The Effects of Land-Clearing on a Small Watershed in Southern Guam

摘要

A study of the limnology and aquatic ecology of a small watershed in southern Guam showed that land-clearing had pronounced effects when compared to that of an upstream control area. While no significant differences were observed in nitrate concentrations and turbidity between stations, significant mean differences were observed in the watershed in soil temperatures (0.7 degrees greater), maximum air and water temperatures (1.4 degrees less), minimum water temperature (2.0 degrees higher), conductivity (11.0 micro-mhos/sq cm less), hardness (9.0 mg/1 less), pH (0.22 pH units greater), and in total phosphorus and orthophosphate concentrations.