Species Assemblages of Tree Canopy Myxomycetes Related to Bark pH

Author : Angela R. Scarborough

Additional Authors : Harold W. Keller, Joseph S. Ely

ABSTRACT Acid deposition contributes to forest health concerns at high elevation sites in Great Smoky Mountains National Park (GSMNP). Bark samples were taken from living trees at three study sites: Abies fraseri and Picea rubens from high elevation sites near the Clingman’s Dome area of Tennessee; Juniperus virginiana and Quercus alba at low elevation sites …


Bottomland Forests in the Lower Mississippi Alluvial Valley Associated with the Endangered Lindera melissifolia

Author : Tracy S. Hawkins

Additional Authors : Daniel A. Skojac, Jr., Brian R. Lockhart, Theodor D. Leininger, Margaret S. Devall, Nathan M. Schiff

ABSTRACT Forest canopy and subcanopy data were collected from and compared among five disjunct bottomland hardwood forests in the Lower Mississippi Alluvial Valley, each with known occurrence of a population of the federally endangered shrub Lindera melissifolia. All study sites are cut-over forests, underlain by hydric soils, and have a seasonal high water table. Canopy …


Influence of Reproductive and Environmental Factors on Population Size of Wild Hyacinth [Camassia angusta (Engelm. and A. Gray) Blank. (Liliaceae)], an Illinois Endangered Species

Author : Kevin M. Franken

Additional Authors : Janice M. Coons, Henry R. Owen, Eric L. Smith, John E. Ebinger

ABSTRACT Wild hyacinth (Camassia angusta) is a perennial species native to mesic prairies of the midwestern and south-central United States. In Illinois, the only extant population of this state-endangered species is in a small section of degraded black-soil prairie along a railroad track right-of-way south of Elwin, Macon County. The objectives of this study were …


Life in the Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival but Slow Growth in Florida’s Nutrient-Poor Uplands

Author : Warren G. Abrahamson

Additional Authors : Christy R. Abrahamson

ABSTRACT The palmettos Serenoa repens and Sabal etonia are foundation species in many peninsular Florida vegetative associations. We monitored survival and growth of palmetto seedlings using two cohorts found in different vegetative associations. Mixed-species cohorts containing both Serenoa repens and Sabal etonia were individually tagged in 1989 and have been monitored until 2008. One cohort …


Spatiotemporal Analysis of Three Common Wetland Invasive Plant Species Using Herbarium Specimens and Geographic Information Systems

Author : Ryan J. Miller

Additional Authors : Andrew D. Carroll, Thomas P. Wilson, Joey Shaw

ABSTRACT The negative ecological impact of invasive plant species has been widely reported in recent years. Herbarium specimens can allow for the study of spatiotemporal spread of invasive species in order to understand distribution characteristics and patterns which can then be utilized for management decisions. In this study, three common wetland invasive plant species (Phragmites …


Spatially Narrow Wet Prairies

Author : Andre F. Clewell

Additional Authors : Christina Raymond, C.L. Coultas, W. Michael Dennis, James P. Kelly,

ABSTRACT Wet prairies in the Southeast consist of floristically diverse grass-sedge ecosystems that are conspicuously lacking in woody species because of seasonal soil saturation and frequent fire. They occupy a landscape position between mesic, pyrogenic pine savannas and hydric swamps and marshes. Wet prairies are recognized wherever they occur on broad expanses of land; however, …


Heat Shock Germination Responses of Three Eastern North American Temperate Species

Author : Jay F. Bolin

ABSTRACT The requirement for heat shock to break physical dormancy of hard seeds is a widely known strategy for recruitment in fire maintained ecosystems. Despite extensive work by fire ecologists in the southeastern United States, heat shock response has been demonstrated for only a few eastern North American temperate species. In this study germination responses …


Vascular Flora of Sandhill Research and Education Center, Richland County, South Carolina

Author : R. Austin Jenkins

Additional Authors : Patrick D. McMillan

ABSTRACT Sandhill Research and Education Center is located on 215 ha of greenspace in South Carolina. The Center is now surrounded by suburban development. Although located within the Sandhills region and within the historic range of the Longleaf Pine Forest, agriculture has been the predominant land use during the last century. With development pressure and …


Noteworthy Collections: Virginia 74(2)

Author : Conley K. McMullen

Trillium nivale Riddell (TRILLIACEAE)— Rockingham County: Approximately 4.0 km N of Keezletown, off of Mountain Valley Road, at the end of Walnut Hill Drive on forested hillside; elevation ca. 526 m; 30 March 2008. Conley K. McMullen 891 (photo) (JMUH). Significance. This is the first collection of T. nivale (snow trillium) from Rockingham County, and …


Noteworthy Collections: South Carolina 74(2)

Author : Daniel F. Brunton

Gratiola graniticola D. Estes & R. L. Small (PLANTAGINACEAE)—York County: 35.104965uN, 81.205331uW, 1.8 km east of Highway 321, 10 m south of Highway 55 opposite [southern terminus of] Green Pond Road, Clover, 17 May 1992, Brunton and McIntosh 11,113 (MICH, APSC, Brunton personal herbarium); 16 May 2008, Brunton and McIntosh 17,130 (USCH, APSC, Brunton personal …