Entry Category: Science and Technology - Starting with I

The Ictaluridae is a family of North American native fishes belonging to the Class Siluriformes. The Ictaluridae family also belongs to the Superorder Ostariophysi, the second-largest superorder of fish. This diverse group, present on all continents except Antarctica, contains 10,758 species—more than twenty-eight percent of known fish species in the world and seventy-two percent of all freshwater species. The family proper includes about seven genera and fifty-one species, some commonly known as bullheads, catfishes, and madtoms. As such, it is the largest family of freshwater fishes endemic to North America. In Arkansas, they are easily recognized as the only fishes in the state with four pairs (two on the snout, two on the end of maxillae, and four on the …

Information Galore, Inc., (a.k.a. Infogo) of El Dorado (Union County) was the first commercial Internet service provider (ISP) in Arkansas. Although the company was short-lived, it had a notable impact upon economic and educational initiatives in southern Arkansas, as well as parts of Texas and Louisiana. Infogo was founded by six individuals. John Gray was a world-famous geologist who was appointed to serve on the Arkansas Geological Commission (now Arkansas Geological Survey) several times by Governor Bill Clinton and who did work for the United Nations. Gray, along with Watt McKinney, Leon Wood, William L. (Billy) Cook, and Robert McKinney each invested $5,000. Joe Brazeal was a board member of ARKnet, the state’s educational computer network, and provided technical expertise …

Insects account for over half of all species described thus far worldwide, and they are the dominant form of life in terrestrial environments. It is estimated that 35,000 to 40,000 species of insects live in Arkansas, including around 10,000 species of beetles, around 9,000 species of flies, nearly 8,000 species of bees and wasps, and around 5,000 species of moths and butterflies. The remainder make up small orders such as the bristletails, mayflies, dragonflies and damselflies, cockroaches, mantids, termites, stoneflies, grasshoppers and crickets, earwigs, stick insects, book and bark lice, chewing and sucking lice, and true bugs and lacewings and their relatives. It is still not uncommon to find species in Arkansas that are unnamed and new to the scientific …

The Instructional Microcomputer Project for Arkansas Classrooms (IMPAC) was an innovative program that helped make emerging microcomputer technologies a key component of education in Arkansas. Influential across the nation, IMPAC was cited for excellence by Electronic Learning, Instructor Magazine, Pro Education, Information Week, the National Governors Association, the Congressional Office of Technology Assessment, Nelson B. Heller & Associates, and the Southwest Education Development Laboratory. A number of Arkansas educators made significant efforts in laying a foundation for the use of microcomputers in instruction, as well as providing for technical support and workshops for teachers and school administrators, K–12. New technologies of the 1980s included networking microcomputers, the progression toward online resources, computer-assisted instruction and multimedia, and instructional management software for …

An “invasive species” is defined as a species that is non-native (or alien) to the ecosystem under consideration and whose introduction causes or is likely to cause economic or environmental problems or harm to human health. It typically matures and reproduces quickly and increases its geographic range rapidly, establishing populations and persisting over large areas. There are several reasons for this spread, including favorable environmental conditions and lack of natural predators, competitors, and diseases that normally regulate their populations, allowing invasive species to thrive. Invasive biota not only includes a variety of plants but also incorporates a wide variety of invertebrates and higher taxa from their native sites. As invasive species extend and dominate ecosystems, they invariably reduce native biodiversity …

According to the U.S. Department of Agriculture (USDA) Forest Service, an invasive species is “a species that is non-native or alien to the ecosystem under consideration and whose introduction does or is likely to cause economic or environmental harm or harm to human health.” As such, there are a suite of negative effects from exotic plant species that include replacing rare and endangered species, hybridizing and competing with native species, killing trees and shrubs, altering hydrological patterns and stream function, preventing forest regeneration, possibly containing toxins that may be lethal to certain animals, changing fire patterns, and harboring pathogens. The cost to control invasive species and the damages they cause to property and natural resources in the United States is …

Shortly after experimental forests were authorized for the U.S. Forest Service (USFS)—an agency of the U.S. Department of Agriculture (USDA)—by the McSweeney-McNary Forest Research Act of 1928, the Ouachita National Forest (ONF) reached out to the USFS’s Southern Forest Experiment Station (SFES). The ONF staff members wanted the SFES to develop an experimental forest to help them learn about managing the shortleaf pine (Pinus echinata)–dominated forests of the Ouachita Mountains in Arkansas. In early 1931, the SFES dispatched a three-man crew to examine possible locations on the ONF, but they did not find any areas they thought were suitable for silvicultural research. The ONF and the USFS’s Washington DC office persisted, and a few years later the SFES suggested an experimental forest on a large tract of virgin and cutover timber along the Irons Fork …

Long believed to be extinct, the ivory-billed woodpecker (Campephilus principalis) was apparently rediscovered in the Big Woods of east Arkansas in 2004. More than sixty years after the last confirmed sighting in the United States, a research team announced on April 28, 2005, that at least one male ivory-bill survived in the vast bottomland swamp forest. Published in the journal Science, the findings included multiple sightings of the elusive woodpecker and frame-by-frame analyses of brief video footage. The evidence was gathered during an intensive year-long search in the Cache River and White River National Wildlife Refuges in eastern Arkansas, involving more than fifty experts and field biologists working as part of the Big Woods Conservation Partnership, led by the Cornell …

A tornado tore through north-central Arkansas on November 21, 1883, killing around eleven people, injuring dozens, and devastating Melbourne (Izard County) and LaCrosse (Izard County). The storm’s path started about a mile and a half southwest of Melbourne and moved to the northeast, the width of its devastation ranging from 200 yards to three-quarters of a mile wide. When it reached the Izard County seat of Melbourne at around 4:00 a.m., most people were in bed. A newspaper reported that “for five minutes nothing could be heard but the roar of the winds, the crash of falling buildings, drowning the shrieks of the terrified inhabitants.” The home of former sheriff and Melbourne merchant and cotton buyer John Hinkle, located two …