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Elimia Livescens
''Elimia livescens'', common name the liver elimia, is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pleuroceridae. Shell description The height of the shell of this species can be as large as 20 mm. Distribution ''Elimia livescens'' is native to the United States. It occurs in the Saint Lawrence River drainage from Great Lake to Lake Champlain; in tributaries of the Ohio River east of the Scioto River in Ohio; and in the Wabash River, west to the Illinois River. The nonindigenous distribution of ''Elimia livescens'' includes the lower Hudson River drainage. It migrated to the Hudson River via the Erie Canal. The impact of this introduction is unknown. Ecology Habitat This snail is found in freshwater rivers and streams, on rock shoals and gravel bars. Life cycle The sexes are separate. Eggs are usually laid in the spring. The snails often reach sexual maturity in a year, and can live for 5 years. Parasites Par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Theodor Menke
Karl Theodor Menke (13 September 1791 – 1861) was a German malacologist and balneologist who was a native of Bremen. He is remembered for his research on snails. Menke studied medicine at the University of Göttingen (with Promotion in 1814), and worked as a physician at the spa in Bad Pyrmont. In 1831 he was elected a member of the Academy of Sciences Leopoldina. In 1844 he founded the journal ''Zeitschrift für Malakozoologie'' (from 1854 titled ''Malakozoologische Blätter''). With Ludwig Karl Georg Pfeiffer (1805—1877), he was editor of the magazine. During his lifetime, Menke amassed a large collection of snail shells, which were purchased by dealer M.J. Landauer of Frankfurt after his death. The sea snail species; '' Cerithium menkei'' and '' Natica menkeana'' are named in honor of Menke. Also in 1843, '' Menkea'' a genus of flowering plants from Australia, belonging to the family Brassicaceae was published and named in his honour. Bibliography * Karl Theodor Menke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Lakes
The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes in the mid-east region of North America that connect to the Atlantic Ocean via the Saint Lawrence River. There are five lakes, which are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, Huron, Lake Erie, Erie, and Lake Ontario, Ontario and are in general on or near the Canada–United States border. Hydrologically, lakes Lake Michigan–Huron, Michigan and Huron are a single body joined at the Straits of Mackinac. The Great Lakes Waterway enables modern travel and shipping by water among the lakes. The Great Lakes are the largest group of freshwater lakes on Earth by total area and are second-largest by total volume, containing 21% of the world's surface fresh water by volume. The total surface is , and the total volume (measured at the low water datum) is , slightly less than the volume of Lake Baikal (, 22–23% of the world's surface fresh water ... [...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] |
Aspidogaster Conchicola
''Aspidogaster conchicola'' is a trematode parasite of the Aspidogastrea subclass that commonly infects freshwater clams. It has not been well studied since it is of little economic or medical importance, but ''A. conchicola'' and its fellow aspidogastreans are of significant biological importance since they may represent a step between free-living and parasitic organisms. Morphology ''A. conchicola'' has a large ventral opisthaptor that extends most of its body's length, which is divided into sections called alveoli or loculi. It also possesses a longitudinal septum, a horizontal layer of muscle and connective tissue that separates the dorsal and ventral compartments of the body. The tegument is similar to that of other parasitic flatworms. Life cycle ''Aspidogaster conchicola'' infects many species of freshwater bivalves belonging to several families, as well as freshwater snails, many species of freshwater fishes of several families, and freshwater tortoises. Hosts include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erie Canal
The Erie Canal is a historic canal in upstate New York that runs east-west between the Hudson River and Lake Erie. Completed in 1825, the canal was the first navigable waterway connecting the Atlantic Ocean to the Great Lakes, vastly reducing the costs of transporting people and goods across the Appalachians. In effect, the canal accelerated the settlement of the Great Lakes region, the westward expansion of the United States, and the economic ascendancy of New York State. It has been called "The Nation's First Superhighway." A canal from the Hudson to the Great Lakes was first proposed in the 1780s, but a formal survey was not conducted until 1808. The New York State Legislature authorized construction in 1817. Political opponents of the canal, and of its lead supporter New York Governor DeWitt Clinton, denigrated the project as "Clinton's Folly" and "Clinton's Big Ditch". Nonetheless, the canal saw quick success upon opening on October 26, 1825, with toll revenue covering the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hudson River
The Hudson River is a river that flows from north to south primarily through eastern New York. It originates in the Adirondack Mountains of Upstate New York and flows southward through the Hudson Valley to the New York Harbor between New York City and Jersey City, eventually draining into the Atlantic Ocean at Lower New York Bay. The river serves as a political boundary between the states of New Jersey and New York at its southern end. Farther north, it marks local boundaries between several New York counties. The lower half of the river is a tidal estuary, deeper than the body of water into which it flows, occupying the Hudson Fjord, an inlet which formed during the most recent period of North American glaciation, estimated at 26,000 to 13,300 years ago. Even as far north as the city of Troy, the flow of the river changes direction with the tides. The Hudson River runs through the Munsee, Lenape, Mohican, Mohawk, and Haudenosaunee homelands. Prior to European ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illinois River
The Illinois River ( mia, Inoka Siipiiwi) is a principal tributary of the Mississippi River and is approximately long. Located in the U.S. state of Illinois, it has a drainage basin of . The Illinois River begins at the confluence of the Des Plaines and Kankakee rivers in the Chicago metropolitan area, and it generally flows to the southwest across Illinois, until it empties into the Mississippi near Grafton, Illinois. Its drainage basin extends into southeastern Wisconsin, northwestern Indiana, and a very small area of southwestern Michigan in addition to central Illinois. Along it's shores are several ports, including Peoria, Illinois. The river was important among Native Americans and early French traders as the principal water route connecting the Great Lakes with the Mississippi. The French colonial settlements along these rivers formed the heart of the area known as the Illinois Country in the 17th and 18th centuries. After the construction of the Illinois and Mich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wabash River
The Wabash River ( French: Ouabache) is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 13, 2011 river that drains most of the state of Indiana in the United States. It flows from the headwaters in Ohio, near the Indiana border, then southwest across northern Indiana turning south near the Illinois border, where the southern portion forms the Indiana-Illinois border before flowing into the Ohio River. It is the largest northern tributary of the Ohio River and third largest overall, behind the Cumberland and Tennessee rivers. From the dam near Huntington, Indiana, to its terminus at the Ohio River, the Wabash flows freely for . Its watershed drains most of Indiana. The Tippecanoe River, White River, Embarras River and Little Wabash River are major tributaries. The river's name comes from a Miami word meaning "water over white stones", as its bottom is white limestone, now obscured by mud. The Wabash is the st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scioto River
The Scioto River ( ) is a river in central and southern Ohio more than in length. It rises in Hardin County just north of Roundhead, Ohio, flows through Columbus, Ohio, where it collects its largest tributary, the Olentangy River, and meets the Ohio River at Portsmouth. Early settlers and Native Americans used the river for shipping,"Scioto River – Ohio History Central" but it is now too small for modern commercial craft. The primary economic importance for the river now is for recreation and drinking water. It is the longest river that is entirely within Ohio. Geography and geology The lower Scioto River valley is large compared to the width of the river and is extensively farmed. Meltwaters from retreating glaciers carved the valley exceptionally wide. Valley bottoms are smooth, and flood deposits created during and since the most recent Glacial period cause floodplain soils to be very productive. As a result, farms line much of the lower Scioto where it flows through lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ohio River
The Ohio River is a long river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing southwesterly from western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illinois. It is the third largest river by discharge volume in the United States and the largest tributary by volume of the north-south flowing Mississippi River that divides the eastern from western United States. It is also the 6th oldest river on the North American continent. The river flows through or along the border of six states, and its drainage basin includes parts of 14 states. Through its largest tributary, the Tennessee River, the basin includes several states of the southeastern U.S. It is the source of drinking water for five million people. The lower Ohio River just below Louisville is obstructed by rapids known as the Falls of the Ohio where the elevation falls in restricting larger commercial navigation, although in the 18th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Champlain
, native_name_lang = , image = Champlainmap.svg , caption = Lake Champlain-River Richelieu watershed , image_bathymetry = , caption_bathymetry = , location = New York/Vermont in the United States; and Quebec in Canada , coords = , type = , inflow = Otter Creek, Winooski River, Missisquoi River, Poultney River, Lamoille River, Ausable River, Chazy River, Boquet River, Saranac River, La Chute River , outflow = Richelieu River , catchment = , basin_countries = Canada, United States , length = , width = , area = , depth = , max-depth = , volume = , residence_time = 3.3 years , shore = , elevation = , islands = 80 ( Grand Isle, North Hero, Isle La Motte, '' see list'') , cities = Burlington, Vermont; Plattsburgh, New York Lake Champlain ( ; french: Lac Champlain) is a natural freshwater lake in North America. It mostly lies between the US states of New York and Vermont, but also extends north into the Canadian province of Quebec. The New York portion of the Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Lawrence River
The St. Lawrence River (french: Fleuve Saint-Laurent, ) is a large river in the middle latitudes of North America. Its headwaters begin flowing from Lake Ontario in a (roughly) northeasterly direction, into the Gulf of St. Lawrence, connecting the American Great Lakes to the North Atlantic Ocean, and forming the primary drainage outflow of the Great Lakes Basin. The river traverses the Canadian provinces of Ontario and Quebec, as well as the U.S. state of New York, and demarcates part of the international boundary between Canada and the United States. It also provides the foundation for the commercial St. Lawrence Seaway. Names Originally known by a variety of names by local First Nations, the St. Lawrence became known in French as ''le fleuve Saint-Laurent'' (also spelled ''St-Laurent'') in 1604 by Samuel de Champlain. Opting for the ''grande riviere de sainct Laurens'' and ''fleuve sainct Laurens'' in his writings and on his maps, de Champlain supplanted previous Fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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