| black howler monkey (alouatta pigra) activity, foraging and seed dispersal patterns in shaded cocoa plantations versus rainforest in southern mexico. | recent evidence has shown that primates worldwide use agroecosystems as temporary or permanent habitats. detailed information on how these primates are using these systems is scant, and yet their role as seed dispersers is often implied. the main objective of this study was to compare the activity, foraging patterns and seed dispersal role of black howler monkeys (alouatta pigra) inhabiting shaded cocoa plantations and rainforest in southern chiapas, mexico. we gathered data on three monkey grou ... | 2014 | 24668557 |
| population of the black howler monkey (alouatta pigra) in a fragmented landscape in palenque, chiapas, mexico. | little is known about the population characteristics of alouatta pigra under conditions of forest fragmentation-information that is important to understanding its tolerance to habitat loss. in this work we present data on forest loss and on troop size, age, and sex composition for a population of black howler monkeys existing in the fragmented landscape surrounding the mayan site of palenque, chiapas, mexico. two aerial photos (1:70,000) of the study area (261 km(2)) taken in 1984 and 2001 were ... | 2002 | 12386913 |
| survey of the black howler monkey, alouatta pigra, population at the mayan site of palenque, chiapas, mexico. | a survey of the population of the black howler monkey (alouatta pigra) present at the mayan site of palenque was conducted during 2000. a total of 911 man/hours, spread over 112 days were spent surveying the 600 ha area of pristine forest at the site for howler troops. we detected the presence of 136 individuals of which 131 were members of 20 troops, the rest were 3 solitary adult males and 2 adult males travelling as a pair. ecological density was estimated at 23 individuals/km(2). mean troop ... | 2002 | 12091747 |