[Pollinator] GREAT Gordon Frankie Interview in SF Chronicle
Ladadams at aol.com
Ladadams at aol.com
Sat Mar 3 08:31:06 PST 2007
Dr. Gordon Frankie did a terrific interview in today's SF Chronicle about
ways gardeners can help bees and he shared the word about Pollinator Week, the US
Postal Stamps, NAPPC and the NAPPC Website. Absolutely great! Laurie
SFGate Web by
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BEES ON THEIR KNEES, GARDENERS TO THE RESCUE
A world without bees is a world without chocolate
UC professor says urban gardeners could save California's native bee
population and avert an ecological catastrophe
Alison Rood, Special to The Chronicle
Saturday, March 3, 2007
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When Professor Gordon Frankie wants to impress schoolchildren with the
importance of bees, he lays out an array of foods such as berries, grapes, pears and
chocolate alongside a couple of dried-out tortillas and rice cakes and asks
them which foods they prefer.
"Invariably the kids go for the fruits and chocolate," he said. "Then I tell
them: In a world without bees, the only choice they'd have would be the
dried-out tortillas or rice cakes, since wheat and rice are self-pollinated. Even
chocolate, from the cacao plant, depends on the pollination of bees. That gets
their attention."
Frankie, an entomologist at UC Berkeley and a specialist in the behavior of
native bees, has been the leader of a decadelong urban bee research project.
By documenting bee diversity and populations in urban gardens throughout
California, he's discovering which flowering plants attract native bees and
determining whether urban gardens can support bees. He said the declining native bee
population is comparable to global warming in terms of a potential ecological
catastrophe.
"We're losing our star pollinators," he said, "so it's important to try to
do something on an individual basis. A lot of what people grow now is dependent
on bees and other invertebrates, but people just don't see or know that these
insects are providing a lot of free services."
There are 1,600 species of native bees in California. Native bees, or wild
bees, as they are sometimes called, have evolved with their native host flowers
over a long period of time. Honeybees, on the other hand, were imported to
America from Europe.
In other words, honeybees are an exotic species, but native bees, as the
name implies, have always been here. Native bees also differ from honeybees
because most are not social and make individual nests rather than rely on a colony.
Although they don't produce honey, native bees pollinate about one-third of
our vegetable, fruit and nut crops as well as almost all of our wildflowers.
Today, suburban developments are replacing wild habitats where native bees
once thrived. Meanwhile, agricultural practices, which often include widespread
pesticide use and plowing under native plants, have been just as destructive.
Commercially managed exotic honeybee populations aren't faring any better.
During the past few years pesticides and parasitic mites have drastically
reduced their numbers.
A report in the Nov. 27, 2006, New York Times described the beginning of
what bee researchers are calling "colony collapse disorder," in which honeybees
are disappearing, flying off in search of pollen and nectar and not returning
to their colonies. Beekeepers in 24 states have been shocked to discover their
bees are gone, threatening the pollination of $14 billion worth of seeds and
crops, the Times said.
The dire circumstances facing our native pollinators is the motivation
behind Frankie's project. As native bees in the wild dwindled, Frankie began
documenting bee diversity and frequencies in urban environments to determine whether
urban gardens could support reasonable native bee populations.
"We count bees, or rather, we monitor their frequencies on flowers by doing
three-minute counts on patches of flowers that measure 1.5 meters by 1.5
meters," he said. "These counts are replicated several times in order to get an
average. We also do the counts over a period of years when the variations demand
it. These frequencies tell us which bee species are visiting and at what level
-- that is, low, medium or high. The frequencies can also be used to compare
cities and to monitor through time (over years) on given plant species."
The details of the procedure can be found on the UC Berkeley Web site, which
also provides a list of bee-friendly plants and offers a guide for building a
garden in which native bees will flourish. Frankie notes that not all bees
are interested in all flowers, so a variety of flowering plants is necessary to
encourage visits.
"Instead of planting a garden with only the flowers you enjoy, look around
at the flowering plants that are native to your area. Those are the plants that
will attract the bees. The bees know what they need, and they'll come. If you
plant it, they will come," he said.
One garden that is doing just that is the Old City Cemetery garden in
Sacramento.
"The Sacramento cemetery has an incredible variety of native bee species and
in large numbers," Frankie said. "It's one of our best sites in all of Calif
ornia."
One of Frankie's favorites is a tiny treasure -- a 14-by-14-foot space that
the owner has planted with 20 species of flowering plants in groupings of
eight to 10 similar plants called "patches."
Frankie emphasizes that planting the same varieties together is vital to a
successful bee garden; and, since native bees are seasonal, it's also important
to plant flowers that bloom successively over the spring, summer and fall.
He mentioned four experimental gardens in the Bay Area that boast a healthy
number of native bees, including the pollinator lab on the Berkeley campus.
The three others are at Lucas Valley School in Marin County, the Randall Museum
in San Francisco and the Livermore Community Garden. The Berkeley campus
garden will be showcased May 6 as one of 65 gardens in the Bring Back the Natives
Garden Tour.
Other public gardens with substantial native bee populations include the
arboretum at UC Santa Cruz and Descanso Gardens in Southern California.
When he's not collecting data in the field or teaching conservation and
environmental problem-solving in the classroom, Frankie strives to enlighten the
public about the importance of native bees through workshops, lectures and
outreach programs.
He's also always looking for bees -- even when driving through residential
neighborhoods. He said he doesn't hesitate to pull over if someone's front
garden looks promising. "People come out of their homes, wondering, 'Who is that
strange guy snooping around my flowerbeds?' "
Focusing attention on the pollinator crisis is also the goal of the North
American Pollinator Protection Campaign, an alliance of conservation and
environmental groups, private industry, and state and federal agencies. Its members
hope that by educating both the public and policymakers they can stop land use
practices that harm native bees.
The U.S. Senate has passed a resolution to protect pollinators and has
designated June 24-30 as National Pollinator Week. That month the U.S. Postal
Service will release a pollination stamp series.
How does providing a safe haven for pollinators in urban gardens relate to
the larger agricultural picture if farmers themselves aren't dedicated to
attracting native bees?
"Most of our research is designed for urban audiences, and we've learned
that urbanites like the idea of doing some conservation in their own yards,"
Frankie said. "The day may come when even more people want to grow urban food, and
we'll be able to tell them about their pollinator needs. Some of the bee
species in urban gardens could also be important in the future for agricultural
crops. In that sense, the urban garden environment may be regarded as a kind of
reservoir for genetic material."
The inspiration to create a bee-friendly garden should come as easily to
adults as it does to schoolchildren. All it takes is imagining a life without
fruits and vegetables -- and a life without chocolate.
Resources
Gordon W. Frankie, division of insect biology, 137 Mulford Hall, UC
Berkeley, CA 94720; (510) 642-0973; nature.berkeley.edu/urbanbeegardens.
Join a free tour of native-plant gardens in the East Bay from 10 a.m. to 5
p.m. May 6. For more information, visit www.bringingbackthenatives.net or call
Kathy Kramer at (510) 236-9558.
North American Pollinator Protection Campaign, www.nappc.org; (415)
362-1137.
E-mail comments to home at sfchronicle.com.
This article appeared on page F - 1 of the San Francisco Chronicle
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