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Marshall McDonald
Marshall McDonald (October 18, 1835 – September 1, 1895) was an American engineer, geologist, mineralogist, pisciculturist, and fisheries scientist. McDonald served as the commissioner of the United States Commission of Fish and Fisheries from 1888 until his death in 1895. He is best known for his inventions of a number of fish hatching apparatuses and a fish ladder that enabled salmon and other migrating fish species to ascend the rapids of watercourses resulting in an increased spawning ground. McDonald's administration of the U.S. Commission of Fish and Fisheries was notably free of scandal and furthered the "protection and culture" of fish species throughout the United States. Born in 1835 in Romney, Virginia (present-day West Virginia), McDonald was the son of Angus William McDonald, a military officer and lawyer, and his wife, Leacy Anne Naylor. From 1854 to 1855, McDonald studied natural history under Spencer Fullerton Baird at the Smithsonian Institution in Was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Fish Commission
The United States Fish Commission, formally known as the United States Commission of Fish and Fisheries, was an agency of the United States government created in 1871 to investigate, promote, and preserve the fisheries of the United States. In 1903, it was reorganized as the United States Bureau of Fisheries, sometimes referred to as the United States Fisheries Service, which operated until 1940. In 1940, the Bureau of Fisheries was abolished when its personnel and facilities became part of the newly created Fish and Wildlife Service, under the United States Department of the Interior. Organizational history U.S. Fish Commission (1871–1903) By the 1860s, increasing human pressure on the fish and game resources of the United States had become apparent to the United States Government, and fisheries became the first aspect of the problem to receive U.S. Government attention when Robert Barnwell Roosevelt, a Democratic congressmen from New Yorks 4th Congressional District, ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geologist
A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, although backgrounds in physics, chemistry, biology, and other sciences are also useful. Field research (field work) is an important component of geology, although many subdisciplines incorporate laboratory and digitalized work. Geologists can be classified in a larger group of scientists, called geoscientists. Geologists work in the energy and mining sectors searching for natural resources such as petroleum, natural gas, precious and base metals. They are also in the forefront of preventing and mitigating damage from natural hazards and disasters such as earthquakes, volcanoes, tsunamis and landslides. Their studies are used to warn the general public of the occurrence of these events. Geologists are also important contributors to climate chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salmon
Salmon () is the common name for several commercially important species of euryhaline ray-finned fish from the family Salmonidae, which are native to tributaries of the North Atlantic (genus ''Salmo'') and North Pacific (genus '' Oncorhynchus'') basin. Other closely related fish in the same family include trout, char, grayling, whitefish, lenok and taimen. Salmon are typically anadromous: they hatch in the gravel beds of shallow fresh water streams, migrate to the ocean as adults and live like sea fish, then return to fresh water to reproduce. However, populations of several species are restricted to fresh water throughout their lives. Folklore has it that the fish return to the exact spot where they hatched to spawn, and tracking studies have shown this to be mostly true. A portion of a returning salmon run may stray and spawn in different freshwater systems; the percent of straying depends on the species of salmon. Homing behavior has been shown to depend on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Ladder
A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps (hence the term ''ladder'') into the waters on the other side. The velocity of water falling over the steps has to be great enough to attract the fish to the ladder, but it cannot be so great that it washes fish back downstream or exhausts them to the point of inability to continue their journey upriver. History Written reports of rough fishways date to 17th-century France, where bundles of branches were used to make steps in steep channels to bypass obstructions. A pool and weir salmon ladder was built around 1830 by James Smith, a Scottish engineer on the River Teith, near Deanston, Perths ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Hatchery
A fish hatchery is a place for artificial breeding, hatching, and rearing through the early life stages of animals—finfish and shellfish in particular.Crespi V., Coche A. (2008) Food and Agriculture Organization of the United Nations (FAO) Glossary of Aquacultur/ref> Hatcheries produce Fish larva, larval and juvenile fish, shellfish, and crustaceans, primarily to support the aquaculture industry where they are transferred to on-growing systems, such as fish farms, to reach harvest size. Some species that are commonly raised in hatcheries include Pacific oysters, shrimp, Indian prawns, salmon, tilapia and scallops. The value of global aquaculture farming is estimated to be US$98.4 billion in 2008 with China significantly dominating the market; however, the value of aquaculture hatchery and nursery production has yet to be estimated. Additional hatchery production for small-scale domestic uses, which is particularly prevalent in South-East Asia or for conservation programmes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commissioner
A commissioner (commonly abbreviated as Comm'r) is, in principle, a member of a commission or an individual who has been given a commission (official charge or authority to do something). In practice, the title of commissioner has evolved to include a variety of senior officials, often sitting on a specific commission. In particular, the commissioner frequently refers to senior police or government officials. A high commissioner is equivalent to an ambassador, originally between the United Kingdom and the Dominions and now between all Commonwealth states, whether Commonwealth realms, republics or countries having a monarch other than that of the realms. The title is sometimes given to senior officials in the private sector; for instance, many North American sports leagues. There is some confusion between commissioners and commissaries because other European languages use the same word for both. Therefore titles such as ''commissaire'' in French, ''Kommissar'' in German and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineer
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professional pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angus McDonald (United States Army Major)
Angus McDonald (December 30, 1769 – October 14, 1814) was an American Officer (armed forces), military officer, landowner, and sowing, planter in the U.S. state of Virginia. McDonald served as a military officer during the War of 1812 following his appointment by President of the United States, United States President James Madison. McDonald was the son of Virginia military officer and frontiersman Colonel (United States), Colonel Angus McDonald (Virginia militiaman), Angus McDonald and the father of Colonel Angus William McDonald, a commander in the Confederate States Army during the American Civil War. Early life Angus McDonald was born on December 30, 1769, at "Glengarry" near Winchester, Virginia, Winchester, Frederick County, Virginia, Frederick County in the Colony of Virginia. He was the third child and second-eldest son of prominent Virginia militiaman, frontiersman, and landowner Angus McDonald (Virginia militiaman), Angus McDonald and his wife, Anna Thompson McDonald. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angus McDonald (Virginia Militiaman)
Angus McDonald (1727 – August 19, 1778) was a prominent Scottish American Officer (armed forces), military officer, frontiersman, Sheriffs in the United States, sheriff and landowner in Virginia. During the Jacobite rising of 1745, McDonald fought as a Lieutenant (British Army and Royal Marines), lieutenant under the command of Charles Edward Stuart in the Battle of Culloden, after which he was "attainted of treason". He fled Scotland, departing from Inverness for the Colony of Virginia in 1746 at the age of 18. Following his arrival in Virginia, McDonald worked as a merchant in Falmouth, Virginia, Falmouth for two or three years. McDonald moved west into Virginia's interior and entered the military service of the colonial government under List of colonial governors of Virginia, Lieutenant Governor Robert Dinwiddie, receiving the Military rank, rank of Captain (British Army and Royal Marines), captain. McDonald served in the French and Indian War under Brigadier-general (Unite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Episcopal Church (United States)
The Episcopal Church, based in the United States with additional dioceses elsewhere, is a member church of the worldwide Anglican Communion. It is a mainline Protestant denomination and is divided into nine provinces. The presiding bishop of the Episcopal Church is Michael Bruce Curry, the first African-American bishop to serve in that position. As of 2022, the Episcopal Church had 1,678,157 members, of whom the majority were in the United States. it was the nation's 14th largest denomination. Note: The number of members given here is the total number of baptized members in 2012 (cf. Baptized Members by Province and Diocese 2002–2013). Pew Research estimated that 1.2 percent of the adult population in the United States, or 3 million people, self-identify as mainline Episcopalians. The church has recorded a regular decline in membership and Sunday attendance since the 1960s, particularly in the Northeast and Upper Midwest. The church was organized after the Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angus William McDonald
Angus William McDonald (February 14, 1799 – December 1, 1864) was a 19th-century American Officer (armed forces), military officer and lawyer in the U.S. state of Virginia. He also served as a Colonel (United States), colonel in command of the Confederate States Army's 7th Virginia Cavalry during the American Civil War. McDonald was appointed to serve in a number of prominent political positions including a Superintendent (construction), superintendent overseeing the construction of the Northwestern Turnpike and a commissioner representing Virginia in its boundary dispute with Maryland. McDonald was the grandson of Virginia military officer and wikt:frontiersman, frontiersman, Angus McDonald (Virginia militiaman), Angus McDonald (1727–1778) and the father of United States Fish Commissioner Marshall McDonald (1835–1895). Early life and education Angus William McDonald was born on February 14, 1799, in Winchester, Virginia, Winchester, Virginia. He was the eldest child of pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
