Navigation Links
Walnut trees may not be able to withstand climate change
Date:11/29/2011

WEST LAFAYETTE, Ind. - Warmer, drier summers and extreme weather events considered possible as the climate changes would be especially troublesome - possibly fatal - for walnut trees, according to research at Purdue University.

Over five years, Douglass Jacobs, a professor of forestry and natural resources, and Martin-Michel Gauthier, a former doctoral student under Jacobs who is now a research scientist in the Ministry of Natural Resources in Quebec, studied the physiology of walnut trees, which are economically significant in Indiana for their lumber and veneer, and in other areas for their nuts. They found that the trees are especially sensitive to particular climates.

"Walnut is really restricted to sites not too wet or dry. It has an extremely narrow range," said Jacobs, whose findings were published in the December issue of Annals of Forest Science. "We suspect and predict that climate change is going to have a real impact on walnuts. We may see some type of decline of the species."

Specifically, walnuts would have difficulty tolerating droughts that could be associated with a changing climate.

"Changes in moisture could restrict its ability to survive without irrigation," Jacobs said. "Almost all climate change models predict that climates will become drier."

Walnuts are also sensitive to cold, so much so that they have developed a defense mechanism against late frosts. Jacobs said walnut trees don't begin sprouting leaves until almost a month after other trees in the spring.

That defense mechanism could be compromised by extreme weather events associated with climate change scenarios. Late spring frosts after walnuts have developed leaves could kill trees.

"That, on top of the increase in temperatures, would be a problem for walnut," Gauthier said. "The trees would basically shut down."

In California, more than 500,000 tons of walnuts were sold for more than $1 billion
'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Walnuts slow prostate tumors in mice
2. Walnuts, walnut oil, improve reaction to stress
3. Breast cancer risk drops when diet includes walnuts, Marshall researchers find
4. Shade trees can protect coffee crops
5. Diversity of trees in Ecuadors Amazon rainforest defies simple explanation
6. Urban trees enhance water infiltration
7. Forest inventories in Oregon include more than trees
8. Forest inventories in California include more than trees
9. Flame retardants prove ineffective on fresh-cut Christmas trees
10. Flame retardants prove ineffective on fresh-cut Christmas trees
11. Trees wont stop tsunamis, scientists warn
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Walnut trees may not be able to withstand climate change
(Date:7/24/2014)... NY (July 24, 2014) Scientists at The ... are one step closer to creating a viable ... patient,s own cells. , For the first ... cells lines from skin samples of patients with ... an accelerated protocol to induce these stem cells ...
(Date:7/24/2014)... has different effects on different species of fish, ... of Bristol and Exeter which tested fish anti-predator ... a flying seagull predator model when exposed to ... European minnows. , Lead author Dr Irene ... "Noise levels in many aquatic environments have increased ...
(Date:7/24/2014)... planet,s current biodiversity, the product of 3.5 billion years ... the history of life. But it may be reaching ... scientific literature and analysis of data published in ... the loss and decline of animals is contributing to ... planet,s sixth mass biological extinction event. , Since 1500, ...
Breaking Biology News(10 mins):NYSCF scientists 1 step closer to cell therapy for multiple sclerosis patients 2Stanford biologist warns of early stages of Earth's 6th mass extinction event 2Stanford biologist warns of early stages of Earth's 6th mass extinction event 3
... of St Andrews have developed a new method of ... technique, which is cheap and powerful, could have important ... Optical technology has huge potential for novel developments in ... groups in this area. The new method -which involves ...
... University in St. Louis have discovered an entirely new ... in plant flowering and DNA methylation, a key chemical ... headed by Craig Pikaard, Ph, D., Washington University professor ... fourth kind of RNA polymerase found only in plants ...
... University of California, San Diego has discovered a molecule ... toxin, or Bt toxin--a pesticide produced by bacteria and ... crops to ward off insect pests. , Their findings ... to prevent insects, which the researchers believe also possess ...
Cached Biology News:New methods of gene delivery using lasers 2New RNA polymerase discovered in plants 2New RNA polymerase discovered in plants 3UCSD discovery may help extend life of natural pesticide 2UCSD discovery may help extend life of natural pesticide 3
(Date:7/24/2014)... natural and synthetic processes prefer to settle into ... energyit is within the realm of non-equilibrium conditions ... changes in energy and phases, such as temperature ... allow humans to regulate their body temperature, airplanes ... seismic activity. , But even though these ...
(Date:7/24/2014)... 2014 SRI International has been awarded a ... of Allergy and Infectious Diseases (NIAID), part of the ... potential therapies for HIV infection and AIDS. The contract ... AIDS and the complications and opportunistic infections associated with ... transmission of HIV. According to the ...
(Date:7/24/2014)... LANSING, Mich. , July 24, 2014  Neogen ... today that future forecasts of its potential revenue from ... conference call to investors and analysts on July 22, ... questioned by analysts regarding this research. "It ... answer questions about the potential of a new type ...
(Date:7/24/2014)... CA (PRWEB) July 24, 2014 ... http://www.draperuniversity.com , is proud to announce that for ... 17 different countries will converge on the Draper ... for an intensive, experiential program focused on entrepreneurship, ... highly selective school, currently running its sixth cohort, ...
Breaking Biology Technology:New approach to form non-equilibrium structures 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 3Neogen comments on SenesTech 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 2Summer Entrepreneurship Program Kicked Off by Draper University in Silicon Valley 3
... Inc. (OTC Bulletin Board: CARN) said it retained,Milkie/Ferguson ... it in,exploring a range of financial alternatives., ... continuation of our efforts to,thoroughly consider our business ... PhD, chief executive officer of Carrington.,"We have valuable ...
... BioMarin,Pharmaceutical Inc. (Nasdaq and SWX: BMRN) announced today ... present a,company update at the 19th Annual Merrill ... New York City on Wednesday,February 6, 2008 at ... a live audio webcast of the presentation,via the ...
... 30 Phosphagenics,Limited ("Phosphagenics") (ASX: POH, AIM: PSG, ... demonstrating that the,combination of its APA- 01 product ... lipids and inflammatory proteins,involved in the development of ... the study was to determine whether a combination ...
Cached Biology Technology:Carrington Retains Milkie/Ferguson to Explore Financial Alternatives 2BioMarin to Present at the Merrill Lynch 2008 Global Healthcare Conference 2Phosphagenics Reports Superior Pre-clinical Cholesterol Results from APA-01 and Atorvastatin Combination 2Phosphagenics Reports Superior Pre-clinical Cholesterol Results from APA-01 and Atorvastatin Combination 3Phosphagenics Reports Superior Pre-clinical Cholesterol Results from APA-01 and Atorvastatin Combination 4