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Chisos Mountains
The Chisos Mountains, also known as the Chisos, are a mountain range located in the Big Bend area of the Trans-Pecos region of Texas, United States. The mountain system covers 40 square miles (104 square km) and is contained entirely within the boundaries of Big Bend National Park, making it the only mountain range in the United States fully contained within a national park. The Chisos Mountains are the southernmost mountain range in the mainland United States. The Chisos Mountains were created by volcanic activity during the Eocene Epoch 35-44 million years ago. The highest point in the Chisos Mountain range is Emory Peak at above sea level. Location The Chisos Mountains are located in Big Bend National Park. The range of mountains extends twenty miles from Punta de la Sierra in the southwest to Panther Junction in the northeast. An extensive trail system and permit-required backcountry campsites are maintained by Big Bend National Park for its visitors. The Northeast Rim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emory Peak
Emory Peak, located in Big Bend National Park, is the highest peak in the Chisos Mountains and the highest in Brewster County. The peak is named for William H. Emory, the chief surveyor of the U.S. Boundary Survey team of 1852. From the Chisos Basin the peak appears to be a minor ridge, while the summit of Casa Grande, one mile closer, seems to be much taller. From the west, Emory Peak is clearly visible as a point slightly higher than most of the mountain range. The peak can be reached by a moderate hike on a well-marked path across steep rocky terrain with an elevation gain of approximately . The Emory Peak Trail is about long. The trail is reached by climbing the Pinnacles Trail from the Chisos Basin trailhead. Once at the base there is a semi-technical rock scramble to navigate before reaching the summit. No gear is needed for this climb although hikers should take great care. High-desert flora and fauna including alligator juniper (''Juniperus deppeana''), pinyon pine ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desert Research Institute
Desert Research Institute (DRI) is the nonprofit research campus of the Nevada System of Higher Education (NSHE), the organization that oversees all publicly supported higher education in the U.S. state of Nevada. At DRI, approximately 460 research faculty and support staff engage in $43 million in sponsored research each year. DRI's environmental research programs are divided into three core divisions (Atmospheric Sciences, Earth and Ecosystem Sciences, and Hydrologic Sciences) and a robust K-12 STEM education program. Established in 1988, the institute's Nevada Medal awards "outstanding achievement in science and engineering". Programs Atmospheric sciences The DRI Atmospheric Modeling group implements a full suite of numerical models of the atmosphere and climate including fine-scale computational fluid dynamics codes, Lagrangian particle models, chemical transport models, medium-resolution regional weather and climate models, and fully coupled ocean-atmospheric global climate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Brewster County, Texas
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, and plains are the fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological Survey
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Madre Oriental Pine–oak Forests
The Sierra Madre Oriental pine–oak forests are a Temperate broadleaf and mixed forests ecoregion of northeastern and Central Mexico, extending into the state of Texas in the United States. Setting The Sierra Madre Oriental pine–oak forests are found at elevations of above sea level in the Sierra Madre Oriental range, which runs north and south between the Gulf Coast of Mexico, Gulf Coastal Plain to the east along the Gulf of Mexico, and the Mexican Plateau to the west. They are also found in the Sierra Norte de Puebla, adjacent to the southern Sierra Madre Oriental. The ecoregion covers an area of . The southernmost forests transition to the Trans-Mexican Volcanic Belt pine–oak forests in central Puebla state, near the southern end of the Sierra Madre Oriental. The forests extend almost continuously along the range through the states of Veracruz, Hidalgo (Mexico), Hidalgo, Querétaro, Guanajuato, San Luis Potosí, Tamaulipas, Nuevo León, and northern Puebla. North of Monte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Big Bend (Texas)
__NOTOC__ The Big Bend is part of the Trans-Pecos region in southwestern Texas, United States along the border with Mexico, north of the prominent bend in the Rio Grande for which the region is named. Here the Rio Grande passes between the Chisos Mountains in Texas and the Sierra Madre Oriental in Mexico as it changes from running east-southeast to north-northeast. The region covers three counties: Presidio County to the west, Brewster County to the east, and Jeff Davis County to the north. The region is rugged, sparsely populated Chihuahua Desert, including the Chisos Mountains, Chinati Mountains, and the Davis Mountains. The region has well over of public lands, including Big Bend National Park (801,163 acres) and Big Bend Ranch State Park (300,000 acres), Black Gap Wildlife Management Area (103,000 acres),Texas Parks and WildlifeBlack Gap Wildlife Management Area(accessed Oct 30, 2022) Chinati Mountains State Natural Area (39,000 acres)Texas Parks and Wildlife,hinati M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beach Mountains
The Beach Mountains are located on privately owned land roughly north of Van Horn in southwestern Culberson County, Texas. The maximum elevation reached is above sea level. The Beach Mountains occupy a roughly circular area with a diameter of approximately , rising above the surrounding desert. Narrow passes separate the Beach Mountains from the Baylor Mountains to the north and the much larger Sierra Diablo range to the northwest. Geology The Beach mountain range is one of multiple isolated mountain ranges that populate Trans-Pecos Texas. Other nearby ranges include the Sierra Diablo, Baylor, Apache, Carrizo, Wylie, Eagle, and Van Horn mountains. Although these isolated ranges may share some common characteristics, their underlying geology can vary significantly. The Beach Mountains are erosional remnants of Ordovician and Cambrian sedimentary rocks laid down from 541 to 444 million years ago. Along their western margins, a highly intermittent stream called Hackberry Creek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myrmecology
Myrmecology (; from Greek: μύρμηξ, ''myrmex'', "ant" and λόγος, ''logos'', "study") is a branch of entomology focusing on the scientific study of ants. Some early myrmecologists considered ant society as the ideal form of society and sought to find solutions to human problems by studying them. Ants continue to be a model of choice for the study of questions on the evolution of social systems because of their complex and varied forms of eusociality (social organization). Their diversity and prominence in ecosystems also has made them important components in the study of biodiversity and conservation. Recently, ant colonies are also studied and modeled for their relevance in machine learning, complex interactive networks, stochasticity of encounter and interaction networks, parallel computing, and other computing fields. History The word myrmecology was coined by William Morton Wheeler (1865–1937), although human interest in the life of ants goes back further, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Association (ecology)
In phytosociology and community ecology an association is a type of ecological community with a predictable species composition and consistent physiognomy (structural appearance) which occurs in a particular habitat type. The term was first coined by Alexander von Humboldt and formalised by the International Botanical Congress in 1910. An association can be viewed as a real, integrated entity shaped either by species interactions or by similar habitat requirements, or it can be viewed as merely a common point along a continuum. The former view was championed by American ecologist Frederic Clements, who viewed the association as a whole that was more than the sum of its parts, and by Josias Braun-Blanquet, a Swiss-born phytosociologist. On the other end of the argument was American ecologist Henry Gleason, who saw these groupings of plant species as a coincidence produced by the "fluctuation and fortuitous immigration of plants, and an equally fluctuating and variable environment". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ornithology
Ornithology is a branch of zoology that concerns the "methodological study and consequent knowledge of birds with all that relates to them." Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. It has also been an area with a large contribution made by amateurs in terms of time, resources, and financial support. Studies on birds have helped develop key concepts in biology including evolution, behaviour and ecology such as the definition of species, the process of speciation, instinct, learning, ecological niches, guilds, island biogeography, phylogeography, and conservation. While early ornithology was principally concerned with descriptions and distributions of species, ornithologists today seek answers to very specific questions, often using birds as models to test hypotheses or predictions based on theories. Most modern biological theories apply across life forms, and the number of scientists w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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