气候变化领域集成服务门户(CCPortal): Plant traits as indicators of recovery of reclaimed wellsites in forested areas: Slow but directional succession trajectory

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DOI	10.1016/j.foreco.2020.118180
	Plant traits as indicators of recovery of reclaimed wellsites in forested areas: Slow but directional succession trajectory
	Azeria E.T.; Santala K.; McIntosh A.C.S.; Aubin I.
发表日期	2020
ISSN	0378-1127
卷号	468
英文摘要	Trait-based approaches can provide a generalizable mechanistic understanding of complex post-disturbance succession dynamics of plant communities. Much of our knowledge regarding successional trajectories of functional trait composition come from observations of natural disturbances that leave physical and biological legacy on site for self regeneration. We lack, however, understanding of the long-term recovery in severely degraded lands following reclamation through active revegetation. To address this gap, we examined changes in trait composition of forest understory plant communities in reclaimed oil and gas wellsites using chronosequence data (7–48 years since reclamation) to assess recovery towards that of post-harvest and natural post-fire reference forest sites. We used multiple traits associated with resource acquisition (e.g., fast growth) and performance ability metrics (e.g., shade-tolerance) with putative environmental factors to evaluate the trait-environment relationships underlying plant community recovery in reclaimed sites. We found an overall directional change in functional composition with time since reclamation towards that observed in reference sites, but even older reclaimed sites remained significantly different from reference sites. This could be related to differential trajectory patterns among traits where some trait values progressed towards those of reference (long-distance dispersal by wind decreased with time since reclamation) whereas some fast-resource acquisition traits and exotic species showed no change and remained dominant in older reclaimed sites. The strong link between traits and environment suggests a significant influence of time and subsequent developing site conditions (e.g., canopy cover) as well as enduring legacies of wellsite operation/reclamation (e.g., high soil bulk density and exotic species) on functional composition. Knowledge of functional composition trajectories in severely degraded ecosystems, such as wellsites, could improve our understanding of recovery processes and inform more effective reclamation practices by identifying putative underlying environmental factors and specific ecological attributes that may delay successful recovery. © 2020 Elsevier B.V.
英文关键词	Community assembly; Ecological recovery; Environmental filtering; Functional trait; Land reclamation; Post-disturbance succession; Severe disturbance
语种	英语
scopus关键词	Ecology; Natural gas wells; Plants (botany); Reforestation; Revegetation; Soil conservation; Trajectories; Degraded ecosystems; Directional changes; Environmental factors; Functional compositions; Long-distance dispersals; Natural disturbance; Resource acquisition; Trait-based approaches; Reclamation; bioindicator; bulk density; chronosequence; dispersal; environmental disturbance; forested catchment; plant community; reclaimed land; restoration ecology; succession; understory; Ecology; Patterns; Plants; Reclamation; Recovery; Reforestation; Sites; Trajectories
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155248
作者单位	Alberta Biodiversity Monitoring Institute, University of Alberta, Edmonton, AB T6G 2E9, Canada; Natural Resources Canada, Great Lakes Forestry Centre, Sault Ste. MarieON P6A 2E5, Canada; Augustana Campus, University of Alberta, Camrose, Alberta T4V 2R3, Canada
推荐引用方式 GB/T 7714	Azeria E.T.,Santala K.,McIntosh A.C.S.,et al. Plant traits as indicators of recovery of reclaimed wellsites in forested areas: Slow but directional succession trajectory[J],2020,468.
APA	Azeria E.T.,Santala K.,McIntosh A.C.S.,&Aubin I..(2020).Plant traits as indicators of recovery of reclaimed wellsites in forested areas: Slow but directional succession trajectory.Forest Ecology and Management,468.
MLA	Azeria E.T.,et al."Plant traits as indicators of recovery of reclaimed wellsites in forested areas: Slow but directional succession trajectory".Forest Ecology and Management 468(2020).