The relationship between phosphorus fractions, phosphatase activity and fertility in three tropical rain forest soils

M.L. Saker, R.A. Congdon, C.R. Maycock

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study investigates the availability of phosphorus and the forms of bound soil phosphorus present in three rain forest stands in north eastern Queensland. The soil types investigated differed significantly with respect to total soil phosphorus, with fertility decreasing in soils from basaltic to alluvial to granitic origin. At all sites only a small proportion of total phosphorus was available for plant uptake, with most being bound in organic matter and inorganic forms. A pot experiment was set up with Alphitonia petriei which was grown in soil collected from each of the three sites. After four months there was a significant difference in the dry weights, with plants showing stunted growth in the granitic soil collected from the site with the lower available phosphorus concentrations. These plants also had significantly higher root to shoot ratios and lower intracellular concentrations of phosphorus. Root phosphatase activity was greater for plants grown in soil low in available phosphorus.
Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalTropical Ecology
Volume40
Issue number2
Publication statusPublished - 1 Jan 1999

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tropical rain forests
phosphatase
forest soils
forest soil
soil fertility
fertility
phosphorus
soil
Alphitonia
root shoot ratio
tropical rain forest
forest stands
Queensland
rain forests
soil type
soil types
soil organic matter
shoot
uptake mechanisms
organic matter

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The relationship between phosphorus fractions, phosphatase activity and fertility in three tropical rain forest soils. / Saker, M.L.; Congdon, R.A.; Maycock, C.R.

In: Tropical Ecology, Vol. 40, No. 2, 01.01.1999, p. 261-267.

Research output: Contribution to journalArticle

Saker, M.L. ; Congdon, R.A. ; Maycock, C.R. / The relationship between phosphorus fractions, phosphatase activity and fertility in three tropical rain forest soils. In: Tropical Ecology. 1999 ; Vol. 40, No. 2. pp. 261-267.
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