The Effect of Growth Rate, Age, and Chestnut Blight on American Chestnut Mortality

Author : David L. Reynolds

Additional Authors : Katie L. Burke

ABSTRACT The factors affecting tree mortality have a significant impact on forest dynamics. Trees experience numerous biotic and abiotic stresses, and allocation of available resources can determine tree survival in different conditions. Recent studies support an intraspecific relationship between radial growth rate and longevity. This study investigates the existence of such a relationship in the …

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Rapid Change in Sapling and Seedling Layers in an Otherwise Stable Hardwood Forest: an Effect of Deer Browsing

Author : Jacob R.G. Kribel

Additional Authors : Karyn B. Kolman, Stewart Ware

ABSTRACT The College Woods in Williamsburg, Virginia (a.k.a. Matoaka Woods) contains a maturing post-cultivation upland hardwood forest (oaks, beech, tuliptree, hickories). In 1994 four size classes of woody stems were sampled on 27 permanent plots, and those same plots were re-sampled in 2003. Cluster analysis revealed that between samplings there was little change in the …

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Native Grass Restoration in Virginia Old Fields

Author : Anne Priest

Additional Authors : Howard Epstein

ABSTRACT Over the past several centuries, upland successional grasslands of Virginia have been invaded by exotic grasses introduced from Europe. We examined three strategies (vegetation removal, nitrogen manipulation, and seeding) for improving the establishment of the native grasses Andropogon gerardii, Sorghastrum nutans, and Schizachyrium scoparium to the northern Shendandoah Valley in Virginia. Experimental plots were …

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Notes on the Biology of Obolaria virginica (Gentianaceae) in Southeast Missouri, and the Effects of Leaf Litter on Emergence and Flower Production

Author : Diane L. Wood

Additional Authors : Allan J. Bornstein

ABSTRACT This study investigated several ecological parameters for populations of Obolaria virginica in southeast Missouri where it is listed as endangered. Investigations during the 2006 and 2007 growing seasons included population size estimates and dispersal patterns. A secondary investigation during the 2007 season quantitatively assessed the impact of leaf litter on O. virginica flower production. …

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Acidification and Pine Expansion in East Texas According to Pollen Evidence from Dual Cores in Alluvium

Author : Bruce M. Albert

ABSTRACT Results of pollen analyses of dual sediment cores from alluvium of Caddo Creek in northern Anderson County in East Texas replicate trends of vegetation change during the last 6,700 years. These floral changes include most importantly a long-term decline of hickory and a rise of pine due to physiographic factors of irreversible soil acidification. …

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Geographic Range and Morphological and Chromosomal Variability of Carex molestiformis (Cyperaceae) East of the Mississippi River

Author : Paul E. Rothrock

Additional Authors : Anton A. Reznicek, Charles T. Bryson

ABSTRACT Carex molestiformis, described in 1997 as an endemic to the Ozark and Ouachita Mountain regions, is newly collected from Georgia, Mississippi, and Ohio. Herbarium records also have confirmed this species from North Carolina, Virginia, and West Virginia bringing the overall range of this species to 11 states. A morphological comparison of C. molestiformis from …

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Scientific Note: Addendum to the Flora of Cumberland Island National Seashore, Camden County, Georgia

Author : Wendy B. Zomlefer

Additional Authors : Lisa M. Kruse

ABSTRACT Cumberland Island National Seashore, Camden County, Georgia, is administered by the National Park Service, United States Department of the Interior, and includes over 85% of the terrestrial acreage (7,880 ha; 19,472 acres) comprising Cumberland Island. A series of collecting trips over one year (2006–07) yielded 24 species of native angiosperm species not previously vouchered …

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Noteworthy Collections: Georgia 76(2)

Author : Wendy B. Zomlefer

Additional Authors : David E. Giannasi, Michael W. Denslow, Derick B. Poindexter, Peter Ball

Clinopodium gracile (Benth.) Kuntze (LAMIACEAE)—Cobb County: Marietta, Chattahoochee River National Recreation Area, Cochran Shoals–Interstate Parkway/ Gunby Creek unit Significance. The first vouchered record for Georgia was discovered during a floristic inventory of the Chattahoochee River National Recreation Area for the National Park Service (Zomlefer et al. 2011).

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Noteworthy Collections: Kentucky 76(2)

Author : Derick B. Poindexter

Additional Authors : Ralph L. Thompson

Lotus tenuis Waldst. & Kit. ex Willd. (FABACEAE)—Kenton County: Marydale. Located along US I-75/71 N, at the jct. with US I-275, ca. 9.5 km from the Ohio border. Growing in a disturbed weedy wet meadow with inundated depressions on the northbound interstate right shoulder. Associates: Bromus commutatus Schrad., Cirsium arvense (L.) Scop., Hordeum jubatum L., …

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Noteworthy Collections: North Carolina 76(2)

Author : Michael Denslow

Torilis japonica (Houtt.) DC. (APIACEAE)— Watauga County: Boone Greenway Trail, 36.207732uN, 281.65300uW, 954 meters elevation, small population growing at edge of paved trail with Pinus strobus L., Cornus florida L., Prunus serotina Ehrh., Ranunculus repens L., Daucus carota L. and Toxicodendron radicans (L.) Kuntze, 13 July 2009, M.W. Denslow, M.L. Denslow and G.L. Katz 2609 …

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