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5 resultados encontrados para: AUTOR: Meyer, John R.
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1.
Artículo
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Precipitous decline of white-lipped peccary populations in Mesoamerica
Thornton, Daniel (autor) ; Reyna Hurtado, Rafael Ángel (autor) ; Perera Romero, Lucy (autora) ; Radachowsky, Jeremy (autor) ; Hidalgo Mihart, Mircea Gabriel (autor) ; García Anleu, Rony (autor) ; McNab, Roan (autor) ; Mcloughlin, Lee (autor) ; Foster, Rebecca (autora) ; Harmsen, Bart (autor) ; Moreira Ramírez, José Fernando (autor) ; Diaz Santos, Fabricio (autor) ; Jordan, Christopher A. (autor) ; Salom Pérez, Roberto (autor) ; Meyer, Ninon France Victoire (autor) ; Castañeda, Franklin (autor) ; Elvir Valle, Fausto Antonio (autor) ; Ponce Santizo, Gabriela (autora) ; Amit, Ronit (autora) ; Arroyo Arce, Stephanny (autora) ; Thomson, Ian (autor) ; Moreno, Ricardo (autor) ; Schank, Cody J. (autor) ; Arroyo Gerala, Paulina (autora) ; Bárcenas, Horacio V. (autor) ; Brenes Mora, Esteban (autor) ; Calderón, Ana Patricia (autora) ; Cove, Michael V. (autor) ; Gómez Hoyos, Diego (autor) ; González Maya, José F. (autor) ; Guy, Danny (autor) ; Hernández Jiménez, Gerobuam (autor) ; Hofman, Maarten (autor) ; Kays, Roland (autor) ; King, Travis (autor) ; Martinez Menjivar, Marcio Arnoldo (autor) ; Maza, Javier de la (autor) ; León Pérez, Rodrigo (autor) ; Ramos, Víctor Hugo (autor) ; Rivero Hernández, Crysia Marina (autora) ; Romo Asunción, Sergio (autor) ; Juárez López, Rugieri (autor) ; Jesús de la Cruz, Alejandro (autor) ; De la Torre, Jesús Antonio (autor) ; Towns, Valeria (autora) ; Schipper, Jan (autor) ; Portillo Reyes, Hector Orlando (autor) ; Artavia, Adolfo (autor) ; Hernández Pérez, Edwin Luis Oswaldo (autor) ; Martínez, Wilber (autor) ; Urquhart, Gerald R. (autor) ; Quigley, Howard (autor) ; Pardo, Lain E. (autor) ; Sáenz, Joel C. (autor) ; Sanchez, Khiavett (autora) ; Polisar, John (autor) ;
Contenido en: Biological Conservation Vol. 242, no. 108410 (2020), p. 1-12 ISSN: 0006-3207
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Resumen en: Inglés |
Resumen en inglés

Large mammalian herbivores are experiencing population reductions and range declines. However, we lack regional knowledge of population status for many herbivores, particularly in developing countries. Addressing this knowledge gap is key to implementing tailored conservation strategies forspecies whose population declines are highly variable across their range. White-lipped peccaries (Tayassupecari) are important ecosystem engineers in Neotropical forests and are highly sensitive to human disturbance. Despite maintaining a wide distributional range, white-lipped peccaries are experiencing substantial population declines in some portions of their range.We examined the regional distribution and population status of the species in Mesoamerica. We used a combination of techniques, including expert-based mapping and assessment of population status, and data-driven distribution modelling techniques to determine the status and range limits of white-lipped peccaries. Our analysis revealed declining and highly isolated populations of peccaries across Mesoamerica, with a range reduction of 87% from historic distribution and 63% from current IUCN range estimates for the region. White-lipped peccary distribution is affected by indices of human influence and forest cover, and more restricted than other sympatric large herbivores, with their largest populations confined to transboundary reserves. To conserve white-lipped peccaries in Mesoamerica, transboundary efforts will be needed that focus on both forest conservation and hunting management, increased cross-border coordination, and reconsideration of country and regional conservation priorities. Our methodology to detail regional white-lipped peccary status could be employed on other poorly-known large mammals.


2.
Artículo
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Phylogeography of ants from the Brazilian Atlantic Forest
Ströher, Patrícia R. (autora) ; Meyer, Andreas L. S. (autor) ; Zarza Franco, Guadalupe Eugenia (autora) ; Tsai, Whitney L. E. (autora) ; McCormack, John E. (autor) ; Pie, Marcio R. (autor) ;
Contenido en: Organisms Diversity & Evolution Vol. 19, no. 3 (2019), p. 435-445 ISSN: 1618-1077
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Resumen en: Inglés |
Resumen en inglés

Known for its remarkable biodiversity and high levels of endemism, the Brazilian Atlantic Rainforest has been characterized as one of the most threatened biomes on the planet. Despite strong interest in recent years, we still lacka comprehensive scenario to explain the origin and maintenance of diversity in this region, partially given the relatively low power of analyses involving few independent genetic loci. In this study, we examine a phylogenomic dataset of five ant species to investigate phylogeographical patterns across the Brazilian Atlantic Forest. We sequenced ultraconserved elements to generate hundreds of loci usinga bait set developed specifically for hymenopterans. We analyzed the data using Bayesian and maximum likelihood approaches of phylogenetic inference. Results were then integrated with environmental niche modeling of current and past climates, including the Last Glacial Maximum and the last interglacial period. The studied species showed differentiation patterns that were consistent with the north/south division of the Atlantic Rainforest indicated in previous studies for other taxa.

However, there were differences among species, both in the location of phylogeographic breaks and in the pattern of genetic variation within these areas. Samples from southern localities tended to show recent genetic structure, although a site in Tapiraí (state of São Paulo) repeatedly showed an intriguing older history of differentiation. All species experienced shifts in areas of suitability through the time. Our study suggests that distinct groups may have responded idiosyncratically to the climatic changes that took place in the Brazilian Atlantic Forest. The amount of intraspecific genetic structure was related to the inferred geographical distribution of habitat suitability according to current and past times. Also, a parallel between the amount of Quaternary climatic suitability and the level of interspecific differentiation was detected for four species. Finally, despite strong contractions at the northeastern region of the forest, the remaining areas appear to have been able to act as refugia.


3.
- Artículo con arbitraje
Population declines and priorities for amphibian conservation in Latin America
Young, Bruce E. ; Lips, Karen Rene (coaut.) ; Reaser, Jamie K. (coaut.) ; Ibáñez, Roberto (coaut.) ; Salas, Antonio W. (coaut.) ; Cedeño-Vázquez, J.R. (coaut.) ; Coloma, Luis A. (coaut.) ; Ron, Santiago (coaut.) ; La Marca, Enrique (coaut.) ; Meyer, John R. (coaut.) ; Muñoz Alonso, Luis Antonio (coaut.) ; Bolaños, Federico (coaut.) ; Chaves, Gerardo (coaut.) ; Romo, David (coaut.) ;
Clasificación: AR/597.8 / P6
Contenido en: Conservation Biology Vol. 15, no. 5 (October 2001), p. 1213-1223 ISSN: 0888-8892
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030006517 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Español | Inglés |
Resumen en español

A pesar de las dramáticas disminuciones en las poblaciones de anfibios que se han reportado a nivel mundial, nuestro conocimiento sobre la extensión de las disminuciones en Latinoamérica, donde la diversidad de anfibios es alta, se encuentra limitado a unos pocos estudios bien documentados. Para conocer mejor la extensión geográfica de las disminuciones, las posibles causas y las medidas necesarias para mejorar la capacidad de los científicos latinoamericanos para investigar el fenómeno y realizar recomendaciones de manejo efectivas, llevamos a cabo tres talleres regionales con 88 herpetólogos y conservacionistas latinoamericanos. Las disminuciones poblacionales están ampliamente distribuidas en Latinoamérica. Por lo menos 13 países han tenido disminuciones y en 40 casos las especies son ahora consideradas extintas o extirpadas en un país donde alguna vez existieron. Las disminuciones o extinciones han afectado a 30 géneros y nueve familias de anfibios. La mayoría de las disminuciones han ocurrido en áreas de más de 500 m de elevación en Centroamérica y de más de 1000 m en los Andes. La mayoría de las disminuciones documentadas ocurrieron en los años 1980. De las posibles causas estudiadas a la fecha, el cambio climático parece ser importante en uno de los sitios y la enfermedad causada por un hongo chítrido ha sido identificada en sitios de tres países.

A pesar de que se estén llerando a cabo muchos estudios de monitoreo en una variedad de hábitats, la mayoría de los estudios son recientes y de corta duración. En una resolución firmada, los participantes de los talleres solicitaron una mayor colaboración y comunicación entre científicos que trabajan en Latinoaméica para conocer la extensión geográfica de las disminuciones poblacionales y la distribución de posibles factores causales. La conservación in situ es importante para proteger hábitats, pero los programas de producción en cautiverio de especies sujetas a una inminente extinción también son necesarios. Un mejor conocimiento de la taxonomía y la historia natural de los anfibios y un mayor financiamiento de la investigación y el monitoreo son críticos para desarrollar las bases científicas para llevar a cabo acciones de manejo que detengan o reviertan las disminuciones poblacionales observadas.

Resumen en inglés

Although dramatic amphibian population declines have been reported worldwide, our understanding of the extent of the declines in Latin America, where amphibian diversity is high, is limited to a few well-documented studies. To better understand the geographic extent of declines, their possible causes, and the measures needed to improve Latin American scientists' ability to research the phenomenon and make effective management recommendations, we convened three regional workshops with 88 Latin American herpetologists and conservationists. Population declines are widespread in Latin America. At least 13 countries have experienced declines, and in 40 cases species are now thought to be extinct or extirpated in a country where they once occurred. Declines or extinctions have affected 30 genera and nine families of amphibians. Most declines have occurred in remote highlands, above 500 m in elevation in Central America and above 1000 m in the Andes. Most documented declines occurred in the 1980s. Of the possible causes studied to date, climate change appears to be important at one site and chytrid fungal disease has been identified at sites in three countries. Although many monitoring studies are currently underway in a variety of habitats, most studies are recent and of short duration. In a signed resolution, workshop participants called for greater collaboration and communication among scientists working in Latin America to understand the geographic extent of population declines and the distribution of possible causal factors. In situ conservation is important to protect habitats, but captive-rearing programs for species subject to imminent extinction are also needed. Better understanding of the taxonomy and natural history of amphibians and more funding for research and monitoring are critical to developing a scientific basis for management action to arrest and reverse population declines.


4.
Capítulo de libro
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Amphibians and reptiles: recommendations and priorities for monitoring
Jiménez Cruz, Ruth (autora) ; Schmitter Soto, Juan Jacobo (autor) ; Muñoz Alonso, Luis Antonio (autor) ; Cedeño-Vázquez, J.R. (autor) ; Morales Álvarez, Julio (autor) ; Barrientos, Christian (autor) ; Castañeda Moya, Francisco (autor) ; Meyer, John R. (autor) ; Lee, Julian C. (autor) ;
Contenido en: Taller sobre inventario y monitoreo de biodiversidad de la selva maya: informe sobre el taller de monitoreo de biodiversidad de la selva maya: México, Guatemala, Belice / edited by Olga Herrera MacBryde Flores, Petén, Guatemala : Smithsonian Institution, 1998 páginas 169-176
Bibliotecas: Campeche , Chetumal , San Cristóbal
Cerrar
SIBE Campeche
54137-30 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Chetumal
54137-20 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
54137-10 (Disponible)
Disponibles para prestamo: 1
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5.
Libro
The snakes of Honduras / Larry David Wilson, John R. Meyer
Wilson, Larry David ; Meyer, John R. (coaut.) ;
s.l. : Milwaukee Public Museum , 1985
Clasificación: H/597.96 / W5
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030002560 (Disponible) , ECO030002559 (Disponible)
Disponibles para prestamo: 2