Effects of elevated atmospheric CO(2) on phenology, growth and crown structure of Scots pine (Pinus sylvestris) seedlings after two years of exposure in the field.

Three-year-old Scots pine (Pinus sylvestris L.) seedlings were grown for two years in the ground in open-top chambers supplied with either an ambient or elevated (ambient + 400 &mgr;mol mol(-1)) CO(2) concentration. Phenological observations and measurements of height and stem diameter growth, absolute and relative growth rates, starch and soluble carbohydrate concentrations of the needles, and crown structure and needle properties were made at frequent intervals throughout the two growing seasons. Elevated CO(2) significantly advanced the date of bud burst in both years. The increase in total needle area in response to elevated CO(2) was accounted for by longer shoots and an increase in individual needle area in the first year, and by an increase in the number and length of shoots in the second year. Stem diameter and tree height were enhanced more by the elevated CO(2) treatment in the first year than in the second, indicating a decreased effect of CO(2) on growth over time. This was confirmed by a study of absolute and relative growth rates of leader shoots. During the first growing season of CO(2) enrichment, mean weekly relative growth rates over the growing season (RGR(m)) were significantly enhanced. During the second year, RGR(m) in ambient CO(2) closely matched that in elevated CO(2).

[1]  R. Ceulemans,et al.  Elevated atmospheric CO2 increases fine root production, respiration, rhizosphere respiration and soil CO2 efflux in Scots pine seedlings , 1998 .

[2]  Peter S. Curtis,et al.  A meta-analysis of elevated CO2 effects on woody plant mass, form, and physiology , 1998, Oecologia.

[3]  S. Kellomäki,et al.  Effects of long-term CO2 and temperature elevation on crown nitrogen distribution and daily photosynthetic performance of Scots pine , 1997 .

[4]  P. Jarvis,et al.  Growth Response of Young Birch Trees (Betula pendulaRoth.) After Four and a Half Years of CO2Exposure , 1997 .

[5]  A. Raschi,et al.  Thirty years of in situ tree growth under elevated CO2: a model for future forest responses? , 1997 .

[6]  K. Pregitzer,et al.  Populus tremuloides photosynthesis and crown architecture in response to elevated CO2 and soil N availability , 1997, Oecologia.

[7]  Modelling the effects of elevated atmospheric CO2 on crown development, light interception and photosynthesis of poplar in open top chambers , 1997 .

[8]  Canopy CO2 exchange of Scots pine and its seasonal variation after four-year exposure to elevated CO2 and temperature , 1996 .

[9]  F. Day,et al.  Effects of elevated atmospheric CO2 on fine root length and distribution in an oak‐palmetto scrub ecosystem in central Florida , 1996 .

[10]  H. Hänninen,et al.  The effects of long‐term elevation of air temperature and CO on the frost hardiness of Scots pine , 1996 .

[11]  D. Tissue,et al.  Growth and photosynthesis of loblolly pine (Pinus taeda) after exposure to elevated CO(2) for 19 months in the field. , 1996, Tree physiology.

[12]  C. Nietch,et al.  Increased growth efficiency of Quercus alba trees in a CO2 -enriched atmosphere. , 1995, The New phytologist.

[13]  R. Ceulemans,et al.  Effects of elevated atmospheric CO2 on growth, biomass production and nitrogen allocation of two Populus clones. , 1995 .

[14]  P. Jarvis,et al.  Trees differ from crops and from each other in their responses to increases in CO2 concentration , 1995 .

[15]  J. Pushnik,et al.  The effect of elevated carbon dioxide on a Sierra-Nevadan dominant species: Pinus ponderosa , 1995 .

[16]  P. Curtis,et al.  Interacting effects of soil fertility and atmospheric CO2 on leaf area growth and carbon gain physiology in Populus×euramericana (Dode) Guinier. , 1995, The New phytologist.

[17]  L. Mortensen.  The Influence of Carbon Dioxide or Ozone Concentration on Growth and Assimilate Partitioning in Seedlings of Nine Conifers , 1994 .

[18]  S. Idso,et al.  Plant responses to atmospheric CO2 enrichment in the face of environmental constraints: a review of the past 10 years' research , 1994 .

[19]  D. Wilkins,et al.  Effects of elevated CO(2) on growth and chloroplast proteins in Prunus avium. , 1994, Tree physiology.

[20]  A. Friend,et al.  Effects of elevated CO(2), nutrition and climatic warming on bud phenology in Sitka spruce (Picea sitchensis) and their impact on the risk of frost damage. , 1994, Tree physiology.

[21]  E. Beuker.  Adaptation to climatic changes of the timing of bud burst in populations of Pinus sylvestris L. and Picea abies (L.) Karst. , 1994, Tree physiology.

[22]  P. Gross,et al.  Interactive effects of elevated CO(2) and soil drought on growth and transpiration efficiency and its determinants in two European forest tree species. , 1994, Tree physiology.

[23]  M. Mousseau,et al.  Interactive effects of elevated CO(2) and mineral nutrition on growth and CO(2) exchange of sweet chestnut seedlings (Castanea sativa). , 1994, Tree physiology.

[24]  W. Schlesinger,et al.  Offsetting changes in biomass allocation and photosynthesis in ponderosa pine (Pinus ponderosa) in response to climate change. , 1994, Tree physiology.

[25]  Reinhart Ceulemans,et al.  Tansley Review No. 71 Effects of elevated atmospheric CO2on woody plants , 1994 .

[26]  A. McDonald,et al.  Response of small birch plants (Betula pendula Roth.) to elevated CO2 and nitrogen supply , 1993 .

[27]  R. Guy,et al.  Carbohydrate reserve accumulation and depletion in Engelmann spruce (Picea engelmannii Parry): effects of cold storage and pre-storage CO(2) enrichment. , 1993, Tree physiology.

[28]  J. Seiler,et al.  Interactive role of elevated CO[sub 2], nutrient limitations, and water stress in the growth responses of red spruce seedlings , 1993 .

[29]  H. Hänninen,et al.  Effect of increased winter temperature on the onset of height growth of Scots pine: a field test of a phenological model. , 1993 .

[30]  D. Eamus,et al.  The Influence of CO2 Enrichment on Growth, Nutrient Content and Biomass Allocation of Maranthes corymbosa , 1993 .

[31]  R. Norby,et al.  Leaf area compensation and nutrient interactions in CO2‐enriched seedlings of yellow‐poplar (Liriodendron tulipifera L.) , 1991 .

[32]  K. Brown.  Carbon dioxide enrichment accelerates the decline in nutrient status and relative growth rate of Populus tremuloides Michx. seedlings. , 1991, Tree physiology.

[33]  D. Durall,et al.  STARCH DETERMINATION BY PERCHLORIC ACID VS ENZYMES : EVALUATING THE ACCURACY AND PRECISION OF SIX COLORIMETRIC METHODS , 1991 .

[34]  J. Carpenter,et al.  Are freezing and dehydration similar stress vectors? A comparison of modes of interaction of stabilizing solutes with biomolecules , 1990 .

[35]  F. A. Bazzaz,et al.  The Response of Natural Ecosystems to the Rising Global CO2 Levels , 1990 .

[36]  J. Guehl,et al.  Differential growth response to atmospheric carbon dioxide enrichment in seedlings of Cedrusatlantica and Pinusnigra ssp. Laricio var. Corsicana , 1989 .

[37]  M. Cannell,et al.  Date of budburst of fifteen tree species in Britain following climatic warming , 1989 .

[38]  H. Margolis,et al.  Influence of short-term atmospheric CO2 enrichment on growth, allocation patterns, and biochemistry of black spruce seedlings at different stages of development , 1989 .

[39]  R. Norby,et al.  Growth dynamics and water use of seedlings of Quercus alba L. in CO2 -enriched atmospheres. , 1989, The New phytologist.

[40]  P. Jarvis,et al.  The Direct Effects of Increase in the Global Atmospheric CO2 Concentration on Natural and Commercial Temperate Trees and Forests , 1989 .

[41]  K. Higginbotham,et al.  Effects of carbon dioxide enrichment and nitrogen supply on growth of boreal tree seedlings. , 1986, Tree physiology.

[42]  R. Norby,et al.  Effects of Atmospheric CO(2) Enrichment on the Growth and Mineral Nutrition of Quercus alba Seedlings in Nutrient-Poor Soil. , 1986, Plant physiology.

[43]  Pierce H. Jones,et al.  Growth, dry matter partitioning, and diurnal activities of RuBP carboxylase in citrus seedlings maintained at two levels of CO2 , 1986 .

[44]  M. Cannell,et al.  CLIMATIC WARMING, SPRING BUDBURST AND FROST DAMAGE ON TREES , 1986 .

[45]  J. Conroy,et al.  Response of Pinus radiata seedlings to carbon dioxide enrichment at different levels of water and phosphorus: growth, morphology and anatomy , 1986 .

[46]  K. Higginbotham,et al.  Physiological ecology of lodgepole pine (Pinuscontorta) in an enriched CO2 environment , 1985 .

[47]  N. Sionit,et al.  Long-term atmospheric CO2 enrichment affects the growth and development of Liquidambarstyraciflua and Pinustaeda seedlings , 1985 .

[48]  A. Ericsson.  Effects of Fertilization and Irrigation on the Seasonal Changes of Carbohydrate Reserves in Different Age‐Classes of Needle on 20‐Year‐Old Scots Pine Trees (Pinus silvestris) , 1979 .

[49]  P. Jarvis,et al.  Growth Rates of Woody Plants , 1964 .

[50]  F. W. Fales.  The assimilation and degradation of carbohydrates by yeast cells. , 1951, The Journal of biological chemistry.