Summary
This paper represents an empirical study on the effect of different leaf orientations on the daily carbon gain and transpirational water loss of desert winter annuals. Laboratory physiological data on Malvastrum rotundifolium (Gray) and Lupinus arizonicus (Wats) were combined with energy budget concepts and field measurements of water relations and leaf movements to predict carbon gain patterns for horizontally oriented, diaheliotropic and paraheliotropic leaf movement types. The results showed contrasting patterns of carbon gain and water loss. L. arizonicus, which is capable of both dia- and paraheliotropic leaf movements, had the lowest rates of daily carbon gain and water loss. But these low rates resulted in the highest water use efficiencies under early season conditions and high water availability. M. rotundifolium, a diaheliotropic species, was predicted as having the highest rates of carbon gain and water loss on a daily basis over a wide range of environmental conditions and water availability. Despite possessing the highest rates for transpiration, its water use efficiency was higher in relation to other leaf movement types, under a variety of conditions. This result was extremely sensitive to soil water availability. The results were discussed in relation to the ecological ramifications of leaf movements in arid land annuals.
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References
Begg JE (1980) Morphological adaptations of leaves to water stress. In: Adaptation of Plants to Water and High Temperature Stress. Turner NC, Kramer PJ (eds) John Wiley & Sons, New York, pp 33–42
Björkman O, Downton WJS, Mooney HA (1980) Response and adaptation to water stress in Nerium oleander. Carnegie Inst Wash Yb 79:150–157
Campbell GS (1977) An Introduction to Environmental Biophysics. Springer, New York
Davies WJ, Wilson JA, Sharp RE, Osonubi O (1981) Control of stomatal behaviour in water-stressed plants. In: Stomatal Physiology. Jarvis PG, Mansfield TA (eds) Cambridge University Press New York, pp 163–185
DePuit EJ, Caldwell MM (1975) Gas exchange of three cool semidesert species in relation to temperature and water stress. J Ecol 63:835–858
Ehleringer J (1980) Leaf morphology and reflectance in relation to water and temperature stress. In: Adaptation of Plants to Water and High Temperature Stress. Turner NC, Kramer PJ (eds) John Wiley & Sons, New York, pp 295–308
Ehleringer J, Forseth I (1980) Solar tracking by plants. Science 210:1094–1098
Ehleringer J, Mooney HA, Berry JA (1979) Photosynthesis and microclimate of Camissonia claviformis, a desert winter annual. Ecology 60:280–286
Forseth I, Ehleringer JR (1980) Solar tracking response to drought in a desert annual. Oecologia (Berlin) 44:159–163
Forseth IN, Ehleringer JR (1982a) Ecophysiology of two solar tracking desert winter annuals. I. Photosynthetic acclimation to growth temperature. Aust J Plant Physiol 9:321–332
Forseth IN, Ehleringer JR (1982b) Ecophysiology of two solar tracking desert winter annuals. II. Leaf movements, water relations and microclimate. Oecologia (Berlin) 54:41–49
Forseth IN, Ehleringer JR (1983) Ecophysiology of two solar tracking desert winter annuals. III. Gas exchange responses to light, CO2 and VPD in relation to long-term drought. Oecologia (Berlin) 57:344–351
Hunt CB (1975) Death Valley: Geology, Ecology, Archaeology. Univ. of California Press. Berkeley and Los Angeles, California
Jones HG (1978) Modelling diurnal trends of leaf water potential in transpiring wheat. J Appl Ecol 15:613–626
Lange OL, Schulze E-D, Kappen L, Buschbom U, Evenari M (1975) Photosynthesis of desert plants as influenced by internal and external factors. In: Perspectives in Biophysical Ecology. Ecological Studies 12, Gates DM, Schmerl RB (eds) Springer, New York, pp 121–143
Lösch R, Tenhunen JD (1981) Stomatal responses to humidity — Phenomenon and mechanism. In: Stomatal Physiol, Jarvis PG, Mansfield TA (eds) Cambridge University Press, New York, pp 137–161
Mooney HA, Ehleringer JR (1978) The carbon gain benefits of solar tracking in a desert annual. Plant Cell Env 1:307–311
Mooney HA, Ehleringer J, Björkman O (1977) The energy balance of leaves of the evergreen desert shrub Atriplex hymenelytra. Oecologia (Berlin) 29:301–310
Muchow RC, Fisher MJ, Ludlow MM, Myers RJK (1980) Stomatal behaviour of Kenaf and Sorghum in a semiarid tropical environment. II. During the day. Aust J Plant Physiol 7:621–628
Odening WR, Strain BR, Oechel WC (1974) The effect of descreasing water potential on net CO2 exchange of intact desert shrubs. Ecology 55:1086–1095
Oechel WC, Strain BR, Odening WR (1972) Tissue water potential, photosynthesis, 14C-labeled photosynthate utilization and growth in the desert shrub Larrea divaricata CAV. Ecol Mono 42:127–141
Pearcy RW, Harrison AT, Mooney HA, Björkman O (1974) Seasonal changes in net photosynthesis of Atriplex hymenelytra shrubs growing in Death Valley, California. Oecologia (Berlin) 17:111–121
Rawson HM, Turner NC, Begg JE (1978) Agronomic and physiological responses of Soybean and Sorghum crops to water deficits. IV. Photosynthesis, transpiration and water use efficiency of leaves. Aust J Plant Physiol 5:195–209
Schulze E-D, Lange OL, Evenari M, Kappen L, Buschbom U (1976) Am empirical model of net photosynthesis for the desert plant Hammada scoparia (Pomel) Iljin. I. Description and test of the model. Oecologia (Berlin) 22:355–372
Schulze E-D, Lang OL, Evanari M, Kappen L, Buschbom U (1980) Long-term effects of drought on wild and cultivated plants in the Negev Desert. II. Diurnal patterns of net photosynthesis and daily carbon gain. Oecologia (Berlin) 45:19–25
Seemann JR, Field C, Berry JA (1980) Photosynthetic capacity of desert winter annuals measured in situ. Carnegie Inst Wash Yb 79:146–147
Shackel KA, Hall AE (1979) Reversible leaflet movements in relation to drought adaptation of Cowpeas, Vigna unguiculata (L.) Walp. Aust J Plant Physiol 6:265–276
Shell GSG, Lang ARG (1976) Movements of sunflower leaves over a 24 h period. Agric Meteorol 16:161–170
Wainwright CM (1978) The floral biology and pollination ecology of two desert lupines. Bull Torrey Bot Club 105:24–38
Wallace CS, Szarek SR (1981) Ecophysiological studies of Sonoran Desert plants. VII. Photosynthetic gas exchange of winter ephemerals from sun and shade environments. Oecologia (Berlin) 51:57–61
Wong SC, Cowan IR, Farquhar GD (1979) Stomatal conductance correlates with photosynthetic capacity. Nature 282:424–426
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Forseth, I.N., Ehleringer, J.R. Ecophysiology of two solar tracking desert winter annuals. Oecologia 58, 10–18 (1983). https://doi.org/10.1007/BF00384536
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DOI: https://doi.org/10.1007/BF00384536