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Sustaining the Grassland Sea Grasslands of the Sky Islands region once covered over 13 million acres in southeastern Arizona and adjacent portions of New Mexico, Sonora, and Chihuahua. Attempts to evaluate current ecological conditions suggest that approximately two thirds of these remain as intact or restorable grassland habitat. These grasslands provide watershed services such as flood control and aquifer recharge across the region, and continue to support dozens of species of concern. Prioritizing conservation interventions for these remaining grassland blocks has been challenging. Reliable data on condition and conservation value of grasslands in the region have not been systematically summarized. State and national boundaries further complicate... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, English, Madrean, Mexico, US, All tags... agriculture, assessment, bird, climate, climate, connectivity, development, ecoregion, endangered, erosion, fire, grassland, grazing, groundwater, invasive, land cover, mammal, management, map, mining, model, monitoring, ownership, plan, plant, priority, protected area, rare, reptile, restoration, riparian, scrub, shrub, stream, threat, threatened, vegetation, vulnerability, water, watershed, wetland, wildlife, Fewer tags Environmental flows in the desert rivers of the United States and Mexico: Synthesis of available data and gap analysis Article Abstract: Although riparian and aquatic ecosystems make up a small fraction of the area in arid and semi-arid lands, they are critical for the survival of desert life. There are, however, few compendia of efforts to define the quantity of water needed to maintain these ecosystems and understand the risks and stressors to them. Through our analysis we found that 62% of the rivers examined in the deserts of the U.S. and Mexico have had just one study over the past four decades and 67% of studies used qualitative methods. Furthermore, only one-third of the 312 species catalogued in our work have been studied more than once and only 5% have been considered five or more times. The most common risks or stressors... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquascalientes, Arizona, Baja California, California, Chihuahua, All tags... Coahuila, Data Acquisition and Development, Data Management and Integration, Data.gov Desert LCC, Desert LCC (all), Desert LCC (all), Dos Rios Pilot Area, Durango, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > RIVERS/STREAM, Eastern Mojave Desert Pilot Area, Federal resource managers, Guanajuato, Jalisco, LCC Network Science Catalog, Madrean Watersheds Pilot Area, Mexico, Nayarit, Nevada, New Mexico, Nuevo León, Publication, Publication, Querétaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Texas, United States, Utah, Zacatecas, completed, inlandWaters, product, Fewer tags Desert Flows Methodology Guidebook Successful implementation of environmental flow projects depends on land and water managers having clear objectives and access to reliable data. This guidebook provides information on a variety of methods that can be utilized under different fiscal or temporal constraints to determine and implement appropriate environmental flow targets. Based on evidence from cases focused in the Southwestern United States and Northern Mexico, steps are suggested to help ensure maintenance of flows under uncertain future natural and socioeconomic conditions. The importance of education and engagement to increase acceptance of environmental flows based projects and gain key player and community buy in is described. Limitations on... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquascalientes, Arizona, Baja California, California, Chihuahua, All tags... Coahuila, Data Acquisition and Development, Data Management and Integration, Data.gov Desert LCC, Desert LCC (all), Dos Rios Pilot Area, Durango, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > RIVERS/STREAM, Eastern Mojave Desert Pilot Area, Federal resource managers, Guanajuato, Jalisco, LCC Network Science Catalog, Madrean Watersheds Pilot Area, Mexico, Nayarit, Nevada, New Mexico, Nuevo León, Publication, Querétaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Texas, United States, User Manual, Utah, Zacatecas, completed, inlandWaters, product, Fewer tags Áreas de Interés Binacional para Mantener la Conectividad de Poblaciones de Fauna Silvestre Compartida con Potenciales Afectaciones por la Construcción del Muro Fronterizo El límite fronterizo entre México y los Estados Unidos actualmente presenta a lo largo del área geográfica barreras (para vehículos y peatones), como medida de seguridad para disminuir la entrada de migrantes indocumentados y estupefacientes. El muro fronterizo ha fragmentado los ecosistemas presentes en la región, pudiendo influir en la pérdida de la conectividad de poblaciones de fauna silvestre entre ambos países. Ante tal situación nuestro objetivo fue identificar las áreas más importantes de conectividad para 19 especies que se distribuyen en la franja fronteriza dentro de los estados de Sonora y Chihuahua y los principales impactos que puede tener la estructura asociada a la frontera. Los sitios de conectividad... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mexico, Spanish, US, border, connectivity, All tags... map, priority, threat, wildlife, Fewer tags Tectonic influences on ground water quality: insight from complementary methods. A study using multiple techniques provided insight into tectonic influences on ground water systems; the results can help to understand ground water systems in the tectonically active western United States and other parts of the world. Ground water in the San Bernardino Valley (Arizona, United States and Sonora, Mexico) is the main source of water for domestic use, cattle ranching (the primary industry), and the preservation of threatened and endangered species. To improve the understanding of ground water occurrence, movement, and sustainability, an investigation was conducted using a number of complementary methods, including major ion geochemistry, isotope hydrology, analysis of gases dissolved in ground water,... Categories: Publication; Types: Citation, Journal Citation; Tags: Arizona, Ground Water, Mexico, United States, animals, All tags... cattle, disasters, domestic, environmental Monitoring: methods, environmental monitoring, geological phenomena, geology, housing, humans, radioisotopes, radioisotopes: analysis, radioisotopes: chemistry, risk assessment, water movements, water pollution, water pollution: adverse effects, water pollution: analysis, water supply, water supply: analysis, Fewer tags What goes up: Recent trends in Mexican residential energy use This viewpoint reviews renewable energy development in 14 markets that differ in market structure (restructured vs. not restructured), use of feed-in-tariff (FIT) (yes vs. no), transmission planning (anticipatory vs. reactive), and transmission interconnection cost allocated to a renewable generator (high vs. low). We find that market restructuring is not a primary driver of renewable energy development. Renewable generation has the highest percent of total installed capacity in markets that use a FIT, employ anticipatory transmission planning, and have loads or end-users paying for most, if not all, of the transmission interconnection costs. In contrast, renewable developers have been less successful in markets... Categories: Publication; Types: Citation; Tags: Mexico, Recent, energy, residential, trends, All tags... use, Fewer tags Catalogue of the literature assessing climate effects on ungulates in North America (1947-2020) This dataset contains information from 674 publications (academic and grey literature) that assessed the effects of climate variability and climate change on the 15 ungulate species that are native to the United States, Canada, Mexico, and Greenland. The publication contains literature published between 1947 and September 2020. Information documented includes study location, climate variables assessed, and ungulate outcomes measured (e.g., life history characteristics, population demographics, migratory behavior). Categories: Data, Publication; Types: Citation; Tags: Canada, Greenland, Mexico, North America, USGS Science Data Catalog (SDC), All tags... United States, biota, climate change, effects of climate change, none, Fewer tags Climate Change Vulnerability and Adaptation Strategies for Natural Communities NatureServe worked with several federal, state, and NGO partners in the United States and Mexico to conduct a climate change vulnerability assessment of major natural community types found within the Mojave and Sonoran Deserts. The project focused on ten major upland, riparian, and aquatic community types, including pinyon-juniper woodlands, Joshua tree-blackbrush scrub, creosote-bursage scrub, salt desert scrub, Paloverde-mixed cacti scrub, semi-desert grassland, desert riparian and stream, riparian mesquite bosque, and desert springs. This effort piloted a new Habitat Climate Change Vulnerability Index (HCCVI) approach being developed by NatureServe, as a companion to an existing index for species. The project... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arizona, BMP, Baja California, California, English, All tags... GIS, Mexico, Nevada, OHV, Sonora, US, Utah, agriculture, assessment, biodiversity, bird, climate, connectivity, contamination, development, ecoregion, energy, erosion, fire, fish, grassland, grazing, groundwater, invasive, invertebrate, mammal, management, map, mining, model, monitoring, plan, plant, priority, protected area, rare, recreation, renewable, reptile, research, resilience, restoration, riparian, river, road, scrub, shrub, soil, spring, stream, threat, vegetation, water, watershed, wildlife, Fewer tags Scrap and storage markets in the Gulf of Mexico-IV: Conceptual economic models A number of issues that relate analytic study of the climatic consequences of increasing anthropogenic release of greenhouse gases to environmental policy are raised. We discuss in particular the role of uncertainty of information in the context of the long term global and potentially massive nature of the threat. Some recommendations are made for new lines of study to determine the degree of urgency of the problem and the proximate need for remedial measures and the difficulties of their implementation. Categories: Publication; Types: Citation; Tags: ASSETS (Accounting), BUSINESS planning, COMMERCE, DECISION making, DISINVESTMENT, All tags... ECONOMIC models, Gulf of, MEXICO, PROPERTY, Fewer tags Plan Maestro de la Alianza Regional para la Conservación de los Pastizales del Desierto Chihuahuense 2011-2016 Resumen ejecutivo El objetivo del presente Plan Maestro de la Alianza Regional para la Conservación de Pastizales del Desierto Chihuahuense es brindar un marco de cooperación para la acción regional para los estados que integran el Desierto Chihuahuense. Como concepto rector de este documento se ha tomado el del desarrollo sustentable, es decir, se invita a explorar y abordar las vertientes sociales y económicas de toda actividad que tenga que ver con el manejo y uso de los pastizales como ecosistema natural y viceversa. Este documento está dividido en dos partes fundamentales. La primera ofrece una perspectiva continental y nacional sobre el Desierto Chihuahuense, su importancia ambiental, económica y social;... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, Mexico, Spanish, grassland, grazing, All tags... land cover, management, outreach, plan, priority, threat, Fewer tags Estrategia para la Conservación de los Pastizales del Desierto Chihuahuense (ECOPAD) RESUMEN En México y EUA, los pastizales del Desierto Chihuahuense han experimentado un gran deterioro desde mediados de 1800's. Ello se ha debido principalmente deficientes prácticas ganaderas, al cambio climático, la supresión del fuego, a la fragmentación de hábitat y cambio de uso de suelo. En conjunto, se ha provocado un incremento en los escurrimientos y la erosión, una disminución de la diversidad biológica y pérdida en las concentraciones de aves, incremento en la invasión de especies no nativas y una disminución en la cantidad de forraje para animales domésticos y silvestres. La Estrategia para la Conservación de los Pastizales de Desierto Chihuahuense (ECOPAD) ofrece un esquema de cooperación para enfrentar... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, Mexico, Spanish, agriculture, grassland, All tags... grazing, management, outreach, plan, threat, Fewer tags An Ecological Analysis of Conservation Priorities in the Sonoran Desert Ecoregion A bi-national team was convened in 1998 to compile and analyze biological and ecological data for the 55-million acre (22 million ha) Sonoran Desert Ecoregion, which comprises parts of Arizona, California, Sonora, and Baja, California. The objective of this project was to use a science-based approach to identify a network of Conservation Sites throughout the Ecoregion that, with proper management, would ensure the long-term persistence of the Ecoregion's biodiversity, including rare and common species, native vegetation communities, and the ecological processes needed to maintain these elements of biodiversity. The technical team convened to compile and analyze data included staff from The Nature Conservancy, Sonoran... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Mexico, Sonoran Desert, United States, ecoregion, ownership, All tags... plan, plant, priority, protected area, rare, threat, vegetation, wildlife, Fewer tags Just add water and the Colorado River still reaches the sea. A recent article in Environmental Management by All argued that flood flows in North America's Colorado River do not reach the Gulf of California because they are captured and evaporated in Laguna Salada, a below sea-level lakebed near the mouth of the river. We refute this hypothesis by showing that (1) due to its limited area, the Laguna Salada could have evaporated less than 10% of the flood flows that have occurred since 1989; (2) low flow volumes preferentially flow to the Gulf rather than Laguna Salada; (3) All's method for detecting water surface area in the Laguna Salada appears to be flawed because Landsat Thematic Mapper images of the lakebed show it to be dry when All's analyses said it was flooded; (4)... Categories: Publication; Types: Citation, Journal Citation; Tags: Environmental Management, Mexico, Penaeidae, United States, animals, All tags... disasters, mollusca, rivers, satellite communications, seawater, water movements, Fewer tags Screening evaluation of the ecological risks to terrestrial wildlife associated with a coal ash disposal site Between 1955 and 1989, coal ash was deposited within an impounded watershed on the U.S. Department of Energy's Oak Ridge Reservation in Tennessee, creating the 3.6 ha Filled Coal Ash Pond (FCAP). The site has subsequently become vegetated wildlife habitat. To evaluate risks that metals in ash may pose to wildlife; ash, surface water, small mammal, and vegetation samples were collected and metal residues were determined. Metal concentrations, As and Se in particular, were elevated in ash, surface water, plant foliage, and small mammals relative to reference materials. Estimates of metal exposures were calculated for short-tailed shrews, white-footed mice, white-tailed deer, red fox, and red-tailed hawks. While shrews... Categories: Publication; Types: Citation; Tags: ASSETS (Accounting), BUSINESS planning, COMMERCE, DECISION making, DISINVESTMENT, All tags... ECONOMIC models, Gulf of, MEXICO, PROPERTY, Fewer tags Publication and Report: Ecosystem Water Balance in a Desert Grassland ​Abstract: Climate change predictions include warming and drying trends, which are expected to be particularly pronounced in the southwestern United States. In this region, grassland dynamics are tightly linked to available moisture, yet it has proven difficult to resolve what aspects of climate drive vegetation change. In part, this is because it is unclear how heterogeneity in soils affects plant responses to climate. Here, we combine climate and soil properties with a mechanistic soil water model to explain temporal fluctuations in perennial grass cover, quantify where and the degree to which incorporating soil water dynamics enhances our ability to understand temporal patterns, and explore the potential consequences... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, AZ-02, AZ-03, AZ-04, Academics & scientific researchers, All tags... Applications and Tools, Arizona, Big Bend ‐ Río Bravo & Lower Río Conchos Pilot Area, CA-08, CO-03, California, Chihuahua, Chihuahuan Desert, Colorado Plateau, Conservation NGOs, Data.gov Desert LCC, Datasets/Database, Decision Support, EARTH SCIENCE > BIOSPHERE > VEGETATION, Federal resource managers, LCC Network Science Catalog, Mexico, Mojave Desert, Mojave Desert Pilot Area, NM-02, NV-03, NV-04, New Mexico, Population & Habitat Evaluation/Projection, Publication, Report, Sonora, Sonoran Desert, TX-16, TX-23, Transboundary Madrean Watersheds Pilot Area, UT-02, UT-03, United States, User Manual, Utah, Vulnerability Assessment, biota, climate change, completed, desert southwest, ecohydrology, plants, product, soil water, vegetation change, water availability, Fewer tags Understanding Environmental Flows in Desert Rivers of the U.S. and Mexico through the Desert Flows Database Article Introduction: Efforts to define water needs for riparian and aquatic ecosystems in arid and semi-arid systems are critical because riparian areas are essential for the survival of desert life, with stream corridors providing a large proportion of ecosystem services in these landscapes (Poff, Koestner, Neary, & Henderson, 2011; Millennium Ecosystem Assessment, 2005). To create a one-stop-shop for published ecological water needs information and illuminate critical knowledge gaps in the desert watersheds of the U.S. and Mexico, the University of Arizona’s Water Resources Research Center and the Northern Arizona University School of Earth Sciences and Environmental Sustainability created the Desert Flows Database.... Categories: Data, Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquascalientes, Arizona, Baja California, California, Chihuahua, All tags... Coahuila, Data Acquisition and Development, Data Management and Integration, Data.gov Desert LCC, Desert LCC (all), Desert Landscape Conservation Cooperative, Dos Rios Pilot Area, Durango, EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > RIVERS/STREAM, Eastern Mojave Desert Pilot Area, Federal resource managers, Guanajuato, Jalisco, LCC Network Science Catalog, Madrean Watersheds Pilot Area, Mexico, Nayarit, Nevada, New Mexico, Nuevo León, Publication, Querétaro, San Luis Potosi, Sinaloa, Sonora, Tamaulipas, Texas, United States, User Manual, Utah, Zacatecas, completed, inlandWaters, product, Fewer tags Revisiting a Classification Scheme for U.S.-Mexico Alluvial Basin-Fill Aquifers Intermontane basins in the Trans-Pecos region of westernmost Texas and northern Chihuahua, Mexico, are target areas for disposal of interstate municipal sludge and have been identified as possible disposal sites for low-level radioactive waste. Understanding ground water movement within and between these basins is needed to assess potential contaminant fate and movement. Four associated basin aquifers are evaluated and classified; the Red Light Draw Aquifer, the Northwest Eagle Flat Aquifer, the Southeast Eagle Flat Aquifer, and the El Cuervo Aquifer. Encompassed on all but one side by mountains and local divides, the Red Light Draw Aquifer has the Rio Grande as an outlet for both surface drainage and ground water... Categories: Publication; Types: Citation, Journal Citation; Tags: Classification, Geological Phenomena, Geology, Ground Water, Mexico, All tags... Models, Refuse Disposal, Sewage, Texas, Theoretical, Water Movements, Water Pollution, Water Pollution: prevention & control, Water Supply, Fewer tags Plan de Acción para la Conservación y Uso Sustentable de los Pastizales del Estado de Chihuahua 2011-2016 Executive Summary This Action Plan offers a reference framework—developed through stakeholder consensus—to align, articulate and implement grassland sustainable use and management actions in the State of Chihuahua. The overall goal is not only to help in making more sustainable the productive activities related to grasslands, but also to maintain and/or to restore their capacity to provide the environmental services vital to the Chihuahuan society (e.g., aquifer recharge, carbon sequestration and biodiversity). This document represents a first collaborative effort at a State level among producers, researchers and students all with the same goal: to care, to restore and sustainably use grasslands. Those who participated... Categories: Publication; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chihuahuan Desert, Mexico, Spanish, bird, grassland, All tags... land cover, management, plan, priority, threat, Fewer tags What has driven oil prices since 2000?: A structural change perspective This viewpoint reviews renewable energy development in 14 markets that differ in market structure (restructured vs. not restructured), use of feed-in-tariff (FIT) (yes vs. no), transmission planning (anticipatory vs. reactive), and transmission interconnection cost allocated to a renewable generator (high vs. low). We find that market restructuring is not a primary driver of renewable energy development. Renewable generation has the highest percent of total installed capacity in markets that use a FIT, employ anticipatory transmission planning, and have loads or end-users paying for most, if not all, of the transmission interconnection costs. In contrast, renewable developers have been less successful in markets... Categories: Publication; Types: Citation; Tags: Mexico, Recent, energy, residential, trends, All tags... use, Fewer tags