Saturday, August 23, 2008

800px-NamibNaukluftParkDunes


The Namib Naukluft Park is one of the largest national parks in Africa, covering much of the central Namib Desert and the Naukluft Mountains. It is home to some of the rarest and weirdest plant and animal species in the world, including the Welwitschia Mirabilis, large lichen fields and Hartmann's Mountain Zebra. The park's main attractions are Sossusvlei, Sandwich Harbour and the Naukluft hiking and four wheel drive trails.

The park is a combination of the Namib Desert Park and the Naukluft Mountain Zebra Park as well as sections of the Diamond Area the area of the park is just under 50 000 square kilometers.

Sossusvlei in the Namib Desert is the one attraction that should not be missed while you are in Namibia, the dunes are amazing and even though this is a popular tourist destination it is still easy to gain a sense of solitude while climbing one of the dunes or walking to dead or hidden vlei.

The Namib Desert section of the Namib-Naukluft park includes the Swakop and Kuiseb River canyons. For people wanting to experience a sense of Namibia's vastness a few nights at one of the camp site at Kuiseb Bridge, Homeb, Mirabib, Bloedkoppie, Ganab, Vogelfederberg or Kriess-se-Rus should prove to be very exhilarating. All of these camp sites offer very basic facilities, and as they do not have receptions or shops (or even game wardens) they must be booked in advance.

On the coast Sandwich Harbour is a paradise for ornithologists and nature lovers visiting Namibia. The lagoon is fed by fresh water and is a sanctuary for large numbers of coastal birds. Sandwich Harbour is only accessible by four wheel drive vehicles due to the large Namib Desert sand-dunes that meet the Atlantic Ocean. Angling is not permitted from January 25 to April 15, camping is not permitted in the area.

Saturday, July 5, 2008

The Amazon

The Amazon: The World's Largest Rainforest:

The Amazon River Basin is home to the largest rainforest on Earth. The basin -- roughly the size of the forty-eight contiguous United States -- covers some 40% of the South American continent and includes parts of eight South American countries: Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, Guyana, and Suriname, as well as French Guiana, a department of France.

Reflecting environmental conditions as well as p
ast human influence, the Amazon is made up of a mosaic of ecosystems and vegetation types including rainforests, seasonal forests, deciduous forests, flooded forests, and savannas. The basin is drained by the Amazon River, the world's largest river in terms of discharge, and the second longest river in the world after the Nile. The river is made up of over 1,100 tributaries, 17 of which are longer than 1000 miles, and two of which (the Negro and the Madeira) are larger, in terms of volume, than the Congo (formerly the Zaire) river. The river system is the lifeline of the forest and its history plays an important part in the development of its rainforests.

At one time Amazon River flowed westward, perhaps as part of a proto-Congo (Zaire) river system from the interior of present day Africa when the continents were joined as part of Gondwana. Fifteen million years ago, the Andes were formed by the collision of the South Am At one time Amazon River flowed westward, perhaps as part of a proto-Congo (Zaire) river system from the interior of present day Africa when the continents were joined as part of Gondwana. Fifteen million years ago, the Andes were formed by the collision of the South American plate with the Nazca plate. The rise of the Andes and the linkage of the Brazilian and Guyana bedrock shields, blocked the river and caused the Amazon to become a vast inland sea. Gradually this inland sea became a massive swampy, freshwater lake and the marine inhabitants adapted to life in freshwater. For example, over 20 species of stingray, most closely related to those found in the Pacific Ocean, can be found today in the freshwaters of the Amazon.

About ten million years ago, waters worked through the sandstone to the west and the Amazon began to flow eastward. At this time the Amazon rainforest was born. During the Ice Age, sea levels dropped and the great Amazon lake rapidly drained and became a river. Three million years later, the ocean level receded enough to expose the Central American isthmus and allow mass migration of mammal species between the Americas.

The Ice Ages caused tropical rainforest around the world to retreat. Although debated, it is believed that much of the Amazon reverted to savanna and montane forest (see chapter 3-Ice Ages and Glaciation). Savanna divided patches of rainforest into "islands" and separated existing species for periods long enough to allow genetic differentiation (a similar rainforest retreat took place in Africa. Delta core samples suggest that even the mighty Congo watershed was void of rainforest at this time). When the ice ages ended, the forest was again joined and the species that were once one had diverged significantly enough to be constitute designation as separate species, adding to the tremendous diversity of the region. About 6000 years ago, sea levels rose about 130 meters, once again causing the river to be inundated like a long, giant freshwater lake. erican plate with the Nazca plate. The rise of the Andes and the linkage of the Brazilian and Guyana bedrock shields, blocked the river and caused the Amazon to become a vast inland sea. Gradually this inland sea became a massive swampy, freshwater lake and the marine inhabitants adapted to life in freshwater. For example, over 20 species of stingray, most closely related to those found in the Pacific Ocean, can be found today in the freshwaters of the Amazon.

About ten million years ago, waters worked through the sandstone to the west and the Amazon began to flow eastward. At this time the Amazon rainforest was born. During the Ice Age, sea levels dropped and the great Amazon lake rapidly drained and became a river. Three million years later, the ocean level receded enough to expose the Central American isthmus and allow mass migration of mammal species between the Americas.

The Ice Ages caused tropical rainforest around the world to retreat. Although debated, it is believed that much of the Amazon reverted to savanna and montane forest (see chapter 3-Ice Ages and Glaciation). Savanna divided patches of rainforest into "islands" and separated existing species for periods long enough to allow genetic differentiation (a similar rainforest retreat took place in Africa. Delta core samples suggest that even the mighty Congo watershed was void of rainforest at this time). When the ice ages ended, the forest was again joined and the species that were once one had diverged significantly enough to be constitute designation as separate species, adding to the tremendous diversity of the region. About 6000 years ago, sea levels rose about 130 meters, once again causing the river to be inundated like a long, giant freshwater lake.