Ecophysiological attributes of the native Acer saccharum and the exotic Acer platanoides in urban oak forests in Pennsylvania, USA.

When the exotic Acer platanoides L. (Norway maple) and the native A. saccharum Marsh. (sugar maple) grow together in the understories of urban Quercus forests in the eastern USA, average annual height growth increments are nearly twice as large in A. platanoides as in A. saccharum, 19.26 +/- 3.22 versus 10.01 +/- 1.69 cm. We examined several ecophysiological mechanisms that might be associated with the superior invasive ability and growth of A. platanoides in two urban oak forests in Pennsylvania. Leaf longevity was 12 days greater in A. platanoides than in A. saccharum. In addition, leaf mass/leaf area ratio was greater in A. platanoides than in A. saccharum (2.67 +/- 0.03 versus 2.32 +/- 0.02 mg cm(-2)); however, leaf thickness was significantly lower in A. platanoides than in A. saccharum suggesting that A. platanoides contains more dense palisade and mesophyll cell layers than A. saccharum. Field net photosynthesis (mass basis) and photosynthetic light response curves (area basis) indicated significantly greater carbon assimilation, and nitrogen and phosphorus use efficiencies in A. platanoides than in A. saccharum. Acer platanoides also exhibited higher water use efficiency than A. saccharum (0.88 +/- 0.12 versus 0.32 +/- 0.09 mmol CO(2) mol(-1) H(2)O). Acer platanoides exhibited significantly lower osmotic potentials than A. saccharum, but a similar relative water content at zero turgor. We conclude that A. platanoides utilizes light, water and nutrients more efficiently than A. saccharum.

[1]  Stephen P. Bonser,et al.  Plastic allometry in young sugar maple (Acer saccharum): adaptive responses to light availability , 1994 .

[2]  M. Abrams,et al.  Seasonal Tissue Water Relations of Four Successional Pennsylvania Barrens Species in Open and Understory Environments , 1994, International Journal of Plant Sciences.

[3]  M. Abrams,et al.  Relating Wet and Dry Year Ecophysiology to Leaf Structure in Contrasting Temperate Tree Species , 1994 .

[4]  C. K. Kaunzinger,et al.  Biological invasion of the Drew University (New Jersey) forest preserve by Norway maple (Acer platanoides L.). , 1993 .

[5]  M. Tyree,et al.  Hydraulic resistance in Acer saccharum shoots and its influence on leaf water potential and transpiration. , 1993, Tree physiology.

[6]  M. Abrams,et al.  Seasonal ecophysiology and leaf morphology of four successional Pennsylvania barrens species in open versus understory environments , 1993 .

[7]  E. C. Townsend,et al.  Radial growth response of understory sugar maple (Acer saccharum Marsh.) surrounding openings , 1992 .

[8]  J. Grace,et al.  Acclimation to Drought in Acer pseudoplatanus L. (Sycamore) Seedlings , 1992 .

[9]  M. Tyree,et al.  Hydraulic Conductivity Recovery versus Water Pressure in Xylem of Acer saccharum. , 1992, Plant physiology.

[10]  Community, edaphic, and historical analysis of mixed oak forests of the Ridge and Valley Province in central Pennsylvania , 1992 .

[11]  Marc D. Abrams,et al.  Fire and the Development of Oak Forests , 1992 .

[12]  G. Nowacki,et al.  Historical variation in fire, oak recruitment, and post-logging accelerated succession in central Pennsylvania , 1992 .

[13]  P. Reich,et al.  Leaf mass per area, nitrogen content and photosynthetic carbon gain in Acer saccharum seedlings in contrasting forest light environments , 1992 .

[14]  P. Reich,et al.  Water relations and gas exchange of Acer saccharum seedlings in contrasting natural light and water regimes. , 1992, Tree physiology.

[15]  J. L. Vankat,et al.  Communities and tree seedling distribution in Quercus rubra- and Prunus serotina-dominated forests in southwestern Pennsylvania , 1991 .

[16]  C. Lorimer,et al.  Early stand development on former oak sites in southwestern Wisconsin , 1991 .

[17]  G. MacDonald,et al.  Postglacial vegetation history of oak savanna in southern Ontario , 1991 .

[18]  J. S. Fralish,et al.  Comparison of Presettlement, Second-growth and Old-growth Forest on Six Site Types in the Illinois Shawnee Hills , 1991 .

[19]  M. Abrams,et al.  SUCCESSIONAL REPLACEMENT OF OLD-GROWTH WHITE OAK BY MIXED MESOPHYTIC HARDWOODS IN SOUTHWESTERN PENNSYLVANIA , 1990 .

[20]  M. Abrams.  Adaptations and responses to drought in Quercus species of North America. , 1990, Tree physiology.

[21]  David J. Nowak,et al.  History and Range of Norway Maple , 1990, Arboriculture & Urban Forestry.

[22]  H. Ellenberg,et al.  Vegetation Ecology of Central Europe. , 1989 .

[23]  Thomas J. Givnish,et al.  Adaptation to Sun and Shade: a Whole-Plant Perspective , 1988 .

[24]  S. Pallardy,et al.  The Influence of Resaturation Method and Tissue 3Quercus alba L. Seedlings , 1987 .

[25]  S. Pallardy,et al.  The influence of resaturation method and tissue type on pressure-volume analysis of Quercus alba L. seedlings , 1987 .

[26]  C. McGee,et al.  Budbreak for twenty-three upland hardwoods compared under forest canopies and in recent clearcuts , 1986 .

[27]  C. Lorimer.  Development of the red maple understory in northeastern oak forests. , 1984 .

[28]  L. G. Scheve.  Elements of biochemistry , 1984 .

[29]  P. Reich,et al.  Water Relations: Soil Fertility, and Plant Nutrient Composition of a Pygmy Oak Ecosystem , 1980 .

[30]  W. Watts.  Late Quaternary Vegetation of Central Appalachia and the New Jersey Coastal Plain , 1979 .

[31]  M. Tyree,et al.  The characteristics of seasonal and ontogenetic changes in the tissue – water relations of Acer, Populus, Tsuga, and Picea , 1978 .

[32]  P. Ladiges.  Some aspects of tissue water relations in three populations of Eucalyptus viminalis Labill , 1975 .

[33]  W. W. Payne.  HELICOCYTIC AND ALLELOCYTIC STOMATA: UNRECOGNIZED PATTERNS IN THE DI COTYLEDON AE , 1970 .

[34]  A. Murray.  A monograph of the Aceraceae , 1970 .

[35]  G. Krotkov,et al.  Adaptations of the Photosynthetic Mechanism of Sugar Maple (Acer saccharum) Seedlings Grown in Various Light Intensities , 1969 .

[36]  鈴木 時夫.  ○北米東部の落葉樹林 BRAUN, E.L.1950,Deciduous forests of Eastern North America, Blakiston Company, \4000. , 1953 .

[37]  V. M. Conway,et al.  Deciduous Forests of Eastern North America. , 1951 .

[38]  Frederic E. Clements,et al.  Nature and Structure of the Climax , 1936 .

[39]  J. W. Harshberger.  The vegetation of the New Jersey pine-barrens; an ecologic investigation , 2012 .