Biodiversity and Conservation

, Volume 21, Issue 2, pp 451–473

Reduced current distribution of Psittacidae on the Mexican Pacific coast: potential impacts of habitat loss and capture for trade

Authors

    • Laboratorio de Ecología de Vertebrados Terrestres Prioritarios, Facultad de BiologíaUniversidad Michoacana de San Nicolás de Hidalgo, Edificio “R”, Ciudad Universitaria
    • Facultad de BiologíaEdificio “R” Planta Baja, Ciudad Universitaria
  • Tiberio C. Monterrubio-Rico
    • Laboratorio de Ecología de Vertebrados Terrestres Prioritarios, Facultad de BiologíaUniversidad Michoacana de San Nicolás de Hidalgo, Edificio “R”, Ciudad Universitaria
  • Katherine Renton
    • Estación de Biología Chamela, Instituto de BiologíaUniversidad Nacional Autónoma de México
  • Yamel Rubio-Rocha
    • Escuela de BiologíaUniversidad Autónoma de Sinaloa
  • Claudia Macías-Caballero
    • Pronatura Chiapas
  • Juan Manuel Ortega-Rodríguez
    • Laboratorio de Percepción Remota y Sistemas de Información Geográfica, Facultad de BiologíaUniversidad Michoacana de San Nicolás de Hidalgo, Edificio “R”, Ciudad Universitaria
  • Ramón Cancino-Murillo
    • Laboratorio de Ecología de Vertebrados Terrestres Prioritarios, Facultad de BiologíaUniversidad Michoacana de San Nicolás de Hidalgo, Edificio “R”, Ciudad Universitaria
Original Paper

DOI: 10.1007/s10531-011-0193-y

Cite this article as:
Marín-Togo, M.C., Monterrubio-Rico, T.C., Renton, K. et al. Biodivers Conserv (2012) 21: 451. doi:10.1007/s10531-011-0193-y

Abstract

Ecological niche models provide useful predictions of species distributions, but may fail to detect reductions in distribution due to factors other than habitat loss, such as hunting or trade. From 2001 to 2009, we conducted field-surveys along the Mexican Pacific coast to obtain presence–absence data for nine Psittacidae species. We applied Genetic Algorithm for Rule set Prediction (GARP) ecological niche modeling, using field-survey presence data to determine the potential current distribution of each species, and incorporated absence data to delineate extirpation areas. All parrot species showed a reduced current distribution, ranging from 9.6 to 79% reduction of estimated original distribution. The threatened and endemic species of Amazonaoratrix, Amazonafinschi, and Forpuscyanopygius suffered the greatest distribution reduction, higher than previously estimated by habitat-based models, suggesting that capture for trade may have caused extirpation of these species. The greatest extent of current distribution was occupied by Aratingacanicularis, Amazonaalbifrons and Aramilitaris, which continue to occur throughout most of their original distribution. Amazonaauropalliata, Aratingastrenua, and Brotogerisjugularis also occur throughout their restricted distribution in coastal Chiapas, and show a relatively small distribution reduction, but had the highest proportion of modified lands within their current distributions. Our results highlighted the regions of coastal Guerrero, northern Nayarit, and southern Sinaloa where parrot species have been extirpated even though GARP models predicted suitable habitat available. Ideally distribution models should be verified in the field to determine conservation priorities, and efforts should be directed to maintain populations of species with greatest distribution reductions.

Keywords

Field surveysDistribution reductionEcological niche modelsHabitat availabilityParrotsPresence–absence recordsProtected areasSpecies extirpation

Copyright information

© Springer Science+Business Media B.V. 2011