Identifying hotspots of land use cover change under socioeconomic and climate change scenarios in Mexico

This study identifies the hotspots of land use cover change (LUCC) under two socioeconomic and climate change scenarios [business as usual (BAU) and a pessimistic scenario] at the national level for Mexico for three-time periods. Modelling suggests that by 2050 grassland and tropical evergreen forest will be the most endangered ecosystems, having lost 20–33% (BAU) or 43–46% (pessimistic scenario) of their extent in comparison to 1993. Agricultural expansion would be the major driver of LUCC, increasing from 24.4% of the country in 1993 to 30% (BAU) or 34% (pessimistic) in 2050. The most influential variables were distance from roads and human settlements, slope, aridity, and evapotranspiration. The hotspots of LUCC were influenced by environmental constraints and socioeconomic activities more than by climate change. These findings could be used to build proposals to reduce deforestation, including multiple feedbacks among urbanization, industrialization and food consumption

Vulnerability of biodiversity to land use change and climate change in Mexico

Biodiversity in Mexico is threatened by Land Use/Cover Change (LUCC) and Climate Change (CC). Identifying what sites will be most vulnerable to these threats can help to prioritise conservation, mitigation and adaptation strategies and target limited resources. Therefore, the aims of this study are 1) to identify the most vulnerable sites to LUCCs under different socio-economic and CC scenarios, and 2) to assess the vulnerability of endemic and threatened vertebrate species to establish prioritization strategies for biodiversity conservation. Spatially explicit socio-economic scenarios were created at national and subnational level (Chapter 3). National LUCC models were then developed using the DINAMICA EGO software (Chapter 4). These models were run for three future time slices (2020s, 2050s and 2080s) and two contrasting future climate and socio-economic scenarios to determine biodiversity vulnerability (Chapter 5). Vulnerability was estimated by quantifying the exposure, sensitivity and adaptive capacity to LUCC and CC. This framework integrates national information about the priority sites of biodiversity conservation and their future extent of natural covers under future socio-economic and climate conditions. Finally, the vulnerability framework was also applied in a regional case-study in three municipalities of southern Mexico (Chapter 6). Results reveal that temperate forest is the most vulnerable ecosystem type in Mexico, followed by natural grasslands and tropical evergreen forests. Agriculture is the driver of this threat, which is projected to expand to feed an increasing population under dryer climatic conditions. More than 40% of endemic and endangered mammals are in places ranking from medium to extremely high vulnerability, followed by the 28% of the amphibians, 25% and 23% for reptiles and birds, respectively. These vertebrates are principally distributed on temperate forests and tropical dry forests. In the regional scale, rain-fed agriculture (RfA) and anthropogenic grasslands are the principal LUCC drivers, threatening 31 species of endangered vertebrates. A local strategy for creating corridors between patches close to rivers from the south to the north of one municipality is supported as conservation priority for the regional biodiversity. This research presents a novel approach for prioritising conservation strategies in highly biodiverse countries using readily available data sources, demonstrated at different spatial and temporal scales

The Archaeology of Disjuncture: Classic Period Disruption and Cultural Divergence in the Tuxtla Mountains of Mexico

Reconstructing human interaction systems has been a major objective of archaeological research, but we have typically examined the topic in a conceptually limited manner. Most studies have—intentionally or unintentionally—focused on how trade, communication, conquest, and migration foster cultural similarities over long distances. It has largely been a positivistic endeavor that exclusively features groups linked through a single network but glosses over how alternative networks intersect with the former through common nodes. Models of long-distance interaction have largely ignored variation in how external influences are negotiated across space within the receiving region. We adapt Arjun Appadurai’s concept of disjuncture to conceptualize how human groups negotiate cultural messages transmitted through multiscalar interaction networks. Disjuncture fundamentally refers to the decoupling of different facets of culture, economy, and politics where human interactions follow variable trajectories through space. The variability with which human groups reconcile foreign cultural information within local social networks leads to cultural diversity across space in the receiving region. We use the concept to detail the variability with which Teotihuacan symbols, ideology, and economic influences were adopted across the Tuxtlas region of southern Veracruz, Mexico

Faculty Publications and Creative Works 2004

Faculty Publications & Creative Works is an annual compendium of scholarly and creative activities of University of New Mexico faculty during the noted calendar year. Published by the Office of the Vice President for Research and Economic Development, it serves to illustrate the robust and active intellectual pursuits conducted by the faculty in support of teaching and research at UNM

2013 Commencement Program

The program for the Portland State University 2013 Commencement ceremonies, held June 13, 2013. Richard Tapia received an honorary degree and delivered the commencement addresses. Barbara Ames received an honorary degree during the afternoon ceremony for the College of the Arts, School of Business Administration, Graduate School of Education, Maseeh College of Engineering and Computer Science, School of Social Work, and the College of Urban and Public Affairs.https://pdxscholar.library.pdx.edu/commencement_2010s/1003/thumbnail.jp

California's Arts and Cultural Ecology

Californians create, organize, and nurture one of the world's richest arts and cultural ecologies. Across diverse landscapes, they preserve traditions and unveil cutting-edge new artwork. As artists, cultural leaders, community-builders, and arts lovers, they build organizations that nurse creativity from conception through production, presentation, and participation.California's arts and cultural ecology encompasses complex ties among people, organizations, and places. An ecological approach underscores the prominence and contributions of these arts ecology components and how they can be strengthened, especially in times of economic austerity.California's arts and cultural nonprofits play an initiating and pivotal role in this ecology. They are important shapers of the state's internationally renowned cultural industries. They preserve, commission, and present a cornucopia of music, performance, heritage, and visual arts to people in all of the state's regions, across age groups and ethnicities at all levels of income and wealth.Our study documents the budget size, disciplinary focus, and intrinsic and economic impacts of nearly 11,000 California arts and cultural nonprofits, mapping them onto cities and regions. We use new data from the California Cultural Data Project, The National Center for Charitable Statistics, the American Community Survey, the Survey of Public Participation in the Arts, and Impact Analysis for Planning. To explore causal connections, we correlate elements of this mosaic with community characteristics. We detail how people work for the sector, volunteer, and make financial contributions. We show the overall impact of people and organizations on California's economy in terms of jobs, income, output, and state and local tax revenue. With interview data, we offer qualitative insights into governance, interorganizational relationships, and special challenges for small nonprofits. California's nonprofit arts and cultural organizationsCalifornia hosts more nonprofit arts and cultural organizations than do most of the world's nations. Their ranks include multipurpose cultural centers, science and visual arts museums, symphony orchestras and folk ensembles, artist service organizations, ethnic arts groups, literary societies, dance companies, professional associations, and many more. Some have no formal budgets, do little fundraising, and operate chiefly on energetic contributions of volunteers. Others manage sizable budgets with extensive staff, run large productions and venues, and rely less on volunteers.California's nearly 11,000 arts and cultural nonprofits operate across the state's regions. Smaller organizations vastly outnumber large ones, with 85% of organizational budgets falling under $250,000 and 48$25,000. Yet California's nonprofits have a much larger footprint than formal budgets convey, because at all budget sizes, they engage the services of substantial numbers of volunteers and receive in-kind contributions of time and materials uncommon in public and for-profit sectors.Reflecting California's ethnic diversity and its immigrant character, 22% of California's arts and cultural nonprofits focus on ethnic, folk arts, and multidisciplinary work. Another fifth focus on humanities, legacy, and other museums. Visual arts organizations, including art museums, comprise 5% of California nonprofits, but 10% of those with budgets over $10 million

Evidence of a collision between the Yucatán Block and Mexico in the Miocene

We present the evidence for an anomalous southwest-dipping slab in southern Mexico. The main evidence comes from a clear receiver function image along a seismic line across the Isthmus of Tehuantepec and is also supported by a previous global tomographic model. The slab dips at 35°, is approximately 250 km in length and appears to truncate the Cocos slab at about 120 km depth. We hypothesize that the slab was created by subduction of oceanic lithosphere prior to the collision of the Yucatán Block with Mexico at approximately 12 Ma. This scenario would explain the Chiapas Fold and Thrust Belt as the product of this collision, and its age constrains the date of the event to be in the Miocene

Discovering Diverse Mechanisms of Migration: The Mexico-U.S. Stream from 1970 to 2000

Migrants to the United States are a diverse population. This diversity, captured in various migration theories, is overlooked in empirical applications that describe a typical narrative for an average migrant. Using the Mexican Migration Project data from about 17,000 first-time migrants between 1970 and 2000, this study employs cluster analysis to identify four types of migrants with distinct configurations of characteristics. Each migrant type corresponds to a specific theoretical account, and becomes prevalent in a specific period, depending on the economic, social and political conditions. Strikingly, each migrant type also becomes prevalent around the period in which its corresponding theory is developed.Sociolog