Navigation Links
Scientists use lasers to measure changes to tropical forests
Date:1/23/2009

HILO, Hawaii January 23, 2009New technology deployed on airplanes is helping scientists quantify landscape-scale changes occurring to Big Island tropical forests from non-native plants and other environmental factors that affect carbon sequestration.

U.S. Forest Service and Carnegie Institution scientists involved in the research published their findings this month in the journal Ecosystems and hope it will help other researchers racing to assess threats to tropical forests around the world.

"Our results clearly show the interactive role that climate and invasive species play on carbon stocks in tropical forests, and this may prove useful in projecting future changes in carbon sequestration in Hawaii and beyond," said Gregory Asner, with the Carnegie Institution's Department of Global Ecology.

Airborne technology might be the best way to quickly examine rugged ecosystems covered with dense vegetation that make them difficult to study on the ground or with satellites, according to the scientists.

"These findings showed airborne data correlated with data derived from study plots on the ground," said Flint Hughes, a Forest Service ecologist at the agency's Institute of Pacific Islands Forestry and one of the study's authors. "They also demonstrated what might be the most important environmental factors affecting forest biomass and carbon sequestration."

Hughes and his colleagues compared field measurements with data derived from the Carnegie Airborne Observatory (http://cao.stanford.edu/), a system that uses a combination of lasers capable of measuring elevation to within six inches, GPS and advanced imaging spectrometers that can identify plant species from aircraft.

The scientists placed the equipment on an airplane that flew over the northeast flank of the Mauna Kea Volcano and the Hawaii Experimental Tropical Forest, which the National Science Foundation has designated a National Ecological Observatory Network candidate site.

They then compared the information to field observations that included tree diameter, canopy height and wood density estimates. Their findings not only demonstrated the effectiveness of airborne observations, but also offered a landscape-scale view of how alien invasive plants like strawberry guava might affect biomass levels in the context of carbon sequestration and climate change mitigation.

Study results suggest fast-growing invaders decrease biomass levels, while slower-growing species increase biomass stocks.


'/>"/>

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

Related biology news :

1. Scientists unlock possible aging secret in genetically altered fruit fly
2. Jefferson scientists discover a key protein regulator of inflammation and cell death
3. MUHC and McGill scientists explain genetic disease first discovered in Quebec 24 years ago
4. Scientists uncover evolutionary keys to common birth disorders
5. Invasive plants challenge scientists in face of environmental change
6. Key to future medical breakthroughs is systems biology, say leading European scientists
7. Scripps scientists develop first examples of RNA that replicates itself indefinitely
8. Florida professor creates endowment for insect scientists
9. NYU scientists discover dangerous new method for bacterial toxin transfer
10. Scientists can now differentiate between healthy cells and cancer cells
11. Scientists make strides toward defining genetic signature of Alzheimers disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/4/2017)... April 4, 2017   EyeLock LLC , a ... the United States Patent and Trademark Office (USPTO) has ... the linking of an iris image with a face ... represents the company,s 45 th issued patent. ... very timely given the multi-modal biometric capabilities that have ...
(Date:3/30/2017)... -- The research team of The Hong Kong Polytechnic ... by adopting ground breaking 3D fingerprint minutiae recovery and matching technology, ... accuracy for use in identification, crime investigation, immigration control, security of ... ... A research team led by Dr ...
(Date:3/28/2017)... PUNE, India , March 28, 2017 ... (Analog, IP, Biometrics), Hardware (Camera, Monitors, Servers, Storage Devices), ... Maintenance), Vertical, and Region - Global Forecast to 2022", ... 30.37 Billion in 2016 and is projected to reach ... 15.4% between 2017 and 2022. The base year considered ...
Breaking Biology News(10 mins):
(Date:5/21/2017)... CA (PRWEB) , ... May 19, 2017 , ... ... annual meeting and educational conference of the American Association of Bioanalysts (AAB) and ... Galleria Hotel in Houston. The conference reinforces AAB’s commitment to excellence in clinical ...
(Date:5/19/2017)... (PRWEB) , ... May 19, 2017 , ... ... QED Proof-of-Concept Program. Academic researchers with technologies ripe for commercialization, and who ... Jersey and Delaware, are encouraged to submit proposals. QED, now in its tenth ...
(Date:5/18/2017)... ... ... Clinical Supplies Management (“CSM”), a Great Point Partners II (“GPP”) portfolio company, ... has doubled in size over the past six months with the acquisition of businesses ... joins CSM as Chief Financial Officer. Roger has over 25 years of experience ...
(Date:5/18/2017)... (PRWEB) , ... May 17, 2017 , ... ... specializing in medical device compliance and commercialization, has just released version 9.0 of ... work into this latest version of Cockpit,” says David Cronin, CEO of Cognition. ...
Breaking Biology Technology: