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Capstone Projects

Influence of Stand Density and Species Proportion on the Productivity of Planted Forests

Mon, 12/03/2012 - 13:24
Abstract: This study examines the influence of stand density and species proportion in mixed species forest plantations through the Forest Vegetation Simulator (FVS), forest growth modeling software. It is hypothesized that a mixed-species stand will be more productive than any monoculture of the same density due to some compatibility between the two chosen species. Trees were “planted” in 5 different densities; 460, 540, 660, 860, and 1100 trees per acre. The ratios of eastern white pine (Pinus strobus) and eastern hemlock (Tsuga canadensis) were then altered using substitutive plot designs and grown for 100 years. The most productive stand was established as a mixed-species plantation with a white pine:eastern hemlock ratio of 60:40. This stand was established with 1100 trees per acre; 660 white pine and 440 eastern hemlock. This translates to 39.6 square feet per tree, or a grid size of about 6.29’x6.29’. This stand, after 100 years of simulated growth, was 1.0038 times more productive than highest producing monoculture of the same density. Although the hypothesis was accepted, the most productive mixed-species stand developed into a white pine monoculture after 100 years of simulation.
Access: No
Literary Rights: Off
Major: Forestry
Year: 2012
File Attachments: The Author has selected not to publish this complete work.
Authors: Tyler J. Dallas

Management Plan for Nuisance Populations of North American Beavers Castor canadensis in New York State

Mon, 04/30/2012 - 20:27
Abstract: The North American beavers Castor canadensis are a keystone species that were once nearly extirpated in New York State in the late 18th century. This was due to the destruction of their habitat and over trapping. Beavers have been successfully relocated back into New York State. Beavers provide a major role in manufacturing intricate food webs and, are beneficial to increasing the diversity of a landscape. However in certain areas of the state the beaver populations come into conflict with human communities. The conflict results from damage to public and private lands. Beavers damage crops, human structures and contaminate water supplies by flooding. The damage created by beavers creates a safety as well as an economic issue. This management plan will give various methods of reducing the beaver population in areas where they cause severe amounts of damage and hefty costs associated with repairing the damage; without completely extirpating the beavers from the landscape.
Access: No
Literary Rights: Off
Major: Natural Resources Management and Policy
Year: 2012
File Attachments: The Author has selected not to publish this complete work.
Authors: Tyler Spaulding