River dolphins are amongst the most enigmatic mammal species on Earth. Six species are recognized globally, two of which occur in South America: Inia geoffrensis and Sotalia fluviatilis. Both species, categorized as Endangered the IUCN, face significant conservation challenges. These remarkable mammals are especially vulnerable to anthropogenic impacts due to their restricted ranges in the freshwater ecosystem. The primary threats to river dolphins include fishery interactions such as bycatch and direct catch, habitat degradation (caused by riparian forest fires, deforestation, gold mining), pollution from agricultural and industrial runoff, and the escalating effects of climate change. The conservation of river dolphins is inextricably linked to the health of freshwater ecosystems and river conservation efforts. Over the past two decades, research has significantly enhanced our understanding of river dolphin biology, behaviour, and ecology. These efforts have allowed scientists to monitor populations, assess habitat quality, and better understand the threats they face. Emerging methods such as environmental DNA (eDNA) analysis, bioacoustics, stable isotope analysis, drone technology and satellite tracking have proven to be valuable tools in studying these charismatic animals. Likewise, conservation strategies for river dolphins are evolving to address the many challenges. Initiatives such as river dolphin-specific protected areas, the establishment of freshwater corridors, community-led conservation efforts, educational programs, and citizen science projects are gaining traction. Transboundary collaboration is critical, as the interconnected waterways span national borders, demanding international cooperation for effective conservation. This special issue of NHAC, supported by the South American Initiative for River Dolphins (SARDI), seeks to provide a comprehensive overview of our current knowledge on the two Neotropical river dolphin species and their subspecies. We encourage contributions that examine the magnitude and scale of threats faced by these dolphins, and explore innovative conservation strategies. By promoting awareness and action, we aim to secure a future for river dolphins and the ecosystems they live in, ensuring their continued presence as symbols of biodiversity and the vitality of freshwater ecosystems. We will receive four modalities for publication: Scientific Articles, Short Communications, Review Articles and Opinion Papers. Manuscripts must be submitted before July 15, 2025.
Se aceptan Artículos originales, notas científicas, revisiones y ensayos. La fecha limite para entrega de manuscritos es 15 de Julio 2025.
-
¿Can papers be submitted in the Spanish or portuguese language?
Yes, for this special issue papers written in the English, Spanish or Portuguese language can be submitted. Eventually, upon agreement with the authors, papers written in Spanish or Portuguese may be translated in English.
¿Can papers dealing with dolphins in estuaries or coastal areas be submitted to the journal?
Yes, they can be submitted to the Special Issue.
EDITORS

Mariana Paschoalini Frias
EDITOR
