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Capstone Projects

Managing the Declining Population of Northern long-eared bats in New York State

Thu, 05/03/2018 - 08:02
Abstract: White-nose syndrome (Geomyces destructans) is a fungal disease that has caused over 5.5 million bat deaths in eastern North America. The fungus affects any open skin including the bat’s patagium and causes lesions. The fungus consists of microscopic spores which can attach to anything it comes into contact with to spread the disease. The fungus is spread from bat to bat and cave systems as well as facilitated by human tourism. Northern long-eared bats (Myotis septentrionalis) are currently threatened in New York State. The northern long-eared bat is an insectivore and must hibernate when its food source is unavailable. During hibernation the bat’s immune system is suppressed, making it more vulnerable to the effects of white-nose syndrome. The bat will deplete its fat reserve to fight off the disease, which will lead to death if the bat cannot find a food source. White-nose syndrome has decreased the northern long-eared bat population by 90% in New York State. There is no cure for white-nose syndrome, and the northern long-eared bat population continues to decrease in New York State. The northern long-eared bat population is relatively unknown, but estimated to be 20,000 individuals in New York State. Population projections predict that the bat may become extirpated from New York State in the next 5 years. Increasing the survivability of the juvenile bat population to 70% and the adult bat population to 80% would prevent the extirpation of the species. The goal of this management plan is to increase the population of northern long-eared bats in New York to prevent the extirpation of the species from the state and create a sustainable population. This should be done by preventing further human facilitation of the disease, increasing educational resources for the public and gathering more information about the fungus and the northern long-eared bat population in New York.
Access: No
Literary Rights: On
Major: Fisheries and Wildlife Science
Year: 2018
File Attachments: The Author has selected not to publish this complete work.
Authors: Bailey Muntz

Homesteading for Beginners

Wed, 12/12/2018 - 14:51
Abstract: Homesteading isn’t just a movement, it’s a way of life. Our first research proposal was to create a guide to homesteading for beginners. Initial research showed there are countless types of homesteads and so we decided to research what homesteading is and the different ways you can homestead. Homesteading can be defined as a life of self sufficiency. But our research found that there can be many ways to achieve that goal.
Access: No
Literary Rights: Off
Major: Natural Resources Management and Policy, Natural Resources Sustainability Studies
Year: 2018
File Attachments: The Author has selected not to publish this complete work.
Authors: Ron Fina
Erica Martin

Management Plan for Pacific Walrus (Odobenus rosmarus divergens) in Alaska, 2017-2027

Fri, 04/28/2017 - 18:06
Abstract: Pacific Walruses are social mammals and travel in herds. Most of the population spends the summer months in the ice pack of the Chukchi Sea; however, mostly adult males use coastal haulouts in the Bering Sea. Walruses use ice to rest between foraging trips, mate, care for their young, and defend themselves against predators. Climate reduced their ability to engage in these behaviors by eliminating the ice pack in their summer season. Walruses feed on bivalves on the sea bottom; however, because of climate change they no longer can reach the bottom. In response to the loss of ice, walruses are resting on land haulouts with as many as 20,000-40,000 individuals. This puts pressure on the benthic material supply. The swim from drifting ice to coastal haulouts can be hundreds of kilometers, which leads to the death of young walruses. Walruses are sensitive to sounds from ships, aircrafts, and tourist underwater and out of water. When walruses are disturbed by these events, they create stampedes by trying to dive into the water. The stampeding event ends in high mortality for calves. In 2007, more than 1,000 walruses were trampled to death in Chukotka, Russia. To prevent human disturbances, management at haulouts needs to occur for 10 years (2017-2027). The goals are to improve demographic knowledge of pacific walruses, minimize stampeding events, and grow and replace native bivalves near land haulouts. This could be accomplished by laws that require aircraft and vessels to maintain the appropriate distance. Creating artificial habitat would result in less use of coastal haulouts which would decrease mortality during stampeding events. It would also provide easier access to bivalves for foraging trips. Bivalves are depleting near land haulouts due to large demand from the high density of walruses, therefore aquaculture is needed to replace their food source. Harvesting more of the adult population would be essential to maintain the population from going over carrying capacity. If the adult population decreases then fewer calves will die in stampedes. These objectives are necessary to ensure the future of walruses and their new habitat.
Access: No
Literary Rights: On
Major: Fisheries and Wildlife Science
Year: 2017
File Attachments: The Author has selected not to publish this complete work.
Authors: Desiree Stumpf

Are Zooplankton As Patchy As Phytoplankton?

Mon, 05/01/2017 - 15:44
Abstract: Phytoplankton and zooplankton form the base of most lake food webs and are the primary sources of energy for higher trophic levels. Recent studies have shown that the horizontal distribution of phytoplankton is not even across the surface of lakes. While the vertical distribution of zooplankton has been well studied, little is known about the horizontal distribution of zooplankton in the surface waters of lakes or the spatial interactions among zooplankton and phytoplankton. The aim of this study was to quantify the spatial distribution of phytoplankton and zooplankton and determine if their spatial distributions are related. We sampled zooplankton and phytoplankton during the day and at night in a 24 point grid in Paul Lake, Michigan in the late spring and early summer of 2016. Phytoplankton and zooplankton were not uniformly distributed horizontally. Instead, there were high density patches of both zooplankton and phytoplankton, and in many instances there was positive autocorrelation. Additionally, zooplankton and phytoplankton concentrations were rarely correlated in space indicating that grazing is likely not a driver of zooplankton or phytoplankton spatial heterogeneity. If the goal of a study is to understand and characterize the entire population of either phytoplankton or zooplankton, we suggest taking multiple samples of the pelagic zone.
Access: No
Literary Rights: Off
Major: Fisheries and Wildlife Science
Year: 2017
File Attachments: The Author has selected not to publish this complete work.
Authors: Jonathan Stetler, Cal Buelo