majority (360  22 million) are sprouts <2.5 cm dbh. Although this number is approximately 10% of the estimated pre-blight population, blight has caused a major shift in the size structure. The current-day population has a larger range, particularly west and north, likely due to human translocation. While climate change could facilitate northward expansion, limited seed reproduction makes this unlikely without assisted migration. Previous research demonstrates that the current, smaller population contains slightly higher genetic diversity than expected, although little information exists on biogeographic patterns in the genetics of adaptive traits. Our research provides a baseline characterization of the contemporary population of C. dentata, to enable monitoring stem densities and range limits to support restoration efforts.

  • Citation: Dalgleish, Harmony; Nelson, C.; Scrivani, John; Jacobs, Douglass 2015. Consequences of shifts in abundance and distribution of American chestnut for restoration of a foundation forest tree. Forests, Vol. 7(1): 4-. 9 p.  doi:10.3390/f7010004
  • Keywords: Castanea dentata; chestnut blight; FIA; forest inventory and analysis; tree distribution
  • Posted Date: January 4, 2016
  • Modified Date: January 4, 2016
  • Requesting Print Publications

    Publication requests are subject to availability. Fiscal responsibility limits the hardcopies of publications we produce and distribute. Electronic versions of publications may be downloaded, distributed and printed.

    Please make any requests at pubrequest@fs.fed.us.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.