Navigation Links
Faster koa tree growth without adverse ecosystem effects
Date:3/27/2008

U.S. Forest Service scientists with the Institute of Pacific Islands Forestry have completed a study on ways to make high-value koa trees grow faster, while increasing biodiversity, carbon sequestration, scenic beauty and recreation opportunities in native Hawaian forests.

Acacia koa is a native Hawaian hardwood tree that traditionally has been prized as a craft and furniture-making wood. Its range has been greatly reduced because of logging and land clearing for agricultural production.

Scientists involved in the study have published their findings in the April edition of Forest Ecology and Management, a scientific journal covering forest ecosystems worldwide. The article is entitled, Understory Structure in a 23-Year-Old Acacia Koa Forest and Two-Year Growth Responses to Silvicultural Treatments.

Previous studies have shown that a lack of knowledge about koa tree production has hampered commercial forestry investment efforts in Hawai.

Scientists in this study began to fill this knowledge gap in 2002 when they started measuring how koa trees respond to the thinning of competing trees and the application of fertilizers. They were also concerned about how the trees and understory plants responded to chemical control of non-native grasses because about 20 percent of endangered plants in Hawai are understory species found in koa forests.

They found the potential koa crop trees in the test area on the eastern slope of Mauna Loa annually increased their stem diameter at chest height by nearly 120 percent.

In addition, they found the treatments did not adversely affect the growth of native understory plants and non-native grasses did not grow more where tree thinning had occurred. Scientists even found fertilizers reduced the growth of these alien grasses when compared to unfertilized test plots.

The studys findings also showed the treatments were either neutral or beneficial to forest bird habitat, an important consideration because many trees in koa forests bear fleshy fruits or provide habitat for insects eaten by many Hawaian birds.

Our findings indicate the use of low-impact silvicultural treatments in young koa stands not only increases wood production, but also is compatible with maintenance of healthy, intact native understory vegetation, said Paul


'/>"/>

Contact: Roland Giller
rgiller@fs.fed.us
510-559-6327
US Forest Service, Pacific Southwest Research Station
Source:Eurekalert  

Related biology news :

1. New membrane strips carbon dioxide from natural gas faster and better
2. Popular apple variety harbors unusual cell growth
3. Yale scientists show that a microRNA can reduce lung cancer growth
4. New UC analysis shows alarming increase in expected growth of Chinas carbon dioxide emissions
5. Alarming growth in expected CO2 emissions in China, finds UC analysis
6. A compound extracted from olives inhibits cancer cells growth and prevents their appearance
7. Nitrogen pollution boosts plant growth in tropics by 20 percent
8. New treatment boosts bone healing and regrowth
9. Gene dose affects tumor growth
10. Researchers discover protein that controls bone growth
11. Titanium Group Announces Launch of New Identification Solution Targeting High Growth Retail Sector
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Faster koa tree growth without adverse ecosystem effects
(Date:3/10/2016)... 2016   Unisys Corporation (NYSE: UIS ) ... (CBP) is testing its biometric identity solution at the Otay ... to help identify certain non-U.S. citizens leaving the country. ... to help determine the efficiency and accuracy of using biometric ... will run until May 2016. --> the ...
(Date:3/9/2016)... GARDENS, Fla. , March 9, 2016 /PRNewswire/ ... management authentication and enrollment solutions, today announced the ... DigitalPersona ® Altus multi-factor authentication platform. ... and InfoSec managers to step-up security where it,s ... Washington, DC . ...
(Date:3/3/2016)... , March 3, 2016  2016FLEX, organized ... this week highlighting advancements in flexible, hybrid and ... record setting attendance - have gathered for short ... fast-growing field of electronics. The Flex Conference celebrates ... point for companies, R&D organizations, and universities contributing ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... April 27, 2016 , ... Global Stem Cells Group and ... Symposium as other research and development initiatives for potential stem cell protocol management for ... Stem Cells Group executives began meeting to establish a working agenda and foster initiatives ...
(Date:4/27/2016)... , April 27, 2016 ... research report with specific focus on US, EU, ... Japan , to the healthcare business intelligence ... library. Complete report on the Flow ... companies and supported with 282 tables and figures ...
(Date:4/26/2016)... (PRWEB) , ... April 26, 2016 , ... ... today announced that Ardy Arianpour has joined the company as Chief Business Officer. ... experience bringing innovative genomic technologies to market, was most recently Chief Commercial Officer ...
(Date:4/26/2016)... ... 26, 2016 , ... Heidelberg Instruments, a leader in design, ... its Volume Pattern Generator (VPG) line of lithography systems. The breakthrough VPG+ system ... as a solution for mid volume direct write lithography applications. It utilizes ...
Breaking Biology Technology: