Summary
Karri forest soils contain negligible concentrations of labile-P, low concentrations of total P and more P in organic forms than inorganic. The ratio of organic P to inorganic P was lowest (1:2) in recently burnt surface soils and greatest (7:1) at depth in soil that had been undisturbed for long periods of time. Phosphomonoesterase and phosphodiesterase activities (to 10 cm depth, phosphomonoesterase 700–1300; phosphodiesterase 2000–2400 μg nitrophenol released h-1 g-1 fresh weight) were comparable to those in other, organically rich forest soils. The optimum pH for phosphatase activities were within 1–2 units of soil pH (∼6) and little reduction in activity was observed over the pH range 4–8. Phosphatase activity was reduced by air-drying (up to 20-fold reduction) and was almost entirely absent in soils that were heat-affected as a result of logging/burning operations. Neither phosphomonoesterase nor phosphodiesterase were directly related to soil P fractions or total P. A reduction in P demand is postulated as the cause of reduced phosphatase activity and the increased concentration of organic P with increasing soil depth.
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References
Adams MA, Byrne LT (1989) 31P-NMR analysis of phosphorus compounds in extracts of surface soils from selected Karri (Eucalyptus diversicolor F. Muell.) forests. Soil Biol Biochem 21:523–528
Attiwill PM, Leeper GW (1987) Forest soils and nutrient cycles. Melbourne University Press, Melbourne
Bowman RA, Cole CV (1978) An exploratory method for fractionation of organic phosphorus from grassland soils. Soil Sci 125:95–101
Brookes PC, Powlsen DS (1981) Preventing phosphorus losses during perchloric acid digestion of sodium bicarbonate soil extracts. J Sci Food Agric 32:671–674
Browman MG, Tabatabai MA (1978) Phosphodiesterase activity of soils. Soil Sci Soc Am J 42:284–290
Chang SC, Jackson ML (1967) Fractionation of soil phosphorus. Soil Sci 84:133–144
Harrison AF (1983) Relationship between intensity of phosphatase activity and physicochemical properties in woodland soils. Soil Biol Biochem 15:93–99
Hedley MJ, Stewart JWB, Chauhan BS (1982) Changes in inorganic and organic soil phosphorus fractions induced by cultivation practises and by laboratory incubations. Soil Sci Soc Am J 46:970–976
Hingston FJ, Turton AG, Dimmock GM (1979) Nutrient distribution in karri (Eucalyptus diversicolor F. Muell.) ecosystems in southwest Western Australia. For Ecol Manage 2:133–158
Ho I (1979) Acid phosphatase in forest soil. For Sci 25:567–568
Kelly J, Lambert MJ, Turner J (1983) Available phosphorus forms in forest soils and their possible ecological significance. Commun Soil Sci Plant Anal 14:1217–1234
Marschner H (1986) The mineral nutrition of higher plants. Academic Press, London
McGill WB, Cole CV (1981) Comparative aspects of cycling of organic C, N, S and P through soil organic matter. Geoderma 26:267–286
Murphy J, Riley JP (1962) A modified single solution method for the determination of phosphate in natural waters. Anal Chim Acta 27:31–36
Nannipieri P, Grego S, Ceccanti S (1990) Ecological significance of the biological activity in soil. In: Bollag JM, Stoztky G (eds) Soil biochemistry, vol 6. Marcel Dekker, New York, pp 293–355
Nakas JP, Gould WD, Klein DA (1987) Origin and expression of phosphatase activity in a semi-arid grassland soil. Soil Biol Biochem 19:13–18
Olsen SR, Cole CV, Watanabe FS, Dean LA (1954) Estimation of available phosphorus in soils by exctraction with sodium bicarbonate. USDA Circular no 939, Washington DC
Olsen SR, Sommers LE (1982) Phosphorus. In: Page AL, Miller RH, Keeney DR (eds) Methods of soil analysis, Part 2. Chemical and Microbiological properties. Am Soc Agron, Soil Sci Soc Am, Madison, Wisconsin, pp 403–430
Pang PCK, Kolenko H (1986) Phosphomonoesterase activity in forest soils. Soil Biol Biochem 18:35–40
Sarathchandra SU, Perrot KW (1981) Determination of phosphatase and arylsulphatase activities in soils. Soil Biol Biochem 13:543–545
Saunders NMH, Williams EQ (1955) Observations on the determination of total organic phosphorus in soils. J Soil Sci 6:245–267
Sparling GP, Speir TW, Whale KN (1986) Changes in microbial biomass C, ATP content, soil phospho-monoesterase and phosphodiesterase activity following air-drying of soils. Soil Biol Biochem 18:363–370
Speir TW, Ross DJ (1978) Soil phosphatase and sulphatase. In: Burns RG (ed) Soil enzymes. Academic Press, London, pp 197–250
Stewart HTL, Hopmans P, Flinn DW, Croatto G (1990) Harvesting effects on phosphorus availability in a mixed eucalypt ecosystem in southeastern Australia. For Ecol Manage 36:149–162
Stewart JWB, Tiessen H (1987) Dynamics of soil organic phosphorus. Biogeochemistry 4:41–60
Tabatabai MA, Bremner JM (1969) Use of p-nitrophenolphosphate for assay of soil phosphatase activity. Soil Biol Biochem 1:301–307
Tarafdar JC, Claassen N (1988) Organic phosphorus compounds as a phosphorus source for higher plants through the activity of phosphatases produced by plant roots and microorganisms. Biol Fertil Soils 5:308–312
Trasar-Cepeda MC, Gil-Sotres F (1987) Phosphatase activity in acid high organic matter soils in Galicia (NW Spain). Soil Biol Biochem 19:281–287
Turner J, Lambert MJ (1985) Soil phosphorus forms and related tree growth in a long term Pinus radiata phosphate fertilizer trial. Commun Soil Sci Plant Anal 16:275–288
Turner J, Lambert MJ (1986) Effects of forest harvesting nutrient removals on soil nutrient reserves. Oecologia 70:140–148
Wood T, Bormann FH, Voigt GK (1984) Phosphorus cycling in a northern hardwood forest: Biological and chemical control. Science 223:391–393
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Adams, M.A. Phosphatase activity and phosphorus fractions in Karri (Eucalyptus diversicolor F. Muell.) forest soils. Biol Fertil Soils 14, 200–204 (1992). https://doi.org/10.1007/BF00346061
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DOI: https://doi.org/10.1007/BF00346061