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DOI | 10.3159/TORREY-D-18-0002.1 |
Determinants of mortality in Pinus banksiana (Pinaceae) stands during an ice storm and its effect on stand spatial structure | |
Markham, John; Adorno, Bruno Vargas; Weisser, Nathalia | |
发表日期 | 2019 |
ISSN | 1095-5674 |
EISSN | 1940-0616 |
卷号 | 146期号:2页码:111-118 |
英文摘要 | Ice storms are a major source of tree mortality in some regions of the eastern North American deciduous forest, but are rare in the boreal forest. As climate changes, ice storms are predicted to be more common in the boreal forest, creating new challenges for forest management. In 2012, an ice storm damaged Pinus banksiana (Lamb.) stands throughout southeast Manitoba, Canada. We assessed damage in a 98- and a 32-yr-old stand. In both stands, half the trees broke near the base of the crown. Trees with a deeper crown were more likely to break in the young stand and less likely to break in the old stand. In the young stand taller trees were also more likely to break. There was no relationship between tree diameter and the probability of a tree breaking in either stand. Tree mortality increased the bare area around surviving trees by 52% and 119% in the young and old stands, respectively. This resulted in a 42% increase in canopy openness in the old stand but did not alter the pattern of spatial distribution of trees. Before the storm, trees in the young stand showed a dispersed distribution, indicative of density-dependent mortality. This dispersion was lost after the storm and suggests that, along with selection of shorter trees, ice storms reorganize the structure of forests undergoing self-thinning. |
WOS研究方向 | Plant Sciences |
来源期刊 | JOURNAL OF THE TORREY BOTANICAL SOCIETY |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/97192 |
作者单位 | Univ Manitoba, Dept Biol Sci, Winnipeg, MB R3T 2N2, Canada |
推荐引用方式 GB/T 7714 | Markham, John,Adorno, Bruno Vargas,Weisser, Nathalia. Determinants of mortality in Pinus banksiana (Pinaceae) stands during an ice storm and its effect on stand spatial structure[J],2019,146(2):111-118. |
APA | Markham, John,Adorno, Bruno Vargas,&Weisser, Nathalia.(2019).Determinants of mortality in Pinus banksiana (Pinaceae) stands during an ice storm and its effect on stand spatial structure.JOURNAL OF THE TORREY BOTANICAL SOCIETY,146(2),111-118. |
MLA | Markham, John,et al."Determinants of mortality in Pinus banksiana (Pinaceae) stands during an ice storm and its effect on stand spatial structure".JOURNAL OF THE TORREY BOTANICAL SOCIETY 146.2(2019):111-118. |
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