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FROGS ARE GREEN!

For over 200 million years, ponds, marshes, grasslands, and rain forests have come alive with the calls of frogs. Yet these remarkable and colorful animals are declining at such a rapid rate that they are being called the Earth’s next dinosaurs. According to the IUCN Red List of Threatened Species, a third of the world’s amphibian species are threatened with extinction. To read more, click here!

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Archive for the ‘Learn about Frogs’ Category

One of the Smallest Frogs in the World Discovered

Tuesday, August 31st, 2010
A pea-sized frog species, Microhyla nepenthicola, was discovered this past week in Malaysian rainforests on the island of Borneo. This miniature frog, measuring between 10 to 12 millimeters (less than one-half inch), is the smallest frog species discovered so far in Asia, Africa, or Europe. The tiny frog is a type of frog called a microhylid, composed of mini-frogs under 15 millimeters. The discovery was made by Drs. Indraneil Das of the Institute of Biodiversity and Environmental Conservation and Dr. Alexander Haas of Biozentrum Grindel und Zoologisches Museum of Hamburg.

Photograph courtesy Indraneil Das, Institute of Biodiversity and Environmental Conservation

The tiny frogs were found near pitcher plants, which grow in damp, shady forests. The frogs deposit their eggs on the sides of the globular pitcher, and tadpoles grow in the liquid accumulated inside the plant.

What is the world’s smallest frog? Two 9.8-mm-long amphibians in the New World—the gold frog in Brazil (Brachycephalus didactylus) and the Monte Iberia dwarf frog(Eleutherodactylus iberia) in Cuba are believed to be the world’s smallest frog species. They are about the size of a house fly—very tiny frogs indeed.

For more information, see:Conservation International

Back to School at FROGS ARE GREEN!

Wednesday, August 18th, 2010

It’s back-to-school time and we’d like to introduce you to a few notable children’s books about frogs and other amphibians published recently:

THE FROG SCIENTIST by Pamela S. Turner, photographs by Andy Comins (Houghton Mifflin, 2009)

Dr. Tyrone Hayes, with his children, reads a book his mother gave him as a child, from THE FROG SCIENTIST. Photo copyright Andy Comins.

This book, part of the Scientist in the Field Series, is a biography of frog scientist Dr. Tyrone Hayes at UC-Berkeley, who has done groundbreaking studies about the effects of atrazine, a widely used herbicide, on frogs.  While the book is mainly a biography of Hayes, it is also a good overview of the global amphibian crisis and it includes an easy-to-understand explanation of the scientific method. The book has a lively, engaging design and many wonderful photos. It would be ideal for kids who are at that age (around 10 or so) when they decide that “science is boring.”

Dr. Hayes is an engaging subject for a biography, and the anecdotes about him are refreshing for this type of book (which can often be dry). A whole unit could be planned around THE FROG SCIENTIST, covering such topics as a science as a career, African Americans in science, the global amphibian decline, the scientific method, to name just a few.

A PLACE FOR FROGS by Melissa Stewart, illustrated by Higgins Ford (Peachtree 2009).

A PLACE FOR FROGS by Melissa Stewart, illustrated by Higgins Bond

For younger children (@5-8), this nonfiction picture book introduces different species of frogs and places them in their habitats. Each oversized double-page spread features a frogs species, their habitat, and shows some of the ways that human action and interaction can affect frog populations.

For example, one spread describes the Sierra Nevada Yellow-legged frog and its habitat, and explains why adding trout to the frogs ponds caused their decline (the trouts devoured the tadpoles). When people removed the trout, the frog populations began to recover. The frog and its habitat is depicted in gorgeous realistic paintings and is described in easy-to-understand language.

A Place for Frogs could be used for teaching kids about animal habitats (this author/artist team also did A Place for Butterflies and A Place for Birds). It could also be used in a unit about endangered animals, a unit devoted to frogs and amphibians, or it could be read as a springboard to study a local endangered frog in more detail, depending on where the school is located.

Big Night for Salamanders by Sarah Marwil Lamstein, art by Carol Benioff (Boyds Mill, 2010).

Illustration from BIG NIGHT FOR SALAMANDERS by Sarah Marwil Lamstein, art by Carol Benioff

In this narrative nonfiction picture book, a boy waits for the Big Night, the first rainy night in late winter or early spring when the blue-spotted salamanders begin their annual migrations. The salamanders must travel from their forest burrows to vernal pools, where they breed and lay eggs. The problem is the salamanders must cross a busy highway to reach the vernal pools. The boy, along with other volunteers, helps the salamanders cross the road. A parallel text in italics describes the migration of salamanders.

This is a lovely simple story about how one boy helps an endangered species close to home. It is illustrated in richly-colored gouache. At the back is information about the life cycle of blue-spotted salamanders, as well as information about the Big Night and vernal pools.

Big Night for Salamanders would be a good read-aloud book for younger children. It could also be used in units about the life cycles of animals, and about species whose habitats are threatened. Teachers could read this book in the spring and plan a field trip to a local vernal pool.

Don’t forget about the FROGS ARE GREEN ART CONTEST FOR KIDS! Please download and print out this flyer to tell kids about the contest.

Many thanks, and a red-eyed tree frog for you (rerun)

Friday, August 13th, 2010

Susan and I are hosting family and friends this week and so will be re-running a few posts from this past year. It’s been a HOT summer in the NYC area. We thought we’d re-post a holiday post to remind us of cooler days ahead. Also, if you’re a teacher this is a nice little poster to put up in your classroom in September. This post is originally from November 2009.

We have a lot to be grateful for at FROGS ARE GREEN. We’ve received over 10,000 visitors since we started the blog back in May. (Update: we are now up to 4500 visitors a month!). We are so grateful for your comments and for your participation in our blog.

As a token of our thanks, Susan designed a poster of our mascot, the Red-Eyed Tree Frog, that you can download and print out for FREE (in three different sizes). We hope you enjoy it and will put up a copy at your home, school, or office to spread the message about our amphibian friends.

Don’t forget to check our galleries of our photo contest photos, wonderful frog art from kids, and photos of wild backyards! (Click on the pictures in the right column of the blog. Feel free to send us your pictures to be included, too!)

Click here and it will take you to the download page.

red-eye-frog-poster-blog-sm

Update 8/10: We have two contests going on right now—a photo contest and a kids’ art contest. Summer is a good time to take pictures of frogs and to do some drawing, so please consider entering! See Contest link at top of page.

Cape Town’s secretive inhabitant and pilot conservation species – the Western Leopard Toad

Monday, June 28th, 2010

Written by Guest Blogger: Mark Day

Dusk ascends to cover the suburb of Bergvliet under a blanket of darkness. It brings with it the chill of a Wintery August night in Cape Town, South Africa, as a nippy breeze sweeps across the small urban wetland of Die Oog (an Afrikaans word meaning “The Eye”).

This man-made depression was originally dug out some 284 years ago to provide water for livestock on the neighbouring farm of Dreyersdal. In more recent years, however, Die Oog has come to serve a much greater purpose, as a pivotal breeding site for one of Cape Town’s most threatened amphibians, the western leopard toad Ameitophrynus pantherinus.

IUCN listed Amietophrynus pantherinus in Noordhoek - Photo by Maria Wagener of Fishhoek

As little as six years ago it was thought that only several such breeding sites remained in existence, for a species which has suffered massive population declines as a consequence of numerous threats including urban expansion, habitat destruction and population decimation through road kills. Today, conservationists and scientists with the aid of concerned volunteers and the public have listed a total of 52 breeding sites within the Cape Town range of the species. Further eastwards, some 150 kilometres away from southern Cape Town, a largely unprotected population comprising seven breeding sites exists.

Unlike most frogs which remain at water courses throughout the year, toads live in what’s termed ‘foraging areas’ where they lay dormant by day and hunt by night—with an exception for August month and there about when they migrate to and from local aquatic environments to breed. Presently, the majority of these foraging and breeding areas fall under urban suburbia, guaranteeing a window of constant interaction between these toads and the unknowing dangers their human neighbours pose.

Despite current conservation action and volunteer efforts to protect the Cape Town populations, census data from the 2009 breeding season only generated a recorded 1125 live migrants and 258 dead. Great strides have been achieved in recent years through a consistent increase in awareness of the plight of the species and in the recruitment of volunteers. The fate of the species is however uncertain—unless the citizens residing in these areas value their endemic and endangered leopard toad, there will merely remain stories of its once enigmatic nature and quiet existence.

For further details on the species, join the group on Facebook, The Endangered Western Leopard Toad or visit the website, www.leopardtoad.co.za.

Mark Day
Coordinator: Awareness, Volunteer & Census Operations
Western Leopard Toad Conservation Committee

Email: leopardtoad@gmail.com

Websites: www.leopardtoad.co.za /  www.toadnuts.co.za

Facebook: The Endangered Western Leopard Toad