More To Drought Than Meets The Eye

Looking at Different Ways To Diagnose Drought

Albuquerque, N.M. -- Just as you can't judge a book by its cover, you probably can't judge a tree's drought tolerance by its leaf response, according to Penn State researchers.

"It appears that leaf physiology is not the only way to look at the drought tolerance of trees," says Dr. Marc Abrams, professor of forest ecology in the College of Agricultural Sciences.

Conventional measures of drought tolerance in trees include adaptations deemed necessary to conserve or withstand an absence of water, including deep roots and thick leaves that can continue to photosynthesize -- convert sunlight into usable energy. Drought intolerant species tend to have shallow roots and shut down during drought. It is not unusual for drought-intolerant species to drop their leaves in time of drought and stop photosynthesizing.

The researchers decided to look at another measure of a tree's drought response, the amount of energy put into trunk growth.

"It appears that the drought tolerance ranking of trees in Central Pennsylvania based on ecological distribution or leaf physiology during drought is not an indication of a tree's growth response during drought," the researchers told attendees at the Ecological Society of American Conference, today (Aug. 14) in Albuquerque. "When we looked at the tree rings for drought years, some trees that are considered intolerant to drought, had average or above average growth."

The researchers, who include Abrams; Charles M. Ruffner, graduate student in forest resources; and T. A. Morgan, undergraduate in forestry resources, looked at trees growing in four different areas in the ridge and valley province of Pennsylvania -- ridge, valley, barren and riparian.

The ridge tops were the driest areas and the riparian areas near rivers and streams were the wettest. The valley makes up a moist intermediate soil climate and the barrens are

Contact: A'ndrea Elyse Messer
Penn State

Page: 1 2 3

Related biology news :

1. Droughts like 1930s Dust Bowl may have been unexceptional in prehistoric times, new study suggests
2. Drought
3. Droughts worse than the 1930s likely in the 21st century
4. Drought brings environmental, ecological changes
5. Drought worsens, spreads
6. Jet Stream Studied In West African Drought
7. New Evidence For Corns Ancestry Could Lead To Insect And Drought Resistant Crops
8. Transgenic Rice Plants Resist Insects, Drought And Salt Damage
9. The Presidents Coral Reef Task Force Meets On March 5-6
10. NSB Meets In L.A. On Expanded Environmental Research, Education, Assessment
11. Where The Rubber Meets The Air

Post Your Comments:

(Date:3/27/2019)... (PRWEB) , ... March 26, 2019 , ... Evan ... Greenberg Traurig, LLP , was a panelist at the National Academy of Sciences ... NAS’ Keck Center. Holden, a member of the firm’s award-winning Pharmaceutical, Medical Device ...
(Date:3/26/2019)... ... March 26, 2019 , ... Ms. Wein will be ... and services. In her position, Ms. Wein will also oversee Lifecycle’s social media ... and customer beneficial features as well as any other marketing efforts in print ...
(Date:3/25/2019)... ... March 25, 2019 , ... ... contract research organisation focused on advancing drug discovery, have announced a collaboration to ... Tissue clearing methods, which are essential to get a better view of complex ...
Breaking Biology News(10 mins):
(Date:4/16/2019)... ... April 16, 2019 , ... On April 24th, ... the U.S. Army Center for Environmental Health Research (USACEHR), with an award for ... Blue Sources, a veteran-owned company located at the Frederick Innovative Technology Center, Inc. ...
(Date:4/15/2019)... ... April 15, 2019 , ... Sirrus, Inc., a ... million bench plant expansion to increase production of methylene malonate monomers and oligomers. ... construction of Sirrus’ full-scale production facility, which is scheduled to break ground in ...
(Date:4/10/2019)... ... April 10, 2019 , ... ... manufacturing technology leaders, have locked into multiple agreements to help companies advance ... the regenerative medicine industry, ranging from synthetic biology companies that are gene ...
(Date:4/9/2019)... Calif. (PRWEB) , ... April 09, 2019 , ... ... services firm focused on increasing the capacity of life sciences organizations to accelerate ... Cloud Assurance platform in the past 12 months. , USDM’s ...
Breaking Biology Technology:
Cached News: