Science and conservation of Amazonian crocodilians : a historical review

Marioni, B ORCID:, Barão‐Nóbrega, JAL ORCID:, Botero‐Arias, R ORCID:, Muniz, F ORCID:, Campos, Z ORCID:, Da Silveira, R, Magnusson, WE and Villamarín, F ORCID: 2021, 'Science and conservation of Amazonian crocodilians : a historical review' , Aquatic Conservation: Marine and Freshwater Ecosystems, 31 (5) , pp. 1056-1067.

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Access Information: This is the peer reviewed version of the following article: Marioni, B, Barão-Nóbrega, JAL, Botero-Arias, R, et al. Science and conservation of Amazonian crocodilians: a historical review. Aquatic Conserv: Mar Freshw Ecosyst. 2021; 31: 1056– 1067., which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.


Crocodilians represent one of the oldest extant vertebrate lineages. They have co‐existed with humans throughout the Amazon basin for thousands of years, often having a strong cultural and economic influence on people's lives. Shifts in the socio‐economic and political reality of the Amazon basin during the last century have led crocodilian populations to face large variations in their numbers according to different levels of exploitation and strategies for their conservation. This article reviews the scientific knowledge obtained between 1945 and 2019 on the biology, conservation and management for the four Amazonian crocodilian (caiman) species (Caiman crocodilus, Melanosuchus niger, Paleosuchus palpebrosus and Paleosuchus trigonatus). It provides a general overview on past and current population status and research efforts involving caimans in the Amazon basin and discusses perspectives for the future. The most significant studies on the ecology, genetics and management strategies are examined in more detail and this information is contextualized to provide an overview of the most relevant findings that might explain caiman population trends over the last 75 years. Systems for sustainable management in the Amazon basin have been discussed for the past 20 years, but remain rarely applicable. It is necessary to develop new ways to maintain healthy caiman populations through innovative management programmes. Sustainable harvesting of wildlife has been shown to promote conservation targets, especially those initiatives based on community co‐management. In this article, we propose some general guidelines for future management schemes, in the expectation that the information provided by the scientific community will be considered fully without political agendas determining the priorities.

Item Type: Article
Additional Information: ** Article version: VoR ** From Crossref journal articles via Jisc Publications Router **Journal IDs: pissn 1052-7613; eissn 1099-0755 **History: published 03-2021 **License for this article: starting on 01-03-2021, ,
Schools: Schools > School of Environment and Life Sciences
Journal or Publication Title: Aquatic Conservation: Marine and Freshwater Ecosystems
Publisher: Wiley
ISSN: 1052-7613
Related URLs:
Funders: National Council for Scientific and Technological Development (CNPq –Brazil), Program for Biodiversity Research (PPBio‐AmOc), National Institute for Amazonian Biodiversity (INCT‐CENBAM), Coordenação de Aperfeiçoamento de Pessoal de Nível Superior ‐ Brasil (CAPES)
SWORD Depositor: Publications Router
Depositing User: Publications Router
Date Deposited: 11 Mar 2021 12:36
Last Modified: 01 Mar 2022 02:30

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