Thanks for your comments!
Guillaume Gomard wrote:One question (maybe I'll have more in the following): Is Melanosuchus niger common in the place you investigated?
It seems to be common. We saw them on a regular basis. One night we had 11 adult black caimans right next to our camp at the same time. They stayed in the water in a distance of about 10 to 15 meters from the waterside. I think they were waiting for food, be it fish oddments or... human legs?
Jeroen Speybroeck wrote:I was wondering if it's common for frogs to breed in the dry season...
As far as I can judge this is not common in the Guianan rainforest. We only heard very few amphibian species calling during our trip (e.g.
Hypsiboas boans, Rhinella marina).
Hypsiboas boans was calling every night at a lot of places and I think that this species also breeds in small rock pools. Rock-pool breeders obviously have to wait until the water level goes down. Breeding in the dry season looks like an anti-cyclical behaviour of a minority of species to me.
- There were tadpoles in the majority of rock pools like this (don't know the species). Note that the water level is several meters higher in the rainy season.