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:5/18/2015)... -- Fingerprint Cards (FPC) has received an order ... FPC1035 from one if its module partners. Deliveries are planned ... and the sensors will be used by smartphone manufacturers in ... hereby amount to 740 MSEK to date. In addition to ... a number of smaller orders not separately communicated amounting to ...
(Date:5/11/2015)... Curemark LLC, a privately held drug research ... Phase III double blind, randomized, placebo-controlled clinical trial to ... all children ages 3-8 with Autism. Previously, Curemark announced ... blinded clinical trial for CM-AT in children ages 3-8 ... enzyme chymotrypsin. This new trial will help determine whether ...
(Date:5/5/2015)... Conn. , May 5, 2015, NXT-ID, Inc. ... authentication company focused on the growing mobile commerce market, reminds ... Company,s Chief Technology Officer, is presenting  at CARTES SECURE CONNEXIONS ... May 5-7, 2015. The three-day conference is ... David is speaking in is themed Global Fraud: Where ...
Breaking Biology News(10 mins):Fingerprint Cards Receives Touch Fingerprint Sensor Order of SEK 230 Million and Raises Revenue Guidance for 2015 2Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3
... contains stem cells with a surprising capacity for repair, ... journal Cell, published by Cell Press. The novel insight ... have clinical implications for the treatment of brain damage, ... mice whose brains were severely damaged by loss of ...
... they have been exposed to biological or chemical weapons could ... who are helping to develop a tiny diagnostic device that ... of a tiny pump, researchers affiliated with MIT's Institute for ... existing miniature "lab on a chip" fully portable, so the ...
... heat-loving archaeon capable of fixing nitrogen at a surprisingly ... Earth’s earliest lineages of organisms capable of nitrogen fixation, ... and animals rely on to fix nitrogen. , ... of Science supports the notion that the gene needed ...
Cached Biology News:Neural stem cells lend the brain a surprising capacity for self-repair 2MIT designs portable 'lab on a chip' 2MIT designs portable 'lab on a chip' 3Microbe fixes nitrogen at a blistering 92 C 2Microbe fixes nitrogen at a blistering 92 C 3
(Date:5/29/2015)... The Academy of Model Aeronautics has awarded $46,500 ... across the nation. , The Academy of Model Aeronautics ... Members with scholarships to pursue technical careers. Since its ... nearly $900,000 to college-bound aero-modelers. The scholarships are granted ... AMA member donations, a portion of AMA member dues ...
(Date:5/29/2015)... , May 29, 2015 Delcath Systems, ... and medical device company focused on oncology with ... metastatic liver cancers, announces that results of a ... uveal melanoma patients with hepatic metastases with the ... highlighted in an on-line abstract at the American ...
(Date:5/29/2015)... 2015  Caris Life Sciences ® , a ... of precision medicine, today announced the presentation of ... utility of Caris Molecular Intelligence ® , the ... to identify targeted treatment options for patients with ... studies, results of which are to be presented ...
(Date:5/29/2015)... May 29, 2015 Results from a ... laherparepvec and its ability to reduce the size of ... been published in the Journal of Clinical Oncology. ... stages IIIB, IIIC and IV melanoma, a potentially fatal ... study was to evaluate the safety and efficacy of ...
Breaking Biology Technology:Academy of Model Aeronautics Awards $46,500 in Scholarships to College-Bound Model Aviation Pilots 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 4Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 5Multi-Platform Tumor Profiling from Caris Life Sciences Identifies Targeted Treatment Options for Patients with Rare and/or Aggressive Tumors 2Multi-Platform Tumor Profiling from Caris Life Sciences Identifies Targeted Treatment Options for Patients with Rare and/or Aggressive Tumors 3Multi-Platform Tumor Profiling from Caris Life Sciences Identifies Targeted Treatment Options for Patients with Rare and/or Aggressive Tumors 4Multi-Platform Tumor Profiling from Caris Life Sciences Identifies Targeted Treatment Options for Patients with Rare and/or Aggressive Tumors 5Multi-Platform Tumor Profiling from Caris Life Sciences Identifies Targeted Treatment Options for Patients with Rare and/or Aggressive Tumors 6Study Published in Journal of Clinical Oncology Reports Talimogene Laherparepvec Improvesdurable Responses in Patients with Advanced Melanoma 2
... Aida,Pharmaceuticals, Inc. (OTC Bulletin Board: AIDA) today announced an ... to be launched by,the Company into the China market. ... I tests in July 2006, which consists of tests,for ... tested in,Phases II & III. Aida is currently undergoing ...
... and DETROIT, Oct. 22 The Michigan Life,Science ... rapidly,stimulate new business for Michigan companies. (Photo: ... BioPharma Company, LLC and the Michigan Virtual,Medical Device ... exhibit during,the MichBio Expo convention in Lansing, Michigan. ...
... Highlight and ... of Advanced Practices by Leading, Interventionalists, Broadcast from Around the World. - Hear About ... Stent, Results. - See How Many of the Major Fixed Imaging and Stent Manufacturers ... are Embracing IVUS., ...
Cached Biology Technology:Aida's Rh-Apo2L Clinical Testing Shows Preliminary Efficacy in Helping to Treat Lung Cancer, Stomach Cancer, Lymphoma, Pancreatic Cancer & Kidney Cancer 2Aida's Rh-Apo2L Clinical Testing Shows Preliminary Efficacy in Helping to Treat Lung Cancer, Stomach Cancer, Lymphoma, Pancreatic Cancer & Kidney Cancer 3Virtual Life Science Companies Launch and Tour 2Virtual Life Science Companies Launch and Tour 3Volcano Announces Activities at TCT 2007: Expanded Role of IVUS in PCI to be Demonstrated 2Volcano Announces Activities at TCT 2007: Expanded Role of IVUS in PCI to be Demonstrated 3Volcano Announces Activities at TCT 2007: Expanded Role of IVUS in PCI to be Demonstrated 4
Request Info...
... Accurate To score SNPs, ... sequencing, the gold standard in DNA analysis. ... The polymorphic locus can be confirmed by ... DNA sequencing also provides sequence context information, ...
... top-of-the-line PowerPac 3000 power supply is ... ideal for isoelectric focusing, DNA sequencing, ... electrophoresis, western blotting, and submerged gel ... of powre, the PowerPac 3000 power ...
... GT cell and PowerPac basic power supply are ... acids in agarose gels. The wide mini format ... and electrodes, and leveling bubble. The PowerPac basic ... of 10-300 V, 4-400 mA, and 75 W. ...
Biology Products: