Many of California’s watersheds have been cleared of their tree and shrub cover, often with the goal of improving grazing conditions for livestock. Large areas of these watersheds can remain with few trees because several oak species are not regenerating adequately to replace removed trees. As a result, these watersheds are susceptible to soil erosion, diminished and degraded wildlife habitat, and decreased water quality.
Read full articleAdina M. Merenlender
SlotSINGA123 situs slot gacor terpercaya
Modeling vineyard expansion in California’s north coast
Many of the policy deliberations on the environmental effects of new vineyard development revolve around the potential application of the California Environmental Quality Act. In particular, some forest and oak woodland conversion has resulted from recent vineyard expansion. Timberland conversions receive CEQA review through the Forest Practice Act (FPA), whereas clearing of oak woodlands and shrub communities generally do not. While a collection of county and city policies target a wide array of oak conservation objectives, these were not generally designed to address land-use conversion resulting from agriculture. In response to the need for more environmental oversight for vineyard development, county governments have developed various regulatory approaches.
Read full articleIntegrating Information at State, Regional and Local Scales
Watersheds are landscape mosaics; therefore, watershed structure and function is dependent on scale. Temporal and spatial scales influence the inferences we can make about landscape patterns and processes. Spatial scale is the dimension of an object or process characterized by both grain and extent. Grain is defined as the finest level of spatial resolution possible with a given data set and extent is the size of a study area. The scale at which watershed measurements are taken influences our ability to detect spatial patterns. Biotic and abiotic processes vary in their operating scale.For example, anadromous fish are affected by stream and ocean environments. In contrast, native minnows are influenced by processes that occur within a stream or tributary.
Read full article