calendar         contact         donate    


ecuador study sites



Sign up below for Reptile and Amphibian Ecology Online, our periodic e-newsletter. It's an easy way to keep in touch and find out about the goings on in the lives of frogs, lizards, snakes and their kin.


Join a Photographic
Expedition to the
Amazon Rainforest

amazon photo workshop

Help Save Animals and Ecosystems: Donate Now!

purchase photos

Purchase Photographic Prints and Support Our Work
photo prints

Our Study Sites

Our Ecuadorian study sites span a range of climates and elevations on both sides of the Andes Mountains.

Study Site Photo Galleries >>

Our newest study site, Rio Bigal Biological Reserve in the upper slopes of the Amazon Rainforest is home to unque fauna and flora. In our first expedition there this last August, we documented the presence of nearly 60 species of reptiles and amphibians, including several candidates for species that are new to science! Make sure to watch our video from this site.

wundgase by Onfy

rio bigal

Our southernmost sites are near the coastal town of Jama. This area contains some intriguing habitats, incuding rare dry forest, of which over 95% has been cut down for cattle grazing. and we have found at least one suspected new species there: a slug-sucking snake.

jama ecuador map

Lalo Loor and Jama-Coaque reserves,, located on the coast and sitting just south of the equator, include tropical dry forest, tropical humid forest, and even cloudforest. The reserves are a patchwork of all three habitat types as well as disturbances caused by roads, banana and lime fields, and cattle grazing. Thus, the opportunity is afforded to examine the multiple influences of habitat and disturbance on animal distribution and abundance. Also, much of the habitat in and around the reserves is composed of former pastureland which has been allowed to revert to forest, with the assistance of revegetation efforts. This scenario also allows the chance to examine ecological succession on reptiles and amphibians, and to determine whether the forests are able to return to previous levels and types of biodiversity after ecological disturbances.

lalo loor map

Our second site, Serra Pata de Pajaro, represents a large remnant of tropical humid forest/cloud forest transition. We hike into this site, with the help of pack mules--a grueling two hour hike through mud up slippery slopes. As we climb from lower elevation humid forest to higher elevation cloud forest, there are drastic changes in flora and fauna, with more frogs, ferns and bromeliads. Because the cloud forest on the upper reaches of the mountains has been isolated from other such forests for thousands of years, it is likely that there are unique species found there. In fact, our latest foray to the top of the mountain yielded more than 20 species of frog that are likely new to science.

pata de pajaro

La Perla represents a remnant of tropical humid forest (a type of rainforest) that once stretched for a hundred miles or more. The forest contains both primary (old-growth) and secondary (successional) forest. Although these are rare and disappearing habitats, there is some excellent forest remaining, and we have found a great diversity of species. Indeed, one recent foray deep into the forest yielded seven species that were new to us, including the Chachi Frog (Hypsiboas picturata) and the Western Basilisk (Basiliscus galeritus). At La Perla, conduct variable and fixed-length transects on forest edges as well as deep in the forest, sometimes by wading hip-deep in creeks for hours at a time.

bosque protector la perla

Congal Reserve contains some of the last remaining mangrove forests on the coast of Ecuador, but we work mostly in the humid forest inland. In our latest expedition there, we found a bushmaster: an enormous venomous viper. Virtually nothing is known about the reptiles and amphibians there, and discoveries await!

congal ecuador

<< Previous 1  2  3  4  5


For its size, Ecuador is the most biodiverse country on earth. It holds about 8% of all the species of amphibians on Earth and 16% of bird species--all in a country about the size of Arizona!

Many tropical ecosystems are under dire peril--our study regions in western Ecuador are over 95% deforested!

You can help with this important work -- donate today.

Find out how you can participate in our research expeditions to the rainforests of Ecuador.

See photo galleries from our Ecuadorian research expeditions:

January 2008
Summer 2008

January 2007
May 2007
August 2007

Reptile and Amphibian Ecology International is a US 501(c)(3) nonprofit charity organization and all donations are 100% tax-deductible.
All photos and content © Reptile and Amphibian Ecology International and/or Paul S. Hamilton (unless noted) | Contact | Webmaster