Navigation Links
New study illustrates shifting biomes in Alaska
Date:2/21/2011

A new study released today in the EarlyView of Ecology Letters addresses forest productivity trends in Alaska, highlighting a shift in biomes caused by a warming climate. The findings, conducted by scientists at the Woods Hole Research Center and three other institutions based in Alaska and France, linked satellite observations with an extensive and unique tree-ring data set. Patterns observed support current hypotheses regarding increased growth of evergreen forest at the margins of present tundra and declining productivity at the margins of temperate forest to the south. This study provides a regional picture of forest productivity which did not previously exist.

According to lead author Pieter Beck, a post-doctoral fellow at WHRC, "The results provide evidence for the initiation of a biome shift in response to climate change, and indicate that some ecosystem models may be missing fundamental changes taking place in the circumpolar region."

He adds that "while the findings contrast with some recent model predictions of increased high latitude vegetation productivity, they are consistent with longer-term projections of global vegetation models."

Scott Goetz, a senior scientist at WHRC, proposed the study and co-authored the manuscript. He says, "Most people don't think of high latitudes forests as being drought stressed - and they are not in the traditional sense of having soils dry up and blow away - but their growth is negatively impacted by hot dry air masses and those have increased in recent years. This paper shows those drought impacts are captured in both the satellite and the tree ring record. Of course the tree rings go back in time much further than the satellite observations, which only extend about 30 years, but the changes that we observe from satellites are clearly supported not only by the tree rings but also by carbon isotope analysis of the wood."

Beck adds that climate driven changes in the disturbance regime, which can rapidly alter forest dynamics and the ability of boreal forests to migrate into current tundra areas, will most likely shape the biome shift in the future.


'/>"/>

Contact: Elizabeth Braun
ebraun@whrc.org
508-444-1509
Woods Hole Research Center
Source:Eurekalert

Related biology news :

1. NIFA announces grants to study the effects of climate change on agricultural and forest production
2. Study suggests statins may prevent diabetic-related blindness
3. First-of-its-kind study shows benefits of electrical stimulation therapy for people paralyzed by spinal cord injury
4. Designing new molecular tools to study the life and death of a cancer cell
5. Scripps Research study sheds light on RNA on/off switches
6. Study finds massive flux of gas, in addition to liquid oil, at BP well blowout in Gulf
7. Pulmonary fibrosis inhibited by pentraxin-2/SAP in research study
8. NSF funds study of landscape restoration effects on Pennsylvania stream
9. VTT to study one of worlds oldest beers
10. Brandeis study shows economic impact of dengue virus in Americas
11. Field study of smoggy inversions to end
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/15/2016)... New York , June 15, 2016 /PRNewswire/ ... a new market report titled "Gesture Recognition Market by ... and Forecast, 2016 - 2024". According to the report, ... USD 11.60 billion in 2015 and is estimated ... reach USD 48.56 billion by 2024.  ...
(Date:6/2/2016)... , June 2, 2016 The ... has awarded the 44 million US Dollar project, for ... Embossed Vehicle Plates including Personalization, Enrolment, and IT Infrastructure ... leader in the production and implementation of Identity Management Solutions. ... January, however Decatur was selected for ...
(Date:5/20/2016)... , May 20, 2016  VoiceIt is excited ... with VoicePass. By working together, VoiceIt ...  Because VoiceIt and VoicePass take slightly different approaches ... increases both security and usability. ... about this new partnership. "This marketing ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... ... regulatory and technical consulting, provides a free webinar on Performing Quality ... 13, 2016 at 12pm CT at no charge. , Incomplete investigations are still ...
(Date:6/23/2016)... 2016  Amgen (NASDAQ: AMGN ) today ... life sciences incubator to accelerate the development of ... space at QB3@953 was created to help high-potential life ... many early stage organizations - access to laboratory infrastructure. ... launched two "Amgen Golden Ticket" awards, providing each winner ...
(Date:6/22/2016)... SAN DIEGO , June 22, 2016 /PRNewswire/ ... partnership that will allow them to produce up ... (HiPSC) from one lot within one week. These ... their time laboriously preparing cells and spend more ... made possible through a proprietary, high-volume manufacturing process ...
(Date:6/22/2016)... 2016  According to Kalorama Information, the dominant ... market include significant efforts in automation as well ... and affordable sequencers, say the healthcare market research ... including sample prep materials.  The healthcare market research ... for Next Generation Sequencing (NGS) , highlights major ...
Breaking Biology Technology: