We compiled existing data and information to characterize the condition and trends in high priority natural resources in San Juan Island National Historical Park. We identified 37 indicators to evaluate the condition and trend of these resources. For each indicator we attempted to define reference conditions to which we could...
Intensifications in seasonal temperature variation, attributed to increased greenhouse gas concentrations, are having an adverse effect on the forest composition of the northeastern United States. New York’s temperate broadleaf forests are undergoing alterations including a decline of the native sugar maple (Acer saccharum), as the species’ population begins to decrease...
Ecosystems are highly heterogeneous systems subjected to important levels of environmental variability; however, it is common in terrestrial biogeochemical models to assume homogeneous properties of the elements of the system or constant environmental conditions. For some processes, heterogeneity in these models is treated very simplistically, but there is not much...