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Download PDF by Peter S. Curtis, Elizabeth G. O’Neill, James A. Teeri,: Belowground Responses to Rising Atmospheric CO2:

By Peter S. Curtis, Elizabeth G. O’Neill, James A. Teeri, Donald R. Zak, Kurt S. Pregitzer (auth.), Peter S. Curtis, Elizabeth G. O’Neill, James A. Teeri, D. R. Zak, K. S. Pregitzer (eds.)

ISBN-10: 9048144159

ISBN-13: 9789048144150

ISBN-10: 9401708517

ISBN-13: 9789401708517

As atmospheric CO2 raises there'll possibly be adjustments in soil carbon fluxes. it's most likely that such changes could be followed via alterations within the partitioning of carbon among natural constructions and to soil methods. those alterations have the possibility of extra changing the constitution and serve as of terrestrial ecosystems. whereas there was expanding attractiveness of the significance of soil-mediated responses to international weather swap, the character and value of those responses aren't good understood. so one can extend our overview of the importance of belowground responses to emerging atmospheric CO2, a workshop has been geared up that ended in the peer-reviewed contributions which are contained during this quantity.

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Extra resources for Belowground Responses to Rising Atmospheric CO2: Implications for Plants, Soil Biota, and Ecosystem Processes: Proceedings of a workshop held at the University of Michigan Biological Station, Pellston, Michigan, USA, May 29–June 2, 1993

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1994), little data exist on how extra C02 alters horizontal and vertical distribution patterns within actual soil profiles. In our study, the effect of increased CO2 on root dry weight density varied between samplings and years. 02; Fig. 19; data not shown). 10; Fig. 3B, only reproductive data shown). In general, the root dry weight distribution patterns were similar to those observed for root length density. Representative results for root dry weight density are shown in Figures 3B and 4. 5 m) by 40, 33, and 111 %, respectively (Fig.

M. in the greenhouse in which plants were growing, by placing 6 needles (2 fascicles) in the chamber of a LICOR 6200 portable photosynthesis system. All measurements were made at the growth CO 2 treatment of each plant and were expressed on a total leaf area basis. Data analyses All measurements were analyzed as randomized block designs, the greenhouse being treated as a block, with ANOVAs. All data were checked for normality. Root to shoot ratios were analyzed after square-root transformation.

3 V s::. 1 55 30 oo a: c S 10 55 86 Days 124 after 150 172 germination Fig. 1. Biomass characteristics of loblolly pine seedlings grown at either high (H) or low (L) nitrogen level and at either 375 or 710 ILL L - I C02 with time after germination; total dry weight per plant (A), root to shoot dry weight ratio (B), and root dry weight per plant (C). Error bars indicate one standard error. 25 Table 1. Significant levels of ANOVAs on total dry weight, Root/Shoot dry weight ratio, and root morphological characteristics at harvests 2, 3, 4 and 5.

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Belowground Responses to Rising Atmospheric CO2: Implications for Plants, Soil Biota, and Ecosystem Processes: Proceedings of a workshop held at the University of Michigan Biological Station, Pellston, Michigan, USA, May 29–June 2, 1993 by Peter S. Curtis, Elizabeth G. O’Neill, James A. Teeri, Donald R. Zak, Kurt S. Pregitzer (auth.), Peter S. Curtis, Elizabeth G. O’Neill, James A. Teeri, D. R. Zak, K. S. Pregitzer (eds.)


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