forester Articles
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Shifts in plant nutrient use strategies under secondary forest succession
Abstract In evergreen broad-leaved forests (EBLFs) in Tiantong National Forest Park, Eastern China, we studied the soil chemistry and plant leaf nutrient concentration along a chronosequence of secondary forest succession. Soil total N, P and leaf N, P concentration of the most abundant plant species increased with forest succession. We further examined leaf lifespan, leaf nutrient ...
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Nutrient sorption dynamics of resin membranes and resin bags in a tropical forest
Plant root simulator (PRS) probes, a resin membrane technology, are increasingly used to measure soil nutrient availability in agricultural and nonagricultural systems. Like other resin technologies, the charged surface is meant to sorb nutrients until saturation; however, there is evidence that it acts as a dynamic exchanger in soils with low nutrient availability. This study compared the ...
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Impact of an insecticide changes with amount of leaf litter input: Implications for amphibian populations
Changes in percentage of forest cover can influence nutrient levels in aquatic systems and change abiotic conditions that may influence species. The authors examined how increasing amounts of leaf litter influenced toxicity of the insecticide carbaryl using larval green frogs (Rana clamitans) in outdoor mesocosm ponds. Insecticides can have direct negative effects on individual physiology and ...
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Defense characteristics of seral deciduous broad-leaved tree seedlings grown under differing levels of CO2 and nitrogen
Mixed broad-leaved forests are abundantly populated by several kinds of herbivore species in northern Japan. The life of herbivores depends strongly on the quality of food leaves. Leaf quality is changing with increasing atmospheric CO2 and nitrogen deposition. Four seral species of deciduous broad-leaved tree seedlings (alder, birch, oak and maple) were raised in all four combinations of two ...
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Impacts of fertilization on water quality of a drained pine plantation: a worst case scenario
Received for publication December 8, 2008. Intensive plantation forestry will be increasingly important in the next 50 yr to meet the high demand for domestic wood in the United States. However, forest management practices can substantially influence downstream water quality and ecology. This study analyses, the effect of fertilization on effluent water quality of a low gradient drained coastal ...
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Using coir as a growing susbstrate - sustainably and ethically
Manufactured from the inner husk of coconuts, coir is, but its very nature, produced in distant, and often developing, countries. This means that there is also an ethical slant to consider, as well as the question of shipping costs and carbon use. As retailers apply more pressure on their suppliers to focus on sustainability and ethics, these points are becoming increasingly important. Growers ...
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