Researchers walking through the rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

natural reserve natural area tropical rainforest scientific research scientist researcher naturalist adult woman man person group walk follow outdoor profile shot overview day rucksack tree botany march month la selva biological station botanist nature reserves nature reserve nature natural areas ecosystem ecosystems tropical rain forests ombrophile forest shade plants rain forest rainforest rain forests ombrophile forests scientific researches scientific studies scientific study scientists researchers naturalists adults women men human beings persons human being human presence human presences human humans groups walking follow up follow ups followed outdoors outsides outside profile sights profile sight profile shots profile view profile views side view overviews global sight global sights full length days daytime rucksacks bagpack bagpacks trees botanies estación biológica la selva phytologist environment protection environment management biodiversity management environment naturalness area tropical forest forest science stage of development individual enumeration gait locomotion motion shot ambiance bag object material woody plant morphology botany morphology organism discipline heredia province costa rica central america america