منابع مشابه
HABITAT FRAGMENTATION AND METAPOPULATION DYNAMICS OF THE ANGOLA BLACK-AND-WHITE COLOBUS (Colobus angolensis palliatus) IN COASTAL KENYA by
This study investigates the effects of habitat fragmentation on an Angola black-andwhite colobus (Colobus angolensis palliatus) metapopulation in southern Kenya. 124 coastal forest fragments were surveyed in 2001. Fifty-five C. a. palliatus populations were found during this survey, (44% habitat patch occupancy), with an estimated national population estimate of 3,100 5,000 individuals. Colobus...
متن کاملPeters’ Anomaly
While conducting medical aid in Mozambique, a 41 year old African male presented to our eye clinic complaining of visual impairment. The male was found to have Peters' anomaly type 2, a rare congenital ocular malformation leading to sensory amblyopia and glaucoma.
متن کاملDoes the matrix matter? A forest primate in a complex agricultural landscape
Many threatened primates now exist in fragmented forest habitats. The survival of these populations may depend on their ability to utilise agricultural or other matrix habitats between forest fragments, but this is poorly known. Here, we systematically investigate an arboreal primate’s use of a heterogeneous matrix in a fragmented forest landscape: the Angola black-and-white colobus (Colobus an...
متن کاملThe alarm call system of two species of black-and-white colobus monkeys (Colobus polykomos and Colobus guereza).
Vervet monkey alarm calling has long been the paradigmatic example of how primates use vocalizations in response to predators. In vervets, there is a close and direct relationship between the production of distinct alarm vocalizations and the presence of distinct predator types. Recent fieldwork has however revealed the use of several additional alarm calling systems in primates. Here, the auth...
متن کاملJan Peters and Jens
Reinforcement Learning is an essential ability for robots to learn new motor skills. Nevertheless, few methods scale into the domain of anthropomorphic robotics. In order to improve in terms of efficiency, the problem is reduced onto reward-weighted imitation. By doing so, we are able to generate a framework for policy learning which both unifies previous reinforcement learning approaches and a...
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ژورنال
عنوان ژورنال: Annals and Magazine of Natural History
سال: 1869
ISSN: 0374-5481
DOI: 10.1080/00222936908695907