Read e-book online Components of productivity of Mediterranean-climate regions PDF

By N. S. Margaris, H. A. Mooney (auth.), N. S. Margaris, H. A. Mooney (eds.)

ISBN-10: 9400986831

ISBN-13: 9789400986831

ISBN-10: 9400986858

ISBN-13: 9789400986855

Our wisdom of the sensible features of the crops of mediterranean-cl imate areas has elevated enormously some time past decade. in recent years the opportunity of large-scale util ization of biomass for power from those areas has been proposed. with a purpose to investigate the feasibil ity of those proposals we needs to give some thought to the efficient constitution of those plant groups and the way they range via time and house. This symposium used to be an try and learn our lately obtained easy wisdom of the environmental I imitations at the productiveness of Mediterranean plant groups relating to the results of the prospective util ization of those groups for power and chemical substances. particularly during this publication we learn the mechanisms through which vegetation of mediterranean-cl imate areas preserve their effective capability lower than the succeed ing stipulations of summer time draught and iciness chilly. We contemplate the features of leaves, their historical past, morphology and plasticity. Evergreen sclerophyll leaves are universal to the dominant crops of all mediterranean-cl imate areas and hence they've got value when it comes to bettering carbon achieve and water-use potency in addition to making sure survival less than the succeed ing cl imatic conditions.

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Extra resources for Components of productivity of Mediterranean-climate regions Basic and applied aspects: Proceedings of the International Symposium on Photosynthesis, Primary Production and Biomass Utilization in Mediterranean-Type Ecosystems, held in Kassandra, Greece, Se

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All rights reserved. Copyright © 1981 Dr W. Junk Publishers, The Hague/Boston/London LEAF AGE EFFECTS ON THE CARBON GAIN OF INDIVIDUAL LEAVES IN RELATION TO MICRO SITE C. Field (Department of Biological Sciences, Stanford University, Stanford, California 94305 USA) 1. INTRODUCTION leaves are frequently shaded. The relationship between leaf age and photosyn- If natural selection has molded leaf aging in response to the probabil- thesis has been studied in many plants. ity of increas'ing shade with leaf age, the aging Aspects of the problem that have received parti- process may represent shade adaptation.

March 7-8 April 4-5 . 73 but could have imposed only slight reductions in photosynthesis (unpublished data). To calculate total carbon gain for the observed aging pattern, daily net carbon gain was summed over the leaf-age series. The value chosen for each leaf was the one expected in the microsite appropriate for the leaf's age. a horizontal surface. Values are averages from continuous recordings in 1979 and 1980. 5 *Data from 1980 only. g, than an alternative without physiological aging must occur with high frequency.

Sweet GB and Wareing PF (1966) Role of plant growth in regulating photosynthesis, Nature 210, 77-79. Syvertsen JP and Cunningham GL (1977) Rate of leaf production and senescence and effect of leaf age on net gas exchange in creosotebush, Photosynthetica II, 161-166. Thomas H and Stoddart JL (1980) Leaf senescence, Ann. Rev. Plant Phys. 31, 83-111. , Gehrke CW, Neuner TE, Cathey RD and Rexroad RR (1974) Total protein nitrogen: an evaluation and comparison of four different methods. Columbia, Missouri, Experiment Station Chemical Laboratories, University of Missouri-Columbia.

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Components of productivity of Mediterranean-climate regions Basic and applied aspects: Proceedings of the International Symposium on Photosynthesis, Primary Production and Biomass Utilization in Mediterranean-Type Ecosystems, held in Kassandra, Greece, Se by N. S. Margaris, H. A. Mooney (auth.), N. S. Margaris, H. A. Mooney (eds.)


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