From November 10 to 13, 2025, the workshop “Theory of Change for Human-Giant Otter Coexistence in the Pantanal” was held at the Sesc Porto Cercado Hotel, in Poconé (MT). The main goal of the meeting was to bring together different stakeholders and institutions that work directly or indirectly with giant otter conservation in the Pantanal, in a joint effort to reduce conflicts and promote coexistence between the species and local human communities.
The activity is part of the Action Plan for Giant Otter Conservation (PAN Ariranha – 3rd Cycle), and represented an important step in the collective development of strategies aimed at conserving the species.
Over four days of immersion, 22 participants from 21 institutions — including state and federal agencies, NGOs, universities, and private-sector organizations — gathered to exchange experiences, align perspectives, and identify shared paths to strengthen giant otter conservation efforts in the Pantanal biome.
During the workshop, the main interactions between humans and giant otters in the Pantanal were mapped, leading to discussions about challenges and opportunities to change or strengthen these interactions, with the goal of fostering more positive coexistence and advancing conservation efforts. The Theory of Change method allowed participants to collaboratively develop an interaction and causal diagram, as well as an action plan to be implemented jointly and synergistically by various actors.
Representing Projeto Ariranhas, the participants included our president and executive coordinator of the PAN Ariranha – 3rd Cycle, biologist Caroline Leuchtenberger, contributing her more than two decades of experience dedicated to research and conservation of the species; veterinarian Greice Gonchoroski, bringing insights on the importance of environmental health for the species and for local communities; and biologist Samara Almeida, sharing her knowledge about the species in the state of Tocantins.
The workshop was carried out in partnership with ICMBio/CENAP, Sesc Pantanal, PLAN4COEX, Instituto Homem Pantaneiro, and Panthera Brasil, representing an important step toward developing practices that ensure the species’ survival in the Pantanal and the balance of its ecosystem.











