The importance of residual ecological legacies for extinction debts in managed forests
剩余生态遗产对于管理森林灭绝债务的重要性
基本信息
- 批准号:RGPIN-2015-03826
- 负责人:
- 金额:$ 1.53万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2016
- 资助国家:加拿大
- 起止时间:2016-01-01 至 2017-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Habitat loss is the principal cause of species loss in boreal forests and many other ecosystems. However, recent theoretical advances suggest these impacts may be greatly underestimated and species loss may continue far into the future through a process called extinction debt. Despite this dire prediction, there are few empirical examples of extinction debt that provide the information necessary to predict when and which species will go extinct. As a consequence, it is unclear whether extinction debts will translate into long-term losses in ecosystem functions (‘functional debt’) and what kinds of conservation or restoration efforts could limit or reverse these losses.
Here, I present an integrated research program that will determine the likelihood, extent and duration of extinction debts following large-scale removal of deadwood by intensive harvesting and biomass removal in boreal forests. Through this research program I will train more than 12 HQPs. I will also provide a conceptually and experimentally unique approach based on direct measurement of colonization-extinction dynamics of deadwood-associated insects and fungi in individual deadwood habitats and across replicated, increasingly impacted landscapes. I will capitalize on three ongoing experiments where habitat loss occurred at different times thus providing a chronosequence of landscapes that spans 15 years and where the effects of extinction debt can be measured directly. I will then use empirical estimates of colonization-extinction dynamics to parametrize extinction debt models and evaluate the risks of long-term species loss under a large number of realistic, management scenarios. By focusing on communities and food webs in deadwood and their role in decomposition and carbon storage, I will further extend any long-term impacts of extinction debt to larger ecosystem impacts related to a functional debt.
This framework presents a novel means to integrate conservation and restoration ecology through explicit consideration of colonization-extinction dynamics. With this information we can ‘customize’ mitigation strategies that favour specific types of deadwood depending on the condition of the larger landscape. I also provide a means to unify deadwood management with notions of ecological resilience. This information is essential for land-managers, conservation stakeholders and policy makers who are currently planning guidelines and binding legislation for intensive biomass removal based on limited (if any) ecological information.
生境丧失是北方森林和许多其他生态系统物种丧失的主要原因。然而,最近的理论进展表明,这些影响可能被大大低估,物种损失可能会通过一个称为灭绝债务的过程持续到未来很久。尽管有这样可怕的预测,但很少有灭绝债务的经验性例子提供了预测何时以及哪些物种将灭绝的必要信息。因此,目前尚不清楚灭绝债务是否会转化为生态系统功能的长期损失(“功能债务”),以及何种保护或恢复努力可以限制或扭转这些损失。
在这里,我提出了一个综合的研究计划,将确定的可能性,范围和灭绝债务的持续时间后,大规模的密集采伐和生物量去除在北方森林的枯枝落叶。通过这项研究计划,我将培训超过12名HQP。我还将提供一种概念上和实验上独特的方法,该方法基于直接测量单个枯枝栖息地以及复制的、受影响日益严重的景观中枯枝相关昆虫和真菌的定殖灭绝动态。我将利用三个正在进行的实验,栖息地的丧失发生在不同的时间,从而提供了一个时间序列的景观,跨越15年,灭绝债务的影响可以直接测量。然后,我将使用殖民灭绝动力学的经验估计参数化灭绝债务模型,并评估大量现实的管理方案下的长期物种损失的风险。通过关注枯木中的社区和食物网及其在分解和碳储存中的作用,我将进一步将灭绝债务的长期影响扩展到与功能债务相关的更大的生态系统影响。
该框架提出了一种新的手段,通过明确考虑殖民灭绝动态整合保护和恢复生态学。有了这些信息,我们可以“定制”缓解策略,有利于特定类型的枯木取决于更大的景观条件。我还提供了一种手段,以统一枯枝落叶管理与生态恢复力的概念。这一信息对于土地管理者、养护利益攸关方和决策者至关重要,他们目前正在根据有限的(如果有的话)生态信息规划密集生物量清除的准则和具有约束力的立法。
项目成果
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Work, Timothy其他文献
Design for ground beetle abundance and diversity sampling within the National Ecological Observatory Network
- DOI:
10.1002/ecs2.1744 - 发表时间:
2017-04-01 - 期刊:
- 影响因子:2.7
- 作者:
Hoekman, David;LeVan, Katherine E.;Work, Timothy - 通讯作者:
Work, Timothy
Uneven-aged silviculture can enhance within stand heterogeneity and beetle diversity
- DOI:
10.1016/j.jenvman.2017.09.054 - 发表时间:
2018-01-01 - 期刊:
- 影响因子:8.7
- 作者:
Joelsson, Klara;Hjalten, Joakim;Work, Timothy - 通讯作者:
Work, Timothy
Paludification of boreal soils reduces wood decomposition rates and increases wood-based carbon storage
- DOI:
10.1890/es14-00063.1 - 发表时间:
2015-12-01 - 期刊:
- 影响因子:2.7
- 作者:
Jacobs, Jenna;Work, Timothy;Bergeron, Yves - 通讯作者:
Bergeron, Yves
Work, Timothy的其他文献
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{{ truncateString('Work, Timothy', 18)}}的其他基金
Maintaining biodiversity in managed forests in the face of multiple ecosystem stressors
面对多种生态系统压力,维持管理森林的生物多样性
- 批准号:
RGPIN-2020-06494 - 财政年份:2022
- 资助金额:
$ 1.53万 - 项目类别:
Discovery Grants Program - Individual
Evaluating conservation value and insect biodiversity within the Ya'nienhonhndeh territory of the Huron-Wendat Nation
评估休伦-温达特民族 Yanienhonhndeh 境内的保护价值和昆虫生物多样性
- 批准号:
561104-2020 - 财政年份:2021
- 资助金额:
$ 1.53万 - 项目类别:
Alliance Grants
Maintaining biodiversity in managed forests in the face of multiple ecosystem stressors
面对多种生态系统压力,维持管理森林的生物多样性
- 批准号:
RGPIN-2020-06494 - 财政年份:2021
- 资助金额:
$ 1.53万 - 项目类别:
Discovery Grants Program - Individual
Risks of introduction and damage from forest insect pests in the boreal forest
北方森林森林害虫传入和危害的风险
- 批准号:
560575-2020 - 财政年份:2021
- 资助金额:
$ 1.53万 - 项目类别:
Alliance Grants
Maintaining biodiversity in managed forests in the face of multiple ecosystem stressors
面对多种生态系统压力,维持管理森林的生物多样性
- 批准号:
RGPIN-2020-06494 - 财政年份:2020
- 资助金额:
$ 1.53万 - 项目类别:
Discovery Grants Program - Individual
Evaluating conservation value and insect biodiversity within the Ya'nienhonhndeh territory of the Huron-Wendat Nation
评估休伦-温达特民族 Yanienhonhndeh 境内的保护价值和昆虫生物多样性
- 批准号:
561104-2020 - 财政年份:2020
- 资助金额:
$ 1.53万 - 项目类别:
Alliance Grants
The importance of residual ecological legacies for extinction debts in managed forests
剩余生态遗产对于管理森林灭绝债务的重要性
- 批准号:
RGPIN-2015-03826 - 财政年份:2019
- 资助金额:
$ 1.53万 - 项目类别:
Discovery Grants Program - Individual
The importance of residual ecological legacies for extinction debts in managed forests
剩余生态遗产对于管理森林灭绝债务的重要性
- 批准号:
RGPIN-2015-03826 - 财政年份:2018
- 资助金额:
$ 1.53万 - 项目类别:
Discovery Grants Program - Individual
Long-term impacts of partial cutting and clearcutting on beetle biodiversity in the Haute-Mauricie region of Quebec
部分砍伐和皆伐对魁北克上莫里西地区甲虫生物多样性的长期影响
- 批准号:
533196-2018 - 财政年份:2018
- 资助金额:
$ 1.53万 - 项目类别:
Engage Grants Program
The importance of residual ecological legacies for extinction debts in managed forests
剩余生态遗产对于管理森林灭绝债务的重要性
- 批准号:
RGPIN-2015-03826 - 财政年份:2017
- 资助金额:
$ 1.53万 - 项目类别:
Discovery Grants Program - Individual
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