scholarly journals Relationship Between Bird Diversity and Habitat along a Pine- Oak Successional Forest in Southern Mexico

2018 ◽  
Author(s):  
R. Carlos Almazán-Núñez ◽  
Gregory Michaël Charre ◽  
Rubén Pineda-López ◽  
Pablo Corcuera ◽  
Rosalba Rodríguez-Godínez ◽  
...  
Keyword(s):  
Bird Diversity ◽  
Southern Mexico

Monitoring of small rock pools reveals differential effects of chronic anthropogenic disturbance on birds and mammals in the Calakmul region, southern Mexico

2021 ◽  
pp. 1-10
Author(s):  
Carlos M. Delgado-Martínez ◽  
Fredy Alvarado ◽  
Melanie Kolb ◽  
Eduardo Mendoza
Keyword(s):  
Species Richness ◽  
Anthropogenic Disturbance ◽  
Forest Cover ◽  
Biosphere Reserve ◽  
Bird Diversity ◽  
Small Scale ◽  
Rock Pools ◽  
Southern Mexico ◽  
Wildlife Species ◽  
The Impact

Abstract Great attention has been drawn to the impacts of habitat deforestation and fragmentation on wildlife species richness. In contrast, much less attention has been paid to assessing the impacts of chronic anthropogenic disturbance on wildlife species composition and behaviour. We focused on natural small rock pools (sartenejas), which concentrate vertebrate activity due to habitat’s water limitation, to assess the impact of chronic anthropogenic disturbance on the species richness, diversity, composition, and behaviour of medium and large-sized birds and mammals in the highly biodiverse forests of Calakmul, southern Mexico. Camera trapping records of fauna using sartenejas within and outside the Calakmul Biosphere Reserve (CBR) showed that there were no effects on species richness, but contrasts emerged when comparing species diversity, composition, and behaviour. These effects differed between birds and mammals and between species: (1) bird diversity was greater outside the CBR, but mammal diversity was greater within and (2) the daily activity patterns of birds differed slightly within and outside the CBR but strongly contrasted in mammals. Our study highlights that even in areas supporting extensive forest cover, small-scale chronic anthropogenic disturbances can have pervasive negative effects on wildlife and that these effects contrast between animal groups.

Diversity of bird feeding guilds in relation to habitat heterogeneity and land-use cover in a human-modified landscape in southern Mexico

2012 ◽  
Vol 28 (4) ◽  
pp. 369-376 ◽  
Author(s):  
Esteban Pineda-Diez de Bonilla ◽  
Jorge L. León-Cortés ◽  
José Luis Rangel-Salazar
Keyword(s):  
Land Use ◽  
Habitat Heterogeneity ◽  
Bird Species ◽  
Bird Community ◽  
Bird Diversity ◽  
Feeding Guilds ◽  
Fragmented Landscape ◽  
Secondary Forests ◽  
Southern Mexico ◽  
Point Counts

Abstract:Habitat heterogeneity is an important ecological determinant of species richness. We evaluated the diversity within bird feeding guilds as related to habitat heterogeneity and land-use cover in a human-modified tropical landscape. To quantify this process, fine-scale bird census and habitat heterogeneity data were collected for a bird community in a 22.5-km2fragmented landscape in southern Mexico. Land-use cover data derived from field surveys were used to calculate habitat heterogeneity index values and the extent of each land-use cover type in 239 grid cells of 300 × 300 m. Bird diversity values were obtained based on 1195 point-counts in these cells. Product-moment correlations and linear regression analyses were used to evaluate the relationship between bird-guild diversity values and habitat heterogeneity. A total of 109 resident bird species grouped in six feeding guilds were recorded: insectivores (42%), frugivores (21%), granivores (17%), nectarivores (9%), omnivores (8%) and carnivores (3%). Diversity values for the entire bird community were significantly positively related to habitat heterogeneity, but feeding guilds showed contrasting responses to habitat heterogeneity and the amount of land-use cover: insectivores and frugivores were more diverse and abundant in secondary forests than in any other land-cover. Our findings illustrate the importance of small landscape fragments as potential key refuges for the most diverse and specialized feeding guilds, such as granivores and insectivores.

Overcoming Challenges of International Migration Research: A Case Study Approach in Southern Mexico

2016 ◽  
Vol 13 (1) ◽  
pp. 131-143
Author(s):  
Julie Boyles
Keyword(s):  
International Migration ◽  
Common Ground ◽  
Data Gathering ◽  
Ethnographic Case Study ◽  
Case Study Approach ◽  
Southern Mexico ◽  
Mixed Methods Approach ◽  
Study Approach ◽  
Migration Research

An ethnographic case study approach to understanding women’s actions and reactions to husbands’ emigration—or potential emigration—offers a distinct set of challenges to a U.S.-based researcher.  International migration research in a foreign context likely offers challenges in language, culture, lifestyle, as well as potential gender norm impediments. A mixed methods approach contributed to successfully overcoming barriers through an array of research methods, strategies, and tactics, as well as practicing flexibility in data gathering methods. Even this researcher’s influence on the research was minimized and alleviated, to a degree, through ascertaining common ground with many of the women. Research with the women of San Juan Guelavía, Oaxaca, Mexico offered numerous and constant challenges, each overcome with ensuing rewards.

The value, costs, and meaning of transnational migration in rural Oaxaca, Mexico

2006 ◽  
Vol 3 (1) ◽  
pp. 15-25 ◽  
Author(s):  
Jeffrey H. Cohen ◽  
Bernardo Rios ◽  
Lise Byars
Keyword(s):  
Social Networks ◽  
Sense Of Belonging ◽  
Southern California ◽  
Transnational Migration ◽  
Urban Centers ◽  
Cultural Economic ◽  
Southern Mexico ◽  
Shared Identity ◽  
The Social

Rural Oaxacan migrants are defined as quintessential transnational movers, people who access rich social networks as they move between rural hometowns in southern Mexico and the urban centers of southern California.  The social and cultural ties that characterize Oaxacan movers are critical to successful migrations, lead to jobs and create a sense of belonging and shared identity.  Nevertheless, migration has socio-cultural, economic and psychological costs.  To move the discussion away from a framework that emphasizes the positive transnational qualities of movement we focus on the costs of migration for Oaxacans from the state’s central valleys and Sierra regions.   

Survey on Bird Species and Analysis on Bird Diversity in the Central Kunlun Mountains in the Early Winter

2010 ◽  
Vol 27 (2) ◽  
pp. 230-235
Author(s):  
Ming MA ◽  
Bao-wen HU ◽  
Yu MEI ◽  
Thomas McCarthy
Keyword(s):  
Bird Species ◽  
Bird Diversity ◽  
Early Winter ◽  
Kunlun Mountains

GEOCHRONOLOGY AND PETROGENESIS OF THE PUERTO ESCONDIDO-HUATULCO INTRUSIONS IN SOUTHERN MEXICO AND STRUCTURAL ANALYSIS OF THE WESTERN CHACALAPA FAULT SYSTEM

2019 ◽  
Author(s):  
Samantha Yahel García Hernández ◽  
◽  
Dante J. Morán-Zenteno ◽  
Barbara M. Martiny ◽  
Gustavo Tolson
Keyword(s):  
Structural Analysis ◽  
Fault System ◽  
Southern Mexico

GEOCHRONOLOGY AND PETROGENESIS OF THE JAMILTEPEC – PUERTO ESCONDIDO BATHOLITHS: NEW INSIGHTS ON SOUTHERN MEXICO CENOZOIC MAGMATISM

2019 ◽  
Author(s):  
Hermes Martín García Rodríguez ◽  
◽  
Dante J. Morán-Zenteno ◽  
Barbara M. Martiny
Keyword(s):  
Southern Mexico ◽  
Cenozoic Magmatism

Tongues of Fire

2018 ◽  
Author(s):  
Nancy Farriss
Keyword(s):  
Cultural Difference ◽  
Language Contact ◽  
Social Contexts ◽  
Culture Contact ◽  
Rhetorical Strategies ◽  
Southern Mexico ◽  
Fine Grained ◽  
Indigenous Church ◽  
Cultural Gaps

Language and translation governed the creation of Mexican Christianity during the first centuries of colonial rule. Spanish missionaries collaborated with indigenous intellectuals to communicate the gospel in dozens of local languages that had previously lacked grammars, dictionaries, or alphabetic script. The major challenge to translators, more serious than the absence of written aids or the great diversity of languages and their phonetic and syntactical complexity, was the vast cultural difference between the two worlds. The lexical gaps that frustrated the search for equivalence in conveying fundamental Christian doctrines derived from cultural gaps that separated European experiences and concepts from those of the Indians. This study focuses on the Otomangue languages of Oaxaca in southern Mexico, especially Zapotec, and relates their role in the Dominican evangelizing program to the larger frame of culture contact in postconquest Mesoamerica. Fine-grained analysis of translated texts is used to reveal the rhetorical strategies of missionary discourse and combines with an examination of language contact in different social contexts. A major aim is to spotlight the role of the native elites in shaping what emerged as a new form of Christianity. As translators, chief catechists, and parish administrators they made evangelization in many respects an indigenous enterprise and the Mexican church it created an indigenous church.

Residual Patches and their Contribution to Forest-Bird Diversity on Northern Minnesota Aspen Clearcuts

1998 ◽  
Vol 12 (1) ◽  
pp. 190-199 ◽  
Author(s):  
Samuel B. Merrill ◽  
Francesca J. Cuthbert ◽  
Gary Oehlert
Keyword(s):  
Bird Diversity ◽  
Forest Bird
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