Navigation Links
It's good to have a shady side: sun and shade leaves play different roles in tree canopies
Date:3/31/2011

Durham, NC 'Outer' tree canopy leaves influence the sunlight reaching inner canopy leaves by changing their shape, says a new study.

The shape and physiology of leaves within the tree canopy is not constant, and can vary depending on their position within the tree crown. This phenomenon is expected to have important consequences for how trees cope with stress and use resources.

A new study describes how the leaves in the outer canopy of olive trees can influence the light environment within the canopy by changing their shape, as more elongated leaves resulted in higher levels of solar radiation inside the crown.

Author Rafael Rubio de Casas and colleagues observed that inner canopy leaves appear to be particularly adapted to the use of diffuse solar radiation, which is more constant than direct radiation. They propose that outer canopy leaves change not only to maximize their own performance, but also to create a beneficial environment for the inner canopy leaves. They also suggest that leaves in various positions of the canopy can use different types of solar radiation for photosynthesis and operate at different time windows. Exposed leaves are expected to use direct solar radiation and be more active when the sun is close to the horizon, while shaded leaves specialize in the capture of diffuse radiation and are more active when the sun is higher.

De Casas and colleagues feel that their work shows a novel and heretofore unexplored integrated function of leaves that could have substantial ecological importance.


'/>"/>

Contact: Rafael Rubio de Casas
rafa@nescent.org
919-668-9107
National Evolutionary Synthesis Center (NESCent)
Source:Eurekalert

Page: 1

Related biology news :

1. Some city trees may discourage shady behavior
2. From bark to bedside: Study looks at canine cancer genes, human health impact
3. How plants counteract against the shade of larger neighbors
4. Nightshades mating habits strike uneasy evolutionary balance
5. Shade-coffee farms support native bees that maintain genetic diversity in tropical forests
6. Low-tech cool: Shade trees for subtropical streets
7. Sun or shade: Pecan leaves photosynthetic light response evaluated
8. UGA licenses new Bermuda grass that thrives in sun and shade
9. New study: Home energy savings are made in the shade
10. Shades of 1918? New study compares avian flu with a notorious killer from the past
11. California study shows shade trees reduce summertime electricity use
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/24/2015)... -- This report analyzes the worldwide markets for Iris Biometrics ... the US, Canada , Japan ... , Middle East , and ... provided for the period 2013 through 2020. Also, a seven-year ... analytics are derived from primary and secondary research. Company profiles ...
(Date:2/24/2015)... , Feb. 24, 2015 Research and Markets ... addition of the "Global 2D Gesture Recognition ... The analysts forecast the Global 2D ... of 32.12% over the period 2014-2019 ... non-traditional sectors is one of the major trends ...
(Date:2/19/2015)... 2015 Research and Markets ( ... "Military Electro-Optical / Infrared Systems Market by ... - Forecast to 2020" report to their ... market is expected to reach $16.35 billion by ... This report segments the military electro-optical/infrared systems ...
Breaking Biology News(10 mins):World Iris Biometrics Industry 2World Iris Biometrics Industry 3World Iris Biometrics Industry 4World Iris Biometrics Industry 5World Iris Biometrics Industry 6World Iris Biometrics Industry 7World Iris Biometrics Industry 8World Iris Biometrics Industry 9World Iris Biometrics Industry 10World Iris Biometrics Industry 11Global 2D Gesture Recognition Market 2015-2019 with Cognitec Systems, CogniVue, eyeSight Mobile Technologies & PointGrab Dominating 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 3
... Celecoxib have come under scrutiny lately due to adverse ... fly and rat models, researchers reveal another adverse effect ... this effect is independent of the COX-2 enzyme. ... on the heart rate of Drosophila, a good model ...
... His friends used to think he was eccentric, crawling ... north-central Pennsylvania, hauling dental tools and a jack hammer. ... theyve gotten over it, and are congratulating him on ... Paleontological Society, presented at the Geological Society of Americas ...
... and scientific books and journals, was acquired by ... immediately available on www.springerlink.com along with ... than 22,000 eBooks. Beginning with the subscription year ... Press journals through Springer. All issues previously available ...
Cached Biology News:Academy volunteer wins national paleontology award 2Humana Press journals now available on SpringerLink 2
(Date:3/4/2015)... , March 4, 2015 ... de Paris en décembre ...   SARAH   », qui compare   l ... avec le   sorafénib dans le carcinome hépatocellulaire ... d,un cancer du foie avancé   ; les ...
(Date:3/3/2015)... 3, 2015  Halozyme Therapeutics, Inc. (NASDAQ: HALO ... Conference in Miami, FL on March ... A. Ramsay , Chief Financial Officer, will provide a corporate ... "Investors" section of Halozyme,s corporate website at www.halozyme.com , ... following the event. To access the live webcast, please log ...
(Date:3/3/2015)... ON , March 3, 2015 /PRNewswire/ - BIOREM Inc. (TSXV: ... $3.7 million.  The orders are for odour control projects in ... and Asia . "Bidding activity ... , President and CEO. "After a high volume year for bidding ... into the New Year.  The recent orders reflect the organization,s renewed ...
(Date:3/3/2015)... TORONTO , March 3, 2015 /CNW/- SQI Diagnostics ... and commercializes proprietary technologies and products for advanced ... Ryer CPA, CA, CFE  to its Management team. ... the Company in its transition from a development ... financing initiatives to advance the Company,s capital market ...
Breaking Biology Technology:Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 2Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 3Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 4Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 5Traitement du cancer primitif du foie : Recrutement terminé pour l'étude SARAH et résultats attendus fin 2016 6Halozyme Therapeutics To Present At The Barclays 2015 Global Healthcare Conference 2SQI Diagnostics Appoints Chief Financial Officer 2SQI Diagnostics Appoints Chief Financial Officer 3
... Vical Incorporated,(Nasdaq: VICL ) presentation at the ... at 1 p.m. Eastern Daylight Time, will be ... page at http://www.vical.com ., About Vical, ... on its,patented DNA delivery technologies for the prevention ...
... - Oncentra(R) RT Viewer* Officially to Launch ... ASTRO 2008, Boston, USA, September,21-24, Nucletron, a ... release of Oncentra RT Viewer. This unique innovation,in ... review,radiotherapy plans that are generated with a wide ...
... significant partial onset seizure reduction, proven ... - Keppra XR(TM) is ... press release, regulated information:,UCB announced today that the U.S. Food ... for use as,an add-on to other antiepileptic treatments for people ...
Cached Biology Technology:Vical to Present at UBS Global Life Sciences Conference 2Nucletron Announces Market Release of First Commercially Available Software to Review and Share Dicom-Based Treatment Plans for Radiotherapy 2Video: Keppra XR(TM) Approved in the U.S. 2Video: Keppra XR(TM) Approved in the U.S. 3Video: Keppra XR(TM) Approved in the U.S. 4