Environmental Health and Protection Commons^™

Learning From California’S Experience With Small Water System Consolidations: A Workshop Synthesis, Nell Green Nylen, Camille Pannu, Michael Kiparsky

Nell Green Nylen

California recognizes a human right to safe, affordable drinking water. However, small and disadvantaged communities can find it especially challenging to fund the water systems necessary to achieve this goal. Small water systems are responsible for the bulk of the state’s drinking water quality violations, and an estimated 300 disadvantaged communities in California are served by systems that fail to meet state drinking water standards.

Water system consolidations can create economies of scale that help address persistent water system inadequacies in small and disadvantaged communities. More than 100 consolidation projects have been completed or are ongoing in California, and many …

The Role Of Environmental Filtering In Structuring Appalachian Tree Communities: Topographic Influences On Functional Diversity Are Mediated Through Soil Characteristics, Julia I. Chapman, Ryan W. Mcewan

Ryan McEwan

Identifying the drivers of community assembly has long been a central goal in ecology, and the development of functional diversity indices has provided a new way of detecting the influence of environmental gradients on biotic communities. For an old-growth Appalachian forest, we used path analysis to understand how patterns of tree functional diversity relate to topography and soil gradients and to determine whether topographic effects are mediated through soil chemistry. All of our path models supported the idea of environmental filtering: stressful areas (high elevation, low soil moisture, low soil nutrients) were occupied by communities of low functional diversity, which …