Belowground Responses to Rising Atmospheric CO2: - download pdf or read online

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 potentially be changes in soil carbon fluxes. it's most probably that such changes should be followed by means of adjustments within the partitioning of carbon among natural constructions and to soil procedures. those alterations have the possibility of extra changing the constitution and serve as of terrestrial ecosystems. whereas there was expanding reputation of the significance of soil-mediated responses to worldwide weather swap, the character and significance of those responses will not be good understood. to be able to extend our review of the importance of belowground responses to emerging atmospheric CO2, a workshop has been geared up that led to 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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There was no significant effect of N, but there was a significant interaction between CO 2 and N. Plant N concentration (mg N per g of plant) was not affected by either CO2 or N (Fig . 5B). Leaf and stem nitrogen concentrations declined by about 20% at low N (significant interaction in both cases), but were not modified by elevated CO2 at high N. Root nitrogen concentration was not affected by elevated CO2 at either N treatment (data not shown). Nitrogen uptake rate per unit root dry weight calculated for the duration of the experiment increased at elevated CO 2 by about 20% in the high N but decreased by the same percentage at low N (Fig.

6B). 15; Fig 6C). 14, respectively). 15). 10); the ambient CO 2 treatment had a higher proportion of its root dry weight allocated to the in-row position (0 m) compared to FACE (Fig. 7). No differences were seen at the remaining two positions. The changes in root proportion reported here may be related to different rates of extension of first-order lateral roots and further root branching. The higher proportion of root length and weight observed at the in-row (0 m) position under ambient CO 2 may be due to first-order lateral roots having slower elongation rates (relative to high CO 2 plants) which may have resulted in more higher-order branching occurring close to the taproot or center row position.

131, 349-359. Lowther J R 1980 Use of a single sulfuric acid-hydrogen peroxide digest for the analysis of Pinus radiata needles. Comm. Soil Sci. Plant Anal. 11, 175-188. Marx D H 1977 Tree host range and world distribution of the ectomycorrhizal fungus Pisolithus tinctorius. Can. J. Microbio!. 23, 217-223. Norby R J, Pastor J and Melillo J M 1986 Carbon-nitrogen interactions in C02 enriched white oak: physiological and long-term perspectives. Tree Physiol. 2, 233-241. Norby R J, O'Neill E G, Hood W G and Luxmoore R J 1987 Carbon allocation, root exudation and mycorrhizal colonization of Pinus echinata seedlings grown under C02 enrichment.

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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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