Summary
To determine the effects of elevated CO2 and soil moisture status on growth and niche characteristics of birch and maple seedlings, gray birch (Betula populifolia) and red maple (Acer rubrum) were experimentally raised along a soil moisture gradient ranging from extreme drought to flooded conditions at both ambient and elevated atmospheric CO2 levels. The magnitude of growth enhancement due to CO2 was largely contingent on soil moisture conditions, but differently so for maple than for birch seedlings. Red maple showed greatest CO2 enhancements under moderately moist soil conditions, whereas gray birch showed greatest enhancements under moderately dry soil conditions. Additionally, CO2 had a relatively greater ameliorating effect in flooded conditions for red maple than for gray birch, whereas the reverse pattern was true for these species under extreme drought conditions. For both species, elevated CO2 resulted in a reduction in niche breadths on the moisture gradient; 5% for gray birch and 23% for red maple. Species niche overlap (proportional overall) was also lower at elevated CO2 (0.98 to: 0.88: 11%). This study highlights the utility of of experiments crossing CO2 levels with gradients of other resources as effective tools for elucidating the potential consequences of elevated CO2 on species distributions and potential interactions in natural communities.
References
Bazzaz FA (1987) Experimental studies on the evolution of niche in successional plant populations. In: Gray AJ, Crawley MJ, Edwards PJ (eds) Colonizing, Succession and Stability. Blackwell Scientific Publications, Oxford
Bazzaz FA (1990) The response of natural ecosystems to the rising global CO2 levels. Ann Rev Ecol System 21: 167–196
Bazzaz FA, Miao SL (1992) Successional status, seed size, and response of seedlings of six temperate tree species to CO2, Light, and Nutrient Availability: A Search For Patterns. Ecology
Bolin B, Doos B, Jaeger J, Warrick RA (1986) The greenhouse effect, climatic change, and ecosystems. Scope 29
Burns RM, Honkala BH (1990) Silvics of Forest Trees of the United States, Volume 2: The Hardwoods. U. S. Dep. Agric. Agric. Handb. No. 21
Carlson RW, Bazzaz FA (1982) Photosynthetic and growth response to fuminigation with SO2 at elevated CO2 for C3 and C4 plants. Oecologia 58: 188–193
Conroy JP, Barlow EWR, Bevege DI (1986) Response of Pinus radiata seedlings to carbon dioxide enrichment at different levels of water and phosphorus: growth, morphology and anatomy. Ann Bot 57: 165–177
Eamus D, Jarvis PG (1989) The direct effects of increase in the global atmospheric CO2 concentration on natural and commercial temperature trees and forests. Advance in Ecol Res 19: 1–53
Hilbert DW, Reynolds JF, Bazzaz FA (1991) Effects of carbon dioxide enrichment on plant communities: models of competition in species mixtures based on scaling single plant responses. Bull. Ecol Soc Am 72: 142
Hinkley TM, Lassoie JP, Running SW (1978) Temporal and Spatial Variations in the water status of forest trees. For Sci Monograph 20: 1–71
Keddy PA (1991) Working with heterogeneity: an operator's guide to environmental gradients. In Kolasa J, Pickett TA (eds) Ecol Heter pp 181–201 Springer Verlag, New York
Keeling CD (1986) Atmospheric CO2 concentrations. Manua Loa Observatory, Hawaii 1958–1986. NDP-001/R1. Carbon dioxide information analysis center. Oak Ridge, Tenn Oak Ridge Natl Lab
Kozlowski T, Kramer PJ, Pallardy SG (1991) The Physiological Ecology of Woody Plants. Academic Press, New York
Levins R (1968) Evolution in changing environments. Princeton University Press, Princeton, New Jersey, USA
Luxmoore RJ, O'Neill EG, Ells JM, Rogers HH (1986) Nutrient-uptake and growth responses of Virginia pine to elevated atmospheric CO2. J Environ Qual 15: 244–251
Mooney HA, Winner WE, Pell EJ (eds) (1991) Response of Plants to Multiple Stresses. Academic Press, New York
Pereira JS, Kozlowski TT (1977) Variations among woody angiosperms in response to flooding. Physiol Plant 41: 184–192
Peterson DL, Bazzaz FA (1984) Photosynthetic and growth responses of silver maple (Acer saccharinum L.) seedlings to flooding. Am Mid Natural 112: 261–272
Schoener TW (1970) Non-synchronous spatial overlap of lizards in patchy habitats. Ecology 51: 408–418
Schultze ED, Robichaux RH, Grace J, Rundel PW, Ehleringer JR (1987) Plant water balance. BioScience 37: 30–37
Tolley LC, Strain BR (1984) Effects of CO2 enrichment and water stress on growth of Liquidambar styraciflua and Pinus taeda seedlings. Can J Bot 62: 2135–2139
Tolley LC, Strain BR (1985) Effects of CO2 enrichment and water stress on gas exchange of Liquidambar styraciflua and Pinus taeda seedlings grown under different irradiance levels. Oecologia 65: 166–172
Tripepi RR, Mitchell CA (1984) Stem hypoxia and root respiration of flooded maple and birch. Physiol Plant 60: 567–571
Whittaker RH (1975) Communities and Ecosystems 2nd ed. Mac-Millan Pub, New York
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Miao, S.L., Wayne, P.M. & Bazzaz, F.A. Elevated CO2 differentially alters the responses of coocurring birch and maple seedlings to a moisture gradient. Oecologia 90, 300–304 (1992). https://doi.org/10.1007/BF00317191
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DOI: https://doi.org/10.1007/BF00317191