Full TGIF Record # 3503
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Web URL(s):http://www.jstor.org/stable/pdfplus/2259869.pdf?acceptTC=true
    Last checked: 08/09/2012
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Publication Type:
i
Refereed
Author(s):Fitter, A. H.
Author Affiliation:Department of Biology, University of York, Heslington, York
Title:Influence of soil heterogeneity on the coexistence of grassland species
Source:Journal of Ecology. Vol. 70, No. 1, March 1982, p. 139-148.
# of Pages:10
Related Web URL:http://www.jstor.org/stable/info/2259869
    Last checked: 08/09/2012
    Notes: Abstract only
Keywords:TIC Keywords: Grasslands; Roots; Density; Festuca rubra subsp. rubra; Holcus lanatus; Lolium perenne; Plantago lanceolata; Poa trivialis; Chemical composition
Geographic Terms:UK
Abstract/Contents:"(1) In fifteen lowland grasslands, as the quotient of root density in the lower (5-10 cm) layer of soil to that in the upper (0-5 cm) layer increases so there is a decrease in number of species per unit area and in an index of dominance. (2) This quotient, a measure of the heterogeneity of root development, was not related to the difference in pH or concentration of extractable phosphate or potassium in the two soil layers. (3) In a pot experiment an infertile acid sand and a fertile calcareous loam, either mixed or in distinct upper and lower soil layers, were used to grow a standard mixture of five grassland plants. Dominance of one or two species was less marked where there was a distinct lower layer of soil, and this was true irrespective of the total above-ground biomass of all plants. (4) The amount of calcium in the shoots indicates that the species differed in rooting depth, although the spatial distribution of the root system was not analysed. (5) Soil heterogeneity can therefore be shown experimentally to influence the coexistence of species. The distribution of roots in the field may be of great importance in this respect."
Language:English
References:31
Note:Summary appears as abstract
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fitter, A. H. 1982. Influence of soil heterogeneity on the coexistence of grassland species. J. Ecol. 70(1):p. 139-148.
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http://www.jstor.org/stable/pdfplus/2259869.pdf?acceptTC=true
    Last checked: 08/09/2012
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    Access conditions: Item is within a limited-access website
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