Soil moisture levels’ impact on variation in microhabitat selection and distribution between shrub species along the riparian zones of the St. Regis River in Northern New York
Sat, 11/28/2020 - 15:42
Abstract: Willows (Salix spp.) are commonly found along riparian zones of northern latitude water bodies and are often used in riparian restoration and bank stabilization. However, not much is known about willows on a species level, especially among thee shrubby species native to North America. This study seeks to better understand the variation in the distribution of three willows (Salix bebbiana, S. discolor, and S. petiolaris) and two other shrub species (Alnus incana and Viburnum nudum) on a species level based on soil moisture. To reach this goal this study analyzes their distribution at several points along the shore of the St. Regis River. The study analyzed vertical distance from the river as a proxy for soil moisture, saturation volume as a proxy for porosity, and bulk density. It was found that soil moisture, as approximated by vertical distance was statistically significantly linked to the distribution of different shrub species. Porosity, bulk density, and distance along the river had no statistically significant relationship. The results supported the hypothesis that willows had the highest soil moisture requirements. The sample sizes were very small and only one willow, a S. petiolaris, was found in the study sites.
Literary Rights: Off
File Attachments: G.Davis_Capstone_final.docx