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Kerry M. Kriger, Ph.D.
Founder, Executive Director & Ecologist
An Introduction To
Amphibian Conservation
Pacific Chorus Frog
Pseudacris regilla
Cane Toad Bufo marinus
Oregon Spotted Frog
Rana pretiosa
Long-Toed Salamander
Ambystoma macrodactylum
California Newt
Taricha torosa
Purple Caecilian
Gymnopis multiplicata
Photo: Ian Van Lare
Rainforest Dragon
Hypsilures spinipes
Cool, but not
an amphibian!
Reptiles: Hard-Shelled Eggs
Foothill Yellow-Legged Frog
Rana boylii
Foothill Yellow-Legged Frog
Rana boylii
California Red-Legged Frog
Rana draytonii
Columbia Spotted Frog
Rana luteiventris
Yellowstone National Park
Metamorphosis
Metamorph
Hyperolius concolor
Lake Bosomtwe, Ghana
Kassina metamorph
Ankasa National Park, Ghana
Amplexus
Pristimantis palmeri
Dapa, Colombia
Amphibian Skin Is Permeable
Red-webbed Gladiator Frog
Hypsiboas rufitela
What Do Frogs Eat?
Oreophryne geislerorum
Papua New Guinea
How Many Amphibian Species Exist Worldwide?
8,689 as of Nov 2023
Purling Brook Falls
Queensland, Australia
Kriger Pond in VA
Built in 1981
Gray Treefrog
Hyla versicolor
Green Frog – Rana clamitans
Spring Peeper – Pseudacris crucifer
Purling Brook Falls
Queensland, Australia
Cascade Treefrog
Litoria pearsoniana
Emerald-spotted Treefrog
Litoria peronii
Southern Orange-eyed Treefrog
Litoria chloris
Scarlet-sided Pobblebonk
Limnodynastes terrareginae
Eastern Sedge Frog
Litoria fallax
Great Barred Frog
Mixophyes faciolatus
Photo: Jamie Bettaso
Striped Marsh Frog
Limnodynastes peronii
Marsupial Frog
Assa darlingtoni
2,000+ amphibian species
are threatened
with extinction
1,171 Data Deficient Species
mantis nyctophylax
Mindo, Ecuador
200 amphibian species extinct since 1979
Habitat Destruction
Protect Wilderness
Photo: Wes Savage
Santa Cruz Long-Toed Salamander
Ambystoma macrodactylum croceum
Only 23 populations left!
Inhospitable Terrain – Santa Cruz County
Sugarcane – Valle del Cauca, Colombia
Illegal Tea Plantation Inside
Khadimnagar National Park, Bangladesh
Protect Wilderness
Photo: Rainforest Action Network
Su
Gold Mining -- Ghana
Frogs are being taken out of
the wild for use as pets
Strawberry Poison Dart Frog
Dendrobates pumilio
Phyllobates terribilis
Parque Explora, Medellin, Colombia
Critically Endangered
Photo by A. Rosselli
Frog legs!
California Red-Legged Frog
Rana draytonii
Photo by Edgar Ortega
Invasive Species
Mountain Yellow-Legged Frogs:
threatened by non-native trout
Photo: Kris Ratzlaff
Invasive Species
Photo: Mike Murphy
Invasive Species
Pollution & Pesticides
Global Warming / Climate Change
Yellowstone National Park
Infectious Diseases
(chytrid fungus)
Frogs are important!
Frogs eat ticks, mosquitoes &
other disease vectors
Frogs are an integral part of the food web
Frogs are used
in medical
research
that benefits
humans
Frogs are bio-indicators
Frogs have been around 250 million years
Frogs are cool!
It’s up to you to
SAVE THE FROGS!
Don’t use pesticides
Eat locally grown,
organic food
Don’t eat frog legs
j
Slow down driving on wet nights
Never purchase a wild-caught amphibian!
Don’t stock non-native fish
in your pond or stream
Turn off the tap
Don’t purchase bottled water
Use rechargeable batteries…
…and dispose of them properly
Vote for the environment
Eat less meat
Pursue a career in environmental conservation
Spread the word about the
amphibian extinction crisis!
Amphibian Conservation Introduction

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Amphibian Conservation Introduction