Presence and Abundance of Microplastics within Flowing Waters of Private, Wilderness, and Other Forest Preserve Lands of the Northern Adirondack Park
Mon, 04/28/2014 - 16:26
Abstract: Microplastic sampling was conducted at thirteen locations throughout the water bodies of the Northern Adirondack Region. Plastics were found at all thirteen sites, which were categorized by the impact level of human development. Any particle less than 5mm can be defined as a microplastic particle. Microscopic plastics can be found in a variety of chemical cleaners, clothing fabrics, and concrete solutions. Storm water drainage systems and wastewater treatment plants are confirmed sources of microplastic pollution, which carry pollutants into our rivers, lakes, and streams. Ingestion of microplastic particles can lead to many distinctive threats, including biological and physical abnormalities, while possibly leading to bioaccumulation and biomagnification throughout the food web. Future practices for management and prevention of microplastic pollutants in the Adirondacks is critical for environmental protection, while also portraying a worldly view of an overlooked human induced issue.
Literary Rights: Off
Major: Environmental Sciences, Natural Resources Management and Policy
File Attachments: Microplastic particles in the Northern Adirondack Park
Python Scripting an ArcGIS Add-in for Wildlife Telemetry Data Processing
Mon, 04/28/2014 - 15:46
Abstract: There are currently no modern open source alternatives to commercial radio telemetry processing software. I developed a python add-in for ArcGIS which allows for interactive editing of telemetry data. The add-in was tested for functionality, accuracy and usability. Functionality was tested according to how closely it adhered to the original software requirements specification. Accuracy was tested by generating telemetry data from known animal locations and comparing the estimated locations to the actual locations. Usability was tested through speak aloud user tests. User data was collected on completion status, time of completion, and number usability issues found. The intended functionality goals were met and exceeded. Accuracy was less than expected with an average inaccuracy distance of 202 meters and approximately 10% of the bearing groups were unable to generate a centroid. During user testing, a total of 33 usability issues were discovered that hindered use of the software and on average it took a student 18 minutes to process one data set without prior exposure to the add-in. Qualitative observations from the user tests could be a launching point for GIS usability studies. In addition, the core modules could be modified and expanded into a separate application with dependency on Quantum-GIS or Geographic Analysis Support System (GRASS).
Literary Rights: Off
Major: Natural Resources Management and Policy
File Attachments: Kacir_2014.docx
Changes in aquatic communities resulting from interactions between climate change and invasive aquatic plants in the Adirondacks.
Thu, 02/09/2012 - 11:26
Abstract: Global climate change can act synergistically with invasive species leading to shifts in ecosystem structure and function. We assessed how a rise in water temperature influenced the potential competitive advantage of an invasive aquatic plant, Eurasian watermilfoil, (Myriophyllum spicatum) over a co-occurring native species northern watermilfoil (M. sibiricum). We also examined the interrelationship between water temperature, watermilfoil, and the aquatic ecosystem including periphyton growth and zooplankton abundance. The study was conducted using replicated mesocosms (3785-liter), with water heaters used to provide a range of temperatures. We found that increasing water temperature promoted the likely competitive advantage of the invasive species, M. spicatum: Survival of M. sibiricum plants was lower than that of M. spicatum across all temperature treatments with a mean survival rate of 24% and 96% respectively. M. sibiricum also showed significantly slower rates of plant growth (mean growth of 3.3 cm compared to 7.6 cm for M. spicatum) and reduced vigor compared to M. spicatum, with an average of less than half the number of growing meristems. Zooplankton densities averaged over 20 times higher in mesocosms with M. sibiricum compared to those with the invasive M. spicatum. Periphyton biomass was best explained by water temperature with an increase in growth in warmer water. Our study confirms that in the face of global climate change, the invasive M. spicatum will continue to exert dominance over its native counterpart. Our results also provide compelling evidence that the combined effects of climate change and invasive aquatic plants can dramatically alter aquatic ecosystems.
Literary Rights: Off
Major: Environmental Sciences, Fisheries and Wildlife Science, Forestry, Natural Resources Management and Policy
File Attachments: Climate change and milfoil draft FINAL.doc