Navigation Links
Fires regenerate African grassland
Date:9/19/2008

This release is available in German.

Windhoek/Leipzig. Natural grass fires are evidently more important for the ecology of savannahs than has previously been assumed. This is the finding of a study carried out in Etosha National Park in the north of Namibia. It is the first study to have investigated the complex interplay of the factors fire, competition, moisture and seed availability in relation to a grass species. Periodic fires in semi-arid regions can lead to older tufts of grass disappearing, thereby making room for younger grasses. Writing in the Journal of Ecology, the researchers from the Helmholtz Centre for Environmental Research (UFZ), the University of Frankfurt am Main and the University of Cologne say that fire therefore plays an important role in regeneration. The findings are particularly significant for the management of semi-arid nature reserves, in which, in the absence of natural plant eaters, fires are the only practical means of renewing the grass canopy.

For the study, the researchers selected an area measuring 500 by 500 metres in Etosha National Park because it has one dominant grass species and because it was possible to rule out interference such as grazing and other human influences. Etosha National Park in the north of Namibia is the second largest nature reserve in Africa, measuring 20,000 square kilometres. The temperatures in the semi-arid savannah fluctuate between 6 degrees centigrade in the winter and 35 degrees in the summer. The area under investigation is one of the driest areas in which plants can still grow, with annual rainfall of just 380 mm. That is less than the rainfall in the rain shadow of the Harz mountains.

Stipagrostis uniplumis is the dominant grass species and lives for several years. The researchers observed the growth of these grasses at weekly intervals for one season and measured
'/>"/>

Contact: Tilo Arnhold
presse@ufz.de
49-341-235-1635
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1 2

Related biology news :

1. US fires release large amounts of carbon dioxide
2. Massive California fires consistent with climate change
3. Jefferson urologists studying regenerated neo-bladder to help spinal cord injury patients
4. New gene variant identified for nondiabetic end stage renal disease in African-Americans
5. African-Americans have unique lung cancer risks from chronic obstructive pulmonary disease
6. When threatened, a few African frogs can morph toes into claws
7. Many African-Americans have a gene that prolongs life after heart failure
8. Alcohol and malt liquor availability and promotion higher in African American inner cities
9. Marsupial lion tops African lion in fight to death
10. Study: weight-loss tips differ in African-American, mainstream magazines
11. Study of African traditional medicine will begin world-first clinical trial
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Fires regenerate African grassland
(Date:10/16/2014)... they are anything but sustainable: environmental damage to ... becoming increasingly evident. Despite their disadvantages, however, monocultures ... as the sole possibility of achieving higher yields ... Schmid, an ecology professor at the University of ... and forestry. After all, a new study carried ...
(Date:10/16/2014)... Calif. (October 16, 2014) – Post-menopausal women experienced ... on hormone levels or genital bleeding, after 12 ... an investigational fermented soy germ-based nutritional supplement previously ... to a new peer-reviewed pilot study reported in ... (NAMS) annual scientific meeting. , "These data ...
(Date:10/15/2014)... N.Y. , Oct. 15, 2014 ... solutions for home and community-based care, today announced ... of implementing Sandata,s Santrax® Electronic Visit Verification™ Solution ... Services is a home health company founded in ... Texas . The study ...
Breaking Biology News(10 mins):Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3S-equol supplements associated with improved measures of reproductive health in postmenopausal women 2Sandata Announces Case Study with Quality Care Services, Inc. 2
... CHAPEL HILL, N.C. A new study led by ... differences in brain development starting at age 6 months in ... who did not develop autism. "It,s a promising finding," ... and a postdoctoral fellow at UNC,s Carolina Institute for Developmental ...
... & Science University have discovered that brain cells ... critically important for the growth of brainstem neurons responsible ... the prevention and treatment of SIDS (Sudden Infant Death ... one month to one year. The new ...
... MADISON -- Nacre -- or mother of pearl, scientists and ... Produced by a multitude of mollusk species, nacre is ... musical instruments, furniture and decorative boxes. Fashioned into buttons, beads ... mother of pearl lends a lustrous iridescence to everyday objects. ...
Cached Biology News:Brain-imaging differences evident at 6 months in infants who develop autism 2OHSU discovery may someday lead to prevention and treatment of sudden infant death syndrome 2Mother of pearl tells a tale of ocean temperature, depth 2
(Date:10/19/2014)... The report "Unmanned Ground Vehicle Market by ... Type & by Geography - Forecasts & Analysis ... vehicle market into various sub segments with an ... report also identifies the factors driving this market, ... the adoption trends. , The unmanned ground vehicle ...
(Date:10/18/2014)... The Asian arthroscopic devices report defines and segments ... of revenue. The arthroscopic devices market in Asia is ... a CAGR of 6.5% from 2013 to 2018. , ... market, to get an idea of the in-depth analysis ... of arthroscopic devices market in the same region, and ...
(Date:10/18/2014)... According to a new market research report “Hydraulic ... Trends & Forecasts up till 2017”, hydraulic fracturing market ... value is expected to increase from $40 billion in ... during the same period. North America is expected to ... of hydraulic horse power supplied by the year 2011. ...
(Date:10/17/2014)... Germany , October 17, 2014 ... Translational research in cancer and other diseases will ... American Society of Human Genetics annual meeting   ... to Ingenuity ®  Knowledge Base greatly exceeds any ... Ingenuity ®  Variant Analysis™ adds fully integrated ...
Breaking Biology Technology:Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 2Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 4Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 5The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 2The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 3The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 4Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4QIAGEN Demonstrates Expanded Bioinformatics Workflows at ASHG; Strong Market Adoption as Researchers Analyze Genomic Data on More Than a Quarter-Million Samples in Secure Private Cloud 2QIAGEN Demonstrates Expanded Bioinformatics Workflows at ASHG; Strong Market Adoption as Researchers Analyze Genomic Data on More Than a Quarter-Million Samples in Secure Private Cloud 3QIAGEN Demonstrates Expanded Bioinformatics Workflows at ASHG; Strong Market Adoption as Researchers Analyze Genomic Data on More Than a Quarter-Million Samples in Secure Private Cloud 4QIAGEN Demonstrates Expanded Bioinformatics Workflows at ASHG; Strong Market Adoption as Researchers Analyze Genomic Data on More Than a Quarter-Million Samples in Secure Private Cloud 5QIAGEN Demonstrates Expanded Bioinformatics Workflows at ASHG; Strong Market Adoption as Researchers Analyze Genomic Data on More Than a Quarter-Million Samples in Secure Private Cloud 6
... Keryx Biopharmaceuticals,Inc. (Nasdaq: KERX ) today ... will present an overview of the Company,s cancer,pipeline ... Investment Conference,in San Francisco. Dr. Henderson,s presentation will ... PT. Dr. Henderson,s presentation will be webcast ...
... Mass., Sept. 17 Interleukin Genetics,(Amex: ILI ... Scientific,Officer, Kenneth Kornman, DDS, PhD, will present at ... Alexandria, VA. The conference will,focus on innovative methods ... Among a group of presenters that includes industry ...
... the U.S. Department of Energy,s Argonne National Laboratory physicist ... mechanisms, which makes it possible to switch a magnetic ... to more accurately write and store information. , Bode ... a special scanning tunneling microscope equipped with a magnetic ...
Cached Biology Technology:Keryx Biopharmaceuticals to Present at Bank of America Investment Conference 2Interleukin Genetics President and Chief Scientific Officer to Present at Immunotoxicology V Conference 2Interleukin Genetics President and Chief Scientific Officer to Present at Immunotoxicology V Conference 3Researchers improve ability to write and store information on electronic devices 2
Gloves are 9.25 long, latex, powder free, smooth and ambidextrous....
Request Info...
Prepared with distilled water. Yeast extract solution is autolyzed at 150 g/L....
Streptomycin sulfate an aminoglycoside used for bacterial selection binds to the small ribosomal subunit and interferes with protein biosynthesis.21H39N7O12)2x3H2SO4Formula weight:...
Biology Products: