Nutrient exports and land use in Australian catchments

Article Abstract:

Nutrient exports and land use in Australian catchments are evaluated in relation to North American conditions. North American data sets are significantly higher and therefore generally insufficient to make accurate assessment of Australian export rates. A similar difficulty is seen with regard to studying the effects of environmental factors on nutrient export. However, the method is useful in some cases, particularly in assessing differences in the availability of rain and runoff volume. Recommendations for assessing nutrient loads to check eutrophication are presented.

Planning, Evaluation, North America, Rivers, Land use, Eutrophication, Stream fauna, Stream animals

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Factors controlling seedling germination after fire in Mediterranean gorse shrublands. Implications for fire prescription

Article Abstract:

The factors controlling seedling germination after fire to make an evaluation from an ecological perspective of whether fire prescription is a suitable technique for fuel control in mature Mediterranean gorse shrublands are analyzed. The results suggest that small differences in the composition of vegetation play a decisive role in fire behavior, and have a decisive influence on the system's capacity for regeneration.

Germination, Vegetation dynamics, Shrublands

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Effect of cattle grazing and seedling size on the establishment of Araucaria cunninghamii in a silvo-pastoral system in Northeast Australia

Article Abstract:

The effect of seedling size on the survival and growth of Araucaria cunninghamii trees in a silvo-pastoral system on the Atherton Tablelands of northeast Australia was investigated. It was observed that with the use of an appropriate stocking rate, dairy cattle can be allowed to graze on the trees even after planting. Seedling size was found to have no contribution to the establishment of A. cunninghamii trees.

Research, Agroforestry, Araucariaceae, Trees, Care of, Tree care

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