Native Pollinators in Trouble

  • Jeffrey Pettis says while honeybees are a concern because they pollinate crops, the wild plants that rely on native pollinators can be in trouble as well. (Photo courtesy of the US Fish and Wildlife Service)

Honeybees have been dying by the millions because of colony collapse disorder. But government officials say it’s not just the bees that are in trouble. Lester Graham reports.

Transcript

Honeybees have been dying by the millions because of colony collapse disorder. But government officials say it’s not just the bees that are in trouble. Lester Graham reports.

Jeffrey Pettis heads up the USDA’s bee lab in Beltsville, Maryland. He says there’s a lot of concern about honey bees because they pollinate crops. But he’s also really concerned about wild native bees, butterflies, bats that pollinate plants in the wild.

“The wild plants that rely on native pollinators can be in trouble as well. So, there’s certainly should be concern for all pollinators in addition to honeybees, which I like to think of as a major agricultural pollinator.”

Pettis says habitat destruction is hitting nature’s wild pollinators hard, but bats are also dying because of white-nose syndrome, a fungus that’s spreading, killing bats by the millions.

For The Environment Report, I’m Lester Graham.

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Computer Mapping for Endangered Butterfly

  • The Karner blue butterfly is an endangered species. (Photo courtesy of U.S. Fish and Wildlife Service)

There are several groups in the region working to protect and restore the endangered Karner blue butterfly. Now these efforts could be helped by a new computer mapping and statistical modeling technique. The Great Lakes Radio Consortium’s Chuck Quirmbach has more:

Transcript

There are several groups in the region working to protect and restore the
endangered Karner blue butterfly. Now these efforts could be helped by a
new computer mapping and statistical modeling technique. The Great Lakes
Radio Consortium’s Chuck Quirmbach has more:


Habitat maps for endangered species can be based on broad general
estimates. But some scientists hope a combination of computer
software and data such as soil type and vegetation will lead to
more accurate information on where the Karner Blue butterfly lives.


David Mladenoff is a professor of Forest Ecology at the University of
Wisconsin – Madison. He says having a better idea of the butterfly’s
habitat might save companies money on things like surveying costs.


“In other words, if they say we’re planning on doing work on this utility
right away or potentially harvest this area of forest, is this even
a place we have to be concerned about for the Karner Blue butterfly
occuring?”


The U.S. Fish and Wildlife Service, a state agency, and some power
companies are funding a computer mapping project in Wisconsin.
Scientists say the same technique could be used in other states.


For the GLRC, I’m Chuck Quirmbach.

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Migrating Monarchs Face Obstacles

  • Each year, monarch butterflies make a perilous migration from Mexico up to the Midwest. (Photo by Deb Walker)

Monarch butterflies are on their way north once again. The Great
Lakes Radio Consortium’s Chris Lehman has an update on the threats facing
the monarchs on their long journey from Mexico:

Transcript

Monarch butterflies are on their way north once again. The Great Lakes Radio Consortium’s Chris Lehman has an update on the threats facing the monarchs on their long journey from Mexico:


The annual migration from Mexico to the upper Midwest takes several months. The butterflies that ultimately arrive here are the second and third generation of those that spend the winter in Mexico.


Matt Douglas is a professor of zoology at Grand Rapids Community College in Michigan. He’s studied monarchs for more than 25 years and has visited their wintering grounds in Mexico several times. He says monarchs so far have been able to withstand threats from nearby logging operations there. But he says the butterflies are far from invincible.


“You never know what’s going to hit you or when. If you have multiple bad experiences with weather or with parasites and predators, you’re not going to have many monarchs.”


Douglas says if all goes well, people in the Midwest should begin to see monarch butterflies starting in late May.


For the GLRC, I’m Chris Lehman.

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Forecasting Monarch’s Future in Warmer World

Every winter, millions of monarch butterflies migrate from backyards in North America to nestle in trees in Mexico. The weather conditions in the mountains there are perfect for the insect. But scientists say climate change could spell disaster for the species. The Great Lakes Radio Consortium’s Todd Melby has this report:

Transcript

Every winter, millions of monarch butterflies migrate from backyards in
North America to nestle in trees in Mexico. The weather conditions in the
mountains there are perfect for the insect. But scientists say climate change could
spell disaster for the species. The Great Lakes Radio Consortium’s Todd Melby has
this report:


The fir trees in central Mexico are ideal conditions for the monarch
butterflies of North America to spend the winter. The habitat there is cool
and dry.


“They are looking for a refrigerator.”


That’s Karen Oberhauser, a researcher at the University of Minnesota. She
Says the orange-and-black-speckled butterflies spend up to five months there
Before coming north again.


The new study was published in the Proceedings of the National Academy of
Sciences. It shows that the biggest threat to the monarch’s Mexican habitat
may be an increase in rainfall. She says that would cause the monarchs to freeze
to death.


“It’s worrisome to me that, in a sense, we humans are kind of conducting this huge experiment and
we don’t know the outcome.”


The long-term climate change could force monarchs to flutter off in search
Of new places to winter. She says if they fail, the results could mean the end
of a species.


For the Great Lakes Radio Consortium, I’m Todd Melby.

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Spraying to Slow Gypsy Moths’ Momentum

Gypsy moths from Wisconsin and Michigan are invading Illinois at a greater rate than in past years. New areas of northern Illinois are to be treated to stop the moth from further damaging trees… but native butterflies will also be killed by the spray. The Great Lakes Radio Consortium’s Lester Graham reports:

Transcript

Gypsy moths from Wisconsin and Michigan are invading Illinois at a greater rate than past years. New areas of northern Illinois are to be treated to stop the moth from further damaging trees… but native butterflies will also be killed by the spray. The Great Lakes Radio Consortium’s Lester Graham reports:

Gypsy moths will eat the leaves of nearly any type of tree. This year, as they have for the past two decades, Illinois officials will be spraying a bacteria in selected parts of Chicago’s western suburbs. Any caterpillar that eats vegetation sprayed will be killed. Jim Cavanaugh is the Gypsy Moth Operations Coordinator for the state Department of Agriculture. He says the spraying won’t have any lasting damage on anything but the gypsy moth.

“The studies have shown that for naturally occurring or indigenous, if you will, butterflies and moths, that the following year their populations will make up the difference of any depression of the population in the spray year.”

Because of the timing and targeted spraying, the bacteria have a more lethal effect on the gypsy moth than other insects.

For the Great Lakes Radio Consortium, this is Lester Graham.

Hanging on to Karner Blues

  • Karner Blue butterflies depend on wild lupine for survival. Lupine is the only plant Karner Blue caterpillars will eat. Photo by Ann B. Swengel, courtesy of the U.S. Fish & Wildlife Service.

Once, a postage-stamp-sized butterfly known as the Karner Blue was found all across the Great Lakes states, from Minnesota to New York. Today its population has declined by 99 percent. The Karner Blue’s last stronghold is in Wisconsin, where an unprecedented state-wide effort is underway to save it. The Great Lakes Radio Consortium’s Mary Losure reports:

Tricking the Gypsy Moth

The U-S Forest Service and the Indiana Department of Natural Resources will
be using pheromone treatments to prevent gypsy moths from mating in wooded
areas along the Lake Michigan shoreline. The effort is aimed at protecting
the large concentration of endangered Karner Blue butterflies along the
shoreline. The Great Lakes Radio Consortium’s Len Clark reports:

B-T Corn Research Heads Into Field

In a recent issue of the journal, Nature, Cornell researchers released a
report claiming that pollen from a genetically engineered, or BT, corn
has a deadly effect on the monarch butterfly. But industry
representatives criticized the results, saying the lab-work didn’t
duplicate a real-life scenario. So now, Cornell scientists are heading
into the field for more research. The Great Lakes Radio Consortium’s
David Hammond has more:

Butterfly Exhibit Flies Into Region

Each spring, thousands of tropical butterflies make their way to the
Great Lakes region. But they don’t migrate here naturally — they’re
imported as part of the largest temporary tropical butterfly exhibit in
the country. The Great Lakes Radio Consortium’s Wendy Nelson Reports: