Navigation Links
Reforestation using exotic plants can disturb the fertility of tropical soils
Date:5/29/2008

In many regions of the world, the impact of human activity on the environment intensified considerably over the past century. The high world population growth rate and the expansion of areas given over to crop production associated with climatic changes (longer periods of drought, irregular rainfall patterns) induced by global warming, have contributed to the acceleration of desertification. According to World Soil Information (ISRIC) rate, in the space of 50 years, 12.8 million km2 of soils have thus experienced diminished fertility. With the aim of limiting such land impoverishment, which is hitting the intertropical and mediterranean zones particularly harshly, a range of reforestation programmes using rapid-growing forest species (such as eucalyptus, exotic pine or Australian acacias) was undertaken from the mid 1970s.

Establishment of bacterial and mycorrhizal symbioses provides these trees with the adaptation ability necessary for growth on virtually barren, mineral-deficient soil. Although no proof is needed as to their effectiveness for producing plant biomass in harsh environmental conditions and their utility as windbreaks to control erosion, there is little information on their potential impact on the genetic and functional biodiversity of the soil microorganisms. A research programme run since 2005 in Senegal and Burkina Faso by an IRD team and its partners1 yielded clues for understanding the influence of exotic plants on the structure and biodiversity of these communities of fungi and bacteria. In Burkina Faso, controlled experiments showed that the development of E. camaldulensis, the eucalyptus species most often planted in the world, outside its area of origin, significantly reduced the diversity of the mycorrhizal fungi communities essential for the healthy functioning of the ecosystem.

This negative effect was also found in the soil of a Senegalese plantation of Acacia holosericea where, scarcely a few months after it
'/>"/>

Contact: Gregory Flechet
fichesactu@paris.ird.fr
33-014-803-7607
Institut de Recherche Pour le Dveloppement
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. UC Davis stem researchers demonstrate safety of gene therapy using adult stem cells
2. Using ground-penetrating radar to observe hidden underground water processes
3. Key to using local resources for biomass may include waste
4. A screening strategy using zebrafish targets genes that protect against hearing loss
5. The art of using science to inform ecosystem restoration in Puget Sound
6. Using DNA, scientists hunt for the roots of the modern potato
7. Paired microbes eliminate methane using sulfur pathway
8. Scientists find missing evolutionary link using tiny fungus crystal
9. Using carbon nanotubes to seek and destroy anthrax toxin and other harmful proteins
10. Using nanotechnology, UCLA researchers discover cancer cells feel much softer than normal cells
11. Using fMRI to study brain development
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... Janeiro, Brazil- In the brains of all vertebrates, ... allows an electric or chemical signal to be ... synapses, which are the most abundant type of ... formation is crucial for learning, memory, perception and ... synapses critical for brain function. For instance, ...
(Date:7/10/2014)... 2014 Smart technology emphasis grows in ... improved security: NXT-ID, Inc. (OTCBB: NXTD), eBay Inc. (NASDAQ: ... Apple Inc. (NASDAQ: AAPL ), Visa Inc. (NYSE: ... NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company focused on ... second series of 30 second spots on CNBC for its ...
(Date:7/10/2014)... , July 3, 2014 Research and ... of the "Global Gesture Recognition & Touch-Less ... Forecasts to 2020" report to their offering ... Global Gesture Recognition & Touch-Less Sensing Market to ... for a while, but the companies were unable ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 4Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 5Global Gesture Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, Capacitive) Market - Forecasts to 2020 2
... A more accurate method for measuring blood levels of ... damage to the arterial lining has been discovered by ... endothelial progenitor cells (EPC), are produced in the bone ... , The researchers said that tests for EPCs could ...
... spreading at an alarming rate throughout Britain's coast and ... mitten crab, brought to Britain during the last century ... if populations are not monitored and controlled, say the ... Newcastle upon Tyne carried out the first comprehensive modelling ...
... State University of New Jersey, believe they have located ... memories of their parents' songs. The discovery has implications ... few animals that learn to vocalize by imitating their ... Proceedings of the National Academy of Sciences, David Vicario ...
Cached Biology News:Measuring artery repair cells could become new heart disease test 2Measuring artery repair cells could become new heart disease test 3Exotic crab poised for widespread UK invasion 2Exotic crab poised for widespread UK invasion 3Zebra finches remember songs dad sang 2Zebra finches remember songs dad sang 3
(Date:7/10/2014)... researchers at the University of Illinois at Urbana-Champaign ... the interplay of spin and heat at the ... spintronic devices for data storage and information processing. ... as spin-angular momentum. In a typical charge current, ... spin current," explained David Cahill, a professor of ...
(Date:1/15/2014)... assembling a club sandwich at the nanoscale, National ... succeeded in crafting a uniform, multi-walled carbon-nanotube-based coating ... used in upholstered furniture and other soft furnishings. ... was reduced 35 percent compared with untreated foam. ...
(Date:1/15/2014)... Ill. , Jan. 15, 2014  Bill Jacobs Automotive, a ... , is teaming up with the Heartland Blood Center and ... blood drive. The drive takes place Saturday, Jan. 18 at ... - 2 p.m. (Photo: http://photos.prnewswire.com/prnh/20140115/MN46637 )  ...
(Date:1/15/2014)... 2014   Niagara Thermal Products is proud to ... Technologies LLC ("B3") as the critical thermal component supplier ... the Army Corps of Engineers.  B3 has developed the ... contaminants and destroys VOCs and other chemical pollutants, allergens ...
Breaking Biology Technology:University of Illinois study advances limits for ultrafast nano-devices 2Layered security: Carbon nanotubes promise improved flame-resistant coating 2Join the Bill Jacobs Auto blood drive and receive a free oil change 2Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2
... , HOUSTON, Dec. 3 ... updated its facility to offer patients a second surgical option, ... that it currently performs. The first sleeve gastrectomy procedure at the ... on October 20, 2009. The patient is reported as doing ...
... , PHILADELPHIA, Dec. 3 Shire plc ... company, today announced a voluntary recall of five lots and ... (ADHD) patch Daytrana ® . Shire is taking this action ... future may not meet their release liner removal specification, and ...
... , ... Dr. Susan Jiang, M.D., Ph.D.,Chief Science Officer at Shenzhen Beike Biotechnology ... Diabetic,Foot Care in New Delhi, India, November 22, 2009. Beike is ... The conference, organized by the Indian Podiatry Association (IPA), ...
Cached Biology Technology:JourneyLite of Houston Now Offering Sleeve Gastrectomy 2Non-safety-related voluntary recall of a limited portion of Daytrana(R) (methylphenidate transdermal system) patches announced 2Non-safety-related voluntary recall of a limited portion of Daytrana(R) (methylphenidate transdermal system) patches announced 3Non-safety-related voluntary recall of a limited portion of Daytrana(R) (methylphenidate transdermal system) patches announced 4Non-safety-related voluntary recall of a limited portion of Daytrana(R) (methylphenidate transdermal system) patches announced 5Beike Biotechnology CSO Speaks on Role of Stem Cells in Treating Diabetic Foot Disease at IPA Diabetic Foot Care Conference, India 2Beike Biotechnology CSO Speaks on Role of Stem Cells in Treating Diabetic Foot Disease at IPA Diabetic Foot Care Conference, India 3
mu Opioid Receptor splice variant Immunogen: Synthetic peptide corresponding to residues K S C M D R G M R N L L P D D G P R Q E of Mu Opioid Receptor. Storage: -20 C, Avoid Freeze/Thaw Cycle...
Anti-Salmonid Ig (H), Alk Phos, (Clone IPA5F12) (mouse IgG2a)...
Rat monoclonal [HK5.3] to B7 RP1 (Phycoerythrin) ( Abpromise for all tested applications). entrezGeneID: 23308 SwissProtID: O75144...
... with the HECT protein, E6-AP ... Evidence suggests that this E2 ... degradation of non-""N-end rule"" protein ... -acetylated proteins as well as ...
Biology Products: