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
• 负责人: Work, Timothy
• 金额: $ 1.82万
• 依托单位: Université du Québec à Montréal
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=668903
• 关键词: Long; term; impacts; partial; cutting

Partial cutting has been widely advocated as a means to maintain biodiversity, satisfy environmental**certification like FSC (Forest Stewardship Council) and assure sustainable wood production. Initial studies that**compared biodiversity impacts partial cutting and shelterwood harvests to clearcuts have shown that leaving**more retention often benefits biodiversity. However, it remains to be demonstrated whether any negative**effects of cutting persist in stands once forest canopies have re-established (>20 years post-harvest) and**whether stands originating from uneven-aged silviculture (partial cuts) or even-aged silviculture (clearcuts) are**more resilient over the long-term. This project is a new collaboration with Groupe REMABEC, a long-time**member of the forest industry in Canada with a strong environmental commitment, where we will compare**beetle biodiversity between replicated stands that have 1) regenerated following older partial cuts (1995) with a**subsequent recent second pass (2015), 2) regenerated after older single-pass partial cuts (1995), 3) regenerated**from older clearcuts (1995) 4) recent clearcuts (2015) and 5) uncut control stands. We will identify ground**beetles and saproxylic beetles sampled with pitfall and flight intercept traps to species and compare**assemblages using a combination of generalized linear mixed models and multivariate regression trees. As an**initial working hypothesis, we expect beetle assemblages in stands originating from single-pass partial cuts will**be indistinguishable from uncut forests, whereas beetle assemblages in stands originating from clearcuts or**partial cuts with a second pass harvest will be similar to one another. This project will provide REMABEC**with a high-resolution (>300 species) biodiversity database specific to their operating area which they can then**use to critically evaluate the ecological impacts of current harvesting operations and advance FSC certification**of operations. It can also be used to modify or develop harvesting practices that improve conservation value of**managed stands, cut costs by avoiding silvicultural strategies that are ineffective for maintaining biodiversity.

部分切割已被广泛提倡，以维持生物多样性，满足环境**诸如FSC（森林管理委员会）之类的环境**认证并确保可持续的木材生产。 **比较生物多样性会影响部分切割和庇护所收获的最初研究表明，留下更多的保留率通常会使生物多样性受益。但是，一旦森林檐篷重新建立了（>在收获后20年>> 20年），并且**是否源于不均匀的造林（部分切割）（部分切割）还是均匀的造林（Clearcuts），是否依靠长期，是否有任何负面的影响。该项目是与Groupe Remabec的一项新合作，他是加拿大森林行业的长期成员，具有强烈的环境承诺，我们将比较**在较旧的部分切割（1995年）重新再生的复制摊位之间的**甲虫生物多样性（1995年）与**后来的第二次通过（2015年），较旧的单个PASSER，较旧的单位降级*1995（1995）。 Clearcuts（1995）4）最近的ClearCuts（2015）和5）未切割的控制立场。我们将确定地面**甲虫和墨西甲虫，并用陷阱和飞行截距陷阱采样与物种，并使用广义线性混合模型和多元回归树的组合比较**组合。作为一个最初的工作假设，我们预计源自单通部分切割的看台上的甲虫组合将与未切割的森林没有区别，而甲虫组合的甲虫组合是源自清晰切割或以第二次通过的方式造成的，彼此相似。该项目将为Remabec **提供针对其操作区域的高分辨率（> 300种）生物多样性数据库，然后他们可以**批判性地评估当前收获操作的生态影响和进步的FSC认证**。它还可以用来修改或开发收获实践，以提高**管理摊位的保护价值，通过避免造成生物多样性无效的造林策略来降低成本。