Navigation Links
Sea bed provides information about present climatic change
Date:1/22/2009

This release is available in Spanish.

Lately, every drought, flood or hurricane which happens in the planet is connected with climatic change, and therefore the interest of society and scientists is getting to know this phenomenon better.

Climatic change is connected at present with the phenomenon of global warming. This is characterized by the increase of carbon dioxide (CO2 gas), which produces the reduction of heat emission to the space and provokes a higher global warming.

Although gases in the atmosphere tell us about this greenhouse effect, oceans have accumulated information for million years which allow us a better understanding of this phenomenon.

The past lets us know the present

In this process, which involves a better knowledge of carbon cycle in the sea, David Gallego Torres developed the research work "Acumulacin y preservacin de materia orgnica en sedimentos marinos: implicaciones en los ciclos del carbono y nutrientes" (Accumulation and preservation of organic matter in marine sediments: implications in the cycles of carbon and nutrients), under the supervision of Professors Francisca Martnez Ruiz and Miguel Ortega Huertas of the University of Granada (Andalusian Institute of Earth Sciences, CEAMA and Department of Mineralogy and Petrology).

"Oceans may act as a drain of carbon, in the way of inorganic carbonates or as organic matter settled in sediments", says Gallego Torres, who did research, among other phenomena, into the accumulation of organic matter in the geological past (Plioceno-Holoceno), in the East of the Mediterranean.

According to the researcher, "for the carrying out of this work we applied different techniques of geochemical analysis, mineralogy and isotopic analysis of organic matter for the reconstruction of the paleoceanographic conditions which induced to the accumulation of organic matter in marine sediments (sapropels), its implications in the carbon cycle and, consequently, in the climatic variation in the Mediterranean area and in the African craton, the main source of nutrients of these sediments".

Professor Francisca Martnez Ruiz highlights that the analysis research line of the climatic variability in the geological past "provides scenes of climatic changes which help us to understand the answers of the components of the climatic system in future".

Conclusions

Doctor David Gallego Torres says that one of the main conclusions of his research is that "climatic fluctuations affect the marine environment in such a way that there may be a carbon taking by organic matter, due to these changes in marine environment's oceanography, in such a way that the organic matter would remain accumulated again in the earth's crust of sediments and would remain there for a while".

Other conclusions are:

  • the accumulation of organic matter in marine sediments is mainly connected with an intensification of marine productivity;
  • anoxic conditions (without oxygen) of the sea bed favour the preservation of such organic matter, but they can not produce an enrichment in the sediment by themselves;
  • anoxia causes nutrients' recycling maintaining a high productivity, in such a way that the interaction between primary high productivity and anoxia may promote the accumulation of organic matter in sediments.
  • Such fixing of organic carbon in the litosphere is connected with the climatic system, as high concentrations of CO2 in the atmosphere facilitate a high productivity, due to an excess of carbon. Such CO2 is later fixed, in the way of organic matter, and removed of the atmospheric reservoir inducing a fall in Earth's superficial temperature.


'/>"/>

Contact: Francisca Martinez Ruiz
fmruiz@ugr.es
34-630-880-514
Universidad de Granada
Source:Eurekalert

Related biology news :

1. New study provides further evidence that apple juice can delay onset of Alzheimers disease
2. Rare disease provides clues about enzyme role in arrhythmias
3. Discovery of giant roaming deep sea protist provides new perspective on animal evolution
4. New method provides panoramic view of protein-RNA interactions in living cells
5. Innovative surgery by MSU veterinarian provides new lease on life to dogs
6. Supercomputer provides massive computational boost to biomedical research at TGen
7. MU brain imaging center provides research for autism, schizophrenia and Parkinsons disease
8. Brain structure provides key to unraveling function of bizarre dinosaur crests
9. Digital zebrafish embryo provides the first complete developmental blueprint of a vertebrate
10. Study provides insight on a common heart rhythm disorder
11. Field Museum provides gold standard for mammal survey
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/21/2017)... and PORTLAND, Ore. , Feb. 22, ... Avamere Family of Companies (Avamere Health Services, Infinity Rehab, ... six-month research study that will apply the power of ... senior living and health centers. By analyzing data streaming ... gain insights into physical and environmental conditions, and obtain ...
(Date:2/13/2017)... Former 9/11 Commission border counsel and Special ... Kephart of Identity Strategy Partners, LLP, today releases ... "Executive Order: Protecting the Nation From Foreign Terrorist Entry ... "As President Trump,s ,Travel Ban, Executive Order gains more ... the travel ban, it is important that our national ...
(Date:2/8/2017)... YORK , Feb. 7, 2017 Report Highlights ... The ... should reach $11.4 billion by 2021, growing at a compound ... Includes - An overview of the global markets for synthetic ... 2015, estimates for 2016, and projections of compound annual growth ...
Breaking Biology News(10 mins):
(Date:2/27/2017)... -- Fluxion Biosciences announced today that Genetracer Biotech of ... as a Certified Service Provider for Fluxion,s IsoFlux CTC ... in Genetracer Biotech,s novel liquid biopsy workflows for detection ... plans to move to other cancers as additional assays ... to isolate, recover, and analyze CTCs (circulating tumor cells) ...
(Date:2/25/2017)... Garden City, New York (PRWEB) , ... February ... ... announced their partnership with Verified Clinical Trials in an ongoing effort ... the areas of treatment, advocacy, and pharmaceutical research with emphasis on consumers and ...
(Date:2/24/2017)... 24, 2017 Provectus Biopharmaceuticals, Inc. (OTCQB: ... a clinical-stage oncology and dermatology biopharmaceutical company, today ... participate in its previously announced rights offering of ... of common stock and Series C Convertible Preferred ... warrants. As previously announced, the ...
(Date:2/24/2017)... -- China Cord Blood Corporation (NYSE: CO ... cord blood collection, laboratory testing, hematopoietic stem cell processing ... financial results for the third quarter and first nine ... Third Quarter of Fiscal 2017 Highlights ... 2017 increased by 18.6% to RMB200.9 million ($28.9 million). ...
Breaking Biology Technology: