Navigation Links
Beetle-infested pine trees contribute more to air pollution and haze in forests
Date:5/23/2012

The hordes of bark beetles that have bored their way through more than 6 billion trees in the western U.S. and British Columbia since the 1990s do more than damage and kill stately pine, spruce and other trees. A new study finds that these pests can make trees release up to 20 times more of the organic substances that foster haze and air pollution in forested areas. It appears in ACS' journal Environmental Science & Technology.

Kara Huff Hartz, Gannet Hallar and colleagues explain that western North America is experiencing a population explosion of mountain pine beetles, a type of bark beetle that damages and kills pines and other trees. The beetles bore into the bark of pine trees to lay eggs. Gases, called volatile organic compounds (VOCs), which act as defense mechanisms against the beetles, are released from the bore holes. VOCs, however, also contribute to the smog and haze that obscures views of natural landscapes in U.S. National Parks and other nature areas where tourists gather in the summertime. To determine exactly how beetle attacks affect the atmosphere, the researchers measured VOC levels in the air near healthy and infected pine trees.

They found that beetle-infested trees release up to 20 times more VOCs than healthy trees near the ground surface. The predominant type of VOC was a monoterpene called -phellandrene. The data suggest that the bark beetle epidemic in the western U.S. could have led to higher monoterpene concentrations in the air that can contribute to haze, which can harm human health, reduce visibility and impact climate, say the researchers.


'/>"/>
Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Page: 1

Related biology news :

1. Shade trees can protect coffee crops
2. Diversity of trees in Ecuadors Amazon rainforest defies simple explanation
3. Urban trees enhance water infiltration
4. Forest inventories in Oregon include more than trees
5. Forest inventories in California include more than trees
6. Flame retardants prove ineffective on fresh-cut Christmas trees
7. Flame retardants prove ineffective on fresh-cut Christmas trees
8. Trees wont stop tsunamis, scientists warn
9. Organic plant waste proves effective weed control for citrus trees
10. California study shows shade trees reduce summertime electricity use
11. Study finds hemlock trees dying rapidly, affecting forest carbon cycle
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/20/2016)... 20, 2016   Valencell , the leading ... STMicroelectronics (NYSE: STM), a global semiconductor leader ... announced today the launch of a new, highly ... that includes ST,s compact SensorTile turnkey ... biometric sensor system. Together, SensorTile and Benchmark deliver ...
(Date:12/16/2016)... , Dec. 16, 2016 The global wearable medical device ... billion by 2021 from USD 5.31 billion in 2016, at a ... ... driven by technological advancements in medical devices, launch of a growing ... for wireless connectivity among healthcare providers, and increasing focus on physical ...
(Date:12/15/2016)... Advancements in biometrics will radically ... wellbeing (HWW), and security of vehicles by ... vehicles begin to feature fingerprint recognition, iris ... monitoring, brain wave monitoring, stress detection, fatigue ... detection. These will be driven by built-in, ...
Breaking Biology News(10 mins):
(Date:1/12/2017)... WASHINGTON, DC , January 12, 2017 ... set up the world,s biggest facility for producing mycorrhizae. ... translated the nutrient tapping potential of mycorrhizae and developed ... ...      (Logo: http://mma.prnewswire.com/media/456932/PRNE_TERI_Logo.jpg) The TERI ...
(Date:1/12/2017)... ... January 12, 2017 , ... ... RURO has enhanced the platform to accommodate increasingly complex and sophisticated deployments, ... searching, and more. In addition to these improvements, the latest release brings ...
(Date:1/11/2017)... ... January 11, 2017 , ... Photonics industry and ... , are commending the U.S. Congress and President Obama for their recognition of ... of the American Innovation and Competitiveness Act (AICA). , The language of the ...
(Date:1/11/2017)... ... January 11, 2017 , ... Microbial ... ground-breaking microbiome studies. Its most recent microbiome impact grant award has been made ... the effect of long-term use of oral antibiotics, prescribed for skin conditions, on ...
Breaking Biology Technology: