The effect of icing events on the death and regeneration of North American trees
| Autor: | David F. Greene, Olga J. Proulx, Kathleen F. Jones |
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| Rok vydání: | 2021 |
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| Zdroj: | Plant Disturbance Ecology ISBN: 9780128188132 Plant Disturbance Ecology ISBN: 9780120887781 Plant Disturbance Ecology |
| Popis: | Although ice events also occur in the boreal forest and west of the prairies, little is written about the effect of freezing precipitation on forests in North America. The term “freezing precipitation” refers to both freezing rain with drop diameters of about 1 mm, and freezing drizzle with drop diameters of about 0.1 mm. The primary objective of this chapter is to introduce a biomechanical interpretation of branch breakage as a function of ice thickness, wind speed, and branch length. The chapter covers recent studies of ice events that adopt a more analytical approach to freezing precipitation events and forest damage. While research interests and methods vary widely, studies have centered on species-specific responses and have often been presented as an ordinal scale comparison of species' susceptibility to damage. This more recent literature leaves the impression that everything from accumulated ice thickness, wind velocity, topography, tree size (bole diameter and major branch diameter and length), and species' intrinsic resistance to injury exemplifies attributes such as branching architecture and wood density, and has led to little agreement on species-specific or size-specific susceptibility. The chapter concludes that a process-oriented approach could not merely provide useful data sets but unambiguously specify what should be measured in future investigations. |
| Databáze: | OpenAIRE |
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