Macroinvertebrados dulceacuícolas de la Isla del Coco, Costa Rica: especies y comparación con otras islas del Pacífico Tropical Oriental

A study of freshwater macroinvertebrates on Cocos Island, Costa Ricarevealed that mountainous islands in the Eastern Tropical Pacific support richer aquatic faunas due to higher cloud interception feeding freshwater environments. Researchers collected 455 individuals from 20 taxa across three rivers and two creeks, with Staphylinidae (Coleoptera) being the most abundant group. The analysis supported the Theory of Island Biogeography, showing that elevation-corrected island area better predicts taxonomic richness than distance alone. Physicochemical variables were consistent across sites, likely due to the island's geology and lack of pollution. This suggests that topographical features play a crucial role in shaping biodiversity on tropical oceanic islands.

Gutiérrez Fonseca, P. E., Ramírez, A., Umaña, G., & Springer, M. (2013). Macroinvertebrados dulceacuícolas de la Isla del Coco, Costa Rica: especies y comparación con otras islas del Pacífico Tropical Oriental. Revista de Biología Tropical, 61(2). https://doi.org/10.15517/rbt.v61i2.11166