Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.foreco.2018.08.013 |
The road to oblivion - Quantifying pathways in the decline of large old trees | |
Lindenmayer, David B.1,2; Blanchard, Wade1; Blair, David1,2; McBurney, Lachlan1,2 | |
2018-12-15 | |
发表期刊 | FOREST ECOLOGY AND MANAGEMENT
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ISSN | 0378-1127 |
EISSN | 1872-7042 |
出版年 | 2018 |
卷号 | 430页码:259-264 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Large old hollow-bearing trees have a wide range of key ecological roles in forest and other ecosystems globally. Patterns and rates of mortality and decay of these trees had profound effects on the size and composition of their populations. Using an 18-year empirical study of large old trees in the Mountain Ash (Eucalyptus regnans) forests of the Central Highlands of Victoria, we sought to determine if there are particular patterns of decline that are shared by a proportion of the trees in a tree population. We also sought to identify drivers of decline of these trees by quantifying relationships between the condition state of trees (viz: tree form) and a range of covariates. We found that time, stand age and fire can individually and in combination, strongly affect the decay (and eventual collapse) of large old trees. In particular, we found compelling evidence that patterns of tree decline were markedly different in old growth forest (stands dating from similar to 1850) relative to three other younger age classes examined. Trees in older forest decayed less rapidly than trees of equivalent tree form in younger forest. Old growth stands also were characterized by trees in an overall much lower (more intact) form category than the other age classes of forest. A key pattern in our study was the rapid deterioration of large old trees in the youngest aged stands (viz: those regenerating after fires in 1939 and following disturbance between 1960 and 1990). In these forests, a very high proportion of large old trees were either in the most advanced state of tree decay (form 8) or had collapsed (form 9). This is a major concern given that 98.8% of the Mountain Ash forest ecosystem supports forest belonging to these (or even younger) age cohorts. Our investigation highlights the need for forest management to: (1) increase levels of protection for all existing large old hollow-bearing trees, (2) expand the protection of existing regrowth forest so there is the potential to significantly expand the currently very limited areas of remaining old growth forest. |
英文关键词 | Hollow-bearing tree Snag Fire Ash-type eucalypt forests Tree fall Tree mortality |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449137300026 |
WOS关键词 | MOUNTAIN ASH FORESTS ; DOUGLAS-FIR FORESTS ; ARBOREAL MARSUPIALS ; SCATTERED TREES ; ECOSYSTEMS ; AUSTRALIA ; DROUGHT ; MODELS ; RESOURCES ; ABUNDANCE |
WOS类目 | Forestry |
WOS研究方向 | Forestry |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23347 |
专题 | 气候变化 |
作者单位 | 1.Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT 2601, Australia; 2.Australian Natl Univ, Fenner Sch Environm & Soc, Natl Environm Sci Program, Threatened Species Recovery Hub, Canberra, ACT 2601, Australia |
推荐引用方式 GB/T 7714 | Lindenmayer, David B.,Blanchard, Wade,Blair, David,et al. The road to oblivion - Quantifying pathways in the decline of large old trees[J]. FOREST ECOLOGY AND MANAGEMENT,2018,430:259-264. |
APA | Lindenmayer, David B.,Blanchard, Wade,Blair, David,&McBurney, Lachlan.(2018).The road to oblivion - Quantifying pathways in the decline of large old trees.FOREST ECOLOGY AND MANAGEMENT,430,259-264. |
MLA | Lindenmayer, David B.,et al."The road to oblivion - Quantifying pathways in the decline of large old trees".FOREST ECOLOGY AND MANAGEMENT 430(2018):259-264. |
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