... Nouv. Sér 132:43–52. Lescure, J. and C. Marty. 2001 [2000&rsqb. Atlas des amphibi... more ... Nouv. Sér 132:43–52. Lescure, J. and C. Marty. 2001 [2000&rsqb. Atlas des amphibiens de Guyana. ... CrossRef. Magurran, AE 1988. Ecological diversity and its measurement. Princeton University Press, Princeton, NJ. McDiarmid, RW and MA Donnelly. 2005. ...
Mesoamerica provides a unique context for biodiversity conservation in managed landscapes because... more Mesoamerica provides a unique context for biodiversity conservation in managed landscapes because of its geography, history of human intervention, and present conservation and development initiatives. The long and narrow form of the Mesoamerican landmass, and its division by a central mountain range, has served as both a bridge and a barrier. Conservation efforts in Mesoamerica are unique for the emphasis they place on regional connectivity through the Mesoamerican Biological Corridor and on biodiversity ...
The conservation status of the members of the Honduran herpetofauna is discussed. Based on curren... more The conservation status of the members of the Honduran herpetofauna is discussed. Based on current and projected future human population growth, it is posited that the entire herpetofauna is endangered. The known herpetofauna of Honduras currently consists of 334 species, including 117 amphibians and 217 reptiles (including six marine reptiles, which are not discussed in this paper). The greatest number of species occur at low and moderate elevations in lowland and/or mesic forest formations, in the Northern and Southern Cordilleras of the Serranía, and the ecophysiographic areas of the Caribbean coastal plain and foothills. Slightly more than one-third of the herpetofauna consists of endemic species or those otherwise restricted to Nuclear Middle America. Honduras is an area severely affected by amphibian population decline, with close to one-half of the amphibian fauna threatened, endangered, or extinct. The principal threats to the survival of members of the herpetofauna are uncontrolled human population growth and its corollaries, habitat alteration and destruction, pollution, pest and predator control, overhunting, and overexploitation. No Honduran amphibians or reptiles are entirely free of human impact. A gauge is used to estimate environmental vulnerability of amphibian species, using measures of extent of geographic range, extent of ecological distribution, and degree of specialization of reproductive mode. A similar gauge is developed for reptiles, using the first two measures for amphibian vulnerability, and a third scale for the degree of human persecution. Based on these gauges, amphibians and reptiles show an actual range of Environmental Vulnerability Scores (EVS) almost as broad as the theoretical range. Based on the actual EVS, both amphibian and reptilian species are divided into three categories of low, medium, and high vulnerability. There are 24 low vulnerability amphibians and 47 reptiles, 43 medium vulnerability amphibians and 111 reptiles, and 50 high vulnerability amphibians and 53 reptiles. Theoretical EVS values are assessed against available information on current population status of endemic and Nuclear Middle American taxa. Almost half (48.8%) of the endemic species of Honduran amphibians are already extinct or have populations that are in decline. Populations of 40.0% of the Nuclear Middle American amphibian species are extirpated or in decline. A little less than a third (27.0%) of the endemic reptiles are thought to have declining populations. Almost six of every ten (54.5%) of the Nuclear Middle American reptilian species are thought to have declining populations. EVS values provide a useful indicator of potential for endangerment, illustrating that the species whose populations are currently in decline or are extinct or extirpated have relatively high EVS. All high EVS species need to be monitored closely for changes in population status. A set of recommendations are offered, assuming that biotic reserves in Honduras can be safeguarded, that it is hoped will lead to a system of robust, healthy, and economically self-sustaining protected areas for the country's herpetofauna. These recommendations will have to be enacted swiftly, however, due to unremitting pressure from human population growth and the resulting deforestation.
... Page 147. DANIEL H. JANZEN/131 harsh that many species of trees, vines, and herbs are deciduo... more ... Page 147. DANIEL H. JANZEN/131 harsh that many species of trees, vines, and herbs are deciduous for 2 to 6 months. Its rainy season, during which 1 to 3 meters of rain can fall, is as wet, if not wetter, than that of a rain forest. ...
"Co-authored chapters: Johnson, Jerry D., Larry ... more "Co-authored chapters: Johnson, Jerry D., Larry David Wilson, and Josiah H. Townsend. Summary of recent changes in higher taxonomic categories of Mesoamerican amphibians and reptiles. Pp. 18–27. Townsend, Josiah H., and Larry David Wilson. Conservation of the Honduran herpetofauna: Issues and imperatives. Pp. 460–487. Townsend, Josiah H., and Larry David Wilson. Biogeography and conservation of the Honduran subhumid forest herpetofauna. Pp. 686–705. Wilson, Larry David, and Josiah H. Townsend. The Herpetofauna of Mesoamerica: Biodiversity significance, conservation status, and future challenges. Pp. 760–812. "
... Nouv. Sér 132:43–52. Lescure, J. and C. Marty. 2001 [2000&rsqb. Atlas des amphibi... more ... Nouv. Sér 132:43–52. Lescure, J. and C. Marty. 2001 [2000&rsqb. Atlas des amphibiens de Guyana. ... CrossRef. Magurran, AE 1988. Ecological diversity and its measurement. Princeton University Press, Princeton, NJ. McDiarmid, RW and MA Donnelly. 2005. ...
Mesoamerica provides a unique context for biodiversity conservation in managed landscapes because... more Mesoamerica provides a unique context for biodiversity conservation in managed landscapes because of its geography, history of human intervention, and present conservation and development initiatives. The long and narrow form of the Mesoamerican landmass, and its division by a central mountain range, has served as both a bridge and a barrier. Conservation efforts in Mesoamerica are unique for the emphasis they place on regional connectivity through the Mesoamerican Biological Corridor and on biodiversity ...
The conservation status of the members of the Honduran herpetofauna is discussed. Based on curren... more The conservation status of the members of the Honduran herpetofauna is discussed. Based on current and projected future human population growth, it is posited that the entire herpetofauna is endangered. The known herpetofauna of Honduras currently consists of 334 species, including 117 amphibians and 217 reptiles (including six marine reptiles, which are not discussed in this paper). The greatest number of species occur at low and moderate elevations in lowland and/or mesic forest formations, in the Northern and Southern Cordilleras of the Serranía, and the ecophysiographic areas of the Caribbean coastal plain and foothills. Slightly more than one-third of the herpetofauna consists of endemic species or those otherwise restricted to Nuclear Middle America. Honduras is an area severely affected by amphibian population decline, with close to one-half of the amphibian fauna threatened, endangered, or extinct. The principal threats to the survival of members of the herpetofauna are uncontrolled human population growth and its corollaries, habitat alteration and destruction, pollution, pest and predator control, overhunting, and overexploitation. No Honduran amphibians or reptiles are entirely free of human impact. A gauge is used to estimate environmental vulnerability of amphibian species, using measures of extent of geographic range, extent of ecological distribution, and degree of specialization of reproductive mode. A similar gauge is developed for reptiles, using the first two measures for amphibian vulnerability, and a third scale for the degree of human persecution. Based on these gauges, amphibians and reptiles show an actual range of Environmental Vulnerability Scores (EVS) almost as broad as the theoretical range. Based on the actual EVS, both amphibian and reptilian species are divided into three categories of low, medium, and high vulnerability. There are 24 low vulnerability amphibians and 47 reptiles, 43 medium vulnerability amphibians and 111 reptiles, and 50 high vulnerability amphibians and 53 reptiles. Theoretical EVS values are assessed against available information on current population status of endemic and Nuclear Middle American taxa. Almost half (48.8%) of the endemic species of Honduran amphibians are already extinct or have populations that are in decline. Populations of 40.0% of the Nuclear Middle American amphibian species are extirpated or in decline. A little less than a third (27.0%) of the endemic reptiles are thought to have declining populations. Almost six of every ten (54.5%) of the Nuclear Middle American reptilian species are thought to have declining populations. EVS values provide a useful indicator of potential for endangerment, illustrating that the species whose populations are currently in decline or are extinct or extirpated have relatively high EVS. All high EVS species need to be monitored closely for changes in population status. A set of recommendations are offered, assuming that biotic reserves in Honduras can be safeguarded, that it is hoped will lead to a system of robust, healthy, and economically self-sustaining protected areas for the country's herpetofauna. These recommendations will have to be enacted swiftly, however, due to unremitting pressure from human population growth and the resulting deforestation.
... Page 147. DANIEL H. JANZEN/131 harsh that many species of trees, vines, and herbs are deciduo... more ... Page 147. DANIEL H. JANZEN/131 harsh that many species of trees, vines, and herbs are deciduous for 2 to 6 months. Its rainy season, during which 1 to 3 meters of rain can fall, is as wet, if not wetter, than that of a rain forest. ...
"Co-authored chapters: Johnson, Jerry D., Larry ... more "Co-authored chapters: Johnson, Jerry D., Larry David Wilson, and Josiah H. Townsend. Summary of recent changes in higher taxonomic categories of Mesoamerican amphibians and reptiles. Pp. 18–27. Townsend, Josiah H., and Larry David Wilson. Conservation of the Honduran herpetofauna: Issues and imperatives. Pp. 460–487. Townsend, Josiah H., and Larry David Wilson. Biogeography and conservation of the Honduran subhumid forest herpetofauna. Pp. 686–705. Wilson, Larry David, and Josiah H. Townsend. The Herpetofauna of Mesoamerica: Biodiversity significance, conservation status, and future challenges. Pp. 760–812. "
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