+- +-


Welcome, Guest.
Please login or register.
Forgot your password?

+-Stats ezBlock

Total Members: 42
Latest: eranda
New This Month: 0
New This Week: 0
New Today: 0
Total Posts: 9795
Total Topics: 240
Most Online Today: 2
Most Online Ever: 52
(November 29, 2017, 04:04:44 am)
Users Online
Members: 1
Guests: 0
Total: 1

Author Topic: The Fabulous Plant Kingdom  (Read 1497 times)

0 Members and 0 Guests are viewing this topic.


  • Administrator
  • Hero Member
  • *****
  • Posts: 9600
  • Location: Colchester, Vermont
    • View Profile
    • Agelbert Truth AND Consequences
Re: The Fabulous Plant Kingdom
« Reply #30 on: May 19, 2018, 01:14:53 pm »
Do Leaves Get Hotter in Sunlight?

Botanists used to assume that the temperature of a photosynthesizing tree leaf would be the same as that of the surrounding air. But a 2008 study published in the journal Nature showed that tree leaves have a built-in climate control system that keeps them at a constant 69.8 degrees Fahrenheit (21.4 degrees Celsius) while they are in the process of converting sunlight, water, and carbon dioxide into food. This temperature stays about the same, whether they are located in frosty Canada or the toasty Caribbean.

A leaf's inner thermostat:

Biologists at the University of Pennsylvania studied 39 tree species that grow within a range of 50 degrees of latitude across North America, between Puerto Rico and Canada.

“To think that a black spruce in Canada and a Caribbean pine in Puerto Rico have the same average leaf temperature is quite astonishing,  :o” said researcher Brent Helliker.

Plants use several mechanisms to adjust their temperature, from changing the angle of their leaves relative to the sun, clustering leaf growth, or altering evaporation rates.

Leges         Sine    Moribus     Vanae   
if it has not works, is dead, being alone.


Related Topics

  Subject / Started by Replies Last post
7 Replies
Last post December 12, 2013, 07:46:06 pm
by AGelbert
21 Replies
Last post October 27, 2017, 02:53:55 pm
by AGelbert
0 Replies
Last post May 24, 2014, 07:11:09 pm
by AGelbert

+-Recent Topics

Global Warming is WITH US by AGelbert
Today at 06:14:41 pm

Money by AGelbert
Today at 05:54:15 pm

Corruption in Government by AGelbert
Today at 01:18:01 pm

War Provocations and Peace Actions by AGelbert
June 18, 2018, 09:12:14 pm

Human Life is Fragile but EVERY Life is Valuable by AGelbert
June 18, 2018, 08:30:58 pm

Fossil Fuels: Degraded Democracy and Profit Over Planet Pollution by AGelbert
June 18, 2018, 08:14:58 pm

Pollution by AGelbert
June 18, 2018, 02:08:51 pm

Electric Vehicles by AGelbert
June 18, 2018, 02:00:45 pm

Darwin by AGelbert
June 18, 2018, 12:39:02 pm

Mechanisms of Prejudice: Hidden and Not Hidden by AGelbert
June 17, 2018, 09:05:25 pm

Free Web Hit Counter By CSS HTML Tutorial