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Capstone Projects

Impacts of Minnow Species Composition on Marsh Feeding Ecology: A Look at Minnow Composition in Heron Marsh

Mon, 11/30/2020 - 16:07
Abstract: Minnows play an important role in marsh ecosystems as both predator and prey. The abundance of minnows in water systems makes them important tools for studying the feeding ecology of small prey fish. Minnow traps were set within specific regions and plots located in the Heron Marsh in the Adirondack Park, New York. These traps were baited and checked the next day, and minnows were identified by species then released. Trophic guilds were assigned to each minnow species based on literature and feeding habits. ANOVA tests were conducted to compare minnow species composition from the fall of 2020 in all regions of the marsh. Histograms were used to compare length-frequency over time and sites where minnows frequent. The composition of trophic guilds showed that carnivores were scarce, as creek chub only over 100mm were considered predatory, and they were not as frequent as smaller creek chub. Omnivorous generalist feeders were common but no specific site in the marsh had more omnivorous feeders than other sites. Finally, the abundance of insectivores was high in most sites, and highest in the forest ecology trail site. Length frequency of the two most caught fish, creek chub and finescale dace, were represented with histograms. Creek chub under 100mm were more abundant in every site than individuals larger than 100mm. Similarly, finescale dace 70mm and smaller were more common in every site.
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Major: Biology
Year: 2020
Authors: Emily Schmeltz

An Ecological History of the Albany Pine Bush, Albany NY

Mon, 11/30/2020 - 15:45
Abstract: Paleoecology allows us to look backward in time thousands of years to see the long-term ecological history of an area. The main focus was to conduct the first exploratory investigations of the wetland located in the Albany Pine Bush Preserve (APBP) and Stump Pond deposits and the first directly dated ecological history of the pine bush. Irregular fire regimes and land development have caused a massive loss to the pine bush. Between 1940 and 1990 the pine bush has experienced an 81% change in land cover. Despite this, the APBP is home to many rare and endangered species in need of habitat restoration. Three samples (APB1-A, APB1-C, & APB2) were collected from a wetland within the boundaries of the APBP and one sample (Stump-1) was collected from a nearby pond. Cores were analyzed for pollen assemblages to reconstruct the tree community. APB cores revealed that Pinus and Quercus pollen grains made up the majority of all pollen found from Present – 6600 years ago Stump-1 pollen assemblages were dominated by Pinus and Picea indicating that between 6600 and 10,600 years ago the ecosystem transformed into the pitch pine- scrub oak ecosystem we see today. This information can help the APBP justify future preservation and restoration work.
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Major: Biology
Year: 2020
File Attachments: Capstone Paper Full.docx
Authors: Skylar Murphy

Cultural eutrophication of Lower Saint Regis Lake using diatoms and organic content as indicators of eutrophication.

Tue, 04/28/2020 - 12:06
Abstract: Cultural eutrophication can greatly affect water quality, leading to algae blooms and can affect fish communities. Throughout the history of Paul Smith’s Hotel and College, development along Lower St. Regis lake has led to increases in eutrophic conditions, which has detrimental effects on water quality. In this study, a sediment core from Lower St. Regis Lake was analyzed to determine when past eutrophication events occurred. This was accomplished using species counts of diatoms from every 1.0 cm of sediment. The relative abundance of diatom species such as Tabellaria flocculosa, Asterionella formosa, and Fragilaria crotonensis were used as indicators of more eutrophic conditions. Loss on ignition (LOI) was also used to measure the organic content in the sediment at increments of 0.5 cm. The higher percent lost on ignition indicates higher productivity in the lake and more eutrophic conditions. Some samples from the sediment core were also dated using lead-210 to create a timeline that could be compared to known dates of events occurring along the lake that could have affected the trophic status of Lower St. Regis Lake. There was a sudden spike in the relative abundance of F. crotonensis and an increase in organic content at a depth of 20 cm in the core, indicating that conditions became more eutrophic. Based on the lead-210 dates, this spike in F. crotonensis and organic content occurred between 1898 and 1908, when development around the lake was increasing and Paul Smith’s Hotel added indoor plumbing with poor wastewater treatment practices.
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Major: Biology
Year: 2020
File Attachments: Capstone_0.docx
Authors: Lydia Harvey

Alumni Campground Lean-to Design Analysis

Sat, 05/09/2020 - 11:32
Abstract: When thinking about the Adirondacks, lean-tos are among the first that come to mind. The Adirondack lean-to has, for most of the parks history, been a staple for back country shelters. The design of the lean-to is the most important part about them. Traditionally built with full round logs to have three walls and one open side with an overhang from the roof. Notches in the logs at each corner of the lean-to allow for the structure to be more ridged then if notches were not used. The goal behind this project is to look at the design of the Adirondack lean-to and see what about it could be simplified to make plans for an easier to build and construct lean-to.
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Major: Natural Resources Conservation and Management, Sustainable Communities & Working Landscapes
Year: 2020
Authors: Michael J Gaulin

Assessment of Barriers and Solutions to Obtaining Local Food on Paul Smith's College Campus

Mon, 05/11/2020 - 01:46
Abstract: Throughout the course of the last century, food systems have profoundly shifted from a primarily locally focused diet, to a virtually infinite global array of options. The many negative impacts of this momentous shift are now becoming more evident overtime. With light being recently shined upon these adverse effects, a substantial shift back to more local food options has begun. However, with all this newfound attention placed on localizing food systems, the meaning of local food has adapted an endless number of meanings. Paul Smith’s College agricultural instructor, Sara Dougherty echoed this feeling by saying, “‘Local food’ has been defined in a variety of ways, and we've seen this definition change and morph over time” (Dougherty). This evolving conversation around the benefits local food can have on communities has caused many entities to reassess their own food systems. More specifically, institutions of learning have increasingly rallied behind this movement. “Bringing healthy, locally produced food into institutions has been proposed as an effective strategy to address social, economic, and environmental issues” (“CAMPUS DINING”). Though the specifics of each sustainable food system are unique, they often share similar goals and values. Many of these values happen to also be innately engrained in the principles of which Paul Smith’s College was founded on.
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Major: Sustainable Communities & Working Landscapes
Year: 2020
File Attachments: Capstone Paper SUS 496.docx
Authors: Hannah Rion

A Paleolimnological study of precipitation variability in the Adirondacks over the last thousand years

Mon, 12/02/2013 - 20:40
Abstract: At present, most regional climate models anticipate wetter conditions by the end of this century, but a few models anticipate drier conditions. This study uses foresight to test these models, as well as describe the relationship between the dominant climate system in the region and past precipitation in the Adirondacks. Precipitation was inferred from diatom assemblages observed along a lake sediment core extending into the 1000 years. This study shows that abrupt, extreme wet events were common during the last 1000 years, and a relationship between the dominant climate system (North Atlantic Oscillation) and precipitation was irregular during the cool Little Ice Age but negatively associated during the warm Medieval Climate Anomaly. With temperatures in the Northeast projected to increase by 2-5 degrees C by 2100 AD, our study suggests the region may become more arid rather than wetter, opposite of what models currently suggest.
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Major: Biology, Environmental Sciences
Year: 2013
File Attachments: regalado.serwatka.docx
Authors: Sean A. Regalado, W. Martin Serwatka

The Effects on Soil Caused by Garlic Mustard (Alliaria petiolata) in a Northern Hardwood Forest in the Northern Adirondack Mountains

Mon, 12/02/2013 - 10:54
Abstract: Plant invasions are thought to be among the worst causes of biological extinction and biodiversity loss in the modern world. With the United States spending upward of thirty four million dollars a year in attempts to control and repair the damages caused by invasive plants, not only are we feeling the biological effects, but we financially cannot afford to keep combating these invasive species (Barto and Cipollini, 2009). Garlic mustard (Alliaria petiolata) can invade multiple types of sites whether the soil is sandy or if a site has been disturbed. This invasive species will take over the understory and alter soil chemistry (Morris, McClain, Anderson and McConnaughay, 2012). This study aimed to look at how garlic mustard is affecting soils in the northern Adirondack Mountains in New York State. Although currently scattered and not very prevalent, there have already been changes to the soil chemistry. This study was conducted by setting up multiple plots within areas where garlic mustard was present and gathering soil to be used to test for nutrient values. It was found in this study that calcium, phosphorous, magnesium, potassium, sodium, aluminum and soil pH values changed due to the presence of garlic mustard.
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Major: Biology, Forestry
Year: 2013
File Attachments: Capstone Final.docx
Authors: Kyle Dash

The Conservation and Management of Wolverine (Gulo gulo) Populations in Northern Idaho to Help Prevent Human Caused Extirpation from the Contiguous United States

Thu, 05/02/2013 - 11:21
Abstract: Wolverines (Gulo gulo) were once a thriving species in the North Western United States, but large scale trapping and poison programs in the early 1900s lead to the species near extinction. Since then, populations in the United States have been struggling to maintain a strong presence in Idaho. Its current listing as threatened on the Endangered Species Act prohibits hunting and trapping, but more management is needed to sustain populations. Human development and recreation activities have caused wolverines to disperse from its nature range. Using habitat preservation techniques on current and historical wolverine habitat, increase availability and connectivity will improve dispersal. Close relationship with state officials will provide protection regarding land use, recreation, hunting, trapping and harassment. Public education will teach residents ways they can help prevent wolverine populations from further decline. Extensive research and population monitoring are needed due to the currently declining populations and the low fecundity of the species.
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Major: Biology, Fisheries and Wildlife Science
Year: 2013
Authors: Danielle E. Ball

No Known Antidote: Quantification of a deadly toxin, tetrodotoxin, in red efts (Notopthalamus viridescens; Rafinesgue, 1820)

Mon, 04/29/2013 - 17:42
Abstract: Tetrodotoxin (TTX) in found in taxa worldwide including the eft life stage of the eastern newt (Notopthalamus virisdescens). Previous studies have shown that there is variability of TTX concentrations within efts and newts, and it is not known if the presence of TTX in these efts is common among populations. Our objective was to determine the distribution of TTX within the body N. viridescens efts. We hypothesized that the skin would have the highest concentrations of TTX as it is the area of the body that will likely come into contact with a predator. If certain regions of the skin come into contact with a predator more often than others, there may be significant differences in the dorsal, abdominal and pectoral regions of skin. Further, we hypothesized that the ova would have the second highest concentration of TTX as they are vital to reproduction yet vulnerable to predation. Through HPLC analysis we determined the concentrations of TTX within different tissues of N. viridescens efts including the: dorsal, pectoral, and abdominal skin; ovaries; testes; liver; pancreas; and alimentary canal. The concentrations of TTX between the different tissue types are not significantly different, nor were individuals significantly different in concentration of TTX from one another. Toxicity levels were high in comparison to other N. viridescens efts and more similar to the toxicity of highly toxic Taricha newts. The high toxicity of N. viridescens could be contributed to strong predation pressure by the slightly resistant garter snake (Thamnopsis sirtalis) and eastern hognose snake (Heterodon platirhinos).
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Major: Biology
Year: 2013
Authors: Kimberly M. Forrest

Compaction of Hiking Trails Located in the Northeastern Area of the Adirondack State Park, New York

Mon, 04/29/2013 - 12:19
Abstract: With continued increases in outdoor recreation in the United States, the physical impact of that use needs to be monitored for its effects. The purpose of this study was to explore whether a relationship exists between traffic numbers and soil strength of trails in the High Peaks Region of New York’s Adirondack state park. Soil strength was used as a measure of compaction because of its ability to indicate certain aspects of soil physical properties like bulk density, and hydrological condition (Mirreh & Ketcheson,1972), which are also soil physical properties that are effected by compaction (Hanna & Al-Kaisi,2009). These physical properties are important factors which influence a soils ability to carry out its biotic and abiotic processes (Kozlowski,1999). Initially the relationship between average soil strength of trails and traffic was insignificant. Upon further analyzing the data we found a significant relationship between on-trail and off-trail soil strength and used this relationship to create on-trail residual soil strengths. This was done to remove the influence that off-trail soil strength was having on the traffic vs. soil strength relationship. With the on/off-trail relationship influence removed, the relationship between on-trail residual soil strength and traffic was significantly improved. Literature discussed showed how the soil strengths collected could be used to infer possible effects on the sites tested. Relations between soil strength and bulk density, root elongation, root penetration, and trail recovery were all reviewed to provide insight on the quality of the soil at sample sites.
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Major: Biology
Year: 2013
File Attachments: The Author has selected not to publish this complete work.
Authors: Karl Van Osch