Políticas rurales y pérdida de cobertura vegetal. Elementos para reformular instrumentos de fomen... more Políticas rurales y pérdida de cobertura vegetal. Elementos para reformular instrumentos de fomento agropecuario relacionados con la apertura de praderas ganaderas en el noroeste de México. Región y Sociedad 22:3-35.
Landbirds are the most abundant and diverse group of birds in North America, with nearly 900 spec... more Landbirds are the most abundant and diverse group of birds in North America, with nearly 900 species distributed across every major terrestrial habitat. Birds are indicators of environmental health; their populations track changes in habitat, water, disease, and climate. They are providers of invaluable ecosystem services, such as pest control, seed dispersal, and pollination. As the focus of bird watching, they help generate billions of dollars for national economies. Yet, we are in danger of losing this spectacular and irreplaceable bird diversity: landbirds are experiencing significant declines, ominous threats, and shrinking habitats across a continent with growing human populations, increasing resource consumption, and changing climate. Saving Our Shared Birds presents for the first time a comprehensive conservation assessment of landbirds in Canada, Mexico, and the continental United States. This new tri-national vision encompasses the complete range of many migratory species and highlights the vital links among migrants and highly threatened resident species in Mexico. It points to a set of continent-scale actions necessary to maintain the landbird diversity and abundance that are our shared responsibility. This collaborative effort of Partners in Flight (PIF) is the next step in linking the countries of the Western Hemisphere to help species at risk and keep common birds common through voluntary partnerships-our mission since 1990. Saving Our Shared Birds builds upon PIF's 2004 North American Landbird Conservation Plan, which presented science-based priorities for the conservation of 448 landbird species in Canada and the United States. Our three nations have expressed their commitment to cooperative conservation through numerous international treaties, agreements, and programs, including formation of the North American Bird Conservation Initiative (NABCI) a decade ago. The NABCI partnership recognizes that effective conservation requires a concerted effort within each country, as well as a tri-national strategy to address issues throughout the full life cycles of our birds. Today more than ever, it is urgent for the people of Canada, Mexico, and the United States to work together to keep common birds common, prevent extinction of our bird species at greatest risk, and ensure the diversity and abundance of birdlife across North America and throughout the hemisphere, far into the future. Saving Our Shared Birds shows the way forward.
El Pavito migratorio (Setophaga ruticilla) forma parte del logo de Compañeros en Vuelo (abajo) y ... more El Pavito migratorio (Setophaga ruticilla) forma parte del logo de Compañeros en Vuelo (abajo) y representa los nexos internacionales que existen gracias a las aves terrestres migratorias, que aparecen reflejados en este reporte. Greg Lavatay Fotos, esta página, de izquierda a derecha: Cotorra serrana oriental por René Valdéz, Chipe ala dorada y Pavo ocelado por Gerry Dewaghe, Chara pinta por Eduardo IÑigo-Elias, Momoto enano por Gerry Dewaghe, Águila arpía por Kenneth V. Rosenberg. Fotos, página opuesta, de izquierda a derecha: Chipe rosado por France Dewaghe, Chipe cabeza amarilla y Chipe negroamarillo por Brian Sullivan, Chipe cachetidorado por David Cree, Pavón cornudo por Fulvio Eccardi Fotos, esta página, desde arriba: Martjan Lammertink, Brian Sullivan, Greg Lavaty. Fotos, página opuesta, de arriba a abajo, de izquierda a derecha:
Numerous climate change effects on biodiversity have been anticipated and documented, including e... more Numerous climate change effects on biodiversity have been anticipated and documented, including extinctions, range shifts, phenological shifts, and breakdown of interactions in ecological communities, yet the relative balance of different climate drivers and their relationships to other agents of global change (for example, land use and land-use change) remains relatively poorly understood. This study integrated historical and current biodiversity data on distributions of 115 Mexican endemic bird species to document areas of concentrated gains and losses of species in local communities, and then related those changes to climate and land-use drivers. Of all drivers examined, at this relatively coarse spatial resolution, only temperature change had significant impacts on avifaunal turnover; neither precipitation change nor human impact on landscapes had detectable effects. This study, conducted across species’ geographic distributions, and covering all of Mexico, thanks to two large-s...
Biological monitoring is a powerful tool for understanding ecological patterns and processes, imp... more Biological monitoring is a powerful tool for understanding ecological patterns and processes, implementing sound management practices, and determining wildlife conservation strategies. In Mexico, regional long-term bird monitoring has been undertaken only over the last decade. Two comprehensive programs have incorporated bird monitoring as the main tool for assessing the impact of human productive activities on birds and habitats at local and regional levels: the Integrated Ecosystem Management (IEM) and the Mesoamerican Biological Corridor Mexico (CBMM). These programs are implemented in supremely important biodiverse regions in the southern and southeastern states of Mexico. Bird monitoring activities are based on the recruitment and participation of local people linked to sustainable productive projects promoted by the CBMM or IEM. Through a series of training workshops delivered by
Seasonal and temporal patterns of species diversity and abundance in the avifauna of Chamela, Jal... more Seasonal and temporal patterns of species diversity and abundance in the avifauna of Chamela, Jalisco, Mexico, were studied in different habitats in the coastal tropical dry forest. Species richness did not differ among three different transects. The number of species was temporally homogeneous. Species diversity was similar for all three transects, but it changed to higher values during the rainy season at arroyo habitats and during the dry season (winter) at disturbed habitats. Population fluctuations observed in the second year of the study suggest that stochastic events such as droughts in this region may influence local population dynamics. Patterns of population fluctuation of resident species are discussed with regard to censusing methods and conservation priorities.
A great many individuals, Partners in Flight (PIF) working groups, funding agencies, and other pa... more A great many individuals, Partners in Flight (PIF) working groups, funding agencies, and other partners have contributed to the establishment and growth of PIF, building the foundation that had to exist before preparation of a North American Landbird Conservation Plan could even be contemplated. To all our partners in this endeavor, we owe a great debt of thanks.
... de conservación para las aves: hacia la integración de criterios de priorización Adolfo G. Na... more ... de conservación para las aves: hacia la integración de criterios de priorización Adolfo G. Navarro-Sigüenza, Andrés Lira-Noriega ... se generaron algunos trabajos que designaron áreas prioritarias utilizando distintas metodologías (eg, aplicaciones de los SIG, Bojórquez-Tapia et ...
Many species in Mexico are threatened and in need of protection. At least seventy species are con... more Many species in Mexico are threatened and in need of protection. At least seventy species are considered to be globally threatened, yet conservation actions have been scarce and not coordinated. In 1996 BirdLife International's Important Bird Areas Program was ini-tiated ...
Políticas rurales y pérdida de cobertura vegetal. Elementos para reformular instrumentos de fomen... more Políticas rurales y pérdida de cobertura vegetal. Elementos para reformular instrumentos de fomento agropecuario relacionados con la apertura de praderas ganaderas en el noroeste de México. Región y Sociedad 22:3-35.
Landbirds are the most abundant and diverse group of birds in North America, with nearly 900 spec... more Landbirds are the most abundant and diverse group of birds in North America, with nearly 900 species distributed across every major terrestrial habitat. Birds are indicators of environmental health; their populations track changes in habitat, water, disease, and climate. They are providers of invaluable ecosystem services, such as pest control, seed dispersal, and pollination. As the focus of bird watching, they help generate billions of dollars for national economies. Yet, we are in danger of losing this spectacular and irreplaceable bird diversity: landbirds are experiencing significant declines, ominous threats, and shrinking habitats across a continent with growing human populations, increasing resource consumption, and changing climate. Saving Our Shared Birds presents for the first time a comprehensive conservation assessment of landbirds in Canada, Mexico, and the continental United States. This new tri-national vision encompasses the complete range of many migratory species and highlights the vital links among migrants and highly threatened resident species in Mexico. It points to a set of continent-scale actions necessary to maintain the landbird diversity and abundance that are our shared responsibility. This collaborative effort of Partners in Flight (PIF) is the next step in linking the countries of the Western Hemisphere to help species at risk and keep common birds common through voluntary partnerships-our mission since 1990. Saving Our Shared Birds builds upon PIF's 2004 North American Landbird Conservation Plan, which presented science-based priorities for the conservation of 448 landbird species in Canada and the United States. Our three nations have expressed their commitment to cooperative conservation through numerous international treaties, agreements, and programs, including formation of the North American Bird Conservation Initiative (NABCI) a decade ago. The NABCI partnership recognizes that effective conservation requires a concerted effort within each country, as well as a tri-national strategy to address issues throughout the full life cycles of our birds. Today more than ever, it is urgent for the people of Canada, Mexico, and the United States to work together to keep common birds common, prevent extinction of our bird species at greatest risk, and ensure the diversity and abundance of birdlife across North America and throughout the hemisphere, far into the future. Saving Our Shared Birds shows the way forward.
El Pavito migratorio (Setophaga ruticilla) forma parte del logo de Compañeros en Vuelo (abajo) y ... more El Pavito migratorio (Setophaga ruticilla) forma parte del logo de Compañeros en Vuelo (abajo) y representa los nexos internacionales que existen gracias a las aves terrestres migratorias, que aparecen reflejados en este reporte. Greg Lavatay Fotos, esta página, de izquierda a derecha: Cotorra serrana oriental por René Valdéz, Chipe ala dorada y Pavo ocelado por Gerry Dewaghe, Chara pinta por Eduardo IÑigo-Elias, Momoto enano por Gerry Dewaghe, Águila arpía por Kenneth V. Rosenberg. Fotos, página opuesta, de izquierda a derecha: Chipe rosado por France Dewaghe, Chipe cabeza amarilla y Chipe negroamarillo por Brian Sullivan, Chipe cachetidorado por David Cree, Pavón cornudo por Fulvio Eccardi Fotos, esta página, desde arriba: Martjan Lammertink, Brian Sullivan, Greg Lavaty. Fotos, página opuesta, de arriba a abajo, de izquierda a derecha:
Numerous climate change effects on biodiversity have been anticipated and documented, including e... more Numerous climate change effects on biodiversity have been anticipated and documented, including extinctions, range shifts, phenological shifts, and breakdown of interactions in ecological communities, yet the relative balance of different climate drivers and their relationships to other agents of global change (for example, land use and land-use change) remains relatively poorly understood. This study integrated historical and current biodiversity data on distributions of 115 Mexican endemic bird species to document areas of concentrated gains and losses of species in local communities, and then related those changes to climate and land-use drivers. Of all drivers examined, at this relatively coarse spatial resolution, only temperature change had significant impacts on avifaunal turnover; neither precipitation change nor human impact on landscapes had detectable effects. This study, conducted across species’ geographic distributions, and covering all of Mexico, thanks to two large-s...
Biological monitoring is a powerful tool for understanding ecological patterns and processes, imp... more Biological monitoring is a powerful tool for understanding ecological patterns and processes, implementing sound management practices, and determining wildlife conservation strategies. In Mexico, regional long-term bird monitoring has been undertaken only over the last decade. Two comprehensive programs have incorporated bird monitoring as the main tool for assessing the impact of human productive activities on birds and habitats at local and regional levels: the Integrated Ecosystem Management (IEM) and the Mesoamerican Biological Corridor Mexico (CBMM). These programs are implemented in supremely important biodiverse regions in the southern and southeastern states of Mexico. Bird monitoring activities are based on the recruitment and participation of local people linked to sustainable productive projects promoted by the CBMM or IEM. Through a series of training workshops delivered by
Seasonal and temporal patterns of species diversity and abundance in the avifauna of Chamela, Jal... more Seasonal and temporal patterns of species diversity and abundance in the avifauna of Chamela, Jalisco, Mexico, were studied in different habitats in the coastal tropical dry forest. Species richness did not differ among three different transects. The number of species was temporally homogeneous. Species diversity was similar for all three transects, but it changed to higher values during the rainy season at arroyo habitats and during the dry season (winter) at disturbed habitats. Population fluctuations observed in the second year of the study suggest that stochastic events such as droughts in this region may influence local population dynamics. Patterns of population fluctuation of resident species are discussed with regard to censusing methods and conservation priorities.
A great many individuals, Partners in Flight (PIF) working groups, funding agencies, and other pa... more A great many individuals, Partners in Flight (PIF) working groups, funding agencies, and other partners have contributed to the establishment and growth of PIF, building the foundation that had to exist before preparation of a North American Landbird Conservation Plan could even be contemplated. To all our partners in this endeavor, we owe a great debt of thanks.
... de conservación para las aves: hacia la integración de criterios de priorización Adolfo G. Na... more ... de conservación para las aves: hacia la integración de criterios de priorización Adolfo G. Navarro-Sigüenza, Andrés Lira-Noriega ... se generaron algunos trabajos que designaron áreas prioritarias utilizando distintas metodologías (eg, aplicaciones de los SIG, Bojórquez-Tapia et ...
Many species in Mexico are threatened and in need of protection. At least seventy species are con... more Many species in Mexico are threatened and in need of protection. At least seventy species are considered to be globally threatened, yet conservation actions have been scarce and not coordinated. In 1996 BirdLife International's Important Bird Areas Program was ini-tiated ...
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