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Río Abajo State Forest
Rio Abajo State Forest is a forest preserve in Puerto Rico owned by the Department of Natural Resources and one of the 20 state forests in the island. It was designated a National Natural Landmark in 1980 and constitutes an area of 3,590 acres. It consists mostly of subtropical wet and moist karst forest. Mogotes and sinkholes fill the landscape. The forest preserve is located in the municipalities of Arecibo and Utuado. In addition to its ecological value the forest also contains a number of archaeological sites. History Much of the development within the forest area was made by the Civilian Conservation Corps (CCC) during the 20th century. The forest preserve was one of the five designated forests designated in 1943 by the Puerto Rico Reconstruction Administration (Spanish: ''Administración de Reconstrucción de Puerto Rico'') to preserve the remaining forested areas in the island. This forest also protects a large portion of the Arecibo River hydrological basin. The re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utuado
Utuado () is a town and municipality of Puerto Rico located in the central mountainous region of the island known as the '' Cordillera Central''. It is located north of Adjuntas and Ponce; south of Hatillo and Arecibo; east of Lares; and west of Ciales and Jayuya. It is the third-largest municipality in land area in Puerto Rico (after Arecibo and Ponce). According to the 2020 US Census, the municipality has a population of 28,287 spread over 24 barrios and Utuado pueblo (the downtown area and the administrative center of the city). Utuado is the main municipality of the Utuado micropolitan statistical area and is part of the San Juan-Caguas-Fajardo Combined Statistical Area. Etymology and nicknames The name Utuado derives from the Taíno word ''otoao'', meaning ''between mountains'' (i.e. valley). The municipality is known as ''Ciudad del Viví'' (Viví City), derived from the Viví River which runs through Utuado: one river branch comes from Adjuntas and the other f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German in the late 19th century, which entered German much earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puerto Rican Broad-winged Hawk
The Puerto Rican broad-winged hawk (''Buteo platypterus brunnescens'') is an endangered subspecies of the broad-winged hawk (''B. platypterus''). It is a small hawk that occurs in Puerto Rico, inhabiting the Toro Negro State Forest.''Bosques de Puerto Rico: Bosque Estatal de Toro Negro.'' Hojas de Nuestro Ambiente. July 2008. ublication/Issue: P-030Puerto Rico Department of Natural and Environmental Resources. Retrieved 12 September 2013. Its common name is ''guaragüao de bosqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Image Large1
An image is a visual representation of something. It can be two-dimensional, three-dimensional, or somehow otherwise feed into the visual system to convey information. An image can be an artifact, such as a photograph or other two-dimensional picture, that resembles a subject. In the context of signal processing, an image is a distributed amplitude of color(s). In optics, the term “image” may refer specifically to a 2D image. An image does not have to use the entire visual system to be a visual representation. A popular example of this is of a greyscale image, which uses the visual system's sensitivity to brightness across all wavelengths, without taking into account different colors. A black and white visual representation of something is still an image, even though it does not make full use of the visual system's capabilities. Images are typically still, but in some cases can be moving or animated. Characteristics Images may be two or three-dimensional, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene–Oligocene Extinction Event
The Eocene–Oligocene extinction event, also called the Eocene-Oligocene transition or ''Grande Coupure'', is the transition between the end of the Eocene and the beginning of the Oligocene, an extinction event and faunal turnover occurring between 33.9 and 33.4 million years ago marked by large-scale extinction and floral and faunal turnover (although minor in comparison to the largest mass extinctions). Most of the affected organisms were marine or aquatic in nature. They included the last of the ancient ungulates, the "condylarths". This was a time of major climatic change, especially cooling, not clearly caused by any single major impact or volcanic event. Extended volcanic activity is one possible cause. Another speculation points to several large meteorite impacts near this time, including those of the Chesapeake Bay crater and the Popigai impact structure of central Siberia, which scattered debris perhaps as far as Europe. New dating of the Popigai meteor strengthens it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mogote
A mogote () is a generally-isolated steep-sided residual hill in the tropics composed of either limestone, marble, or dolomite. Mogotes are surrounded by nearly flat alluvial plains. The hills typically have a rounded, tower-like form. Overview This term is used for hills, isolated or linked, with very steep, almost vertical, walls, surrounded by alluvial plains in the tropics, regardless of whether the carbonate strata in which they have formed are folded or not.Neuendorf, K. K. E., J. P. Mehl, Jr., and J. A. Jackson, 2005, ''Glossary of Geology'', 5th ed. American Geological Institute, Alexandria, Virginia. 779 p. U.S. Environmental Protection Agency, 2002, ''A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology (2002 Edition)''. U.S. Environmental Protection Agency, Office of Research and Development, National Center for Environmental Assessment, Washington Office, Washington, D.C., EPA/600/R-02/003. 221 p. Mogotes are common in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Karst (Puerto Rico)
The Northern Karst (Spanish: ''Carso norteño'', ''Carso norte'') is a limestone karst landscape located in the northern part of Puerto Rico. A karst is a topographical zone formed by the dissolution of soluble porous rocks, such as limestone, with features such as mogotes, canyons, caves, sinkholes, streams and rivers, all of which are common on this region of the island. Some of the island's main rivers, including its longest ( La Plata River), traverse the karst and form some of the most distinctive Puerto Rican geographical features such as the Camuy caverns. Many of these rivers feed into and are important in the formation of many marshy areas such as the Caño Tiburones wetlands. Notable features Mogotes A mogote (English: /məˈɡoʊti/, Spanish: /moˈgote/) is an isolated hill with steep, almost vertical, walls that are completely or partially surrounded by alluvial plains. These hills are a characteristic feature of northern Puerto Rico and they can be seen along t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cibao Marl
The Cibao Marl is a geologic formation in Puerto Rico. It preserves fossils dating back to the Neogene period. See also * List of fossiliferous stratigraphic units in Puerto Rico The Paleobiology Database lists no known fossiliferous stratigraphic units in Dominica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines. The database also records no fossiliferous stratigraphic units within several regions of t ... References * Neogene Puerto Rico Geologic formations of Puerto Rico {{PuertoRico-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Río Abajo, Utuado, Puerto Rico
Río Abajo is a barrio in the municipality of Utuado, Puerto Rico. Its population in 2010 was 237. It is an isolated, rural barrio in the Cordillera Central (Puerto Rico), the mountain range that goes east to west across the center of Puerto Rico. History Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became an unincorporated territory of the United States. In 1899, the United States Department of War conducted a census of Puerto Rico finding that the population of Río Abajo barrio was 1,235. Hurricane Maria which struck Puerto Rico on September 20, 2017, washed away the Río Abajo bridge and approximately 60 families were left isolated. Residents invented a zip line to bring food across until a temporary bridge was built. The construction of a permanent bridge was completed in March 2018. See also * List of communities in Puerto Rico In Puerto Rico, there are 78 municipalities and 902 munici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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