Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1365-2699.2012.02714.x |
Fire persistence traits can be used to predict vegetation response to changing fire regimes at expansive landscape scales - an Australian example | |
Russell-Smith, Jeremy1,2; Gardener, Mark R.2,3; Brock, Chris4; Brennan, Kym5; Yates, Cameron P.1; Grace, Blair | |
通讯作者 | Russell-Smith, Jeremy |
来源期刊 | JOURNAL OF BIOGEOGRAPHY
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ISSN | 0305-0270 |
出版年 | 2012 |
卷号 | 39期号:9页码:1657-1668 |
英文摘要 | Aim Building on a substantial literature addressing the fire responses of woody plants, particularly under mediterranean climates, we assess the extent to which fire persistence traits can be used to predict vegetation responses to fire regime changes in fire-prone arid and savanna landscape settings. Location Australia, applying data from arid central to monsoonal northern regions (1126 degrees S, 129138 degrees E). Methods With reference to a substantial sub-continental floristics dataset, we first assigned the fire response (obligate seeder, resprouter) and seedbank persistence (transient, dormant) of rapid and longer-maturing (> 3 years) woody taxa. Using logistic regression, we then modelled the proportions of taxa possessing these traits as a function of mean annual rainfall (highly correlated with fire frequency) and terrain roughness (a measure of topographic variability) in 0.25 degrees x 0.25 degrees and 1 degrees x 1 degrees grid cells. Separate assessments were undertaken with datasets for 1264 sclerophyll and 236 rain forest taxa. Results This woody flora is characterized by taxa exhibiting mostly resprouting and dormant seedbank traits that promote site persistence. While numbers of obligate seeder and resprouter taxa were related positively to both rainfall and roughness, the relative abundance of both sclerophyll and rain forest obligate seeders decreased significantly with rainfall. The relative abundance of sclerophyll (especially long-lived) obligate seeders alone increased with topographic roughness. The proportion of taxa with transient seedbanks increased with rainfall in resprouters generally, and in rain forest obligate seeders alone. Main conclusions We find that resprouters are favoured on more productive, fire-prone sites, and obligate seeders are favoured in less productive, more fire-protected settings. Seedbank persistence responses are more variable. These findings concur generally with theoretical constructs, and support comparable assessments in Australian and other fire-prone systems ranging from mediterranean to boreal environments. Our observations illustrate that resprouting and obligate seeding syndromes, but not necessarily seedbank persistence, are useful predictors of vegetation responses to changing fire regime conditions at large landscape scales. |
英文关键词 | Australia fire frequency obligate seeder productivity gradient rain forest resprouter savanna seedbank terrain roughness |
类型 | Article |
语种 | 英语 |
国家 | Australia ; Ecuador |
收录类别 | SCI-E |
WOS记录号 | WOS:000307562200010 |
WOS关键词 | MONSOON RAIN-FOREST ; NORTHERN AUSTRALIA ; SENSITIVE VEGETATION ; PLANT-COMMUNITIES ; SPROUTING ABILITY ; CROWN-FIRE ; SEED BANK ; REGENERATION ; PATTERNS ; TERRITORY |
WOS类目 | Ecology ; Geography, Physical |
WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/173369 |
作者单位 | 1.Bushfires NT, Winnellie, NA 0821, Australia; 2.Charles Darwin Univ, Res Inst Environm & Livelihoods, Darwin, NT 0909, Australia; 3.Charles Darwin Fdn, Puerto Ayora, Galapagos Islan, Ecuador; 4.Dept Nat Resources Environm Arts & Sport NRETAS, Alice Springs, NT, Australia; 5.NRETAS, Palmerston, NT, Australia |
推荐引用方式 GB/T 7714 | Russell-Smith, Jeremy,Gardener, Mark R.,Brock, Chris,et al. Fire persistence traits can be used to predict vegetation response to changing fire regimes at expansive landscape scales - an Australian example[J],2012,39(9):1657-1668. |
APA | Russell-Smith, Jeremy,Gardener, Mark R.,Brock, Chris,Brennan, Kym,Yates, Cameron P.,&Grace, Blair.(2012).Fire persistence traits can be used to predict vegetation response to changing fire regimes at expansive landscape scales - an Australian example.JOURNAL OF BIOGEOGRAPHY,39(9),1657-1668. |
MLA | Russell-Smith, Jeremy,et al."Fire persistence traits can be used to predict vegetation response to changing fire regimes at expansive landscape scales - an Australian example".JOURNAL OF BIOGEOGRAPHY 39.9(2012):1657-1668. |
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