Title: Preparing for hemlock woolly adelgid in Ohio: Communities associated with hemlock-dominated ravines of Ohio's unglaciated Allegheny Plateau
Author: Martin, Katherine L.; Goebel, P. Charles.;
Source: In: Fei, Songlin; Lhotka, John M.; Stringer, Jeffrey W.; Gottschalk, Kurt W.; Miller, Gary W., eds. Proceedings, 17th central hardwood forest conference; 2010 April 5-7; Lexington, KY; Gen. Tech. Rep. NRS-P-78. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station:436-446.
Publication Series: General Technical Report - Proceedings
Description: Hemlock woolly adelgid (HWA) is an invasive insect causing widespread mortality in eastern hemlock (Tsuga canadensis [L.] Carr; hereafter "hemlock") throughout eastern forests. Hemlock is a foundation species, regulating ecosystem structure and function (e.g., microclimate, nutrient cycling). Across the central and southern Appalachians, hemlock tends to dominate ravine and riparian forests; thus its loss will have dramatic effects across ecosystem boundaries. Prior to invasion by HWA, we are collecting data on hemlock in southeastern Ohio. We found hemlock associated with short, steep slopes regardless of aspect. Hemlock is dominant at lower slope positions adjacent to streams, where few other woody species are found in either the overstory or sapling layers. At upper slope positions, increases in diversity indices are small. Nonmetric multi-dimensional scaling analyses indicate additional species (deciduous hardwoods) form predicable associations along environmental gradients within ravines. Thus, at upper slope positions, communities of oaks and other deciduous hardwoods similar to other ecosystems of the region may develop should widespread hemlock mortality occur. At the same time, riparian forests will experience nearly complete shifts in species composition and, thus, function. Hemlock mortality remains a serious challenge for the Central Hardwoods region, where hemlock-dominated ravine systems are important recreation and tourism sites.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
XML: View XML
Martin, Katherine L.; Goebel, P. Charles. 2011. Preparing for hemlock woolly adelgid in Ohio: Communities associated with hemlock-dominated ravines of Ohio's unglaciated Allegheny Plateau. In: Fei, Songlin; Lhotka, John M.; Stringer, Jeffrey W.; Gottschalk, Kurt W.; Miller, Gary W., eds. Proceedings, 17th central hardwood forest conference; 2010 April 5-7; Lexington, KY; Gen. Tech. Rep. NRS-P-78. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station:436-446.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility