Amphibian Declines in Costa Rica

This topic submitted by Natalie Fath ( fathna@miamioh.edu) at 11:19 AM on 3/30/06.

This bat was impaled on thorns. How did this happen? Poor Navigation? Where was Air Traffic Control? Guanacaste Province, Costa Rica.

Tropical Field Courses -Western Program-Miami University



Natalie Fath
Geology 512
Costa Rica Outline
2006

I. Introduction
A. trends in population declines over time
B. some stats about declines (Stuart et. al 2004)
C. introduce examples: Bufo periglenes (Golden Toad), Atelopus sp. (Harlequin frogs), and Dendrobates (Poison Dart Frog sp.)
D. introduce reason for species declines: enigmatic declines,
Batrachochytrium dendrobatidis (Chytrid fungus), habitat loss, and global climate change
E. What, if anything is being done?

II. Amphibian Importance in Costa Rica
A. Diversity (Nature Conservancy: Costa Rica covers only 0.01 percent of the Earth’s landmass, but is believed to host approximately 5% of its biodiversity)
1. amphibian species diversity
2. habitat diversity
B. Role as “Bioindicators”

III. Species being Affected (background info, habitat, status, reason for decline)
A. Golden Road:
B. Harlequin frogs
C. Poison Dart frogs

IV. Causes of Amphibian Declines
A. enigmatic declines
B. Chytrid fungus
C. habitat loss
D. global climate change

V. Conservation/Protection Efforts: What is being done?
A. Costa Rica
B. Internationally

VI. Conclusion: The Future of Amphibians
A. Resources/Quotes
B. Amphibian decline predictions
1. rates of decline
2. predicted species loss


(Optional Paragraph)
VII. Take Action: What can YOU do?
A. Resources, recommendations
B. organizations to contact


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