The rainy season part 2: Other frog species in Costa Rica
Did you know… in the wet months the frogs in Costa Rica show themselves more often? They are less prone to drying out because of the wetness and are singing because many species lay their eggs in the rainy season. Earlier we talked about the glass frogs, but there are many more frogs to be seen in this period.
Tree frogs often lay their eggs in or above (temporary) pools of rainwater. The advantage is that these pools are usually free of fish, so there is less chance that the eggs or tadpoles are eaten. During wet nights the males gather around the pools to sing and attract females.
Species from the great genus Craugastor have an even more ingenious way of reproduction to prevent predation (eating their eggs). Most species lay their eggs in small puddles that form on dead leaves or dimples in the ground, without aquatic predators (predators in the water). From the eggs miniature frogs are formed, they skip the whole tadpole step. This is how these frogs deal with the high predation pressure in the rainforest. But it also brings risks: when the little water dries up before the frogs develop, they dry out.
Below an overview of some of the species we regularly see during the night tour in the Work with Nature reserve.
Red-eyed Leaf Frog
Tawny Tree Frog
Pygmy Rain Frog
Masked Litter Frog
Drab Tree Frog
Common Rain Frog
Boulenger’s Long-snouted Tree Frog
Did you already read our article about glass frogs? Click here
Is it possible to restore the original rainforest in a deforested area where cows have been grazing for years? In Costa Rica at least they accept the challenge. This article tells in short how a Dutch foundation in Costa Rica is trying to transform degraded land back into a fully fledged rainforest. (more…)
Most species are between 7.5 and 13 cm in size. You would almost think it is an out-sized bumblebee! Hummingbirds (Trochilidae) are the smallest birds in the world. They are a family of birds of the order swift-like. The family includes more than 300 species. Most species are found in South America. It is so much fun (more…)
When a butterfly flies by, most people do stop for a moment to follow it with their eyes. They often have beautiful colors and the large soft wings compared to the small body make them look almost cuddly. In Costa Rica there are more than 1200 species of butterflies and of course we are very curious about the species that occur in the reservation of Adopt Rainforest.
Critically endangered parrot species Yesterday the research program of Adopt Rainforest participated in the Censo Internacional de la Guacamaya Verde 2022. Or in English the International Sensus of the Great Green Macaw. Throughout its distribution, dozens of organisations participate in the next days to get an understanding of the current state of this parrot species. […]
In recent years, the reserve of the Adopt Rainforest Foundation has been easy for project manager Maarten to oversee. Two or three times a week he and the students make his rounds through the project area for the biodiversity research. For this research they visit several plots of the area, giving them a good insight into what is happening. Should any illegal logging occur, it is immediately noticed. The same goes for illegal hunting. In addition to the local presence, camera traps are hung at various places in the reserve. These are checked weekly. Should hunters or poachers walk through our reserve, this is quickly noticed.
Now that student Sonny, a pure night tour specialist, is about to finish his internship, a lot of great discoveries are made at the last minute. To top it all off, last week we found a special glass frog in the reserve. This Hyalinobatrachium dianae – Diane’s Bare-hearted Glass Frog was only discovered and described […]
Last summer we were able to open the proverbial champagne bottle again! Despite all external influences, we managed to formalize the purchase of a beautiful and especially strategically important piece of rainforest! It concerns the 9 hectares on which the research center is located. (more…)
Costa Rica is known for its beautiful nature, a country with an exceptionally high diversity of plants and animals (one of the highest percentages of biodiversity in the world). A country for the true ecotourist. Over the past twenty years, ecotourism has become increasingly important to Costa Rica. In 2019, there were nearly 3 million tourists in Costa Rica of which 80% are considered ecotourists. (more…)
In the Caribbean lowlands of Costa Rica most rain falls in May to August. The fact that it rains is good for all life of course, but can be quite difficult for our biologists in the Work with Nature reserve; the paths become muddy, the laundry doesn’t dry and the project is sometimes briefly inaccessible because rivers are filling up. (more…)
From 25 hectares of grassland to a thriving rainforest
This month chairman Martin and founder Matthijs were at Trees for All’s headquarters to ratify a new cooperation for reforestation of 25 hectares of grassland. One of the largest projects in Costa Rica for the Adopt Rainforest Foundation to date. A total of more than 27,500 trees will be planted. (more…)
Together with Barbilla National Park and the Bajo Chirripó Indigenous Reserve, the Work with Nature reserve forms a “three-country point”. This place is known as Punta de Lanza or Lanspunt. The community consists partly of the indigenous population of Costa Rica and partly of “white people” (modern ticos). Recently, an association has been founded to achieve more together.
Did you know that 5% of all species of flora and fauna in the world live and grow in Costa Rica? Also, Costa Rica is in the global top 20 countries with the greatest biodiversity! Are you a real nature lover? Then put Costa Rica on your bucket list. But… before you pull your backpack and passport out of the closet, we want to give you a lesson about biodiversity. Maybe you have what it is, but to refresh your memory we’ll explain it to you in this blog. (more…)
What’s with the fur? Why do sloths sleep so much? This month, the three-fingered sloth is the animal of the month at Adopt Rainforest. And what’s more fun than hearing from one of the founders of Adopt Rainforest some fun facts that you won’t find in a standard biology book. Maarten van der Beek is one of the biologists at Adopt Rainforest and lives on the Work With Nature reserve in Costa Rica. (more…)
Do you want to offset your CO2? But have no idea how CO2 offsetting works? In this article we will tell you all the ins and outs about CO2 compensation so that you can reduce your CO2 emissions and offset them in the right way.
Stichting Adopteer Regenwoud’s research project is entering an exciting new phase thanks to a long-term collaboration with Utrecht University. The foundation was ready for a new step to professionalize the research project and Utrecht University was looking for a stable and reliable partner in Central America to conduct solid research in the rainforest. So for both parties this is a wonderful collaboration! Because of this we will make a big step in professionalizing our current research on biodiversity in our reserve. Together with the visiting students we will focus on scientific research in which the diversity and development of nature in our reserve, with an emphasis on flora, is central.
Despite the fact that there are no students because of the Corona crisis, the research continues (partly).
In the Netherlands, some students are busy analysing data, but also in Costa Rica inventories are still being made. Accompanied by guide Tapa, Hanneke and Maarten walk the transects in different habitats.