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Topic: Orinoco River


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In the News (Tue 29 Dec 09)

  
  Orinoco - LoveToKnow 1911
ORINOCO, a river in the north of South America, falling north-east into the Atlantic between 60° 20' and 62° 30' W. It is approximately 1500 m.
Between the Guaviare and the Meta the Orinoco is obstructed by the famous Maipures cataract, where, in several channels, it breaks.
The Boca Grande outlet is the deepest, and is the main navigable entrance to the Orinoco at all seasons, the muddy bar usually maintaining a depth of 16 ft.
www.1911encyclopedia.org /Orinoco   (1534 words)

  
 Orinoco - Wikipedia, the free encyclopedia
The Orinoco is one of the longest rivers in South America at 2,410 km, (1,497.5 miles).
The delta of the Orinoco, and tributaries in the eastern llanos such as the Apure and Meta, were explored in the 16th Century by German expeditions under Ambrosius Ehinger and his successors.
The Orinoco course describes a wide ellipsoidal arc, surrounding the Guiana Shield; it is divided in four stretches of unequal length that roughly correspond to the longitudinal zonation of a typical large river:
en.wikipedia.org /wiki/Orinoco_River   (1003 words)

  
 Orinoco - HighBeam Encyclopedia   (Site not responding. Last check: 2007-11-03)
Orinoco, river of Venezuela, estimated to be from 1,500 to 1,700 mi (2,410-2,735 km) long.
One of South America's longest rivers, it and its branches drain an extensive basin; the Apure River is its chief tributary.
Structure of fish assemblages along environmental gradients in floodplain lakes of the Orinoco River.
www.encyclopedia.com /doc/1E1-orinoco.html   (489 words)

  
 Orinoco   (Site not responding. Last check: 2007-11-03)
The river channel is extremely complex and numerous small tributaries enter the main river (Figure 73).
The average annual river discharge is 28,857 cu m/sec with a maximum of 58,822 cu m/sec (September) and a minimum of 5,641 cu m/sec (March).
The Orinoco delta is a vast mosaic of interdistributary swamps and marshes encased by distributary and tidal channels (Bureau Economic Geology, Univ. Texas; http://www.beg.utexas.edu/geoenvirn/orinoco/summary/main/basic.htm.
www.geol.lsu.edu /WDD/S_AMERICAN/Orinoco/orinoco.htm   (531 words)

  
 WWF Global 200 Ecoregions -- Orinoco River and Flooded Forests (148)
The Orinoco River and Flooded Forests ecoregion contains a rich diversity of freshwater fish and several habitat types that are rare worldwide.
The waters of this ecosystem spill over the banks of the Orinoco River into one of the largest tracts of seasonally innundated forest in the world and provide important nutrients to the forested floodplains.
Orinoco crocodiles are native to the ecoregion, but some have been seen hundreds of miles further north, as far away as Trinidad.
www.worldwildlife.org /wildworld/profiles/g200/g148.html   (408 words)

  
 Miami Museum of Sciene - The Orinoco River
The first explorers of the Orinoco River were not Europeans but the Yekwana, who live near the upper Orinoco.
He sailed up the Orinoco River and named the land Venezuela, which means "Little Venice." Another early explorer, Diego de Ordaz, led an expedition of 200 men as far as the Meta River.
This group claimed to be the first to find the origin of the Orinoco at an altitude of 3,500 feet (1,067 meters), although it is said that Apolinar Díaz de la Fuente reached the same point about 200 years earlier.
www.miamisci.org /orinoco/explorers.html   (366 words)

  
 Young Water Action Team | Knowledge Base | River Basins Report: Orinoco River
One of the rivers investigated in this scope is the river Orinoco.
The river is a rain river, which means that the level of the rivers depth is specified by the amount of precipitation that falls in the riverbasin.
Unfortunately the river is being threatened by the activities of oil companies, which are drilling for oil in the riverbasin.
www.ywat.org /knowledgebase/riverbasins/sa-orinoco.html   (559 words)

  
 Ciudad Bolivar in the narrowness of the Orinoco River - UNESCO World Heritage Centre
Ciudad Bolivar in the narrowness of the Orinoco River
The predominant species of the flood area of the river and the lagoons are the “muela de gallina” (Pithecellobium tortum), “arestin” (Sweet pellita), “chaparro de agua” (cinerea Cupania and Davilla kunthii), caramacate”” (Trichilia sp.), “guatero” (Gustavia augusta), “bora” (Eichhornia crassipes), “mata palo” (Ficus ssp.), “juncos” (Eleocharis ssp.) and “corocillos” (Cyperus ssp.).
The importance of Ciudad Bolívar and the narrowness of the Orinoco River in terms of the indigenous presence are not limited to the symbolic appropriations.
whc.unesco.org /en/tentativelists/1804   (2346 words)

  
 orinoco river fishing - Amazon River swicki - powered by eurekster
The third-longest river in South America, the Orinoco is between 1,500 to 1,700...
river is at its highest from the annual rains in July and August,...
Fishing for peacock bass on the shores of the Orinoco River.
amazon-river-swicki.eurekster.com /orinoco+river+fishing   (331 words)

  
 Animal Info - Boto (Amazon River Dolphin)
In large white water rivers, most of its activity seems to be directed swimming, as though the animals were transiting between patches of the preferred microhabitat areas.
This seasonality means that the female boto's high energy demands near birth and during early lactation are met by increased availability of fish driven from flooded forests by falling water levels and forced back into, and concentrated in, the remaining waterways.
Seasonal movements of botos are related to the migration of fish and the annual flooding cycle of the river.
www.animalinfo.org /species/cetacean/iniageof.htm   (2306 words)

  
 Orinoco - Search Results - MSN Encarta
Orinoco, river, Venezuela, one of South America's longest rivers, extending 2,560 km (1,590 mi).
Originating in southeastern Venezuela, the Orinoco River slices across central Venezuela, crossing highlands, rain forests, and tropical...
Its main channel discharges into the Atlantic Ocean, but one branch flows into the Amazon river system.
ca.encarta.msn.com /Orinoco.html   (87 words)

  
 WWF - Orinoco River & Flooded Forests - A Global Ecoregion
Orinoco crocodiles are extremely rare; there are only between 250-700 left in the wild.
The Orinoco's varzea freshwater ecosystems form one of the world's most extensive areas of seasonally inundated forests.
Migrations of fish and terrestrial animal populations into the flooded forests are timed to coincide with the rising waters that flood large areas of the forest floor.
www.panda.org /about_wwf/where_we_work/ecoregions/orinoco_flooded_forests.cfm   (298 words)

  
 Orinoco tar sands - Wikipedia, the free encyclopedia
The Orinoco Oil Sands, also known as the Orinoco Tar Sands, are deposits of oil sands located near the Orinoco River in Venezuela.
The Orinoco Tar Sands are known to be one of the largest, if not the largest oil sand deposit in the world, along with the Athabasca Tar Sands in Alberta, Canada.
Orinoco tar sands are, according to experts, the more economic feasible to extract, at $16 per barrel of oil compared with Canada's Athabasca oil sands at around $20 per barrel.
en.wikipedia.org /wiki/Orinoco_tar_sands   (200 words)

  
 Lesley et al
Lewis and Weibezahn (1981) The chemistry and phytoplanckton of the Orinoco and Caroni rivers
Concentration and transport of dissolved and suspended substances in the Orinoco River.
Stable carbon and nitrogen isotopes in algae and detritus from the Orinoco River floodplain, Venezuela.
orinoco.uneg.s5.com /publicaciones.htm   (1010 words)

  
 Terrestrial Ecoregions -- Orinoco wetlands (NT0906)
The Orinoco wetlands are flooded grassland occurring in seven distinct patches, which are embedded in a mosaic of mangroves, swamp forest, moist forest, and llanos.
The ecoregion is located in the north of the delta of the Orinoco River- the second largest river in the Neotropics - in eastern Venezuela.
The blocks of flooded grassland occur north of the main flow of the Orinoco River, along the Boca Grande and San Juan Rivers, and within the alluvial fan of the Orinoco (Amacuro) delta.
worldwildlife.org /wildworld/profiles/terrestrial/nt/nt0906_full.html   (1575 words)

  
 Orinoco   (Site not responding. Last check: 2007-11-03)
Bridge over the Orinoco at Ciudad Bolívar, Venezuela (2004) Map of Lower Orinoco 1897 At its mouth it forms a wide delta that branches off into hundreds of rivers and waterways that flow through 41,000 km² of swampy forests.
Most of the important Venezuelan rivers are tributaries of the Orinoco, the largest being the Caroní, which joins the Orinoco at Puerto Ordaz, close to the Llovizna Falls.
The River is navigable for Most of its length, and dredging enables ocean ships to go as far as Ciudad Bolívar, 435 km upstream.
orinoco.iqnaut.net   (488 words)

  
 Orinoco: Hydrology
Combined, the Orinoco and Amazon Rivers account for 25 percent of the freshwater discharge to the world’s oceans.
The Orinoco River is characterized by a series of rapids between which the river flows in alluvial channels.
Where the river reaches the delta, distributaries fan across the southern part of the delta from an apex at Barrancas.
www.beg.utexas.edu /geoenvirn/orinoco/summary/main/hyd.htm   (219 words)

  
 Crocodilian Species - Orinoco Crocodile (Crocodylus intermedius)   (Site not responding. Last check: 2007-11-03)
Freshwater riverine (middle and lower parts of the Orinoco river) in Llanos savannah - which becomes waterlogged during the rainy season, creating temporary seasonal rivers.
The Orinoco crocodile is one of the larger crocodilian species, with historical records of animals reportedly reaching 6 and even 7 metres (unconfirmed).
Reproductive ecology of the Orinoco crocodile (Crocodylus intermedius) in Venezuela.
www.flmnh.ufl.edu /natsci/herpetology/brittoncrocs/csp_cint.htm   (940 words)

  
 The Orinoco River   (Site not responding. Last check: 2007-11-03)
The Orinoco River, the third largest river in the world.
These are passenger boats on the Orinoco River in Venezuela near San Felix, which is just east of Cuidad Guayana, and Puerto Ordaz.
The sheer size is enormous, especially when you consider that during the rainy season, the river will rise more than 36 feet..
home1.gte.net /bperroux/orinoco.html   (55 words)

  
 Orinoco River, Venezuela - Picture - ninemsn Encarta
Orinoco River, Venezuela - Picture - ninemsn Encarta
The Orinoco River delta in Venezuela has an area of about 20,700 sq km (8,000 sq mi) near the Atlantic Ocean.
The river is one of the longest in South America with a length of about 2,560 km (1,591 mi).
au.encarta.msn.com /media_461511619/Orinoco_River_Venezuela.html   (48 words)

  
 Shuttle images of VENEZUELA
ORINOCO RIVER DELTA: • • • • •; • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
ORINOCO BASIN: • • • • • • • • • •
ORINOCO RIVER BASIN: • • • • • • • • • • • • • • • • • • • • • • • • • • • •
rove.to /venezuela   (1106 words)

  
 Orinoco — FactMonster.com
Rising near Mt. Delgado Chalbaud in the Guiana Highlands, S Venezuela, the Orinoco flows in a wide arc through tropical rain forests and savannas (llanos), forming part of the Venezuela–Colombia border, and enters the Atlantic Ocean through a large marshy delta (c.7,800 sq mi/20,200 sq km) in NE Venezuela.
Principal Rivers of the World - Principal Rivers of the World (See Rivers of the United States for other U.S. rivers.) Approx.
Apure - Apure, river, c.500 mi (800 km) long, rising in the Andes, N Colombia, and flowing E across W...
www.factmonster.com /ce6/world/A0836859.html   (367 words)

  
 Orinoco River Plume - Classic CZCS Scenes
The Orinoco River delta is located along the coast of Venezuela, where the river flows into the southern Caribbean Sea just east of Trinidad and Tobago.
During the rainy season, the fresh water of the Orinoco flowing into the Caribbean Sea is carried to the northeast by the predominant currents flowing along the South American coast.
The river outflow is enriched in nutrients, and because it is less dense than seawater, the fresh water remains at the surface, breaking up into lenses of less saline water.
disc.gsfc.nasa.gov /oceancolor/scifocus/classic_scenes/05_classics_orinoco.shtml   (479 words)

  
 Orinoco Delta Expedition | "Orinoco River | Orinoco Delta | Venezuela | Warao Indians | Rainforest | Jungles | ...
Explore the Orinoco Delta with its fauna and flora
The Orinoco Delta in Venezuela is accessible yet still virgin.
A boat trip to observe the fauna and flora of the area, a quiet canoe ride in a small river, fishing for Piranhas, a spectacular sunset with cocktails on the boat, and a night trip in a canoe with spotlights to blend in the delta darkness.
www.infohub.com /TRAVEL/SIT/sit_pages/4846.html   (545 words)

  
 Miami Museum of Science - The Orinoco River
The Orinoco itself is 1,250 miles long, but the vast region that drains into the river is 385,000 square miles (1,000,000 km2).
Understanding the Orinoco is important if we want to know who we have been and who we will be.
To understand the Orinoco is to predict the ecological future of the planet.
www.miamisci.org /orinoco/index.html   (201 words)

  
 Cruising photos taken onboard Royal Olympic Cruises Olympia Voyager of the Orinoco River   (Site not responding. Last check: 2007-11-03)
This is the meeting of two rivers at Ciudad Guayana (Caroni River and Orinoco River).
The Orinoco River is chocolate brown due to constant erosion of the Andes mountains -- the river's origin.
The Caroni River is a dark tea like color due to the tannic acids from the vegetation located along the banks of this shorter river.
www.cruisepakngo.com /orriverphotos.htm   (362 words)

  
 Orinoco River: In The South Of Venezuela ~ by John Spampinato
Orinoco River: In The South Of Venezuela ~ by John Spampinato
The river meandered unceasingly with few straight stretches longer than a hundred yards or so as the banks drew ever narrower, thick with uninterrupted foliage contrasting steep basaltic cliffs in the distance.
The plan was simple enough; charter a decent sized boat to explore the Orinoco delta with, a scheme we had high hopes for, a scheme destined for failure from the outset following frustrating leads, rebuffing extortionate cost proposals and dealing with the most uncouth and unaccommodating locals we had ever met anywhere.
www.escapeartist.com /efam/67/Travel_On_The_Orinoco_River.html   (4870 words)

  
 Orinoco River cruise, Venezuela's unique adventure travel experience
The Orinoco River spawns more than 300 tributaries that snake through a vast landscape, creating one of the world's largest wetlands where birds and wildlife are abundant.
The Orinoco River Delta's bird life includes cormorants, brown pelicans, bitterns, herons, hawks, ospreys, toucans, macaws, hummingbirds, kingfishers and parrots.
The Orinoco River Delta is one of the largest intact and unspoiled wetlands in the world.
www.angel-ecotours.com /adventure-travel-package-orin1.HTML   (583 words)

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