Guides & Case Studies

Analyzing and interpreting spatial information.

New mapping methodology and ranking system for estuarine-upland transition zones is now available for San Francisco Bay

Decision Support Tool Identifies and Maps San Francisco Bay Estuarine-Terrestrial Transitional Zones

Brian Fulfrost of Brian Fulfrost and Associates and David Thomson with San Francisco Bay Bird Observatory (SFBBO), have developed a new mapping methodology and ranking system for transition zones called San Francisco Bay Estuarine-Terrestrial Zone Decision Support System.

The distribution of upland transitional habitats found along the margin of estuaries is critical to tidal marsh ecosystems and generally not well understood. This project is the first to describe and map these potential habitats around the Bay and propose a ranking system for predicting their restoration potential and likely conservation value. Rankings are based on indicators of habitat function described in their "transitions zone definition report".

The transition zone mapping and raking method has already been ...