Deforestation from increased grazing and agriculture has destroyed 17 percent of the native vegetation in Brazil’s Pantanal, considered the world’s largest wetland.
A new study published by Conservation International sounds an alarm for the Paraguay River Basin, which includes the Pantanal. Continued deforestation at the current rate would cause all of the Pantanal’s original vegetation to disappear in 45 years, according to CI researchers in Brazil.
Overall, opening the region to more grazing and agriculture, including the transformation of native pasture to farmland, has destroyed almost 45 percent of the original vegetation in the Paraguay River Basin. The river basin covers approximately 600,000 square kilometers, 60 percent of it within Brazilian territory. It includes the Pantanal, which comprises 41 percent of the entire basin. The Pantanal is a Brazilian National Heritage site, a significant site of international relevance according to the RAMSAR Wetlands Areas Convention, and a UNESCO Biosphere Reserve.
The CI scientists analyzed satellite images to compare the proportion of deforested areas with those that still have native vegetation. They concluded that agriculture, cattle grazing and coal mining are the major threats to the Paraguay River Basin, a significant hydrographical drainage of the South American continent.
Titled "Estimated Loss of Natural Area in the High Paraguay River Basin and the Brazilian Pantanal," the report produced by the Pantanal Program of CI-Brazil depicts a critical situation. As of 2004, it says, approximately 44 percent of the area’s original vegetation had been altered, with some districts in the Paraguay River Basin losing more than 90 percent of their vegetation.
"It is extremely important to conserve the areas surrounding the Pantanal lowlands, because they are the headwaters of the rivers that make up the Pantanal," said Sandro Menezes, manager of CI-Brazil’s Pantanal’s Program. "These locations contribute to wildlife populations and serve as refuges for the fauna during unfavorable seasons, sheltering species that migrate to avoid floods and climate extremes."
Losing native vegetation causes soil degradation and changes the hydrological processes, which determine the dry and wet cycles and are largely responsible for the biological richness of the region. That in turn can compromise resources such as food and breeding sites offered by the forests and other types of vegetation. An example is the hyacinth macaw, a species threatened with extinction, which depends on a tree commonly called ’manduvi’ (Sterculia apetala) for shelter and reproduction. Without this specific tree, chances are that the hyacinth macaw will disappear.
According to the report, urgent actions required to reverse the situation include increased government regulation and better coordination of conservation efforts at various government levels (municipal, state and federal); a review of current legislation regarding protected areas and legal reserves for the region; and implementation of a broad environmental restoration program in devastated areas.
Alkaline soil, sensible sensor
03.08.2017 | American Society of Agronomy
New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
23.08.2017 | Life Sciences
23.08.2017 | Life Sciences
23.08.2017 | Physics and Astronomy