Navigation Links
4,000-year study supports use of prescribed burns in Southern Appalachians
Date:4/6/2010

he relative absence of fire over the past 250 years has altered forest composition and structure significantly, Christensen said.

"The vegetation we see today in the region is very different from what was there thousands or even hundreds of years ago," he said. "Early explorers and settlers often described well-spaced woodlands with open grassy understories indicative of high-frequency, low-intensity fires, and a prevalence of fire-adapted species like oak, hickory and chestnut, with pitch pines and other (low-moisture) species on ridgetops. Today we find more species typical of moist ecosystems. They've moved out of the lower-elevation streamsides and coves, up the hillsides and onto the ridges."

The study was funded by the U.S. Forest Service. It was conducted at the Wine Spring Creek Ecosystem Management Area on the western slope of the Nantahala Mountains, at elevations between 1280 and 1430 meters.

Aside from historic and scientific interest, knowing more about pre-settlement fire regimes in the region may help forest managers today understand the likely responses of species to the increased use of prescribed fire for understory fuel management, Christensen said.

However, he cautioned that because of widespread changes that have occurred in the forests as a result of centuries of fire suppression and other human activities, as well as climatic changes, "prescribed burns may or may not behave similarly to fires that occurred in the past. Fires today likely would burn hotter and more intensely than fires did in the past.

"Also, although history tells us what could be restored, it doesn't tell us what should be restored," he added. "That depends on which species, habitats and ecosystem services we wish to conserve."

The study was co-authored by Kurt A. Fesenmyer, a former student of Christiansen who is now a geographic information systems (GIS) specialist with Trout Unlimited in Boise, Idaho.

Ch
'/>"/>

Contact: Tim Lucas
tdlucas@duke.edu
919-613-8084
Duke University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. 4,000-year-old coral beds among worlds oldest living things, prof says
2. New study shows rising water temperatures in US streams and rivers
3. MSU leads global effort to study link between people, planet
4. Peregrine reports new study from Duke shows anti-HIV potential of targeting PS on cells
5. Out of this world: New study investigates infection of human cells in space
6. Study reveals that logging debris suppresses development of an invasive competitor, Scotch broom
7. NYSCF fellow lead author on study that derives floor plate tissue from embryonic stem cells
8. VARI study could improve treatments for prostate cancer
9. LSU researcher receives grant to study equine adult stem cells
10. Grocery shoppers who try harder to track costs do worse, study finds
11. Study uses Chinese wolfberries to improve vision imperfections caused by type-2 diabetes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/11/2015)... , Mar. 11, 2015 Research and Markets ... the "Access Control Market by Product, Application & ... report to their offering. , This ... to reach $10.4 billion by 2020, with an estimated ... report covers the products types such as contact cards ...
(Date:3/10/2015)...  NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce ... been named the "Number One Best Tech Gift ... Modern ( http://www.rethinkmodern.com/ ) is a web magazine focused ... that have a unique function or design.  ...
(Date:3/2/2015)... Ala. , March 2, 2015  Businesses ... processing. Data protection company Tharon Rankins Enterprises has ... that provides an ultra-safe way for businesses to ... their financial transactions. Beconux is ... Tharon Rankins Enterprises. Functioning similarly to an ATM ...
Breaking Biology News(10 mins):Global Access Control (Cards & Readers, Biometrics, Controllers, Management Software) Market 2015-2020 - Analysis of the $10 Billion Market 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4Personal Data Protection Company Launches New Product 2
... University of the Negev researchers have developed techniques to ... adapt to hostile growing environments. In a recent ... Cell , BGU researchers were able show that by ... growth. Lateral root (LR) development is a highly regulated ...
... a paper published today in PNAS, scientists from the ... new insights into the workings of enzymes from a ... bacterium that causes tuberculosis. The new findings present possible ... pathogen but leave other microorganisms, which are beneficial to ...
... OAK RIDGE, Tenn., Feb. 14, 2011 -- Bioethanol ... become less costly because of plant engineering by The ... Ridge National Laboratory. In a paper published in ... , researchers describe their transgenic version of switchgrass as ...
Cached Biology News:2 in 1: Multi-tasking protein provides new approaches for anti-tuberculosis drugs 2New lignin 'lite' switchgrass boosts biofuel yield by more than one-third 2
(Date:3/26/2015)... The Market Element LLC, a leading inbound ... Designing Gig LLC to provide website design, development, and ... this alliance with Designing Gig represents a pivotal moment ... comprehensive, end-to-end, digital solution for our clients, which now ... Miller, president of The Market Element. “For small and ...
(Date:3/26/2015)... March 26, 2015 PAREXEL International ... clinical research organization , announced today ... agreement to acquire all of the business ... leading provider of specialized pharmacovigilance services, based ... collection, detection, assessment, monitoring, and prevention of ...
(Date:3/26/2015)... (PRWEB) March 26, 2015 WriteResult, a ... with researchers from Yale University’s School of Public Health ... study participants during a 4 month-long project. The goal ... providing low income families with free access to fresh ... and diet-related health concerns like high blood pressure, diabetes ...
(Date:3/25/2015)... ROCKVILLE, Md. , March 25, 2015 ... for the Vaccine Industry Excellence (ViE) Award "Best Clinical ... second consecutive year that Optimal has been selected as ... World Vaccine Congress, receiving a "Highly Recommended" distinction in ... generate recognition of the efforts, accomplishments, and positive contributions ...
Breaking Biology Technology:The Market Element LLC and Designing Gig LLC Form Strategic Alliance 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 2PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 3PAREXEL Announces Execution of Definitive Agreement to Acquire Quantum Solutions India, Strengthening Leadership In Pharmacovigilance Services 4Yale and New Haven Farms Improving Patient Health with WriteResult's myPROpad™ 2Yale and New Haven Farms Improving Patient Health with WriteResult's myPROpad™ 3Optimal Research Nominated 2015 Vaccine Industry Excellence (ViE) Award 2
... , , , , , , For 124 high-purity plasmid minipreps , ... Spin columns, , , ... , , Purification module: , ... Throughput: , 124 samples, , ...
... , , , , For purification of PCR products in low elution , volumes , ... Application: , PCR product cleanup, , ... Spin columns, , , Throughput: , ... DNA size range: , 70 bp 4 kb*, ...
... , , , , , ... System for cost-effective, fully automated, high-throughput DNA purification , ... chemistry eliminates the need , for a lysate ... a single plate and a simple bindwashelute procedure. The protocol , ...
Cached Biology Technology:DirectPrep 96 Miniprep System for cost-effective, high-throughput plasmid , DNA purification 2DirectPrep 96 Miniprep System for cost-effective, high-throughput plasmid , DNA purification 3DirectPrep 96 Miniprep System for cost-effective, high-throughput plasmid , DNA purification 4