Posts Tagged: Robbin Thorp
What a treasure!
Have you seen the Xerces Society's new online Pollinator Conservation Resource Center?
This is something that's long been needed. It's a wealth of information--that's why it's a treasure.
As Matthew Shepherd of the Xerces Society for Invertebrate Conservation says: "...the resource center gives access to all you need to complete a pollinator conservation project in any region of the United States. When you visit the resource center, select your region from the map to access plant lists, details of creating and managing nest sites, pesticide protection guides, and practical guidance on planning and implementing habitat projects on farmlands, gardens, golf courses, parks, and wildlands."
"We want the resource center to be the most comprehensive source of pollinator conservation information currently online and will update it as often as we can, adding new materials as they become available."
Shepherd says the resource center is "the result of a collaboration with Neal Williams of the University of California, Davis. In particular, we thank Katharina Ullmann, previously with the Xerces Society and now a member of Neal Williams' research group, for gathering many of the resources."
Among the others lending their expertise: native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis who maintains an office in the Harry H. Laidlaw Jr. Honey Bee Research Facility.
How easy is it to use this site?
Say, for example, you want to plant a bee friendly garden. All you do is click on a link and you'll know what to plant seasonally in your area and what each plant will attract. Then you can click on the various pollinators to see what they look like.
If this Web site were gold, it would be in Fort Knox.
Female sweat bee
The warmth of the sun and the lure of nectar beckoned the hover flies or flower flies to our bee friendly garden.
We saw this one nectaring the rock purslane (Calandrinia grandiflora) last weekend. Native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis, identified it as "family Syrphidae, probably the genus Platycheirus."
It stood quite still, sipping the nectar and soon honey bees and a mason wasp joined it.
But for a minute, it seemed to have a "Mine" sign slapped on the blossom.
Hover fly on rock purslane
Ready for Take-Off
This uniquely colored bee is just one of some 1600 native bee species in California.
It's about one-fourth the size of a honey bee and it's difficult to photograph because (1) it's tiny and (2) it moves fast.
Gordon Frankie, professor in the Department of Environmental Science, Policy and Management, UC Berkeley, and Robbin Thorp, emeritus professor of entomology at UC Davis, and their colleagues wrote an excellent article on native bees being a rich natural resource in urban California gardens, published in the current edition of the California Agriculture journal.
You'll also want to see the video on the home page about attracting native bees to your garden.
We photographed this male Agapostemon texanus at the Mostly Natives Nursery in Tomales.
It vanished within seconds.
Green Metallic Sweat Bee
It's time to pop open a bottle of champagne and do a happy dance.
Finally, finally, we saw a yellow-faced bumble bee (Bombus vosnesenskii) in our yard.
After a 20-year absence.
Dusted with yellow pollen, it (or rather he) was nectaring the rock purslane--he, along with assorted honey bees and hover flies.
This Bombus brought to mind the May 27th Webinar that bumble bee expert Robbin Thorp, emeritus professor of entomology at UC Davis presented on "The Plight of the Bumble Bees" at UC Davis.
At the Webinar, he focused on Franklin's bumble bee (range of southern Oregon and northern California) and now feared extinct.
Thorp, a fellow of the California Academy of Sciences since 1986, is a noted authority on bumble bees. In June he served as a key speaker at a public symposium on "The Plight of the Bumble Bees" at the Smithsonian Institution, Washington, D.C. His topic: "Western Bumble Bees in Peril."
Bumble bees need our protection.
As Thorp says: "“The loss of a native pollinator could strike a devastating blow to the ecosystem, economy and food supply."
Yellow-faced Bumble Bee
Cover with Pollen
It's smaller than a honey bee.
And faster and louder.
Anthophora urbana, a solitary, ground-nesting bee, frequents our garden to nectar the catmint, lavender and sage.
Sometimes the forager's buzz is so loud that it's startling. "What was THAT?"
In this case, THAT is a female Anthophora urbana, as identified by UC Davis pollinator expert Robbin Thorp, emertus professor of entomology.
It belongs to the family Apidae, as do honey bees, carpenter bees, cuckoo bees and others. In sheer numbers, it's one of the largest in the Apidae family--more than 450 species worldwide in 14 different subgenera.
It may be tiny, but its buzz isn't.