Search Results (4)

Rarámuri Criollo (RC) cattle have been raised by the isolated Tarahumara communities of Chihuahua, Mexico, for nearly 500 years, mostly under natural selection and minimal management. RC cattle were introduced to the United States Department of Agriculture-Agricultural Research Service Jornada Experimental Range (RCJER) in 2005 to begin evaluations of beef production performance and their adaptation to the harsh ecological and climatic conditions of the Northern Chihuahuan Desert. While this research unveiled crucial information on their phenotypic plasticity and adaptation, the genetic diversity and structure of the RCJER population remains poorly understood. This study analyzed the genetic diversity, population structure, ancestral composition, and selection signatures of the RCJER herd using a ~64 K SNP array. The RCJER herd exhibits moderate genetic diversity and low population stratification with no evident clustering, suggesting a shared genetic background among different subfamilies. Admixture analysis revealed the RCJER herd represents a distinctive genetic pool within the Criollo cattle breeds, with significant Iberian ancestry. Selection signatures identified candidate genes and quantitative trait loci (QTL) for traits associated with milk composition, growth, meat and carcass, reproduction, metabolic homeostasis, health, and coat color. The RCJER population represents a distinctive genetic resource adapted to harsh environmental conditions while maintaining productive and reproductive attributes. These findings are crucial to ensuring the long-term genetic conservation of the RCJER and their strategic expansion into locally adapted beef production systems in the USA. Full article

Humans have been monitoring light from the solar system to tell the time and plan activities since Time Immemorial. This is an analysis regarding why Native Americans living in the upper Colorado River Basin chose to monitor light from the western sky using a light marker that is approximately 4.02 miles long and 2.07 miles wide, or approximately 12.7 square miles. The light catching is accomplished in a massive geoscape by carefully calibrated and engineered stone markers. The scale of this light marker and its functional topographic components makes it one of the biggest and most elaborate in North America. As such, it is a World-Balancing geosite. This analysis is based on 522 ethnographic interviews, with 316 that were conducted during the Canyonlands National Park (Canyonlands NP) ethnographic study and 206 that were conducted during two BLM ethnographic studies. The findings are situated among tribally approved ethnographic findings from more than a dozen other studies conducted by the authors. Full article

The sustainable use of Native American heritage places is viewed in this analysis as serving to preserve their traditional purposes and sustaining the cultural landscapes that give them heritage meaning. The research concerns the potential impacts of heritage tourism to selected Native American places at Arches National Park, Canyonlands National Park, and Hovenweep National Monument. The impacts of tourists on a heritage place must be understood as having both potential effects on the place itself and on an integrated cultural landscape. Impacts to one place potentially change other places. Their functions in a Native American landscape, and the integrity of the landscape itself. The analysis is based on 696 interviews with representatives from nine tribes and pueblos, who, in addition to defining the cultural meaning of places, officially made 349 heritage management recommendations. The U.S. National Park Service interprets Natives American resources and then brings millions of tourists to these through museums, brochures, outdoor displays, and ranger-guided tours. Native American ethnographic study participants argued that tourist education and regulation can increase the sustainability of Native American places in a park and can help protect related places beyond the park. Full article

National parks have been called “America’s best idea”, but their creation and management never fail to stir controversy. On September 12, 1964, President Lyndon B. Johnson signed the bill creating Canyonlands National Park (CANY). Instead of a preservation climax, however, the establishment of CANY simply opened a new chapter in the long-term effort to protect a much greater percentage of southeastern Utah’s canyon country. Over the next several decades, park enthusiasts and wilderness advocates sought to expand the boundaries of CANY, while agricultural interests and extractive industries lobbied vigorously to limit the influence of the National Park Service. In this paper, we use archival data and methods to reconstruct the story of CANY’s creation and review attempts since then to extend protections beyond the original park’s borders, seeking to understand the different social, political, and economic forces that aligned to propose—as well as the forces that rallied to contest—these expansion efforts. While our findings indicate that the stakeholders involved and the issues that drive them have changed little over the past sixty years, we also cite several examples of successful collaboration that could serve as guideposts for future conservation efforts, both in the U.S. and elsewhere. Full article