Abstract
Ecological niche modeling is used to estimate species distributions based on occurrence records and environmental variables, but it seldom includes explicit biotic or historical factors that are important in determining the distribution of species. Expert knowledge can provide additional valuable information regarding ecological or historical attributes of species, but the influence of integrating this information in the modeling process has been poorly explored. Here, we integrated expert knowledge in different stages of the niche modeling process to improve the representation of the actual geographic distributions of Mexican primates (Ateles geoffroyi, Alouatta pigra, and A. palliata mexicana). We designed an elicitation process to acquire information from experts and such information was integrated by an iterative process that consisted of reviews of input data by experts, production of ecological niche models (ENMs), and evaluation of model outputs to provide feedback. We built ENMs using the maximum entropy algorithm along with a dataset of occurrence records gathered from a public source and records provided by the experts. Models without expert knowledge were also built for comparison, and both models, with and without expert knowledge, were evaluated using four validation metrics that provide a measure of accuracy for presence-absence predictions (specificity, sensitivity, kappa, true skill statistic). Integrating expert knowledge to build ENMs produced better results for potential distributions than models without expert knowledge, but a much greater improvement in the transition from potential to realized geographic distributions by reducing overprediction, resulting in better representations of the actual geographic distributions of species. Furthermore, with the combination of niche models and expert knowledge we were able to identify an area of sympatry between A. palliata mexicana and A. pigra. We argue that the inclusion of expert knowledge at different stages in the construction of niche models in an explicit and systematic fashion is a recommended practice as it produces overall positive results for representing realized species distributions.
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Acknowledgements
We are grateful to the 46 primatologists who participated in the elicitation process and shared their knowledge with us (Appendix 1). The elicitation workshop was funded by the Comisión Nacional para el Conocimiento y Uso de la Biodiversidad and the Comisión Nacional de Áreas Naturales Protegidas, México. Sergio Díaz-Martínez provided support for the edition of images and helpful comments on earlier versions of this paper. GRF thanks the Instituto Politécnico Nacional and CONACYT (grant 157656). GPM thanks the colleagues of COBIUS A.C., the regional citizens who participated in the monitoring sessions and the directors of the natural protected areas: Selva El Ocote, Sepultura, Encrucijada, Sian Kaan, Yum Balam, Balam Kaax, UayMil, Cañón de Sumidero, Laguna de Términos, and Pantanos de Centla, from CONANP, for their sponsorship by the PROMOBI y PROCER 2013-2016 programs. ECP thanks the Posgrado en Ciencias Biológicas (PCB) at the Universidad Nacional Autónoma de México for logistic and academic support. This paper is part of the requirements for the PhD in Sciences at the PCB-UNAM. ECP was supported by a graduate scholarship from the Consejo Nacional de Ciencia y Tecnología, Mexico.
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Appendices
Appendix 1. List of 19 bioclimatic variables used into the modeling
BIO1 = annual mean temperature |
BIO2 = mean diurnal range (mean of monthly (max temp–min temp)) |
BIO3 = isothermality (BIO2/BIO7) (*100) |
BIO4 = temperature seasonality (standard deviation *100) |
BIO5 = max temperature of warmest month |
BIO6 = min temperature of coldest month |
BIO7 = temperature annual range (BIO5–BIO6) |
BIO8 = mean temperature of wettest quarter |
BIO9 = mean temperature of driest quarter |
BIO10 = mean temperature of warmest quarter |
BIO11 = mean temperature of coldest quarter |
BIO12 = annual precipitation |
BIO13 = precipitation of wettest month |
BIO14 = precipitation of driest month |
BIO15 = precipitation seasonality (coefficient of variation) |
BIO16 = precipitation of wettest quarter |
BIO17 = precipitation of driest quarter |
BIO18 = precipitation of warmest quarter |
BIO19 = precipitation of coldest quarter |
Appendix 2. Maxent default parameters
Max number of background points | 10,000 |
Maximum iterations | 500 |
Convergence threshold | 0.00001 |
Convergence threshold | 0.00001 |
Default prevalence | 0.5 |
Appendix 3. List of experts who participated in the elicitation process
Name | Institution | Group of participation | Assistance to workshop | Participation in the electronic survey |
---|---|---|---|---|
Gabriel Ramos Fernández | President of the Mexican Association of Primatology | Core group | X | X |
Pedro Américo Duarte Dias | Instituto de Neuroetología, Universidad Veracruzana | Core group | X | X |
Mónica Améndola Pimenta | Mexican Association of Primatology | Core group | X | X |
Ariadna Rangel Negrín | Barcelona University | Core group | X | X |
Víctor Arroyo Rodríguez | Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México | Core group | X | |
Celene Espadas Manrique | Centro de Investigación Científica de Yucatán, A.C. | Consulting group | X | |
Francisca Vidal | Instituto de Ecología A.C | Consulting group | X | |
Juan Carlos Serio Silva | Instituto de Ecología A.C. | Consulting group | X | |
Jurgi Cristóbal | Centro de Investigaciones Tropicales, Universidad Veracruzana | Consulting group | X | |
Teresita de Jesús Ortiz Martínez | Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Oaxaca. | Consulting group | X | X |
Magali Bonilla | Instituto de Neuroetología, Universidad Veracruzana | Consulting group | X | X |
Miguel Angel Gómez Gómez | Reserva de la Biosfera “Pantanos de Centla.” Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Patricia Oropeza Hernández | Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Griselda Pérez Sarabia | Procuraduría Federal de Protección al Ambiente | Consulting group | X | |
Carlos Mario Burelos Jiménez | Chief of the Wildlife Department, Secretaría del Medio Ambiente y Recursos Naturales. | Consulting group | X | |
Gilberto Pozo Montuy | Instituto de Neuroetología, Universidad Veracruzana | Consulting group | X | X |
Fernando Winzig León | Secretaría del Medio Ambiente y Recursos Naturales. | Consulting group | X | |
Rosalía Pastor Nieto | Dirección General de Zoológicos de la Ciudad de México. | Consulting group | X | |
Víctor Manuel O. Torres | Wildlife Department, Secretaría del Medio Ambiente y Recursos Naturales. | Consulting group | X | |
Jose O. Molina | Centro de Estudios de Políticas Públicas y Desarrollo Sustentable, A.C. | Consulting group | X | |
Rogelio Manríquez Martínez | Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Irma de J. Serrano Sánchez | Parque Nacional Cañón del Sumidero, Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Luis Arturo Álvarez Márquez | Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Patricia G. Robles Zenteno | Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Eduardo Rendón Hernández | Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Guillermo Islas Dondé | Facultad de Ciencias, Universidad Nacional Autónoma de México | Consulting group | X | |
Juan Carlos Sánchez Olmos | Conservación Sin Fronteras | Consulting group | X | |
Fernando Miranda Martínez | Conservación Sin Fronteras | Consulting group | X | |
Cristina Domingo Balcells | Instituto de Biología, Universidad Nacional Autónoma de México | Consulting group | X | |
Arturo Ramírez Ortiz | Conservación Sin Fronteras | Consulting group | X | |
Sandra Flores Hernández | Área de Protección de Flora y Fauna “Otoch Ma’ax Yetel Kooh” | Consulting group | X | |
Juan Manuel Cornelio Pérez | Secretaría del Medio Ambiente y Recursos Naturales. | Consulting group | X | |
Rosa Olivia Rodríguez Reyes | Reserva de la Biosfera “Pantanos de Centla,” Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Katya Andrade Escobar | Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Carlos A. Guichard Romero | Reserva de la Biosfera “El Triunfo,” Comisión Nacional de Áreas Naturales Protegidas | Consulting group | X | |
Francisco García Orduña | Instituto de Neuroetología, Universidad Veracruzana | Consulting group | X | |
Alfredo Cuarón Orozco | Multicriteria S.C. | Consulting group | X | |
Eduardo García Frapolli | Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México | Consulting group | X | |
Ernesto Rodríguez Luna | Universidad Veracruzana | Consulting group | X | |
Armando Figueroa | Procuraduría Federal de Protección al Ambiente | Consulting group | X | |
Francisco García Contreras | Procuraduría Federal de Protección al Ambiente | Consulting group | X | |
Tamara Ortiz Ávila | Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México | Consulting group | X | |
Mateo Pérez Ortiz | Conservación Sin Fronteras | Consulting group | X | |
Diana Platas Neri | Instituto de Investigaciones Antropológicas, Universidad Nacional Autónoma de México | Consulting group | X | |
Jorge Luis Cruz Rueda de León | Unidad de Manejo de Fauna Silvestre “Nueva Era de la Chontalpa” | Consulting group | X | |
Bárbara Ayala Orozco | Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México | Consulting group | X |
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Calixto-Pérez, E., Alarcón-Guerrero, J., Ramos-Fernández, G. et al. Integrating expert knowledge and ecological niche models to estimate Mexican primates’ distribution. Primates 59, 451–467 (2018). https://doi.org/10.1007/s10329-018-0673-8
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DOI: https://doi.org/10.1007/s10329-018-0673-8