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John And Louise Seier National Wildlife Refuge
John and Louise Seier National Wildlife Refuge is located in the U.S. state of Nebraska and includes 2,400 acres (9.71 km2). The refuge protects a portion of the largest remaining area of tall and mid grass prairie remaining in the U.S. Collectively known as the Sand Hills region of Nebraska, the dunes were the result of the last ice age known as the Pinedale glaciation. During the Holocene glacial retreat the sand dunes that been deposited in their current location by the vast continental glaciers, were exposed and grasses eventually took over. The refuge is managed by the U.S. Fish and Wildlife Service and along with Fort Niobrara and Valentine National Wildlife Refuges, form the Fort Niobrara National Wildlife Refuge Complex. This is an undeveloped refuge that was donated by the siblings John and Louise Seier to the U.S. Government to be preserved for wildlife. The Seier family had homesteaded the lands in the mid-19th century. The refuge is part forest and par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock County, Nebraska
Rock County is a County (United States), county in the U.S. state of Nebraska. As of the 2020 United States census, the population was 1,262. Its county seat is Bassett, Nebraska, Bassett. In the Vehicle registration plates of Nebraska, Nebraska license plate system, Rock County is represented by the prefix 81 (it had the 81st-largest number of vehicles registered in the county when the license plate system was established in 1922). Geography The Niobrara River flows eastward along the northern boundary line of Rock County. The terrain is composed of rolling hills oriented east–west. The county's central portion is dotted with small lakes. The land sees comparatively little agricultural use. The ground slopes to the northeast. The county has a total area of , of which is land and (0.3%) is water. Rock County is located in Nebraska's Nebraska Outback, Outback region. Major highways * U.S. Route 20 in Nebraska, U.S. Highway 20 * U.S. Route 183 in Nebraska, U.S. Highway 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene Glacial Retreat
The Holocene glacial retreat is a geographical phenomenon that involved the global retreat of glaciers ( deglaciation) that previously had advanced during the Last Glacial Maximum. Ice sheet retreat initiated ca. 19,000 years ago and accelerated after ca. 15,000 years ago. The Holocene, starting with abrupt warming 11,700 years ago, resulted in rapid melting of the remaining ice sheets of North America and Europe. Geographical alterations Antarctica Radiocarbon dating has been used to date the start of glacial retreat on Alexander Island 18,000 years ago. The outermost locations like Marguerite Bay were fully deglaciated 12,000 years ago and the further inland locations continued deglaciating for an additional 3,000 years. The Larsen ice shelf was formed in the early Holocene at the latest estimation of 10,700 years ago. Certain segments of the ice shelf have collapsed as recently as 1995 for Larsen A and a large segment of Larsen B collapsed in 2002. Europe The many valley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Rock County, Nebraska
Protection is any measure taken to guard something against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage servi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Wildlife Refuges In Nebraska
National may refer to: Common uses * Nation or country ** Nationality – a ''national'' is a person who is subject to a nation, regardless of whether the person has full rights as a citizen Places in the United States * National, Maryland, census-designated place * National, Nevada, ghost town * National, Utah, ghost town * National, West Virginia, unincorporated community Commerce * National (brand), a brand name of electronic goods from Panasonic * National Benzole (or simply known as National), former petrol station chain in the UK, merged with BP * National Book Store, a bookstore and office supplies chain in the Philippines * National Car Rental, an American rental car company * National Energy Systems, a former name of Eco Marine Power * National Entertainment Commission, a former name of the Media Rating Council * National Motor Vehicle Company, Indianapolis, Indiana, USA 1900–1924 * National Radio Company, Malden, Massachusetts, USA 1914–1991 * National Supermarket ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially in the soils. Wetlands form a transitional zone between waterbodies and dry lands, and are different from other terrestrial or aquatic ecosystems due to their vegetation's roots having adapted to oxygen-poor waterlogged soils. They are considered among the most biologically diverse of all ecosystems, serving as habitats to a wide range of aquatic and semi-aquatic plants and animals, with often improved water quality due to plant removal of excess nutrients such as nitrates and phosphorus. Wetlands exist on every continent, except Antarctica. The water in wetlands is either freshwater, brackish or saltwater. The main types of wetland are defined based on the dominant plants and the source of the water. For example, ''marshes'' ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homestead Act
The Homestead Acts were several laws in the United States by which an applicant could acquire ownership of Federal lands, government land or the American frontier, public domain, typically called a Homestead (buildings), homestead. In all, more than of public land, or nearly 10 percent of the total area of the United States, were given away free to 1.6 million homesteaders; most of the homesteads were west of the Mississippi River. An extension of the homestead principle in law, the Homestead Acts were an expression of the Free Soil policy of Northern United States, Northerners who wanted individual farmers to own and operate their own farms, as opposed to Southern United States, Southern Slavery in the United States, slave owners who wanted to buy up large tracts of land and use slave labor, thereby shutting out free white farmers. For a number of years individual Congressmen put forward bills providing for homesteading, but it was not until 1862 that the first ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valentine National Wildlife Refuge
Valentine National Wildlife Refuge is located in the U.S. state of Nebraska and includes 19,131 acres (77.42 km2). The refuge protects a portion of the largest remaining area of tall and mid grass prairie in the United States. Development Collectively known as the sand hills region of Nebraska, the dunes were the result of the last ice age known as the Pinedale glaciation. During the Holocene glacial retreat the sand dunes that been deposited in their current location by the vast continental glaciers, were exposed and grasses eventually took over. Management The refuge is managed by the U.S. Fish and Wildlife Service and along with Fort Niobrara and John and Louise Seier National Wildlife Refuges, they form the Fort Niobrara National Wildlife Refuge Complex. In 1976, the Valentine National Wildlife Refuge was designated as a National Natural Landmark by the National Park Service. Natural features Numerous lakes and ponds are located on the refuge, fed by unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Niobrara National Wildlife Refuge
Fort Niobrara National Wildlife Refuge is located in the U.S. state of Nebraska and includes 19,131 acres (77.42 km2). The refuge borders the Niobrara National Scenic River on the west and is managed by the U.S. Fish and Wildlife Service. From 1879 to 1906, the Fort Niobrara Military Reservation was located on what later became refuge lands to house a garrison of the U.S. Cavalry. After the fort was closed, the effort to preserve the region as a wildlife refuge culminated in the creation of the refuge on January 11, 1912. The refuge also manages Valentine and John and Louise Seier National Wildlife Refuges as parts of the Fort Niobrara National Wildlife Refuge Complex. The reservation was created by Executive order in 1912: January 11, 1912. Niobrara Reservation. Embracing parts of townships thirty-three and thirty-four north, ranges twenty-six and twenty-seven west, Sixth Principal Meridian, Nebraska, the same being a part of the abandoned Fort Niobrara Militar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and greenhouse periods during which there are no glaciers on the planet. Earth is currently in the ice age called Quaternary glaciation. Individual pulses of cold climate within an ice age are termed '' glacial periods'' (''glacials, glaciations, glacial stages, stadials, stades'', or colloquially, ''ice ages''), and intermittent warm periods within an ice age are called '' interglacials'' or ''interstadials''. In glaciology, the term ''ice age'' is defined by the presence of extensive ice sheets in the northern and southern hemispheres. By this definition, the current Holocene epoch is an interglacial period of an ice age. The accumulation of anthropogenic greenhouse gases is projected to delay the next glacial period. History of research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sand Hills (Nebraska)
The Sandhills, often written Sand Hills, is a region of Mixed grass prairie, mixed-grass prairie on grass-stabilized sand dunes in north-central Nebraska, covering just over one quarter of the state. The dunes were designated a National Natural Landmark in 1984. Geography The boundaries of the Sandhills are variously defined by different organizations. Depending on the definition, the region's area can be as small as 19,600 mi2 (50,760 km2) or as large as 23,600 mi2 (61,100 km2). Dunes in the Sandhills may exceed 330 ft (100 m) in height. The average elevation of the region gradually increases from about 1,800 ft (550 m) in the east to about 3,600 ft (1,100 m) in the west. The Sandhills sit atop the massive Ogallala Aquifer; thus both temporary and permanent shallow lakes are common in low-lying valleys between the grass-stabilized dunes prevalent in the Sandhills. The eastern and central sections of the region are drained by tributaries of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
