Translator Disclaimer
1 December 2012 Population Viability Analysis of a Long-Lived Freshwater Turtle, Hydromedusa maximiliani (Testudines: Chelidae)
Shirley Famelli, Sarah Cristina Piacentini Pinheiro, Franco Leandro Souza, Rafael Morais Chiaravalloti, Jaime Bertoluci
Author Affiliations +
Abstract

Maximilian's snake-necked turtle, Hydromedusa maximiliani, is an endemic and vulnerable long-lived freshwater turtle from eastern Atlantic mountainous rainforest regions of Brazil. Three scenarios (real population, optimistic population, and pessimistic population) based on the species' life-history data and carrying capacity estimates collected throughout 13 yrs were generated with VORTEX and subjected to sensitivity tests to verify the influence of demographic (mortality rate and inbreeding depression) and environmental (fire and deforestation catastrophes) parameters on population viability. The results showed significant differences among the viability scenarios, with extinction probability ranging from 6% to 99%. These analyses illustrate that environmental and demographic stochasticity can negatively impact populations of H. maximiliani and emphasize the necessity of protecting areas for long-lived organisms inhabiting regions impacted by humans.

Chelonian Research Foundation
Shirley Famelli, Sarah Cristina Piacentini Pinheiro, Franco Leandro Souza, Rafael Morais Chiaravalloti, and Jaime Bertoluci "Population Viability Analysis of a Long-Lived Freshwater Turtle, Hydromedusa maximiliani (Testudines: Chelidae)," Chelonian Conservation and Biology 11(2), 162-169, (1 December 2012). https://doi.org/10.2744/CCB-1001.1
Received: 2 March 2012; Accepted: 1 August 2012; Published: 1 December 2012
JOURNAL ARTICLE
8 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top