Like the other OTS stations and many other field stations found in Costa Rica, Las Cruces has a black-light + white-sheet set-up to attract nocturnal insects for viewing. Here’s some quick shots I took last night.
The streams at Las Cruces are fairly impacted. There are a handful of smaller streams (1st-2nd order) that drain only secondary or primary forest, but most of the larger streams run through some abandoned pasture or have some sort of flow management impact like this one. My students are interested in water quality, so these impacts make for good gradients to survey.
One of my students, David, is planning to survey fish communities at Las Cruces. I may build a fish identification page here, but we’ll just start by posting some of what we catch here.
This is a long-whiskered catfish (Pimelodidae) called Rhamdia rogersi. I’ve seen this species in RBAMB and, I think, on La Peninsula Osa.