Factors affecting vegetation on a serpentine soil: II. Chemical composition of foliage and soil
AuthorsRobert L. Koenigs
William A. Williams
Milton B. Jones
Authors AffiliationsRobert L. Koenigs was Research Assistant and is now Environmental Consultant, 9232 Lomker Court, Santee, CA 92071; William A. Williams was Professor, Department of Agronomy and Range Science, Davis; Milton B. Jones was Agronomist, Department of Agronomy and Range Science, Hopland Field Station; Arthur Wallace was Professor, Laboratory of Nuclear Medicine and Radiation Biology, Los Angeles.
Hilgardia 50(4):15-26. DOI:10.3733/hilg.v50n04p012. August 1982.
Abstract does not appear. First page follows.
Serpentine soils have a unique combination of chemical characteristics that affect the vegetation found on them. Species growing on these soils are usually subjected to low concentrations of Ca, high concentrations of Mg, occasionally toxic levels of Ni, Cr, and Co, and deficiencies of Mo (proctor and (Woodell, 1975). N, P, K, and S deficiencies are known to be of importance on some serpentine soils (Jones, Williams, and Ruckman, 1977).
Several workers have demonstrated that different species, and even different races of a species, growing on the same soil will differ in their elemental composition (Collander, 1941); (Lyon et al. 1971); (Shewry and Peterson, 1975); (Johnston and Proctor, 1977). These differences may reflect differences in mechanisms of adaptation to these soils (especially in the case of such inhospitable soils as serpentine soils), although they do not reveal what the mechanisms are or even what concentrations are optimum. Optimum concentrations of these elements need to be defined for each species.
Experimental work, where the growth medium is varied under controlled conditions, is necessary to accurately define these optima (Walker, Walker, and Ashworth, 1955); (Marrsand Proctor, 1976). Nevertheless, the abundance and vigor of species in the field may prove to be related to soil and leaf concentrations of important elements. These relations might supply some information about optimum concentrations where experiment is impractical or where information is desired to help select species for further experimentation.
Four species dominate in the study area: Cupressus sagentii, Quercus durata, Arctostaphylos viscida, and Adenostoma fasciculatum. Cupressus sargentii and Q. durata are considered to be serpentine endemics (McMillan, 1956). Arctostaphylos viscida occurs both on and off serpentine in the Sierra Nevada, but is restricted to it in the Coast Range of California, U.S.A., where this study took place (J. Major, personal communication). Althought Adenostoma fasciculatum is very widespread in chaparral in California, serpentine ecotypes may occur. Arctostaphylos viscida and Q. durata were the most widespread species in our study area. Sites containing C. sargentii had significantly lower concentrations of Ca in the soil than sites containing Adenostoma fasciculatum (Part I). Arctostaphylos viscida was more abundant where C. sargentii occurred, and Q. durata was more abundant where Adenostoma fasciculatum occurred.
This paper examines differences in the concentration of elements in the four species. To improve understanding of the adaptive strategies of these species, it also correlates their abundance and size with nutrient concentrations in leaf and soil.
Forty sample stands were selected randomly from about 280 ha within the watersheds of Cedar and Pocock creeks (California, U.S.A.; latitude 38°47? N, longitude 122° 22? W). Within each stand, three transects, each 15 m long and 7.5 m apart, were laid out parallel to each other and to the contour of the slope in spring and summer, 1975,
Billings W. D. Vegetation and plant growth as affected by chemically altered rocks in the western Great Basin. Ecol. 1950. 31:62-74. DOI: 10.2307/1931361 [CrossRef]
Collanger R. Selective absorption of cations by higher plants. Plant Physiol. 1941. 16:691-720.
Dixon W. J. BMD Biomedical Computer Programs. 1973. Los Angeles: Univ. Calif. Press. 773p.
Johnston W. R., Proctor J. Metal concentrations in plants and soils from two British serpentine sites. Plant and Soil. 1977. 46:275-78. DOI: 10.1007/BF00693136 [CrossRef]
Jones M. B., Williams W. A., Ruckman J. E. Fertilization of Trifolium subterraneum L. growing on serpentine soils. Soil Sci. Soc. Amer. J. 1977. 41:87-89.
Lyon G. L., Peterson P. J., Brooks R. R., Butler G. W. Calcium, magnesium, and trace elements in a New Zealand serpentine flora. J. Ecol. 1971. 59:421-29. DOI: 10.2307/2258322 [CrossRef]
Madhok O. P. Magnesium nutrition of Helianthus annus L. and H. bolanderi Gray subspecies exilis Heiger 1965. Ph.D. Thesis, Univ. of Washington, Seattle.
Madhok O. P., Walker R. B. Magnesium nutrition of two species of sunflower. Plant Physiol. 1969. 44:1016-22. DOI: 10.1104/pp.44.7.1016 [CrossRef]
Main J. L. Differential responses to Mg and Ca by native populations of Agropyron species. Am. J. Botany. 1974. 61:931-37.
Marrs R. H., Proctor J. The response of serpentine and non-serpentine Agrostis stolonifera to magnesium and calcium. J. Ecol. 1976. 64:953-64.
McColl J. G., Humphreys F. R. Relationships between some nutritional factors and the distributions of Eucalyptus gummifera and E. maculata. Ecol. 1967. 48:766-71.
McMillan C. The edaphic restriction of Cupressus and Pinus in the coast ranges of central California. Ecol. Monographs. 1956. 26:177-212.
Proctor J., Woodell S. R. J. The ecology of serpentine soils. Adv. Ecol. Res. 1975. 9:255-366. DOI: 10.1016/S0065-2504(08)60291-3 [CrossRef]
Reeves R. D., Brooks R. B., Macfarlane R. M. Nickel uptake by Californian Streptanthus and Caulanthus with particular reference to the hyper-accumulator S. polygaloides Gray (Brassicaceae). Amer. J. Bol. 1981. 68:708-12.
Shewry P. R., Peterson P. J. Calcium and magnesium in plants and soil from a serpentine area on Unst, Shetland, Scotland. J. Appl. Ecol. 1975. 12:381-92.
Vlamis J. Growth of lettuce and barley as influenced by degree of calcium saturation of soil. Soil Sci. 1949. 67:453-66. DOI: 10.1097/00010694-194906000-00005 [CrossRef]
Walker R. B. The ecology of serpentine soils. II. Factors affecting plant growth on serpentine soils. Ecol. 1954. 35:259-66.
Walker R. B., Walker H. M., Ashworth P. R. Calcium-magnesium nutrition with special reference to serpentine soils. Plant Physiol. 1955. 30:214-21. DOI: 10.1104/pp.30.3.214 [CrossRef]
Wallace A., Romney E. M., Alexander G. V. Variation in the simultaneous analysis by emission spectrography of 24 elements in plant material. Commun. Soil Sci. Plant Anal. 1974. 5:45-50.
Waring R. H., Major J. Some vegetation of the California coastal redwood region in relation to gradients of moisture, nutrients, light, and temperature. Ecol. Monographs. 1964. 34:167-212. DOI: 10.2307/1948452 [CrossRef]
Webb L. J. Edaphic differentiation of some forest types in eastern Australia. II. Soil chemical factors. J. Ecol. 1969. 57:817-30. DOI: 10.2307/2258502 [CrossRef]
Wyn Jones R. G., Lunt O. R. The function of calcium in plants. Bol. Rev. 1967. 33:407-26.