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:6/30/2015)... 30, 2015 To bolster its efforts and commitment ... announced today the addition of two new team members. ... advisor and David Raviv will act as head ... Corp.,s commitment to providing the most secure solutions for the ... co-founded Layer 7 Technologies, a provider of security and management ...
(Date:6/30/2015)... 2015 Genisphere announced Tom ... help further develop Genisphere,s therapeutics capabilities and portfolio. Mr. ... spent much of the last 25 years in leadership ... and Johnson & Johnson. Tom started his career in ... Corporate Finance. He graduated from Dartmouth College with a ...
(Date:6/29/2015)... -- Research and Markets( http://www.researchandmarkets.com/research/zj7h4f/latin_america ) ... Biomedical Sensors Market - Growth, Trends & Forecasts (2014-2020)" ... America Biomedical Sensors market is estimated at $0.65 billion ... period 2014-2020 The near future will bring ... of each individual. These sensors can be set to ...
Breaking Biology News(10 mins):HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 3Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3Latin America Biomedical Sensors Market Report 2015-2020 2
... genetic and geographic data of the H5N1 avian flu ... They found that multiple strains of the virus originated ... many of the migration routes through which the strains ... strains develop and migrate, health officials can better limit ...
... hold a key to defeating another implacable foe: HIV. ... a drastically weakened rabies virus to ferry HIV-related proteins ... disease. The early evidence shows that the vaccine ?which ... , Reporting April 1, 2007 in the Journal of ...
... squeaky voices, but now helium is also helping people ... at the University of Alberta in Edmonton, Canada have ... oxygen allowed patients with chronic obstructive pulmonary disease (COPD) ... 245 per cent. COPD is a disease of the ...
Cached Biology News:UCI scientists reconstruct migration of avian flu virus 2Jefferson scientists find rabies-based vaccine could be effective against HIV 2Helium helps patients breathe easier 2
(Date:6/29/2015)... BioNano Genomics, Inc., the leader in genome ... today that a collaboration led by the Icahn School ... of the first comprehensive analysis of a diploid human ... sequencing and genome mapping. This study, published today in ... the contiguous diploid human genome assembly obtained without using ...
(Date:6/29/2015)... Ga. , June 29, 2015  MiMedx Group, ... company utilizing human amniotic tissue and patent-protected processes to ... Wound Care, Surgical, Orthopedic, Spine, Sports Medicine, Ophthalmic and ... CEO, Parker H. "Pete" Petit, has been awarded the ... Year® 2015 Southeast Program. The Entrepreneur ...
(Date:6/29/2015)... 2015 According to a new market ... Application (Diagnostics, Therapeutics, R&D), by Technology (SELEX, Other Technologies), by ... - Global Forecast to 2020", published by MarketsandMarkets, the global ... from $107.56 Million in 2015, at a CAGR of 17.89%. ... 67 F igures spread through 125 ...
(Date:6/29/2015)... SOUTH SAN FRANCISCO, Calif. , June 29, 2015 ... a molecular diagnostics company pioneering the field of molecular ... the Bay Area News Group,s prestigious Top Workplaces list ... group selects Top Workplace winners based solely on an ... "We are humbled and honored that the degree to ...
Breaking Biology Technology:BioNano Mapping Technology Achieves Most Contiguous Clone-free Human Genome Assembly to Date 2BioNano Mapping Technology Achieves Most Contiguous Clone-free Human Genome Assembly to Date 3EY Entrepreneur Of The Year Program Recognizes Pete Petit, The Chairman & CEO of MiMedx 2Aptamers Market Worth $244.93 Million by 2020 2Aptamers Market Worth $244.93 Million by 2020 3Aptamers Market Worth $244.93 Million by 2020 4Veracyte Named a 2015 "Top Workplace" in the San Francisco Bay Area 2Veracyte Named a 2015 "Top Workplace" in the San Francisco Bay Area 3
... Wis. - Tushaus Computer Services , which ... Millennium Design, Inc., a provider of Apple products and ... PCs and Macs, but also intellectual property and technology ... organizations. Financial terms of the deal were not disclosed. ...
... - The latest piece of the University of ... is in place. With the help of two corporate sponsors, ... fund-raising arm designed to promote technology transfer. , ,The foundation, ... has received $1 million in seed funding from both ...
... It's not too early to gauge the level of ... company formed by Beth Donley and University of ... already is rubbing elbows with interested investors, particularly angels, ... for eventually attracting big dollars from venture capitalists involves ...
Cached Biology Technology:UWM launches research foundation 2UW scientist, former WiCell director found stem cell company 2UW scientist, former WiCell director found stem cell company 3
...
... trays and universal trays make vessel ... Shaking speed: 40 - ... amplitude Clamps for Erlenmeyer ... including Fernbach flasks Hinged ...
... convenient, and efficient Denatured protein concentration following ... spin column to make handling easy. The ... which were electro-eluted in their Denatured condition. ... high binding capacity fo all pH values. ...
In Western blotting antibodies recognize 94 K protein band, which corresponds to S-layer protein...
Biology Products: