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Training

Coyote Ridge Serpentine Grasslands Field Trip

Coyote Ridge Serpentine Grasslands Field Trip program image

Date

Thursday, April 7, 2005
10:00 AM - 3:00 PM
Coyote Ridge
San Jose
Lunch will be provided

COST: FREE

REGISTRATION FOR THIS PROGRAM IS CLOSED


Instructor Information

Stuart Weiss
Consulting Ecologist
Creekside Center fo Earth Observations

Contact

Grey Hayes
grey@elkhornslough.org
(831) 274-8700

Sponsors

Description

See also: Serpentine Grasslands, Maintaining BiodiversityOn April 7th, 2005, 28 botanists, land managers, and grassland enthusiasts braved the rain and the wind to visit one of the few areas of serpentine grassland in the greater Bay Area at Coyote Ridge in Santa Clara County. The trip was organized by the Elkhorn Slough Coastal Training Program and led by Dr. Stuart Weiss (stubweiss"at"netscape.net) from the Creekside Center for Earth Observations. Dr. Weiss is an expert in the area's natural history, ecology, and conservation. The day focused on identifying the main threats to serpentine grasslands - the loss of habitat from development and habitat degradation from the invasion of exotic weeds like Italian rye grass (Lolium multiflorum). We learned that exotic weed invasion is of particular concern due to increased nitrogen availability from atmospheric deposition. We discussed how some areas of California are more at risk of increased atmospheric deposition of nitrogen than others because of their proximity to urban centers, highways, and prevailing wind patterns. During the field trip we viewed and discussed several different management approaches including early season and late season cattle grazing. Fence lines where grazing did not occur also provided examples of how species diversity diminishes due to exotic weed invasion without active management. During our visit, we saw several rare or threatened species including Mt. Hamilton thistle (Cirsium fontinale var. campylon), Santa Clara Valley Dudleya (Dudleya setchellii), most beautiful jewelflower (Streptanthus albidus var. peramoenus), and the Bay Checkerspot Butterfly (Euphydryas editha bayensis). The presence of these rare or threatened species helped emphasize why proper management and an increased understanding of these systems through research must go hand-in-hand to ensure their persistence. We ended our day with a discussion of what had been learned, what research questions would be most helpful to address in the future, and what needs to take place for this to occur. As always, many questions were raised during the day. Some were answered while others were not. One of the goals of the Coastal training program and this website is to help continue these types of discussions after the event has ended. So please send us your unanswered questions (grey"at"elkhornslough.org); we and our panel of scientists will try and address them.

Documents and Publications

DOCUMENT AUTHOR / SOURCE
WORKSHOP MATERIALS
Contact List: Coyote Ridge Serpentine Grasslands Field Trip
PDF, 79KB


PEER-REVIEWED PUBLICATIONS
Cars, cows, and checkerspot butterflies: nitrogen deposition and management of nutrient-poor grasslands for a threatened species.
PDF, 2.8MB
Weiss, S.B.
Conservation Biology 13(6): 1476-1486
1999
Ecological Effects of Nitrogen deposition in the Western United States.
PDF, 730KB
Mark E. Fenn, Jill S. Baron, Edith B. Allen, Heather M. Rueth, Koren R. Nydick, Linda Geiser, William D. Bowman, James O. Sickman, Thomas Meixner, Dale W. Johnson, and Peter Neitlich
BioScience 53(4):404-420
2003
Nitrogen emissions, deposition, and monitoring in the Western United States.
PDF, 865KB
Mark E. Fenn, Richard Haeuber, Gail S. Tonneson, Jill S. Baron, Susanne Grossman-Clarke, Diane Hope, Daniel A. Jaffe, Scott Copeland, Linda Geiser, Heather M. Rueth, and James O. Sickman.
BioScience 53(4):391-403
2003
OTHER INFORMATION
Photo 1: Coyote Ridge Serpentine Grasslands Field Trip
JPG, 210KB
Mark Stromberg
Elkhorn Slough Coastal Training Program
2005
Photo 2: Coyote Ridge Serpentine Grasslands Field Trip
JPG, 124KB
Mark Stromberg
Elkhorn Slough Coastal Training Program
2005
Photo 3: Coyote Ridge Serpentine Grasslands Field Trip
JPG, 199KB
Mark Stromberg
Elkhorn Slough Coastal Training Program
2005
Photo 4: Coyote Ridge Serpentine Grasslands Field Trip
JPG, 230KB
Mark Stromberg
Elkhorn Slough Coastal Training Program
2005
Photo 5: Coyote Ridge Serpentine Grasslands Field Trip
JPG, 125KB
Mark Stromberg
Elkhorn Slough Coastal Training Program
2005
Photo 6: Coyote Ridge Serpentine Grasslands Field Trip
JPG, 135KB
Mark Stromberg
Elkhorn Slough Coastal Training Program
2005

Links

Special Plants of Coyote Ridge
http://www.stanford.edu/~rawlings/coyote/KCplants.htm

Questions and Answers

Submit a question on this subject and we'll provide an answer. info@elkhornsloughctp.org