ANR Employees
University of California
ANR Employees

Posts Tagged: Oak Woodlands

Presentation proposals for California Oak Symposium due Aug. 10

The 8th California Oak Symposium is scheduled to be held March 22-25, 2021, at Embassy Suites, San Luis Obispo. The theme for the conference is “Sustaining Oak Woodlands Under Current and Future Conditions.” 

Presented by UC Agriculture and Natural Resources, the 8th California Oak Symposium is intended for anyone involved in research, education, management and conservation of California's oak woodlands. Participants may include foresters, range managers, tribes, arborists, landowners, community groups, land trusts and policymakers.

UC ANR colleagues are invited to share their oak-related work. To propose an oral presentation or poster for consideration, please submit an abstract at http://ucanr.edu/8thoakabstracts by Aug. 10.

View the symposium agenda at http://ucanr.edu/files/331101.docx

A Symposium Planning Committee and the UC ANR Program Support Unit are organizing the symposium and monitoring the new coronavirus (COVID-19) conditions so conference details may change.

“We will go virtual if COVID-19 regulations are still in place in March,” said Bill Tietje, UC Cooperative Extension specialist and chair of the planning committee.

Registration will open in the fall. For more information, visit https://ucanr.edu/sites/oaksymposium or contact Tietje at tietje@berkeley.edu.

 

 

Posted on Tuesday, July 28, 2020 at 1:34 PM

Hundreds sign up for online oak woodland workshop

California oak woodlands are highly prized ecoregions where stately trees, many of them hundreds of years old, are cornerstones of a habitat for wildlife and native plants. Sadly, some of these ecosystems are seriously threatened by exotic pests and diseases, encroachment by less desirable vegetation, and wildfire.

Each year, UC Cooperative Extension hosts workshops to share scientific developments aimed at conserving these important habitats – and the economic value of ranching – on oak woodlands, which are found on the lower elevation slopes of the Sierra Nevada, the Coast Range and other foothill areas of California.

Typically, the workshops are held in person and draw moderate-sized audiences for presentations, questions and answers, and field trips. Because of the COVID-19 pandemic, this year's workshop was offered online in April with pre-recorded presentations available for viewing at the participants' convenience and a live question-and-answer session on Zoom.

The retooled event garnered 500 registrants, over 300 views of the YouTube videos and 140 participants in the live Q&A session. The presentations and Q&A session are still available online for future viewing as well.

“People from all walks of life participated, including those with professional and personal interest in oak woodlands,” said Yana Valachovic, UCCE forest advisor in Humboldt and Del Norte counties and a conference organizer.

UCCE research on the impact of conifer encroachment helped facilitate policy changes that make it easier for California landowners to remove conifers from oak woodlands. Photo by Yana Valachovic

Presentations at the 2020 conference included the following topics:

Encroachment by Douglas-fir

In Northern California, the biodiversity of oak woodlands is being threatened by Douglas-fir encroachment. The oaks' shade helps the young conifers get established with protection from harsh sun. In time, the fast-growing Douglas-fir trees pierce the oak canopies and begin to crowd out the areas' native understories, which are important for the diversity of birds, mammals and reptiles attracted to oaks.

As the Douglas-fir continue to grow and multiply, they threaten the very lives of the oak trees and the unique ecosystem they dominate.

To better understand the Douglas-fir encroachment, Valachovic established 10 research sites in Humboldt and Mendocino counties to gather information about the fate and the age of oaks. She and her research partners determined the ages of the oaks and firs, and counted the seedlings, saplings, snags and understory vegetation.

“With this research, we were able to demonstrate that even though the oak trees can be smaller in diameter they are much older than the Douglas-fir trees,” Valachovic said. “The encroachment process is happening quickly, and the oaks are falling out of the system.”

The shift appears to have been initiated in the mid-19th and early-20th centuries, coinciding with the Gold Rush and wildfire suppression.

With the data confirming Douglas-fir encroachment, Valachovic turned her attention to oak woodland restoration. At 14 sites in Humboldt and Trinity counties, her team studied the effects of Douglas-fir removal.

“Grasses and forbs under the oaks reestablished. Diameter growth on the oaks increased,” she said.

These research findings contributed directly to changes in policy that had previously limited land owners' ability to remove and sell conifers encroaching on oak woodland. The research also helped create new funding opportunities to support oak woodland restoration and conservation in Northern California.

The River Fire, which burned through much of the UC Hopland Research and Extension Center in 2018, provided many opportunities to study the regenerative aspects of fire on oak woodland.

Case study of oak woodland wildfire recovery

In July 2018, about two-thirds of the 5,289-acre UC Hopland Research and Extension Center was burned by the River Fire.

The transformation of the land, which had likely been without a large wildland fire for at least 100 years, was intense and stressful, said UC Cooperative Extension forest advisor Michael Jones. However, it also provided a unique opportunity for researchers to compare the impact of wildfire on the resiliency of vegetation on grazed and ungrazed oak woodland.

Jones established 35 one-fifth acre research plots at the research center and collected data two months following the fire and one year later. The research will continue in the future to better understand long-term impacts, but Jones was able to share revealing early results at the workshop.

Right after the fire, in severely burned areas areas, the future of the oaks looked ominous. Jones predicted 40% tree mortality.

“The oaks were exposed to persistent, intense heat. They were cooked,” he said. “But two months after the fire, we were already seeing basal sprouts. This was an amazing response by the trees. Oaks are pretty damn tough.”

A year after the fire, surveys showed that tree mortality in the burned areas was 25%, much less than Jones' early predictions. While some management for specific situations in severely burned areas may be necessary – such as removal of hazard trees, reducing fuels in defensible spaces or removal to control invasive species – the results of this work show the trees recover naturally.

“Esthetically, I know these systems aren't as pleasing as they were before, but ecologically, they are healthy and recovering,” he said. “In 100 years, it will look just as good as before the fire.”

John Bailey, right, director of the UC Hopland Research and Extension, speaks with UC ANR vice provost Mark Lagrimini where fire impact was evident shortly after the River Fire.The pasture on the left of the fence was grazed, the area on the right was not grazed.

Fire impacts in woodland areas previously grazed and not grazed

The fire on the research station also permitted Jones to compare the fire's differing impact on non-grazed and grazed oak woodland. At first, the grazed areas looked almost unscathed with minimal flame scorching on the bark, while an area where the pasture hadn't been grazed for 25 years had evidence of much higher severity fire.

“Grazing is a phenomenal way to help manage fuels,” Jones said. However, the grazed areas displayed ecological shortcomings a year later.

“In grazed pastures, the large mature trees were still alive, but there was no oak regeneration (basal sprouting or seedlings),” Jones said. “In the ungrazed area, a lot of biomass had been killed, but there's nearly 100% resprout of oak trees and we have an impressive amount of oak seedling recruitment.”

Jones said he isn't discouraging grazing.

“But it is important to protect sites from grazing, and especially wildlife browse, when a landowner or land managers' objectives are to regenerate or conserve oak woodlands,” Jones said.

A ball point pen points to a Mediterranean Oak Borer, indicating its tiny size.

New ambrosia beetle another threat to California oaks

Akif Eskalen, UC Cooperative Extension specialist in the Department of Plant Pathology at UC Davis, has identified a new insect-fungus team that causes oak borer wilt in Northern California Valley and Blue Oaks. It is an ambrosia beetle, commonly known as Mediterranean Oak Borer, which carries several fungi in its mouth. The beetle bores into the tree and introduces fungi to grow for food. The fungi spreads and disturbs the transportation of water and nutrients, causing wilt in the tree.

The oozing and staining lesions on the bark are similar to other oak fungal diseases, such as Sudden Oak Death. The beetle – native of Mediterranean basin countries in Africa, Asia and Europe – cannot fly far, so most likely is transported for long distances on infested firewood.

During the workshop, Eskalen suggested not moving firewood, removing heavily infested trees and chipping infested wood into 1-inch particles to reduce the spread of the ambrosia beetle and its fungal partner. He asked viewers to report any suspected oak tree infestations to the local agricultural commissioner, CDFA Diagnostic Laboratories, UC Cooperative Extension advisors or CALFIRE. Chemical options for sparing oaks from the ambrosia beetles' devastation are under investigation.

A botanical specimen of Ione manzanita, a federally listed threatened species, is susceptible to root rot caused by introduced Phytophthora in its natural range. (Photo: Wikimedia Commons)

Threats to oaks and other native plants from root rotting Phytophthora

Restoration plantings have inadvertently introduced plant pathogens to native oak woodland  ecosystems in California, said Ted Swiecki of Phytosphere Research, an organization that provides consulting services related to natural resource management, horticulture, urban forestry, and agriculture. The group of pathogens causing the damage are largely from the Phytophthora genus, first described in the 1860s. The name translates from Greek to “plant destroyer.” 

Swiecki has observed when Phytophthora infested plants and soils are introduced to native habitats, the pathogens can attack various native plants, including toyon, madrone, manzanita and full-grown oaks. Once established, the pathogen can spread along drainages, by moving soil from one area to another and by hitchhiking on equipment, tires and hiking boots.

The pathogen can easily be overlooked at nurseries, which, by their nature, have conditions that favor Phytophthora development. Plants at nurseries are well watered, have high root density and are often placed on the ground where they can pick up pathogens.

He said the best approach to tackling Phytophthora is not using nursery stock for restoration or beautification of natural oak woodland. Direct seeding, using natural regeneration, or onsite propagation are safer ways to enhance vegetation in oak woodland.

“It's easier to prevent Phytophthora from being introduced in the first place and much cheaper and more effective than trying to eradicate it later,” Siewcki said.

Posted on Tuesday, April 28, 2020 at 11:34 AM
Focus Area Tags: Environment

Thank you, and looking ahead for a great 2017!

Dear Colleagues,

As we wrap up 2016, I want to take a moment to thank you for everything you've done on behalf of UC ANR this year. Whether you are conducting research, organizing extension programs, teaching nutrition, leading volunteers or quietly working behind the scenes to support our various activities, your work makes a huge difference in the lives of all Californians.

In addition to those activities, many of you also took the time to give feedback to the recent strategic planning exercise, gathered to exchange ideas at the Research to Policy conference, or contributed to enhancing the UC ANR mission in many other ways.  A special thanks to the folks who chaired a committee, led a program team or served as county director – having strong, passionate leaders at every level of this organization is what makes us effective.

We are continuing to grow in numbers as hiring outpaces retirements. In 2016, 29 academics joined UC ANR and three more are poised to start in 2017. We also established four new endowed chairs with matching funds from UC President Janet Napolitano, the California Rice Research Board, the California Pistachio Research Board and, recently, the Orange County Farm Bureau. Thanks to the hard work of many stakeholders – both internal and external – we identified 26 academic positions (http://ucanr.edu/sites/anrstaff/files/253192.pdf) for a new round of hiring priorities over the next two years. 

At the request of President Napolitano, we've submitted a five-year plan for UC ANR that will help us operationalize the Strategic Vision 2025 in a very thoughtful and timely manner. The next step is to further develop specific action plans for implementation and ensure the financial stability to support our vision. After the winter break, we will share the plan with the UC ANR community, as well as external stakeholders, and invite additional input as we move forward.

I'm very excited about 2017!  Some great groundwork has been laid this past year to further enhance our ability to deliver the UC ANR mission and enjoy new partnerships. I hope you will have a chance to relax and enjoy the holidays with friends and family and return refreshed to tackle the challenges that await us in the new year.

Happy Holidays!

Glenda

Glenda Humiston
Vice President

 

Posted on Tuesday, December 20, 2016 at 2:16 PM

DANRIS-X launches into Project Board with webinar trainings

DANRIS-X has been updated and Project Board will open for 2018 reporting.

DANRIS-X has been updated and will eventually be replaced with the newly created Project Board for UCCE specialists and advisors. When DANRIS-X opens for reporting, users will see a reduced number of data fields and an aesthetic refresh.

Project Board will open for 2018 reporting and will have an improved user experience and simplified data entry. Special thanks to the Project Board Academic Advisory Committee and Project Team for their continued involvement. More information can be found at http://ucanr.edu/sites/anrstaff/Divisionwide_Planning/Program_Planning_and_Evaluation/DANRIS-X/.

Upcoming dates and action items:

CE Specialists

  • DANRIS-X opens Jan. 9
  • All CE specialists are invited to the Zoom webinar trainings offered on Jan. 20, from 10 a.m. to 11:30 a.m., or Jan. 24, from 2 p.m. to 3:30 p.m. Topics include an overview of the reporting system, what and why we report, etc.
  • Actions: Complete Annual Report for FY 2016 and Annual Plan for FY 2017 by March 6, 2017, at midnight.

CE Advisors

  • DANRIS-X opens on Feb. 2
  • All CE advisors are invited to the Zoom webinar trainings offered on Feb. 6, from 2 p.m. to 4 p.m., or Feb. 7, from 10 a.m. to 12 noon. Topics include an overview of the reporting system, what and why we report, etc.
  • Actions: Complete Annual Report & CASA for FY 2017 and Annual Plan for FY 2018 by Oct. 30, 2017, at midnight.

If you have questions or comments, please contact Kit Alviz, Program Planning and Evaluation, at kit.alviz@ucop.edu or (510) 987-0027.

 

 

Posted on Tuesday, December 20, 2016 at 2:14 PM

Names in the News

Mary Maffly Ciricillo
Ciricillo named director of Annual Giving

Mary Maffly Ciricillo brings more than 20 years of professional experience to her new role as the director of Annual Giving for UC ANR. She comes to ANR from the UC Davis Graduate School of Management, where she was director of Development & Alumni Relations, steward of the Business Partnership Program and point person on building connections, community and involvement of the school's alumni.

Ciricillo has spent the last 10 years in diverse roles at UC Davis, creating and growing programs that help further university goals. She launched UC Davis goClub, the campus alternative and sustainable transportation program. To get goClub rolling, Ciricillo signed on sponsors, built new relationships across campus and the business community, and revved up the marketing plan to encourage campus commuting options, such as carpool, vanpool, bike, walk, bus and train.

Before joining UC Davis, Ciricillo was an account executive in the communications industry, developing branding and marketing solutions. Her clients included The Gap, Oracle, Knight Ridder Newspapers, the San Francisco Ballet and the Tech Museum of Innovation in Silicon Valley.

She earned a B.A. in history with a minor in business from San Francisco State University.

Based in Davis, Ciricillo can be reached at (530) 750-1302, cell (530) 219-1085 and mciricillo@ucanr.edu.

Glenn County Soil Partnership from left, Dani Lightle, Betsy Karle, Kandi Manhart, RCD executive officer, and Rob Vlach NRCS district conservationist.

Karle and Lightle on team honored for conservation innovation

The USDA Natural Resources Conservation Service (NRCS) and California Association of Resource Conservation Districts presented its prestigious Excellence in Innovation award to the Glenn County Soil Partnership, which includes the Glenn County Resource Conservation District, UC Cooperative Extension in Glenn County and the NRCS field office in Willows.

Betsy Karle, UCCE county director and dairy advisor, and Dani Lightle, UCCE orchard systems advisor, both based in Glenn County, are among the partners working together to promote and encourage healthy soils and greatly increased local interest among farmers. Their goal is to increase awareness of the importance of soil health and to create a forum for farmers to share information and learn from each other. To ensure a locally led process, the partners created a farmer-led Steering and Technical Advisory Committee made up of farmers and local experts.

“Dani Lightle was a key player in the process and she has taken the opportunity to tackle some very interesting questions about cover cropping in orchards,” said Karle. “UCCE specialist Jeff Mitchell has also been a key motivator and has logged hundreds of miles and countless hours to support the effort.”

“Your partnership is bringing back a focus on conservation planning, technical assistance and management change motivated by the desire to enhance the health of the soil resource,” said NRCS state conservationist Carlos Suarez, who presented the award.

“You wisely chose to root your leadership in local farmers and agencies, combining agency and university technical knowledge with private business skills and real world know-how. This makes your partnership credible and inspiring to local farmers who are open to improving the health of their soil.”

“This is the best way to engage our customers in conservation planning that results in regenerative agriculture and ecological benefits,” Suarez said.

The Soil Partnership received the award on Nov. 17 during the 71st annual California Association of Resource Conservation Districts' conference in Ontario.

Sabrina Drill
UC CalNat associate director named to national organization board

UC Cooperative Extension natural resources advisor Sabrina Drill has been elected to the board of the Alliance of Natural Resource Outreach Service Programs (ANROSP). Drill is associate director of the UC California Naturalist Program.

ANROSP is the national organization in which master naturalist programs from around the country share methods and information to train naturalists, build local and statewide communities, and support their efforts to protect, enhance, understand, and teach the public about each state's unique natural history.

“As a board member, the things I am most keen to work on are strengthening efforts to professionalize participatory citizen science, and build bonds with groups like the new Citizen Science Association and communities of practice like SciStarter,” Drill said. “In addition, I want to build on our individual efforts to increase the demographic diversity of naturalists.”

Drill's role in the national organization will support the continued growth and development of the California Naturalist program, which was established in 2012.

“Working across states, I think we'd like to again see how we might garner national support to grow our programs, and see where we can use nationally developed educational and evaluation tools,” Drill said. “For example, we recently published a paper in Conservation Biology with Virginia Master Naturalist looking at how our training programs enhanced individuals' experiences as citizen scientists, and the opportunity to compare programs was very enlightening. Being an active part of ANROSP leadership can enhance these efforts.”

ANROSP holds a national conference each year in September, where it presents awards in five categories: program of the year, outstanding educational materials, outstanding team, outstanding volunteer project and outstanding program evaluation. In 2015, the UC ANR California Naturalist program was named the “program of the year” by ANROSP

Posted on Tuesday, December 20, 2016 at 1:53 PM

Read more

 
E-mail
 
Webmaster Email: jewarnert@ucanr.edu