Navigation Links
Forests could benefit when fall color comes late
Date:1/22/2008

Do those fall colors seem to show up later and laterif at all? Scientists say we can blame increasing amounts of carbon dioxide in the atmosphere for prolonging the growing season of the trees. And that may actually be good news for forestry industries.

Writing in the current issue of the journal Global Change Biology, Michigan Technological University Professor David F. Karnosky and colleagues from two continents present evidence that rising carbon dioxide levels in the atmosphere act directly to delay the usual autumn spectacle of changing colors and falling leaves in northern hardwood forests.

Basically, this is a good-news story for our regions forests, said Karnosky. It suggests that they will become a bit more productive due to the extra carbon being taken up in the autumn, along with the increased photosynthesis throughout the growing season.

The Michigan Tech professor of forest resources and environmental science and colleagues from Illinois, Wisconsin, Belgium, England, Estonia and Italy collected and analyzed data over two years on what they call autumnal senescence or the changing of colors and falling of leaves as photosynthesis decreases. They studied forests near Rhinelander, Wisconsin, and Tuscania, Italy.

They found that the forests on both continents stayed greener longer as CO2 levels rose, independent of temperature changes. However, the experiments were too brief to indicate how mature forests may be impacted over time. Also, Karnoskys research in Wisconsin suggests that other factors, such as increasing ozone levels in the part of the atmosphere closest to the ground, can negate the beneficial effects of elevated carbon dioxide.

The studys results are another example of an expanding body of scientific evidence that global climate change is affecting the worlds forests. There has been plenty of evidence gathered previously to show that increased carbon dioxide in the atmosphere is causing tree growth to begin earlier in the spring, but until now, most scientists believed that other factors, such as temperature and length of day, were the primary elements influencing autumnal senescence.


'/>"/>

Contact: Jennifer Donovan
jdonovan@mtu.edu
906-487-4521
Michigan Technological University
Source:Eurekalert

Related biology news :

1. No convincing evidence for decline in tropical forests
2. Carbon sink capacity in northern forests reduced by global warming
3. New carbon calculator conserves forests
4. Beetle dung helps forests recover from fire
5. European Union forests expanding, absorbing carbon at surprisingly high rate: study
6. Univ. of Arizona receives $2.5 million to study Amazon forests and climate change
7. Wildfire drives carbon levels in northern forests
8. Why do so many species live in tropical forests and coral reefs?
9. Study shows housing development on the rise near national forests
10. Upper Midwest forests are losing diversity, complexity, ISU study finds
11. Researchers discover forests of endangered tropical kelp
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/21/2016)... 2016 --> ... research report "Emotion Detection and Recognition Market by Technology (Bio-Sensors, ... Expression, Voice Recognition and Others), Services, Application Areas, ... 2020", published by MarketsandMarkets, the global Emotion Detection ... 22.65 Billion by 2020, at a CAGR of ...
(Date:1/20/2016)... JOSE, Calif. , Jan. 20, 2016 /PRNewswire/ ... developer of human interface solutions, today announced sampling ... controller solution for wearables and small screen applications ... such as printers. Supporting round and rectangular shapes, ... S1423 offers excellent performance with moisture on screen, ...
(Date:1/13/2016)... 13, 2016 --> ... new market report titled - Biometric Sensors Market - Global ... - 2023. According to the report, the global biometric sensors market was ... to reach US$1,625.8 mn by 2023, expanding at a ... of volume, the biometric sensors market is expected to ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... , Feb. 11, 2016   BioInformant ... report, "Stem Cell Research Products, Opportunities, Tools, and Technologies ... ... in the stem cell industry, BioInformant has more than ... the stem cell market, by stem cell type. This ...
(Date:2/10/2016)... /PRNewswire/ - BioAmber Inc. (NYSE: BIOA ), a ... Mitsui & Co. Ltd., its partner in the ... investing an additional CDN$25 million in the joint venture ... 30% to 40%.  Mitsui will also play a stronger ... Sarnia , providing dedicated resources alongside ...
(Date:2/10/2016)... -- ASAE is introducing a hybrid membership model which ... option of joining or renewing through an organizational purchasing ... size, every employee in any size association or AMC ... available member benefits.   John H. Graham, ... will allow organizations of any size and their employees ...
(Date:2/10/2016)... 10, 2016  Matchbook, Inc., a company specializing ... biotech companies, announced today the appointment of ... Jim brings nearly 25 years of experience in ... spent nearly two decades in executive level roles ... at Genzyme and, most recently headed global logistics ...
Breaking Biology Technology: