Characterization of vernal pools at Grapevine Point, Douglas Lake, Cheboygan Co. MI

Abstract

Vernal pools are ephemeral pools with seasonal changes of water levels that are distributed widely around the world. Vernal pools are mostly fed by rainwater and a limited watershed makes vernal pools nutrients poor. However, vernal pools serve as important wetland habitat for macroinvertebrates and amphibians. The purpose of the study was to conduct a comprehensive survey of biotic and abiotic features of vernal pools at Grapevine Point of Douglas Lake, Cheboygan Co. MI. There is less study done on the vernal pools at Grapevine Point and our study served as preliminary characterization of the vernal pools. Biotic features including macroinvertebrates in pool and amphibians surrounding the pool were sampled. Abiotic features included in this study comprise physical measurements of the pool, dissolved oxygen, pH, conductivity, alkalinity, pool surface irradiance, chlorophyll‐a, and nutrients. Our survey found that both biotic and abiotic characteristics of the pools were similar with other vernal pools that have been studied in the region.