27-year-old researcher working on nitrogen exchange between bacteria and the roots of legumes in the rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

natural reserve natural area tropical rainforest undergrowth scientific research scientist researcher woman person alone hand earth matter outdoor close up overview day botany march month la selva biological station sieve 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 women human beings persons human being human presence human presences human humans single lonely only solo one lone hands earthes matter outdoors outsides outside overviews global sight global sights full length days daytime botanies estación biológica la selva phytologist environment protection environment management biodiversity management environment naturalness area tropical forest forest science individual enumeration morphology zoology morphology organism matter substance shot ambiance discipline heredia province costa rica central america america tool material