利用基于性状的黑暗多样性方法评估森林的自然恢复潜力

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY Restoration Ecology Pub Date : 2024-08-14 DOI:10.1111/rec.14251
Élise Deschênes, Kierann R. Santala, Jonathan Lavigne, Isabelle Aubin
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引用次数: 0

摘要

利用生态系统的自然恢复潜力对于提高恢复工作的规模和效率至关重要。然而,这种潜力目前在恢复生态学中利用不足,人们对自然物种招募的障碍仍然知之甚少。在本研究中,我们建立了一个分析框架,将基于性状的方法与暗多样性方法相结合,以评估受冶炼厂影响的森林中林下植物群落的恢复情况,并确定限制缺失物种恢复的因素。在加拿大安大略省萨德伯里的 18 个受冶炼厂影响的自然恢复森林和 3 个参考森林中计算了群落完整性指数 (CCI)。CCI 用于识别偏离目标群落最大的地点,并与传统使用的植物恢复指标进行比较。比较了观察到的物种和暗多样性物种的群落加权平均值(CWM)性状,并使用主成分分析确定研究地点间观察到的物种和缺失物种的性状之间的关系。无法被动恢复的物种(即暗多样性概率高的物种)通常植株高大和/或种子大。林下植物群落的恢复是沿着植物经济性和大小这两个功能梯度进行的,这两个梯度都与冶炼厂的距离相吻合。暗色多样性和性状分析有助于确定自然恢复的障碍,从而为有针对性的恢复行动提供指导。最后,我们讨论了暗色多样性方法在恢复过程中的局限性和机遇,强调了仔细定义特定生境物种库和批判性评估暗色多样性概率的生态意义的重要性。
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Using a trait‐based dark diversity approach to evaluate natural recovery potential in forests
Utilizing ecosystems' natural recovery potential is crucial for enhancing the scale and efficacy of restoration efforts. However, this potential is currently underutilized in restoration ecology, and barriers to natural species recruitment remain poorly understood. In this study, we develop an analytical framework that combines trait‐based and dark diversity approaches to evaluate understory plant community recovery in smelter‐impacted forests and identify factors limiting recovery for absent species. A community completeness index (CCI) was calculated in 18 naturally recovering smelter‐impacted forests and three reference forests in Sudbury, Ontario, Canada. The CCI was used to identify sites that deviate the most from their target communities and was compared to traditionally used indicators of plant recovery. Community weighted means (CWM) of traits for observed and dark diversity species were compared, and principal components analysis was used to identify relationships between traits of observed and missing species among study sites. Species unable to recover passively (i.e. with high dark diversity probabilities) were generally tall and/or large seeded. Understory plant community recovery was structured along two functional gradients, plant economics and size, which both coincided with distance to the smelter. Dark diversity and trait analyses were useful for identifying barriers to natural recovery and, therefore, providing guidance on targeted restoration actions. We conclude by discussing the limitations and opportunities of the dark diversity approach in a restoration context, highlighting the importance of carefully defining habitat‐specific species pools and critically assessing the ecological significance of dark diversity probabilities.
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来源期刊
Restoration Ecology
Restoration Ecology 环境科学-生态学
CiteScore
6.50
自引率
15.60%
发文量
226
审稿时长
12-24 weeks
期刊介绍: Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.
期刊最新文献
How does restoration ecology consider climate change uncertainties in forested ecosystems? Does decline and recovery process affect clonal and genetic diversity of a coastal plant population? Salt tolerance of native trees relevant to the restoration of degraded landscapes in the Monte region, Argentina Frequency of association: a key indicator for assessing livestock grazing effects on dryland plant interactions, applicable in restoration Low retention of restocked laboratory‐reared long‐spined sea urchins Diadema antillarum due to Spanish hogfish Bodianus rufus predation
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