Relationships between Forest Fragments and Howler Monkeys (Alouatta palliata mexicana) in Southern Veracruz, Mexico

Rodríguez-Toledo, Erika M.; Mandujano, Salvador; García-Orduña, Francisco

doi:10.1007/978-1-4757-3770-7_7

Cited by 42 publications

(55 citation statements)

References 10 publications

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“…Varios autores confirman la capacidad de estas especies para sobrevivir en parches de bosque, lo que atribuyen a su gran flexibilidad y adaptabilidad de la dieta folívora de A. palliata y omnívora de C. capucinus, que los ayuda a explotar una gran cantidad de recursos que pueden estar disponibles dentro del parche (Milton 1993, Estrada & Coates-Estrada 1995, Estrada & Coates-Estrada 1996, Fedigan et al 1996, Crockett 1998, Sorensen & Fedigan 2000, Bicca-Marques 2003, Rodríguez-Toledo et al 2003.…”

Section: Discussionunclassified

“…Estudios de monos del nuevo mundo en fragmentos boscosos muestran que a medida que el tamaño de los parches de bosque disminuye, así lo hace el número de especies , el número de individuos (Chiarello & de Melo 2001), el número de alelos (Grativol et al 2001, Quan-Rodas 2002 y la diversidad genética (Quan-Rodas 2002, Gonçalves et al 2003) En el caso de A. palliata, Rodríguez-Toledo et al (2003) encontraron esta especie en sólo 11 de 59 fragmentos menores a 10ha mientras que en los cinco fragmentos de 10 a 70ha se observó en todos los casos. Estrada & Coates-Estrada (1995) hallaron que, además de la reducción de los fragmentos, el aumentar los años de aislamiento de los parches boscosos también disminuye el tamaño poblacional de A. palliata.…”

Section: Discussionunclassified

“…Sin embargo, al ser una especie de hábitos arbóreos, es muy probable que su respuesta sea similar a la reproducida por estos escenarios y a la exhibida por otros platirrinos (Chiarello 2000, Chiarello & de Melo 2001, Marsh 2002a, Norconk & Grafton 2003 En la mayoría de los estudios de primates en fragmentos, se ha observado que a medida que disminuye el tamaño del fragmento aumenta la densidad de monos (Pruetz & Leasor 2002, Gonçalves et al 2003, Rodríguez-Toledo et al 2003. Esto podría ser un indicio de que los fragmentos boscosos se saturan de ciertas especies con gran facilidad.…”

Section: Discussionunclassified

“…Una saturación de individuos, unido a cambios estocásticos ambientales durante un período largo de tiempo, podría reducir la cantidad y calidad de alimentos que puede brindar el fragmento, e incrementar la mortalidad (Estrada & Coates-Estrada 1995, Chapman & Balcomb 1998, Crockett 1998, Akçakaya et al 1999, Bicca-Marques 2003, Rodríguez-Toledo et al 2003, Rudran & Fernandez-Duque 2003. En el caso específico del RVSPN, algunos individuos de A. palliata capturados para otro estudio, tenían dientes en mal estado.…”

Section: Discussionunclassified

“…Aunque este estudio sugiere que ambas especies son capaces de sobrevivir en hábitats fragmentados, lo cual es confirmado por otros estudios (Chapman et al 1989, Estrada & Coates-Estrada 1995, Estrada & Coates-Estrada 1996, Crockett 1998, Sorensen & Fedigan 2000, Clarke et al 2002a, 2004b, Pruetz & Leasor 2002, Bicca-Marques 2003, Rodríguez-Toledo et al 2003, Fragaszy et al 2004, también resalta la fragilidad de las dos especies al disminuir el tamaño de la población, inestabilidad reflejada en bajos niveles de diversidad genética y una disminución notable en la probabilidad de persistencia al incluir factores que potencialmente pondrían en riesgo a las poblaciones.…”

Section: Discussionunclassified

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Viabilidad poblacional de Alouatta palliata (Primates: Atelidae) y Cebus capucinus (Primates: Cebidae) en el Refugio de Vida Silvestre Privado Nogal, Sarapiquí, Heredia, Costa Rica

Rodríguez-Matamoros

Villalobos-Brenes

Gutiérrez‐Espeleta

2012

RBT

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Population viability of Alouatta palliata (Primates: Atelidae) and Cebus capucinus (Primates: Cebidae) at Refugio de Vida Silvestre Privado Nogal, Sarapiquí, Heredia, Costa Rica. Habitat destruction may cause wildlife population fragmentation and is considered an important factor in small population species extinction. As wildlife populations become smaller, threats to their stability and persistence arise as a result of demographic, environmental and genetic stochastic factors. The aim of this work was to study the effects of population fragmentation on the long term viability of Alouatta palliata and Cebus capucinus populations, at Refugio de Vida Silvestre Privado Nogal, Sarapiquí (RVSPN), Heredia. For this we used the computer software VORTEX to run a population viability analysis (PVA) for both species. The input data of the PVA were taken from the demography structure of the RVSPN, literature sources from the species and from PVA related papers. We evaluated two sets of scenarios: small fragmented populations to reflect the population current state, and one larger and continuous population, to reflect the effect of reforestation actions followed by RVSPN to connect forest fragments. Results suggest that both A. palliata and C. capucinus can survive in isolated forest fragments. However, if different factors as inbreeding depression, catastrophes or habitat loss were incorporated to the scenarios, the small fragmented populations become unstable and the risk of extinction increased for both species. Continuous and larger populations were more robust against the threats incorporated in the scenarios when compared to the current situation of smaller and fragmented populations. The best management option for both species would be to continue reforestation efforts in the area to connect forest fragments, with the result of larger and continuous populations of both species. It is important to continue the observation of both species populations, and to promote a habitat management to reduce the negative effects of stochastic environmental events. Rev. Biol. Trop. 60 (2): 809-832. Epub 2012 June 01.

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Section: Discussionunclassified

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Viabilidad poblacional de Alouatta palliata (Primates: Atelidae) y Cebus capucinus (Primates: Cebidae) en el Refugio de Vida Silvestre Privado Nogal, Sarapiquí, Heredia, Costa Rica

Rodríguez-Matamoros

Villalobos-Brenes

Gutiérrez‐Espeleta

2012

RBT

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Biogeographical and floristic predictors of the presence and abundance of mantled howlers (Alouatta palliata mexicana) in rainforest fragments at Los Tuxtlas, Mexico

et al. 2005

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This research focuses on identifying the principal habitat characteristics that influence the presence and abundance of mantled howlers in forest fragments. We provide information on the demography of several fragmented Alouatta palliata mexicana subpopulations at Los Tuxtlas, Mexico, and relate this to the biogeographical and floristic characteristics of the forest fragments inhabited. The most important habitat characteristics related to the presence and abundance of howlers in the fragments were fragment size and floristic diversity. On the other hand, some evidence suggests that given the conditions under which howlers in our study area live (i.e., small and degraded fragments with high densities), secondary vegetation may be beneficial for the survival of the howlers. Finally, we discuss the possibility that the very low immature-to-female ratio (IFR) in the groups, and the lack of juveniles found in many of the study groups may be due to high mortality rates in immatures. A reduction in food availability because of the high population densities of these groups may be responsible for this process.

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Landscape attributes affecting patch occupancy by howler monkeys (Alouatta palliata mexicana) at Los Tuxtlas, Mexico

Arroyo‐Rodríguez

Mandujano

Benítez‐Malvido

2007

American J Primatol

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Understanding how forest cover is related to patch attributes such as size, shape, and isolation, and how this influences the occurrence of a species in fragmented landscapes is an important question in landscape ecology and conservation biology. To study the effects of fragmentation on patch occupancy by the critically endangered Mexican mantled howler monkey (Alouatta palliata mexicana) in the Los Tuxtlas region of Mexico, we selected three landscapes of ca. 5,000 ha, which differed in their remaining forest cover (24, 11, and 4%). For each landscape, we related patch occupancy to forest cover, patch size and shape, and four isolation parameters. Landscape attributes varied according to forest cover, and the percentage of occupation was greater in landscapes with more forest cover. The attributes affecting the probability of occupancy differed among landscapes. Occupancy was positively related to patch size in all landscapes, but in the northernmost landscape, shape irregularity had a negative effect on occupancy, whereas in the southernmost landscape, occupancy was favored by greater distances to the nearest village. The results show that not only the total amount of forest cover but also patch configuration need to be taken into consideration when designing management strategies for the conservation of the Mexican mantled howler monkey.

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Relationships between Forest Fragments and Howler Monkeys (Alouatta palliata mexicana) in Southern Veracruz, Mexico

Cited by 42 publications

References 10 publications

Viabilidad poblacional de <i>Alouatta palliata</i> (Primates: Atelidae) y <i>Cebus capucinus</i> (Primates: Cebidae) en el Refugio de Vida Silvestre Privado Nogal, Sarapiquí, Heredia, Costa Rica

Viabilidad poblacional de <i>Alouatta palliata</i> (Primates: Atelidae) y <i>Cebus capucinus</i> (Primates: Cebidae) en el Refugio de Vida Silvestre Privado Nogal, Sarapiquí, Heredia, Costa Rica

Biogeographical and floristic predictors of the presence and abundance of mantled howlers (Alouatta palliata mexicana) in rainforest fragments at Los Tuxtlas, Mexico

Landscape attributes affecting patch occupancy by howler monkeys (Alouatta palliata mexicana) at Los Tuxtlas, Mexico

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