scholarly journals Increased Air Temperature during Simulated Autumn Conditions Does Not Increase Photosynthetic Carbon Gain But Affects the Dissipation of Excess Energy in Seedlings of the Evergreen Conifer Jack Pine

2007 ◽  
Vol 143 (3) ◽  
pp. 1242-1251 ◽  
Author(s):  
Florian Busch ◽  
Norman P.A. Hüner ◽  
Ingo Ensminger
Keyword(s):  
Air Temperature ◽  
Jack Pine ◽  
Excess Energy ◽  
Carbon Gain ◽  
Photosynthetic Carbon ◽  
Evergreen Conifer

Nitrogen-addition effects on leaf traits and photosynthetic carbon gain of boreal forest understory shrubs

Oecologia ◽  
2014 ◽  
Vol 175 (2) ◽  
pp. 457-470 ◽  
Author(s):  
Sari Palmroth ◽  
Lisbet Holm Bach ◽  
Annika Nordin ◽  
Kristin Palmqvist
Keyword(s):  
Boreal Forest ◽  
Leaf Traits ◽  
Nitrogen Addition ◽  
Forest Understory ◽  
Carbon Gain ◽  
Photosynthetic Carbon ◽  
Understory Shrubs

Increased high‐latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition

2019 ◽  
Vol 26 (2) ◽  
pp. 682-696 ◽  
Author(s):  
Zhihua Liu ◽  
John S. Kimball ◽  
Nicholas C. Parazoo ◽  
Ashley P. Ballantyne ◽  
Wen J. Wang ◽  
...  
Keyword(s):  
High Latitude ◽  
Carbon Gain ◽  
Carbon Loss ◽  
Warm Winter ◽  
Spring Transition ◽  
Photosynthetic Carbon

Mixed-species effect on tree aboveground carbon pools in the east-central boreal forests

2010 ◽  
Vol 40 (1) ◽  
pp. 37-47 ◽  
Author(s):  
Xavier Cavard ◽  
Yves Bergeron ◽  
Han Y.H. Chen ◽  
David Paré
Keyword(s):  
Boreal Forest ◽  
Populus Tremuloides ◽  
Pinus Banksiana ◽  
Black Spruce ◽  
Mixed Forest ◽  
Jack Pine ◽  
Carbon Gain ◽  
Trembling Aspen ◽  
Niche Complementarity ◽  
Aboveground Carbon

This study investigates the potential of mixed forest stands as better aboveground carbon sinks than pure stands. According to the facilitation and niche complementarity hypotheses, we predict higher carbon sequestration in mature boreal mixedwoods. Aboveground carbon contents of black spruce ( Picea mariana (Mill.) Britton, Sterns, Poggenb.) and trembling aspen ( Populus tremuloides Michx.) mixtures were investigated in the eastern boreal forest, whereas jack pine ( Pinus banksiana Lamb.) and trembling aspen were used in the central boreal forest. No carbon gain was found in species mixtures; nearly pure trembling aspen stands contained the greatest amount of aboveground carbon, black spruce stands had the least, and mixtures were intermediate with amounts that could generally be predicted by linear interpolation with stem proportions. These results suggest that for aspen, the potentially detrimental effect of spruce on soils observed in other studies may be offset by greater light availability in mixtures. On the other hand, for black spruce, the potentially beneficial effects of aspen on soils could be offset by greater competition by aspen for nutrients and light. The mixture of jack pine and trembling aspen did not benefit any of these species while inducing a loss in trembling aspen carbon at the stand level.

Response of photosynthetic carbon gain to ecosystem retrogression of vascular plants and mosses in the boreal forest

Oecologia ◽  
2012 ◽  
Vol 169 (3) ◽  
pp. 661-672 ◽  
Author(s):  
Sheel Bansal ◽  
Marie-Charlotte Nilsson ◽  
David A. Wardle
Keyword(s):  
Boreal Forest ◽  
Vascular Plants ◽  
Carbon Gain ◽  
Photosynthetic Carbon

scholarly journals Over-expressing the C3 photosynthesis cycle enzyme Sedoheptulose-1-7 Bisphosphatase improves photosynthetic carbon gain and yield under fully open air CO2 fumigation (FACE)

2011 ◽  
Vol 11 (1) ◽  
pp. 123 ◽  
Author(s):  
David M Rosenthal ◽  
Anna M Locke ◽  
Mahdi Khozaei ◽  
Christine A Raines ◽  
Stephen P Long ◽  
...  
Keyword(s):  
Carbon Gain ◽  
Cycle Enzyme ◽  
Photosynthetic Carbon ◽  
C3 Photosynthesis

scholarly journals Elevated ozone reduces photosynthetic carbon gain by accelerating leaf senescence of inbred and hybrid maize in a genotype-specific manner

2017 ◽  
Vol 40 (12) ◽  
pp. 3088-3100 ◽  
Author(s):  
Craig R. Yendrek ◽  
Gorka Erice ◽  
Christopher M. Montes ◽  
Tiago Tomaz ◽  
Crystal A. Sorgini ◽  
...  
Keyword(s):  
Leaf Senescence ◽  
Carbon Gain ◽  
Elevated Ozone ◽  
Photosynthetic Carbon ◽  
Specific Manner ◽  
Hybrid Maize

scholarly journals Effects of pH, Photoperiod, and Nutrient on Germination and Growth of Calymperes erosum C. Muell. Gemmaling

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Anthony Zinno Ogbimi ◽  
Yetunde Biodun Owoeye ◽  
Victor Oluwaseyi Ibiyemi ◽  
Akpos Valentino Bofede
Keyword(s):  
Nutrient Concentration ◽  
Carbon Gain ◽  
Continuous Darkness ◽  
Significant Difference ◽  
Photosynthetic Carbon ◽  
Effects Of Ph ◽  
Germination And Growth ◽  
Substrate Ph ◽  
Nutrient Conditions

Effects of pH, photoperiod, and substrate nutrient concentration on the rate of germination of the gemmae and primary protonema growth of Calymperes erosum C. Muell. were studied. There was a statistically significant difference in germination of C. erosum gemmae and protonema growth among the different substrate pH levels, photoperiod treatments, and substrate nutrient conditions, respectively (P<0.01). Gemmae germination and protonemal growth peaked at pH 4 and 5. Protonemal growth was retarded at pH 2, 3, 6, and 7. No germination was observed in continuous darkness. Germination and protonema growth increased significantly (P<0.01) within the first 3 and 6 hours of daylight but not again until after 9 and 12 hours of exposure, respectively. No statistical (P>0.05) increase in germination and protonemal growth was observed when the nutrient concentration was increased from 25% to 200%. Results indicate the moss is adapted to low nutrients and that it may germinate well at substrate pH as low as 2 howbeit the probability of establishment will remain limited until pH levels improve to 4 or 5. Furthermore, the moss is able to achieve net photosynthetic carbon gain during morning hours. Recovery from photoinhibition is likely by evening.

scholarly journals Elevated CO2 Enhances Dynamic Photosynthesis in Rice and Wheat

2021 ◽  
Vol 12 ◽  
Author(s):  
Huixing Kang ◽  
Ting Zhu ◽  
Yan Zhang ◽  
Xinran Ke ◽  
Wenjuan Sun ◽  
...  
Keyword(s):  
Light Intensity ◽  
Carbon Gain ◽  
Substrate Effect ◽  
Sudden Increase ◽  
Photosynthetic Induction ◽  
Crop Species ◽  
Relative Contribution ◽  
Dynamic Photosynthesis ◽  
Photosynthetic Carbon ◽  
Time Required

Crops developed under elevated carbon dioxide (eCO2) exhibit enhanced leaf photosynthesis under steady states. However, little is known about the effect of eCO2 on dynamic photosynthesis and the relative contribution of the short-term (substrate) and long-term (acclimation) effects of eCO2. We grew an Oryza sativa japonica cultivar and a Triticum aestivum cultivar under 400 μmol CO2 mol−1 air (ambient, A) and 600 μmol CO2 mol−1 air (elevated, E). Regardless of growth [CO2], the photosynthetic responses to the sudden increase and decrease in light intensity were characterized under 400 (a) or 600 μmol CO2 mol−1 air (e). The Aa1, Ae2, Ea3, and Ee4 treatments were employed to quantify the acclimation effect (Ae vs. Ee and Aa vs. Ea) and substrate effect (Aa vs. Ae and Ea vs. Ee). In comparison with the Aa treatment, both the steady-state photosynthetic rate (PN) and induction state (IS) were higher under the Ae and Ee treatments but lower under the Ea treatment in both species. However, IS reached at the 60 sec after the increase in light intensity, the time required for photosynthetic induction, and induction efficiency under Ae and Ee treatment did not differ significantly from those under Aa treatment. The substrate effect increased the accumulative carbon gain (ACG) during photosynthetic induction by 45.5% in rice and by 39.3% in wheat, whereas the acclimation effect decreased the ACG by 18.3% in rice but increased it by 7.5% in wheat. Thus, eCO2, either during growth or at measurement, enhances the dynamic photosynthetic carbon gain in both crop species. This indicates that photosynthetic carbon loss due to an induction limitation may be reduced in the future, under a high-CO2 world.

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