Distribution, range extension, and conservation of the endemic Black-headed Bushmaster (Lachesis melanocephala) in Costa Rica and Panama

Distribution, range extension, and conservation of the endemic Black-headed Bushmaster (Lachesis melanocephala) in Costa Rica and Panama

The Black-headed Bushmaster, Lachesis melanocephala (Viperidae: Crotalinae), is an endemic pit viper from south-eastern Costa Rica. Despite its importance with regard to medicine and conservation, the ecology and distribution of this species are still poorly known, mainly because it was only recently recognized as a full species and records are scarce across its range. Known only from the Pacific...

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The Status of the World’s Land and Marine Mammals: Diversity, Threat, and Knowledge

The Status of the World’s Land and Marine Mammals: Diversity, Threat, and Knowledge

Knowledge of mammalian diversity is still surprisingly disparate, both regionally and taxonomically. Here, we present a comprehensive assessment of the conservation status and distribution of the world’s mammals. Data, compiled by 1700+ experts, cover all 5487 species, including marine mammals. Global macroecological patterns are very different for land and marine species but suggest common mechanisms driving diversity and endemism...

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