As grandes reservas hídricas como a bacia do Congo, Amazonas, o aquífero Guarani ou os grandes lagos de África central coincidem com a existência de grandes populações em expansão e fortes conflitos étnicos e religiosos.
Aziz Nacib Ab'Saber, um dos maiores especialistas em geografia física do país, bem como uma voz ativa nos debates sobre biodiversidade e preservação ambiental, morreu na manhã desta sexta-feira, às 10h20.
Here the coast is dominated by extensive sand dunes, interspersed with pockets of mangroves in bays and river mouths. In this type of false colour composite images, mangrove appears in different shades of red.
As organizations collect more and more data, the ability to map, visualize and understand data form a geographic standpoint will become an increasingly important part of any BI solution. Why? Because, according to IDC, more than 80 percent of the data collected by organizations has a spatial element.
The Mamore River drains north from the Andes Mts. in lowland Bolivia. An image taken in July 2003 from the International Space Station (ISS007-E-10797, 14 June 2003, 12:36 GMT) shows an 85 km stretch of the river south of the lowland town of Trinidad in the Beni Province. A 55-km stretch (centered at 15.2°S 66°W) was rectified to the commercially available 1990 edition of the Landsat TM imagery of the world.
Numerous changes in river pattern are visible in the decade since the Landsat imagery was acquired. A pilot study was undertaken to characterize these rapid changes. Tie points were selected for geomorphic features which do not undergo short-term change- i. e. oxbow lakes and subsidence lakes in the floodplain. The ISS image was enhanced slightly to reveal the Mamore River channel......
The following ArcGIS Online map services in the older ArcGIS Online WGS84 tiling scheme will be retired in April 2012. If you are using one of these services in one of your applications, you should plan to update those applications now.
I came across the following site that has a wealth of free information on Geographic Information Systems'(GIS)-related information by Berry & Associates // Spatial Information Systems (BASIS). Map Analysis is a great subject for anyone interested in analyzing maps especially through GIS...
This false colour composite scheme allows vegetation to be detected readily in the image. In this type of false colour composite images, vegetation appears in different shades of red depending on the types and conditions of the vegetation.
Saving biodiversity -- the vast and essential variety of the natural world -- will be expensive, at an estimated $300 billion a year for the next eight years.
WASHINGTON (Reuters) - Saving biodiversity -- the vast and essential variety of the natural world -- will be expensive, at an estimated $300 billion a year for the next eight years. But losing it would cost even more, in terms of disease, hunger, poverty and diminished resilience to climate change, according to the new chief of the U.N. Convention on Biological Diversity.
"Biodiversity is the basis of everythingwe do in agriculture, everything we do in health," Braulio Ferreira de Souza Dias told Reuters.
"So the development of new vaccines, the development of new cultured varieties of plants is based on biodiversity, genetic resources. If we lose biodiversity, we lose the options for future development in these areas."
Human destruction of natural habitats, unbridled economic development, pollution and climate change are among the threats to plant and animal life, on land and underwater. Preserving biological diversity is an uphill fight as the needs of the world's growing human population - now numbering about 7 billion - increasingly come into conflict with protecting nature.
Dias, named to the job in January, starts from a position of certainty: 192 nations already have agreed on what needs to be done by 2020 to preserve biodiversity.
His job is to help them figure out how to do it. He will have the chance to do that when global representatives gather in Rio de Janeiro in June, 20 years after the first Earth Summit set out a plan for worldwide environmental protections.
This year, the meetings will focus on sustainable development, a theme purposely chosen to avoid climate change controversies. It is an important one for Dias, who previously headed biodiversity for the Brazilian ministry.
Dias has been impressed by some of the biodiversity pilot programs launched by companies and governments around the world, but he believes these efforts need to be quickly expanded.