Now showing items 1-3 of 3
A GIS-Based Optical Viewshed Optimization Algorithm
(Virginia Tech, 2007-05-31)
Traditional viewshed analyses distinguish between those areas which can be seen from a given observation point and those which cannot be seen. Given a surface digital elevation model (DEM) and observer properties (location ...
A GIS-Based Landscape Scale Model for Native Bee Habitat
(Virginia Tech, 2007-09-11)
Through pollination, bees are responsible for the persistence of many biological systems on our planet. Bees have also been used for thousands of years in agriculture to improve crop quality and yield. Recently, there ...
A Dendrochronological Analysis of Vegetation Change and Climate History in Two Southern Appalachian Balds, Craggy Gardens and Big Bald, NC
(Virginia Tech, 2007-04-06)
In the southern Appalachians, unforested openings known as balds persist on or near mountain peaks. These high elevation openings support a variety of unusual biota and are considered globally rare as a result of their ...