The influence of a common parent on sap sweetness among open pollinated sugar maple (Acer saccharum Marsh.) offspring
Wed, 05/08/2019 - 15:08
Abstract: Beginning in the 1950s, the United States Forest Service began to look into the ability to predict and control the heritability of sap sweetness in sugar maples (Acer saccharum Marsh.). A search for genetically superior (sweeter) trees was conducted across 6 states, testing 21,000 trees. Only 53 trees were chosen to be parental stock for the “Super Sweet” sugar maple improvement program. These trees, cloned through rooted cuttings and scion wood grafting, were planted in the Grand Isle, VT clonal bank. One of the five progeny tests of open pollinated offspring from the clonal bank was established in Lake Placid, New York. These trees had their first evaluation at age ten. Each tree had its diameter and height measured, as well as its sap sweetness tested. Now, 35 years after planting, the trees were evaluated again. An inventory was conducted with diameter at breast height, tree height, and live crown ratio measurements. Of the 725 trees planted, only 396 trees remain. Only 258 trees were of size and quality to handle a 5/16” tap. Their sap sweetness was measured at multiple times though out the season. Knowing one of the two parents of each tree allowed for the comparison of the sap sweetness of the different common-parent groups. The data collected did not support that the knowledge of only one parent could be used to predicts a tree’s sweetness relative to any other parent’s offspring. The bigger picture progeny evaluations will continue the “Super Sweet” sugar maple improvement program.
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File Attachments: Super Sweet Maples: Sap Sweetness and the Parental Influence
Does the presence of Malus spp. increase the fertility of the soil surface in pastures?
Mon, 05/01/2017 - 18:24
Abstract: Techniques to increase soil fertility in a pasture can benefit the system by combating soil degradation and increasing the health of vegetation. The use of apple trees (Malus spp.) may be particularly beneficial in achieving this due to reliable fruit yields, ease of management, and variety of suitable habitat. We hypothesized that soil directly under the canopy of apple trees would be higher in nutrients (C, Ca, K, Mg, N, & P) than soil in areas with no tree cover. Soil samples were taken from the top 15 cm of the soil surface under apple trees and in areas without trees at 14 sites in Massachusetts and New York. Samples were analyzed using spectrometry and color imagery to determine nutrient content. Potassium and magnesium concentrations were found to be significantly higher in under-canopy samples. Further research may expand these results and determine if the application of apple trees can be used to increase the health of pasture systems.
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Major: Environmental Sciences, Forestry
File Attachments: capstone_gumbartpayson.pdf
Creating a Reliable Surveying Network: Does Adding New Survey Control Points to Paul Smith’s College Campus Enhance its Current Network?
Tue, 12/05/2017 - 18:48
Abstract: The goal of the project was to improve the current geometry of the Paul Smith’s College surveying network. Four new survey control points were added to the current network allowing for new connectivity to old control points. Previously, there was a Westside network and an Eastside network that were not connected and by connecting these two networks, it has expanded the current network further into the campus. Two different methods were used to help identify the new network. A traditional survey method, a closed traverse, was used to connect the old control points to the new control points by utilizing a Nikon DTM-352 series total station. A X90 OPUS GPS unit was used to connect the new control points into a geodetic network. After the data was collected a least squares adjustment was done to the closed traverse to correct for error within the traverse. The GPS data was processed by Topcon Tools utilizing a Continuously Operating Reference System (CORS) to obtain a better level of accuracy for the network it produced. The two different techniques used produced different results in the overall survey networks and supplied different coordinates than what has been previously used by students at the college. These results gained from the project are not of a consistent level of precision and are not recommended for use without conducting more closed traverses to increase precision within the network.
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Major: Forestry, Natural Resources Management and Policy, Surveying Technology
Creating Universal Use for the Glenview Preserve
Fri, 12/15/2017 - 20:40
Abstract: The Adirondack Land Trust recently purchased 238 acres along Route 86 in Harrietstown. This tract of land is called the Glenview Preserve. The Adirondack Park Agency has already designated a scenic vista of Whiteface Mountain and the High Peaks. Along the back of the property is the Bloomingdale Bog, which is the third largest boreal peatland in New York. Vista like the Glenview Preserve, which doesn’t involve a climb and is also accessible to all. This poses the perfect opportunity to establish universal trails for all to enjoy. Conservation of land is made possible by connections that people make to the land. If there is no connection to nature, it could be destroyed without anyone speaking up. The location of this tract of land makes it ideal for accessible trail since there is no mountain to hike to get the view. Hiking is one of the oldest pastimes of the world. People can experience beauty every season of the year. It strengthens our bodies and minds at no cost. Hiking is a wonderful chance to feel the earth below your feet and get up close and personal with nature. Installing trails would not only open up recreational opportunities such as hiking, running, and bird watching, skiing and snowshoeing but also build community.
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Major: Forestry, Natural Resources Sustainability Studies
File Attachments: Capstone_Final.docx