Scientists working on Sudden Oak Death can instantly download detailed location information for use in their research. Here's an example.

Calflora is a library. We provide access to original data from many sources. You'll always find references and source descriptions to help you evaluate what you find.

Comments or suggestions? Email us at calflora@calflora.org

Photographs	Taxon Report	Static Distribution Maps (check date on map)			Observation Reports (average query time in parenthesis)
		Small 360 x 378 ~12kb	Medium 720 x 756 ~25kb	Large 1440 x 1512 ~50kb
	Big-leaf maple Acer macrophyllum	Small	Medium	Large	Table and Distribution Map (20 seconds) 1200+ observations	Interactive Map of Observation Points (18 seconds) 410 point observations
	California buckeye Aesculus californica	Small	Medium	Large	Table and Distribution Map (10 seconds) 550+ observations	Interactive Map of Observation Points (10 seconds) 29 point observations
	Pacific madrone Arbutus menziesii	Small	Medium	Large	Table and Distribution Map (43 seconds) 2,600+ observations	Interactive Map of Observation Points (43 seconds) 1,100+ point observations
	Common manzanita Arctostaphylos manzanita	Small	Medium	Large	Table and Distribution Map (10 seconds) 650+ observations	Interactive Map of Observation Points (10 seconds) 54 point observations
	Toyon Heteromeles arbutifolia	Small	Medium	Large	Table and Distribution Map (40 seconds) 1,500+ observations	Interactive Map of Observation Points (15 seconds) 600+ point observations
	Tan Oak Lithocarpus densiflorus	Small	Medium	Large	Table and Distribution Map (1 min.) 3,500+ observations	Interactive Map of Observation Points (1 min.) 1,500+ point observations
	California honeysuckle Lonicera hispidula var. vacillans	Small	Medium	Large	Table and Distribution Map (11 seconds) 620+ observations	Interactive Map of Observation Points (8 seconds) 110+ point observations
	California coffeeberry Rhamnus californica	Small	Medium	Large	Table and Distribution Map (40 seconds) 1,400+ observations	Interactive Map of Observation Points (9 seconds) 325+ point observations
	Coast Live Oak Quercus agrifolia	Small	Medium	Large	Table and Distribution Map (40 seconds) 2,000+ observations	Interactive Map of Observation Points (40 seconds) 700+ point observations
	Black Oak Quercus kelloggii	Small	Medium	Large	Table and Distribution Map (1 min. 30 sec.) 5,500+ observations	Interactive Map of Observation Points (1 min. 30 sec.) 2,500+ point observations
	Shreve's Oak Quercus parvula var. shrevei	Small	Medium	Large	Table and Distribution Map ( 0 seconds ) 7 observations	no point observations currently reported
	Coast Rhododendron Rhododendron macrophyllum	Small	Medium	Large	Table and Distribution Map (10 seconds) 500+ observations	Interactive Map of Observation Points (10 seconds) 100+ observations
	California laurel, bay tree Umbellularia californica	Small	Medium	Large	Table and Distribution Map (20 seconds) 900+ observations	Interactive Map of Observation Points (20 seconds) 90+ observations
	California Huckleberry Vaccinium ovatum	Small	Medium	Large	Table and Distribution Map (20 seconds) 900+ observations	Interactive Map of Observation Points (9 seconds) 250+ observations

Photographs	Taxon Report	Static Distribution Maps (check date on map)			Observation Reports (average query time in parenthesis)
		Small 360 x 378 ~12kb	Medium 720 x 756 ~25kb	Large 1440 x 1512 ~50kb
	Partial list of Hosts Species Arbutus menziesii, Lithocarpus densiflorus, Quercus agrifolia, Quercus kelloggii, Quercus parvula var. shrevei, Rhododendron macrophyllum, Umbellularia californica, Vaccinium ovatum	Small	Medium	Large	Table and Distribution Map (6 min. 30 sec.) 16,300+ observations	Interactive Map of Observation Points (4 min.) 6,400+ point observations
	All Oaks Quercus (all species)	Small	Medium	Large	Table and Distribution Map (9 min. 30 sec.) 26,000+ observations	Interactive Map of Observation Points (4 min.) 9,900+ point observations
	All Rhododendrons Rhododendron (all species)	Small	Medium	Large	Table and Distribution Map (15 seconds) 900+ observations	Interactive Map of Observation Points (14 seconds) 140+ point observations
	All Vaccinium Vaccinium (all species)	Small	Medium	Large	Table and Distribution Map (40 seconds) 2,000+ observations	Interactive Map of Observation Points (40 seconds) 380+ point observations

Links

Example Use of Calflora in Research

Thousands of tanoaks and oaks are dying along the California coast. Dubbed Sudden Oak Death, mortality was first reported in 1995 in Marin County affecting tanoak (Lithocarpus densiflorus). Since then mortality has been observed in coast live oak (Quercus agrifolia), black oak (Q. kelloggii), rhododendron and huckleberry (California bay laurel and Madrone added in April 2001, California Buckeye added July 2001, Bigleaf Maple and Common Manzanita added September 2001, California coffeeberry, Toyon, California honeysuckle). The primary cause of Sudden Oak Death (SOD) has been identified as a new species of the pathogen Phytophthora.

The State of California in cooperation with the USDA-Forest Service is researching the behavior of this new exotic pathogen in CA oak woodland ecosystems and putting together a plan to minimize the spread of this deadly microbe. Researchers and plant pathologists utilized the Calflora and Fire Effects Information System databases.

Both these databases are being used to aid in surveying the native rhododendron and huckleberry (Vaccinium). The information is being used for two key aspects of the problem: regulation and understand pathogen behavior. First the Calflora database is being used as the basis for a survey to determine the incidence and impact of the pathogen on the native plants. The survey results and some of the ecological information are required in order to implement regulations to prevent the movement of the pathogen on rhododendron, huckleberry or other nursery stock. In order to implement regulations the State requires a survey to delimit where the pathogen is as well as where it is not. The Calflora database provided instant assess to the known locations of the plants that will be checked for infection. Its web access allowed scientists at several locations and universities throughout the state to get to the information.

Both the information in Calflora and the FEIS database are also being used to understand the wildlife, ecological and social impacts of sudden oak death. Since the pathogen seems to reproduce and colonize woody shrubs quite readily, investigations of pathogen spread and behavior in natural ecosystems are also being aided by the information. In some ways this invasive organism is acting very much like a fire - so information in the FEIS database is useful as it is when examining fire impact and restoration.