A Climatic Index for the Leaching Factor in Soil Formation

Prescott, J. A.

doi:10.1111/j.1365-2389.1950.tb00714.x

Cited by 68 publications

(22 citation statements)

References 9 publications

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“…Firman, 1969); -an aeolian-derived, coarser A horizon (e.g. Bishop et al, 1980); -climatically influenced leaching of clay from the A to the B horizon (Prescott, 1949); -differential weathering (more intense weathering in the B compared with the A horizon) (e.g. Oertel, 1974); and -seasonal wetting and drying and associated clay illuviation (e.g.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry (δ13C, δ15N, 13C NMR) and residence times (14C and OSL) of soil organic matter from red-brown earths of South Australia: Implications for soil genesis

et al. 2006

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Section: Introductionmentioning

confidence: 99%

Geochemistry (δ13C, δ15N, 13C NMR) and residence times (14C and OSL) of soil organic matter from red-brown earths of South Australia: Implications for soil genesis

et al. 2006

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“…The Prescott Index (Prescott 1950 sure of the relative moisture levels present in an area, taking into consideration rainfall and evaporation. The measure used was the mean within a 500 m radius based on 25 m grid cells.…”

Section: Methodsmentioning

confidence: 99%

Habitat relationships and presence of the threatened heath frog Litoria littlejohni (Anura: Hylidae) in central New South Wales, Australia

Lemckert¹

2010

Endang. Species. Res.

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The heath frog Litoria littlejohni has been recorded from only scattered locations in south-eastern Australia, and habitat specificity may determine this rarity. I tested for relationships between the presence/absence of this species and habitat at 2 scales. A logistic regression was used to compare 10 presence and 36 absence sites to habitat variables at ponds located in central New South Wales. Habitat information derived from Geographic Information System (GIS) datalayers was compared to 51 known presence and 13 000 absence (null) sites located within 220 km of Sydney. A predictive regression tree was also created using the 51 presence and 1000 of the absence sites. In the Watagan Mountains, heath frog presence showed a significant negative relationship with the percentage of grass cover in the surrounding forest. Heath frog presence sites in the Sydney region were positively associated with moist environments (Prescott Index) and negatively associated with terrain roughness. The regression tree indicated a 94% probability of presence where the Prescott Index was >1.2 and the solar radiation index was >13.4. These results indicate that heath frogs are present in moist, sunny areas that are relatively flat. However, these variables are too broad to accurately predict heath frog presence at a specific water body. Based on this information, the heath frog is absent from many apparently suitable sites. Thus, its patchy distribution, if habitat related, results from a yet to be measured variable. KEY WORDS: Habitat relationships · Litoria littlejohni · GIS · PresenceResale or republication not permitted without written consent of the publisher OPEN PEN

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“…The major scientific interests of Prof. J. A. Prescott were in the development, chemistry and physics of Australian soils (Prescott 1936, 1938a, 1938b, 1944, 1949, Prescott & Pendleton 1952. Plant biochemist, Prof. J. G. Wood, was interested in the survival of native plants in the seasonally-droughted, nutrient-poor Australian landscapes (Wood 1925(Wood , 1932(Wood , 1933a(Wood , 1933b(Wood , 1934.…”

Section: The Development Of Ecosystem Studies In Australiamentioning

confidence: 99%

Management of Biodiversity in Australia

Specht

2014

JEE

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The concept of holistic ecosystem research, termed community-physiology, has gradually developed over the last 150 years. The discipline of community-physiology investigates the physico-chemical processes that determine the structure, growth and biodiversity of plant communities (with associated consumers and decomposers), both above and below ground, in space and time, from the tropical north to the tempera te south of Australia. These physico-chemical processes (aerodynamic fluxes -frictional, thermal, evaporative ± atmospheric salinity -plus available soil water and soil nutrients) need to be clearly enunciated and integrated in 'ecosystem models' in order to predict the effect of perturbations (such as Global Warming, nutrient pollution, invasive biota, fire, overgrazing, etc.) on Australian ecosystems. An increase in global temperatures of 2 o C is predicted to affect the development of the foliage covers of overstorey and understorey strata resulting in open-forests -> woodlands -> open-woodlands -> tall shrublands -> low shrublands throughout Australia.In order to conserve Australian biota for posterity, community-physiologists, ecosystem modelers and environmental impact ecologists must have a deep understanding of the eco-physiology of producers, consumers and decomposers that compose an ecosystem and how these organisms interact with the continually-changing physico-chemical processes in the atmosphere and soil, in space and time.

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A Climatic Index for the Leaching Factor in Soil Formation

Cited by 68 publications

References 9 publications

Geochemistry (δ13C, δ15N, 13C NMR) and residence times (14C and OSL) of soil organic matter from red-brown earths of South Australia: Implications for soil genesis

Geochemistry (δ13C, δ15N, 13C NMR) and residence times (14C and OSL) of soil organic matter from red-brown earths of South Australia: Implications for soil genesis

Habitat relationships and presence of the threatened heath frog Litoria littlejohni (Anura: Hylidae) in central New South Wales, Australia

Management of Biodiversity in Australia

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