Términos relacionados

7 resultados encontrados para: AUTOR: Peterson, A. Townsend
  • «
  • 1 de 1
  • »
1.
Artículo
The mexican sheartail (doricha eliza): morphology, behavior, distribution, and endangered status
Ortíz Pulido, Raúl ; Townsend Peterson, A. (coaut.) ; Robbins, Mark B. (coaut.) ; Díaz, Roman (coaut.) ; Navarro Sigüenza, Adolfo Gerardo (coaut.) ;
Clasificación: AR/598.899 / M4
Contenido en: The Wilson Bulletin Vol. 114, no. 2 (June 2002), p. 153-286 ISSN: 0043-5643
Bibliotecas: Campeche , San Cristóbal , Tapachula
Cerrar
SIBE Campeche
ECO040001265 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
B2053 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020006167 (Disponible)
Disponibles para prestamo: 1
Resumen en español

Se revisaron la variación morfológica, estatus taxonómico, distribución geográfica, ecología y conducta de un taxón muy poco conocido, el colibrí tijereta mexicano (Doricha eliza), en base en estudios de campo y en museo. A pesar de que la amplia disyunción en su distribución geográfica sugiere la existencia de dos taxones diferentes, la diferenciación morfológica es mínima y no amerita reconocimiento taxonómico formal. Sin embargo, las diferencias ecológicas entre las dos poblaciones son más marcadas, con nichos ecológicos modelados que casi no se sobrelapan, y diferencias ontogenéticas y de conducta pueden existir. En general, la población de Veracruz debe ser considerada en peligro de extinción, mientras que la población de Yucatán debe ser designada de distribución restringida y con un estatus de conservación de casi amenazada.

Resumen en inglés

We reviewed morphological variation, taxonomic status, geographic distribution, ecology, and behavior of the poorly known hummingbird, the Mexican Sheartail (Doricha eliza), based on museum specimens and field studies. Although the broadly disjunct distribution of the species would suggest that two taxa are involved, morphological differences between the populations appear minor, not deserving of formal taxonomic recognition. Ecological differences between the two populations are stronger, however; modeled ecological niches are nearly nonoverlapping, and ontogenetic and behavioral differences may exist. We recommend that, given its extremely restricted distribution, the Veracruz population be considered critically endangered, whereas the Yucatan population be designated as having a restricted range and accorded near-threatened status.


2.
Libro
Ecological niches and geographic distributions / A. Townsend Peterson, Jorge Soberón, Richard G. Pearson, Roberto P. Anderson, Enrique Martínez Meyer, Miguel Nakamura, Miguel Bastos Araújo
Peterson, A. Townsend (1964-) ; Soberón, Jorge (coaut.) ; Pearson, Richard G. (coaut.) ; Anderson, Robert P. (coaut.) ; Martínez Meyer, Enrique (coaut.) ; Nakamura, Miguel (coaut.) ; Bastos Araújo, Miguel (coaut.) ;
Princeton, New Jersey : Princeton University Press , 2011
Clasificación: 574.5247 / E2
Bibliotecas: Campeche , Tapachula
Cerrar
SIBE Campeche
ECO040004798 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020012979 (Disponible) , ECO020012502 (Disponible)
Disponibles para prestamo: 2
Índice | Resumen en: Inglés |
Resumen en inglés

This book provides a first synthetic view of an emerging area of ecology and biogeography, linking individual- and population-level processes to geographic distributions and biodiversity patterns. Problems in evolutionary ecology, macroecology, and biogeography are illuminated by this integrative view. The book focuses on correlative approaches known as ecological niche modeling, species distribution modeling, or habitat suitability modeling, which use associations between known occurrences of species and environmental variables to identify environmental conditions under which populations can be maintained. The spatial distribution of environments suitable for the species can then be estimated: a potential distribution for the species. This approach has broad applicability to ecology, evolution, biogeography, and conservation biology, as well as to understanding the geographic potential of invasive species and infectious diseases, and the biological implications of climate change.

Índice

Acknowledgments
1. Introduction
Practicalities
This Volume
Part I
THEORY
2. Concepts of Niches
Major Themes in Niche Concepts
Grinnellian and Eltonian Niches
Estimating Grinnellian Niches: Practicalities
Summary
3. Niches and Geographic Distributions
Relations between Environmental and Geographic Spaces
The Ecological Equations
The BAM Diagram: A Thinking Framework
Ecological Niches and Geographic Distributions
Estimating Geographic Areas and Ecological Niches
Summary
Part II
PRACTICE
4. Niches and Distributions in Practice: Overview
General Principles
Steps to Building Niche Models
5. Species’ Occurrence Data
Types of Occurrence Data
Occurrence Data Content and Availability
Summary
6. Environmental Data
Species-Environment Relationships
Environmental Data for Ecological Niche Modeling
Environmental Data in Practice
Summary
7. Modeling Ecological Niches
What Is Being Estimated?
Modeling Algorithms
Implementation
Model Calibration
Model Complexity and Overfi tting
Study Region Extent and Resolution Revisited
Model Extrapolation and Transferability
Differences among Methods and Selection of “Best” Models
Characterizing Ecological Niches
Summary
8. From Niches to Distributions
Potential Distributional Areas
Nonequilibrium Distributions
Detecting and Processing Nonequilibrium Distributions
Summary
9: Evaluating Model Performance and Signifi cance
Presences, Absences, and Errors
Calibration and Evaluation Datasets
Overfi tting, Performance, Signifi cance, and Evaluation Space
Selection of Evaluation Data
Evaluation of Performance
Assessing Model Signifi cance
Future Directions
Summary

Part III
APPLICATIONS
10. Introduction to Applications
11. Discovering Biodiversity
Discovering Populations
Discovering Species Limits
Discovering Unknown Species
Connection to Theory
Practical Considerations
Review of Applications
Discussion
12. Conservation Planning and Climate Change Effects
Generalities
Connection to Theory
Practical Considerations
Review of Applications
13. Species’ Invasions
Connection to Theory
Practical Considerations
Review of Applications
Caveats and Limitations
Future Directions and Challenges
14. The Geography of Disease Transmission
Connection to Theory
Practical Considerations
Review of Applications
Caveats and Limitations
Future Directions and Challenges
15. Linking Niches with Evolutionary Processes
Changes in the Available Environment
Niche Conservatism
Tests of Conservatism
Context
Learning More about Ecological Niche Evolution
Future Directions and Challenges
16. Conclusions
Appendices
Appendix A: Glossary of Symbols Used
Appendix B: Set Theory for G- and E-Space
Glossary
Bibliography


3.
Artículo
Distribution and conservation of birds of northern Central America
Peterson, A. Townsend ; Escalona Segura, Griselda (coaut.) ; Griffith, Jerry A. (coaut.) ;
Clasificación: AR/598.29728 / P4
Contenido en: The Wilson Bulletin Vol. 110, no. 4 (December, 1998), p. 534-543
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040001679 (Disponible)
Disponibles para prestamo: 1
Resumen en: Inglés |
Resumen en inglés

Patterns of distribution, diversity, and endemism in the birds of northern Central America were analyzed based on 541 avian species in 24 biotic regions. Many contrasts were apparent. For example, whereas species richness was concentrated in the Atlantic lowlands, with the Pacific lowlands, interior valleys, montane areas, and the Yucatan Peninsula less diverse; species endemic to the entire region were concentrated in the mountains and in the Yucatan Peninsula. Geographic patterns of endemism presented contrasts depending on the spatial scale of analysis. In contrast to overall patterns, species narrowly endemic to single geographic units were concentrated along the Pacific Coast of Chiapas and in southern Veracruz. Conservation implications of these results were explored using complementarity algorithms, producing ordered regional priority lists for the creation of optimal reserve systems. Finally, a plan of action for the study and conservation of avian diversity in northern Central America is outlined, including elements of basic inventory, systematics, and geographic analysis.


4.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Speciation in the emerald toucanet (Aulacorhynchus prasinus) complex
Puebla Olivares, Fernando ; Bonaccorso, Elisa (coaut.) ; Espinosa de Los Monteros, Alejandro J. (coaut.) ; Omland, Kevin E. (coaut.) ; Llorente Bousquets, Jorge E. (coaut.) ; Townsend Peterson, A. (coaut.) ; Navarro Sigüenza, Adolfo Gerardo (coaut.) ;
Contenido en: The Auk Vol. 125, no. 1 (Januario 2008), p. 39-50 ISSN: 0004-8038
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
46387-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal

PDF
Resumen en: Español | Inglés |
Resumen en español

Cerro Piedra Larga es una montaña aislada en el este de Oaxaca, justo al oeste del Istmo de Tehuantepec. En virtud de que en esta sierra no se ha conducido ningún inventario biológico, un estudio preliminar puede ser de interés. Durante varias semanas de trabajo en las partes altas de la sierra, desarrollamos inventarios preliminares para aves, mamíferos, reptiles, anfibios y plantas. Geográficamente, las afinidades de la biota de la sierra parecen constituir una mezcla entre la Sierra Madre Oriental y la Sierra Madre del Sur, lo cual sugiere una origen por medio de colonización y no por medio de conexiones históricas.

Resumen en inglés

Cerro Piedra Larga is an isolated mountain massif in eastern Oaxaca, lying just west of the Isthmus of Tehuantepec. No previous biological inventories had assessed this range, making even a preliminary assessment of interest. During several weeks of work in the higher portions of the mountain range, we assembled such preliminary inventories for birds, mammals, reptiles, amphibians, and plants. Geographically, the affinities of the highland biota of Cerro Piedra Larga appear to be mixed between the Sierra Madre Oriental and the Sierra Madre del Sur, suggesting that the biota likely originated by colonization, rather than via historical connections.


6.
- Artículo con arbitraje
Avifaunas of two dry forest sites in Northern Oaxaca, Mexico
Townsend Peterson, A. ; Escalona Segura, Griselda (autora) ; Zyskowski, Kristof (autor) ; Kluza, Daniel A. (autor) ; Hernández Baños, Blanca E. (autora) ;
Disponible en línea
Clasificación: AR/598.2 / A8
Contenido en: Huitzil, Revista Mexicana de Ornitología Vol. 4, no. 1 (2003), p. 3-9 ISSN: 1870-7459
Cerrar
SIBE Campeche
ECO040003316 (Disponible) , ECO040001528 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE San Cristóbal
ECO010007294 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020006126 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050002592 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Español | Inglés |
Resumen en español

Se realizaron inventarios avifaunísticos en el norte de Oaxaca, en dos sitios de la región de la Cañada del Valle de Tehuacán. Se observaron 142 especies de aves, encontrándose cerca de 100 especies en cada sitio. Se encontró un número sorprendente de especies (37) que representan poblaciones aisladas del interior restringidas por una u otra vertiente costera. Además, proporciones similares de especies fueron exclusivamente de una vertiente costera o la otra, creando una extraña mezcla en la avifauna de estos sitios que incluye aves del interior, de la vertiente costera del Pacífico y de la vertiente costera del Atlántico.

Resumen en inglés

Two sites in northern Oaxaca, in the La Cañada region of the Valle de Tehuacán, were surveyed avifaunistically. A total of 142 species was detected, with about 100 species found at each site. A surprising number (37) of species was found to represent isolated interior populations of species otherwise restricted to one or the other coastal plain, of which about even proportions were exclusively from one coastal plain or the other, creating an avifauna at these sites that is an odd mixture of birds from the Interior, the Pacific coastal plain, and the Atlantic coastal plain.


7.
- Artículo con arbitraje
*En hemeroteca, SIBE-Campeche
The Chimalapas region, Oaxaca, Mexico: a high-priority region for bird conservation in Mesoamerica
Townsend Peterson, A. ; Navarro Sigüenza, Adolfo Gerardo (coaut.) ; Hernández Baños, Blanca E. (coaut.) ; Escalona Segura, Griselda (coaut.) ; Rebón Gallardo, Fanny (coaut.) ; Rodríguez Ayala, Emir (coaut.) ; Figueroa Esquivel, Elsa M. (coaut.) ; Cabrera García, Leonardo (coaut.) ;
Clasificación: AR/598.2 / C4
Contenido en: Bird Conservation International Vol. 13, no. 3 (September 2003), p. 227-253 ISSN: 0959-2709
Cerrar
SIBE Campeche
B9495 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010007133 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020004471 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
ECO050002593 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche
PDF
Resumen en: Español | Inglés |
Resumen en español

La región de Los Chimalapas, en el este del estado de Oaxaca, México, contiene selvas tropicales húmedas, selvas tropicales secas y bosques mesófilos de montaña típicos del Neotrópico, además de bosques montanos de pino y pino-encino más típicos del Neártico. Con un total de más de 600,000 ha, gran parte de la región está cubierta por bosque en buen estado de conservación. La avifauna de los Chimalapas, que está compuesta por más de 300 especies en la selva y al menos 458 especies en la región en su totalidad, es por mucho la más diversa de cualquier región de tamaño comparable en el país, representando el 44% de las especies conocidas para México. Dentro de la región, las tierras bajas del Atlántico contienen al menos 314 especies, las regiones montanas 110 especies y los bosques secos tropicales 211 especies. Especies importantes presentes en la región incluyen al águila arpía Harpia harpyja y otras águilas grandes, el pajuil Penelopina nigra y probablemente el pavón Oreophasis derbianus, la guacamaya roja Ara macao, el zacatonero itsmeño Aimophila sumichrasti, el colorín azulrosa Passerina rositae y el quetzal Pharomachrus mocinno. El área mantiene inmensas extensiones de selva tropical y bosque mesófilo de montaña que están entre los más grandes y mejor preservados en Mesoamérica, incluyendo un continuo completo de tierras altas a bajas, con cuencas enteras conservadas de manera más o menos intactas.

Resumen en inglés

The Chimalapas region, in eastern Oaxaca, Mexico, holds lowland rainforests, tropical dry forests, and cloud forests typical of the Neotropics, as well as montane pine and pine-oak forests more typical of the Nearctic. Totaling more than 600,000 ha, much of the region is forested, and in a good state of preservation. The Chimalapas avifauna is by far the most diverse for any region of comparable size in the country, totalling at least 464 species in the region as a whole (with more than 300 species in the lowland rainforest) representing 44% of the bird species known from Mexico. Within the region, the humid Atlantic lowlands hold 317 species, the montane regions 113 species, and the southern dry forested lowlands 216 species. Important species present in the region include Harpy Eagle Harpia harpyja and several other large eagles, Black Penelopina nigra and probably Horned Oreophasis derbianus Guans, Scarlet Macaw Ara macao, Cinnamon-tailed Sparrow Aimophila sumichrasti, Rose-bellied Bunting Passerina rositae, and Resplendent Quetzal Pharomachrus mocinno. The area holds immense lowland rainforests and cloud forests that rank among the largest and best preserved in all of Mesoamerica, including a complete lowland-to-highland continuum, with entire watersheds preserved more or less intact.