08/2/09

When Irish Toads Are Smiling

Recently I read on the Friends of the Irish Environment website about a small scale project that’s made a big difference for the endangered Natterjack toad, the only toad species native to Ireland. Only about 8,000 Natterjack toads remain in isolated pockets on Ireland’s Dingle peninsula.

One of the main problems for the Natterjack Toad is habitat loss. With a reduction in aquatic ecosystems—ponds, vernal pools, bogs—due to development,  populations of toads have become isolated from each other, and eventually their numbers will continue to dwindle.

To help the toads colonize new habitats, the Irish National Parks and Wildlife Service launched a project called Toad in the Hole. They pay farmers to dig and maintain ponds on their land. So far the program has been a success. The farmers are motivated, not just by the money—the ponds take quite a bit of work to maintain. Rather they are motivated because they want to help conserve the species.

As Michael Foley, a landowner from Rossbeigh, says, “I got involved purely to conserve the species. The people of Kerry are very proud of the toads. They are part of the country’s culture.” His pond is now teeming with toadlets and tadpoles.

This project makes so much sense to me, and yet it didn’t cost a huge amount of money. Each farmer is paid the US equivalent of about $1000 a year to maintain the pond. I think similar projects could be implemented in many areas where amphibians’ natural habitat has been destroyed.

Sometimes the problems facing amphibians seem insurmountable, but the solutions don’t necessarily have to be complicated.

A young, not fully grown Natterjack Toad. Photo by Piet Spaans.

A young, not fully grown, Natterjack Toad. Photo by Piet Spaans.

07/27/09

Good news for The Mountain Yellow-legged Frog

I’ve been reading some pretty gloomy stories lately about the worldwide amphibian decline, but I’ve also read a surprising number of hopeful stories as well.  Here’s one Susan passed along to me:

A population of a rare, almost extinct western frog, the Mountain Yellow-legged Frog (Rana mucosa) has been found in the San Jacinto Wildnerness in Southern California. Until last month researchers had estimated only 122 adult Mountain Yellow-legged Frogs remained in the wild. This species was once widespread, but declined over the years when non-native trout were added to recreational fishing waters, disturbing local ecosystems. Tadpoles often become prey to non-native fish such as trout. 

Biologists from the U.S. Geological Survey and the San Diego Natural History Museum made the discovery. Reading this article from the Environmental News Service, I realize how many zoos, state, local, and federal government agencies need to be involved and motivated to save an endangered species.  The San Diego Zoo, for example, has a program is to breed mountain yellow-legged frogs in captivity and return them to their native habitat. 

Kudos to all biologists, museums and zoos, and government agencies involved in this effort!

Courtesy of U.S. Geological Servey
Courtesy of U.S. Geological Survey
To learn more about this, I recommend watching the PBS Nature special The Thin Green Line. (You can watch it online.)  This absorbing documentary is about all aspects of the amphibian decline, but includes a segment on the Mountain Yellow-legged Frog in Yosemite.  Check out The Mountain Yellow-Legged Frog site as well.
07/9/09

Prince Charles and a GREEN FROG

As Prince Charles of England noted recently, “Frogs and princes have a long association.” He is hoping this strong frog-prince connection will help get the word out about his environmental charity, The Prince’s Rainforest Project.

The charity has a produced a video in which Prince Charles—as well as the Dalai Lama, Princes William and Harry, Robin Williams, Daniel Craig, Harrison Ford, Pele, and others—share the camera with a lifelike animated green frog. Even Kermit the Frog makes a cameo appearance!

Prince Charles says about his amphibian mascot: “Our frog is a symbol for the world’s rainforests, a symbol of action against climate change.”

Take a look!

07/7/09

Inmates Help Oregon Spotted Frogs

I was intrigued by this article in The Seattle Times yesterday about a program at the Cedar Creek Corrections Center (Washington state) where inmates are raising Oregon spotted frogs, an endangered species, in the prison. The inmates have stunned researchers because they have been more successful raising these frogs than the local zoos. They are taking care of the frogs under the auspices of the Washington State Department of Fish and Wildlife and nearby Evergreen State College (my nephew’s alma mater).

The inmates started with 80 Oregon spotted frog eggs in early April. As the eggs grew into tadpoles, then into frogs, they have been responsible for the frequent feedings and tank-water changes, and also for taking detailed notes for state researchers. One thousand frogs are estimated to be released into the wild this fall, which will help this struggling species.

Here’s more information about the Oregon Spotted frog from Herpetology Northwest. If you click on the photo below, you can hear the frog’s call.

Oregon Spotted Frog, copyright 1996, by William Leonard, AmphibiaWeb

Oregon Spotted Frog, copyright 1996, by William Leonard, AmphibiaWeb

07/6/09

Frogs—Nature's Bug Zappers

Fact: A single dwarf puddle frog can eat up to one hundred mosquitoes in a single night.*

In a recent article, “Croak, Croak …No More , ” The Times of India reported that in the coastal area of Karwar, India, where there used to be up to 30 species of frogs, now frogs are rarely seen. This concerns environmentalists and health department officials. Frogs eat mosquitoes—lots of mosquitoes, including those that carry diseases such as malaria, dengue fever, and chikungunya.

Frog catchers in Karwar capture and kill large numbers of frogs and supply them to hotels in Goa and Mumbai, where they end up on the menus as frogs legs. Indian zoologists are concerned about the possible extinction of the frog species in this area. Although it is illegal in India to capture and kill endangered frogs, the laws aren’t strictly enforced in Karwar. Health officials have seen a spurt in epidemics of both dengue fever and chikungunya.

We need to protect our little amphibian bug zappers…they help to keep us all healthy by munching on insect pests.

Bicolored frog, North Wayanad, Kerala. Photo,  L. Shyamal

Bicolored frog, North Wayanad, Kerala. Photo, L. Shyamal

*from Frogs: A Chorus of Colors by John L. Behler and Deborah A. Behler.

05/25/09

Be a FrogWatcher this summer!

This summer, consider becoming a FrogWatch USA volunteer, a Citizen Science Monitoring Program sponsored by the National Wildlife Federation. Participating in this program gives YOU the opportunity to help frogs and toads by collecting information essential for protecting them.

The FrogWatch site has a map of the US that lists local frog species. It also contains information about ordering CDs with frog calls from your region, lists of books to help you identify frog species, and all you need to know to become a successful Frog Watcher. If you’ve always wanted to do animal conservation fieldwork, here’s your chance to do it in your own neighborhood—maybe even your own backyard!

This summer I’ve been doing some informal Frog Watching with my family. We counted 17 small toads on one hike in the Norvin Green State Forest in New Jersey. We also went on a hike in Minnewaska State Park near New Paltz, New York, last weekend. At the nature center there, I picked up a pamphlet about frogs and toads of New York, where I learned that the hearty trilling I heard up in a pine tree wasn’t an invisible bird. It was a tiny Grey Tree Frog with a big voice! We also saw lots of tadpoles in a pond in various stages of metamorphosis.

Wherever you are this summer, keep an eye out for the amphibians!

Gray treefrog clinging to clover. Photographed by Lisa Miller at her home in northeastern Wisconsin. Courtesy of savethefrogs.com

Gray treefrog clinging to clover. Photographed by Lisa Miller at her home in northeastern Wisconsin. Courtesy of www.savethefrogs.com