Navigation Links
Assessing the Amazon River's sensitivity to deforestation

Understanding how the Amazon River varies in time, what causes those variations, and how sensitive it will be to ongoing, and accelerating, deforestation is a focus of study for scientists at the Woods Hole Research Center. Population and development pressures in the last several decades have led to significant areas of deforestation in the Amazon, most in the eastern and southern portion of the basin. By using a combination of numerical models and data from several disciplines to assess the possible impacts of future human-induced land cover and land use change, researchers are investigating the causes of changes to stream hydrology and biogeochemistry.

The Amazon, one of the most important watersheds on the planet and the largest river in the world, includes a massive network of rivers, floodplains, streams and wetlands, all playing an important role in modulating the Earth's hydrologic and biogeochemical cycles. With nearly 20 percent of the Earth's freshwater discharge, the Amazon carries more water than the nine other largest rivers of the world combined. The first phase of the study, led by Marcos Costa at the University of Viçosa in Minas Gerais, Brazil and completed in 2002, put together an enormous collection of data describing the physical characteristics of the Amazon River Basin. The data included the first detailed representation of the stream network throughout the 6 and 1/2 million km2 basin, and by itself, took 5 people over nine months to create. Researchers all over the globe are now using this data.

The second phase, led by Michael Coe, an associate scientist with The Woods Hole Research Center, was to build the first comprehensive computer model of the Amazon River and floodplain. This model, built over the course of several years and just recently completed, simulates the inter-connected river and floodplain system for the entire 6.5 million km2 basin. According to Coe, "The problem has always been that there simply aren't enough observations over a long enough time period for us to understand the River system. So this model, by letting us simulate the entire river through time, has helped us learn much about how the river flow and flooded area react to year-to-year variations in climate."

Currently entering a third phase of study, a model of the Amazon River and floodplain will be combined with estimates of future deforestation to understand how humans may be affecting the Amazon. Coe says, "This research will provide us with a better understanding of how sensitive the Amazon river is to human activities and can provide government managers and civil society with a tool for analyzing the costs and benefits of different land-use policies and help plan future settlement, land use and conservation priorities."

"This third phase is particularly exciting because we are now combining what we have learned about the physical River with human activities on the land surface, such as deforestation and agriculture," says Coe. This novel linkage of social and physical sciences will provide a better understanding of the consequences for the River of a range of land use policy options in Amazonia, from current business-as-usual development trends to improved governance strategies leading into the mid-21st century. "It is that improved understanding of how human decisions about land use directly impact the River and its ecosystems, which can help people make more informed decisions for the future of Amazonia," he adds.


'"/>

Source:Woods Hole Research Center


Related biology news :

1. Amazon symposium to address large-scale conservation
2. Amazon source of 5-year-old river breath
3. Woods Hole Research Center plans controlled burn in Amazon rainforest
4. Ants, not evil spirits, create devils gardens in the Amazon rainforest, study finds
5. NASA satellite data provides rapid analysis of Amazon deforestation
6. Logging doubles threat to the Amazon, rivaling clear-cutting, study suggests
7. Amazon trees much older than assumed, raising questions on global climate impact of region
8. Why the Amazon rainforest is so rich in species
9. Satellites show Amazon parks, indigenous reserves stop forest clearing
10. Amazonian terra preta can transform poor soil into fertile
11. The Amazon in 2050: Implementing the law could save a million square kilometers of rainforest
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/22/2016)... On Monday, the Department of Homeland Security ... solutions for the Biometric Exit Program. The Request for ... (CBP), explains that CBP intends to add biometrics to ... United States , in order to deter visa ... Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
(Date:6/16/2016)... June 16, 2016 The ... expected to reach USD 1.83 billion by 2024, ... Research, Inc. Technological proliferation and increasing demand in ... expected to drive the market growth. ... The development of advanced multimodal techniques for ...
(Date:6/9/2016)... TURKU, Finland , June 9, 2016 ... French National Police deploy Teleste,s video security solution to ensure ... France during the major tournament ... and data communications systems and services, announced today that its ... Police Prefecture to back up public safety across ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Wausau, WI (PRWEB) , ... June 23, 2016 ... ... probiotic supplements, is pleased to announce the launch of their brand, UP4™ Probiotics, ... supplements for over 35 years, is proud to add Target to its list ...
(Date:6/23/2016)... Md. , June 23, 2016 A person ... from the crime scene to track the criminal down. ... the U.S. Food and Drug Administration (FDA) uses DNA evidence ... Sound far-fetched? It,s not. The FDA ... sequencing to support investigations of foodborne illnesses. Put as simply ...
(Date:6/23/2016)...  The Prostate Cancer Foundation (PCF) is pleased to announce 24 ... for prostate cancer. Members of the Class of 2016 were selected from a ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... announced the launch of the Supplyframe Design Lab . Located in Pasadena, ... explore the future of how hardware projects are designed, built and brought to ...
Breaking Biology Technology: