Seasonal assessment of threats against conservation of Inia geoffrensis humboldltiana (Cetartiodactyla Iniidae) middle river basin Meta, Colombia. THERYA. DOI: 10.12933/therya-15-248.

Project Details

Date : 2015
Volunteer Name : Federico Mosquera-Guerra, Carlos Parra, Fernando Trujillo, Alex Mauricio Jiménez-Ortega y Hugo Mantilla-Meluk

Project Description

Abstract: As a consequence of population isolation by the presence of geomorphological barriers, dolphins from northern South America are subdivided into three species: I. geofrensis (Amazon and Orinoco Rivers), I. boliviensis (Madeira River in Bolivia), and the recently described I. araguaiaensis inhabiting the hydrologic complex of the Araguaia –Tocantins Rivers in the northeastern Brazilian Amazon. The importance of pink dolphins at the ecosystems they inhabit is supported by: 1) its position as top predators in the food chain; 2) bioindicators for ecosystem health; 3) its cultural and mythological meaning for the local ethnic groups, such as Sikuanis from the Orinoco, and Ticuna for the Amazon; and 4) their economic value, mainly as a touristic attraction. The conservation status of Orinoquian populations of river dolphins (i. g. humboldtiana), has not been fully established. However, we know their populations are threatened by a series of human activities on both aquatic and terrestrial environments, afecting their occurrence across the basin. This research is part of an inter-institutional efort conducted between the Corporación para el Desarrollo Sostenible del Área de Manejo Especial de la Macarena (CORMACARENA) and Fundación Omacha, to monitor pink dolphin populations inhabiting the rivers: Meta, Manacacías, Yucao, and Cusiana, in order to identify conservation tensors afecting the species in the study area.