Download The Findit App

Share Your Posts On These Major Social Networks

Instatag Your Posts to Instagram Facebook + Twitter

News

Tropical Trees

Citation: Center for the Study of Carbon Dioxide and Global Change. "Tropical Trees.”

Salt Lake City 9/30/2014 2:27:00 PM

Going back in time to the final few years of the 20th century, Schaffer et al. (1997)1 grew two mango ecotypes - one evolving from a warm, humid tropical climate, and the other from a cool, dry subtropical region - for 12 months in glasshouses maintained at either 350 or 700 ppm CO2 in order to determine the effects of atmospheric CO2 enrichment on the trees' growth and leaf mineral nutrient concentrations. In doing so, they found that in addition to the greater net carbon gains of the CO2-enriched trees, the elevated CO2 tended to decrease foliar concentrations of mineral nutrients (N, P, K, Ca, Mg, S, Cl, Fe, Zn, Mn, Cu and B) in both mango cultivars, most likely due to a dilution effect, since atmospheric CO2 enrichment increased leaf dry mass. But with respect to this latter finding, the scientists who conducted the study wrote that "given the slow rate at which global atmospheric CO2 concentration is increasing, it is possible that plants will adapt to this phenomenon over time with respect to mineral nutrition," as actually was found to be the case in a prior study of sour orange trees after 85 months of exposure to elevated CO2 (Penuelas et al., 1997).
One year later, Lin et al. (1998)2 measured the ecosystem carbon exchange rate of a 1700-m3 synthetic rainforest mesocosm that was alternately maintained at atmospheric CO2 concentrations of either 430 or 740 ppm. This enormous study site, managed by Columbia University, was located within the 1.25-ha naturally-lit Biosphere 2 research "dome," which contained several large synthetic ecosystems enclosed by stainless steel sheets and glass. After 
the dome's air was stabilized at a treatment CO2 level for about a week, the rainforest mesocosm was isolated from the rest of the dome for one to three days so its carbon exchange rate could be measured. This work revealed that the 72% increase in atmospheric CO2 concentration increased the daytime net ecosystem carbon exchange rate of the synthetic rainforest by 79%, without affecting the amount of carbon respired from the soil, which observation indicated that the CO2-enhanced ecosystem carbon uptake was due primarily to increased canopy net photosynthesis, as the elevated CO2 had no significant effect on soil respiration.

More News

https://s3.amazonaws.com/findit-pictures/19221/1779165_19221_160115073943

The Influence of CO2 on Plant Antioxidants

Center for the Study of Carbon Dioxide and Global Change. "The Influence of CO2 on Plant Antioxidants.” Last modified January 8, 2015. http://www.co2science.org/subject/a/summaries/antioxidants.php.

Released On: 1/16/2015
Views: 6216

View
https://s3.amazonaws.com/findit-pictures/19221/1771807_19221_050115011904

Health Effects of Hot Vs Cold Temperatures in Asia

Health Effects of Hot Vs Cold Temperatures in Asia.

Released On: 1/5/2015
Views: 6452

View
https://s3.amazonaws.com/findit-pictures/19221/1767800_19221_291214123540

Coral Reef Responses to Temperature Stress: Thermal Adaptation

Coral Reef Responses to Temperature Stress: Thermal Adaptation. As living entities, corals are not only acted upon by the various elements of their environment,they also react or respond to them.

Released On: 12/29/2014
Views: 6096

View
https://s3.amazonaws.com/findit-pictures/19221/1767752_19221_291214111658.jpg

Forest Growth Response to CO2

Forest Growth Response to CO2. By examining various properties of tree rings, researchers can deduce how historical increases in the air's CO2 concentration have already affected tree productivity and water use efficiency.

Released On: 12/29/2014
Views: 4700

View
https://s3.amazonaws.com/findit-pictures/19221/1767751_19221_291214110504.jpg

Onward Marches the Great Pause

Onward Marches the Great Pause. Since October 1996 there has been no global warming at all (Fig. 1).

Released On: 12/29/2014
Views: 3762

View
https://s3.amazonaws.com/findit-pictures/19221/1752698_19221_081214123011.jpg

RESPONSE OF VARIOUS MARINE ANIMALS TO OCEAN ACIDIFICATION AND WARMING

RESPONSE OF VARIOUS MARINE ANIMALS TO OCEAN ACIDIFICATION AND WARMING.

Released On: 12/8/2014
Views: 3383

View
https://s3.amazonaws.com/findit-pictures/19221/1752697_19221_081214121522.jpg

FACE EXPERIMENTS AND GRASSLAND SPECIES

FACE EXPERIMENTS AND GRASSLAND SPECIES.

Released On: 12/8/2014
Views: 3973

View
https://s3.amazonaws.com/findit-pictures/19221/1752696_19221_081214114115.jpg

EFFECTS OF OCEAN ACIDIFICATION ON FISH

EFFECTS OF OCEAN ACIDIFICATION ON FISH.

Released On: 12/8/2014
Views: 4017

View
https://s3.amazonaws.com/findit-pictures/19221/1741944_19221_211114021804.jpg

Response of Fish to Ocean Warming

Response of Fish to Ocean Warming. According to the IPCC, CO2-induced global warming will be net harmful to the world's marine species.

Released On: 11/21/2014
Views: 3940

View
https://s3.amazonaws.com/findit-pictures/19221/1741943_19221_211114021100.jpg

Long-Term Open-Top-Chamber Study of Sour Orange Trees

Long-Term Open-Top-Chamber Study of Sour Orange Trees. Eight 30-cm-tall sour orange tree (Citrus aurantium L.) seedlings were planted directly into the ground at the Agricultural Research Service's U.S. Water Conservation Laboratory in Phoenix, A ...

Released On: 11/21/2014
Views: 3970

View
https://s3.amazonaws.com/findit-pictures/19221/1741902_19221_211114020343

The Global Medieval Warm Period

The Global Medieval Warm Period. Between the 10th and 14th centuries AD, earth's average global temperature may have been warmer than it is today.

Released On: 11/21/2014
Views: 3735

View
https://s3.amazonaws.com/findit-pictures/19221/1701566_19221_300914015604

Growth Rates of Old versus Young Forest Trees

Growth Rates of Old versus Young Forest Trees. The planting and preservation of forests has long been acknowledged to be an effective and environmentally-friendly means for slowing climate-model-predicted CO2-induced global warming.

Released On: 9/30/2014
Views: 4028

View
https://s3.amazonaws.com/findit-pictures/19221/1701354_19221_300914102740

Tropical Trees

Citation: Center for the Study of Carbon Dioxide and Global Change. "Tropical Trees.”

Released On: 9/30/2014
Views: 4037

View
https://s3.amazonaws.com/findit-pictures/19221/1701356_19221_300914105354

Water Use Efficiency of Agricultural Species

Water Use Efficiency of Agricultural Species.

Released On: 9/30/2014
Views: 3988

View
https://s3.amazonaws.com/findit-pictures/19221/1689629_19221_120914021236

GLOBAL TEMPERATURES AND BIOSPHERIC PRODUCTIVITY

Global temperatures and biospheric productivity. Among the many climate-alarmist fears of CO2-induced global warming is the concern that the productivity of the biosphere will decline if global temperatures rise to the extent predicted by compute ...

Released On: 9/13/2014
Views: 3952

View
https://s3.amazonaws.com/findit-pictures/19221/1689623_19221_120914020343

REWRITING SUNSPOT HISTORY

Rewriting sunspot history. In 2006, when I first made the mistake of writing publicly of my doubts about the Party Line on manmade global warming.

Released On: 9/13/2014
Views: 4001

View
https://s3.amazonaws.com/findit-pictures/19221/1689620_19221_120914015840

ANALYSIS OF THE SECOND ORDER DRAFT OF THE WORKING GROUP I CONTRIBUTION TO IPCC 5AR

ANALYSIS OF THE SECOND ORDER DRAFT OF THE WORKING GROUP I CONTRIBUTION TO IPCC 5AR. The preparation of IPCC Assessment Reports involves several stages.

Released On: 9/13/2014
Views: 3840

View
https://s3.amazonaws.com/findit-pictures/19221/1689615_19221_120914015244

THE ECONOMICS OF BIOFUELS

The economics of biofuels. Aside from rejecting biofuel expansion and use for environmental reasons.

Released On: 9/13/2014
Views: 3698

View
Load More wait