Navigation Links
River delta areas can provide clue to environmental changes, Texas A&M prof says
Date:5/11/2009

Sediments released by many of the world's largest river deltas to the global oceans have been changed drastically in the last 50 years, largely as a result of human activity, says a Texas A&M University researcher who emphasizes that the historical information that can be gathered from sediment cores collected in and around these large deltaic regions is critical for a better understanding of environmental changes in the 21st century.

Thomas Bianchi, a professor in the Department of Oceanography who specializes in estuarine and marine systems, and colleague Mead Allison of the University of Texas have examined sediments from delta areas around the world, most notably the Mississippi in the United States and the (Huanghe) Yellow and Yangtze in China. These sediments contain information that can provide data on past changes in nitrogen application in the drainage basin from agricultural fertilizers, records of past flooding and hurricane events, to name a few, Bianchi says.

Their work is published in the current issue of the "Proceedings of the National Academy of Sciences."

"These deltaic sediments can serve as a history book of sorts on land-use change in these large drainage basins which is useful for upland and coastal management decisions as related to climate change issues," Bianchi explains.

"Although the information stored in these sediments can be altered during its transport from the upper drainage basin to the coast, we still find very stable tracers, both organic and inorganic, that can be used to document changes induced by natural and human forces."

Such sediments are ever-present, the authors say, noting that 87 percent of the Earth's land surface is connected to the ocean by river systems. They also explain that 61 percent of the world's population lives along a coastal boundary, and that number is expected to climb to 75 percent by 2025.

Much of the sediment from rivers forms into what are called large river
'/>"/>

Contact: Thomas Bianchi
tbianchi@tamu.edu
979-845-5137
Texas A&M University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Baiji Dolphin previously thought extinct spotted in the Yangtze River
2. UC Riverside biologist receives prestigious MacArthur Fellowship
3. International team of scientists warns of climate changes impact on global river flow
4. Stronger EPA leadership needed to improve water quality in Mississippi River
5. UC-Riverside partners with Chinese university to address Chinas environmental problems
6. X-effect: female chromosome confirmed a prime driver of speciation
7. Tiny fish can yield big clues to Delaware River health
8. Scientists from the UGR prove that rivers do not act as barriers for groundwater flow
9. More comprehensive analysis of Klamath River basin needed to aid decision makers
10. Chemicals used as fire retardants could be harmful, UC-Riverside researchers say
11. LSU, Yale team study agricultural impact on Mississippi River
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/17/2014)... 15, 2014  HITLAB SM announced today ... audit to confirm its adherence to current U.S. ... enables HITLAB to conduct regulated smart device and ... for patient safety and research quality. ... quality, and delivery with innovative technology," said ...
(Date:12/11/2014)... Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/twhjll/biometrics_market ) has announced the ... APAC Region 2015-2019"  report to their offering. ... market is advances in technology. With continuous advances ... solutions to the latest standard that meets the ...
(Date:12/10/2014)... -- Valencell, a leader in performance biometric data sensor technology, ... its licensees for highly accurate, clinically validated biometric technology. ... from fitness and health sectors, but first responders/military and ... only as useful as the biometric data it delivers. ... long-term mass consumer adoption of wearable products," said Dr. ...
Breaking Biology News(10 mins):HITLAB Completes GCP Audit for FDA Smart Device & App Compliance 2Biometrics Market in the APAC Region 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... Access to Research Careers) Program has announced the travel ... Advanced Course in Immunology at The University of Minnesota ... These awards are meant to promote the entry ... mainstream of the basic science community and to encourage ...
... A deep-sea mystery has been solved with the discovery that ... cod and mackerel, use the same buoyancy control as whales. ... Oceanography , researchers from British Antarctic Survey describe how Southern ... ,hibernates, in the deep ocean during winter when seas are ...
... out of a comic book or a science fiction movie ... two investigators at the Wellman Center for Photomedicine at Massachusetts ... appear in the journal Nature Photonics and is ... Seok Hyun Yun, PhD, describe how a single cell genetically ...
Cached Biology News:Single GFP-expressing cell is basis of living laser device 2Single GFP-expressing cell is basis of living laser device 3
(Date:12/19/2014)... 18, 2014 Relmada Therapeutics, Inc. (OTCQB: RLMD), ... of chronic pain, announced the results of its annual ... was a transformational year in Relmada,s history and it ... company," said Sergio Traversa , chief executive officer ... on key financial, human resource and clinical development objectives ...
(Date:12/17/2014)... December 16, 2014 “Never say, ... Philipps- Universität Marburg’s Department of Physics, advises young ... the newly released SPIE Women in Optics ... too shy to ask questions.” , In the ... and mathematics) occupations ranging from university professor and ...
(Date:12/17/2014)... Long Beach, CA (PRWEB) December 17, 2014 ... Technology, Inc. to provide a larger packaged waste water ... district in King Abdullah Economic City (KAEC). Two years ... for EMAAR’s Jeddah Gate Development, serving two residential towers ... plant capacity is over a quarter million gallons per ...
(Date:12/17/2014)... Gene synthesis and bioengineering company ... into a technology access and services agreement with ... proprietary protein engineering technology, known as “ProteinGPS®” to ... extremely excited that the global leader ADM has ... bioengineering technology has now been validated through many ...
Breaking Biology Technology:Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 3ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2
... System (RTLS) Market, ORLANDO, Fla., Feb. 25 ... in precision ultra wideband (UWB),real- time location systems ... (PLUS) product line at the HIMSS08,healthcare conference and ... patented UWB technology, enables RTLS solutions to move ...
... Strativa,Pharmaceuticals, the proprietary products division of a wholly ... PRX ) today,announced that its development partner, Immtech ... discontinue the development program for,pafuramidine maleate, an investigative ... that it had received additional,reports of adverse events ...
... at the upcoming World ... Congress of Anesthesiologists Meeting, IRVINE, Calif., ... Measure-Through Motion and Low Perfusion pulse,oximetry, announced that it ... hemoglobin (SpHb(TM)) and oxygen content,(SpOC(TM)) monitoring at the World ...
Cached Biology Technology:Time Domain Showcases Precision Location Capability of Ultra Wideband PLUS Product Line at HIMSS 2008 2Time Domain Showcases Precision Location Capability of Ultra Wideband PLUS Product Line at HIMSS 2008 3Strativa Pharmaceuticals, a Division of Par Pharmaceutical, Announces the Discontinuation of the Development Program for Pafuramidine 2Strativa Pharmaceuticals, a Division of Par Pharmaceutical, Announces the Discontinuation of the Development Program for Pafuramidine 3Masimo Announces Continuous Noninvasive Total Hemoglobin 2Masimo Announces Continuous Noninvasive Total Hemoglobin 3Masimo Announces Continuous Noninvasive Total Hemoglobin 4