The inventory phase of the SRHS involved identifying, mapping and evaluating the relative quality of different habitat types along the ridgeline and in the south hills, using both onsite and offsite inventory methods. The City of Eugene contracted with a consulting firm of professional biologists and botanists to conduct the inventory.
Owners of all properties over 0.5 acre were asked for permission for the consulting biologists to access their property for field studies. Only public lands and those private lands where property owner permission was given were studied using on-site methods. The consultants looked at the plants growing on the site and any special features that might indicate use by sensitive wildlife species, such as snag trees, woodpecker holes, or nests. Information from all of the individual properties were compiled into a larger map of native plant and wildlife habitats (see maps page).
Properties under 0.5 acre were studied using the off-site methods, due to the very large number of these smaller properties. On these small lots and where on-site access is not granted, the inventory consultant relied on existing sources of data, such as analysis of color aerial photos, existing maps, views of the property from public lands and rights-of-way, and analysis using the City’s computerized Geographic Information System (GIS).
After this preliminary mapping, the inventory map was further refined based on additional field information and feedback from property owners. Citizen and property owner input into the inventory process was extremely valuable in ensuring the most accurate inventory possible.