Posts Tagged: Katharina Ullmann
You'll learn more about honey bees if you attend the Crop Pollination Workshop next month.
UC Cooperative Extension Apiculturist Elina Niño of the UC Davis Department of Entomology and Nematology will speak on “Multiple Stresses Impact Honey Bees” at the Crop Pollination Workshop on Tuesday, Feb. 3 on the Colusa County Fairgrounds, 1303 10th St., Colusa.
Niño is the first of six speakers at the workshop, which begins at 1 p.m. and continues through 3:30 p.m.
Pollination is important for a number of crops grown in Colusa County, said workshop coordinators Katharina Ullmann of the Xerces Society and Farm Advisor Rachael Long, Yolo County Cooperative Extension Office. At the Crop Pollination Workshop, regional experts will share the latest on honey bee health, onion pollination, management practices that support pollinators of cucurbits and almonds, and how to encourage beneficial insects on your farm using hedgerows.
The event is free and open to all interested persons. No reservations are required. Sponsors include UC Cooperative Extension (UCCE) Xerces Society, UC Davis, UC Berkeley, Colusa County Resource, and UC Agricultural and Natural Resources.
The complete schedule:
1 p.m. Welcome
1:05 p.m. "Multiple Stresses Impact Honey Bees" by Elina Niño, UC Davis Department of Entomology and Nematology
1:25 p.m. “Insecticides Reduce Honey Bee Visitation and Pollen Germination in Hybrid Onion Seed Production” by Rachael Long, Farm Advisor, UCCE, Yolo County
1:50 p.m. “Best Management Practices for Squash and Pumpkin Pollinators” by Katharina Ullmann, Pollinator Conservation Specialist, Xerces Society and formerly of UC Davis (she received her doctorate in entomology last year)
2:15 p.m. “Enhancing Habitat in Almonds and Almond Pollination” by Kimiora Ward, staff research associate, UC Davis Department of Entomology and Nematology
2:40 p.m. “Hedgerows Enhance Pollinators and Pollination Services” by Lauren Ponisio, graduate student, Environmental Sciences and Policy Management, UC Berkeley
3:05 p.m. “Hedgerows Enhance Biodiversity and Provide Crop Benefits in Agricultural Landscapes” by Rachael Long, Farm Advisor, UCCE, Yolo County
3:20 p.m. “USDA-NRCS Financial and Technical Support for Hedgerows,” Andrea Casey, Colusa NRCS DC
For more information, contact Long at (530) 666-8734 or email@example.com.
Katharina Ullmann, who just received her doctorate in entomology from UC Davis and is now a pollinator conservation specialist for the Xerces Society, is co-coordinator of the workshop. (Photo by Neal Williams)
But among the people who study pollinators, it is.
Also known as a squash bee, it is an important pollinator of cultivated crops of squash, pumpkins, and others members of the genus Cucurbita.
Enter Katharina Ullmann, a graduate student in the Neal Williams lab in the Department of Entomology and Nematology at the University of California, Davis.
She researches them, studying their persistence in agricultural landscapes.
And on Wednesday, June 4, Ullmann will present a seminar on her research: "Squash Bee Persistence in Agricultural Landscapes: the Role of Connectivity and Disturbance" from 12:10 to 1 p.m. in 122 Briggs Hall, located off Kleiber Hall Drive. This is the last in the series of spring seminars hosted by the department.
"It is well documented that wild native bees can benefit many crops through increased seed and fruit set, thus providing sustainable pollination alternatives in cases of honey bee decline and increased honey bee rental prices," Ullmann says. "Yet, it is unclear how to best manage crop systems to support wild native bees. Research on enhancing wild native bees has historically focused on field border management. However, to ensure the sustainability of a crop-pollination system, a comprehensive approach should also include within field practices."
"Promoting a whole-farm pollinator management strategy is especially important given that agricultural intensification is associated with practices that negatively impact wild native bees. Whole-farm strategies may provide effective alternatives for growers who are slow to adopt resource-intensive, border-management practices. The proposed project will contribute to our understanding of these strategies by determining the impact of tillage practices and crop rotations on a ground-nesting, native bee that is an important pollinator in a specialty crop system."
Ullmann said that Cucurbita crops (including squash and pumpkin) rely on pollinators to set fruit. "The specialist squash bee, Peponapis pruinosa, is an important pollinator of Cucurbita and can reduce grower reliance on rented honey bee colonies. In-field management is particularly relevant for this species given that it nests preferentially below its host's vines. I will use observational surveys and manipulative experiments to identify crop rotation schemes and tillage practices that benefit P. pruinosa. These results provide insights into how species persist in agricultural landscapes, with an emphasis on the roles of connectivity and disturbance."
Ullmann, who expects to receive her doctorate in entomology in September 2014, researches population persistence in dynamic landscapes, and on-farm beneficial insect habitat enhancements. Her interests also include supporting citizen science, translating research related to pollinator conservation and encouraging dialogue between researchers and farmers.
She developed a native bee YouTube channel aimed at providing a direct line of communication between university researchers, farmers and the general public. In addition, she developed the blog Pollinator Farm and associated social media handles on Twitter and Facebook.
Ullmann's seminar on June 4 is to be video-recorded for later posting on UCTV.
Squash bee, Peponapis pruinosa, on a squash blossom. (Photo by Kathy Keatley Garvey)
The squash bee, Peponapis pruinosa, is a specialist, pollinating only the Cucurbita genus. (Photo by Kathy Keatley Garvey)