BACKGROUND Biodiversity offsets are conservation projects used mainly by business to counterbalance the environmental impacts of their operations, with the aim of achieving a net neutral or even beneficial outcome for biodiversity. Companies considering offsets need to know: (1) if there are areas of such biological importance that no impact is acceptable, and outside of these no-go areas, (2) the relative importance of biodiversity in the impacted site versus the site(s) proposed for protection, to ensure that the offset is of equal or greater status than that lost through the company's operations. We compiled a database of 40 schemes that use various methods to assess conservation priorities, and we examined if the schemes would allow companies to answer the above questions. DESCRIPTION Overall, schemes tend to be designed to guide conservation organizations in their own priority setting or they categorize species based on conservation status. Generally, the schemes do not provide all the necessary information for offsets because they operate at a broad spatial scale or with low spatial resolution, which make it difficult to assess sites at the project level. Furthermore, most schemes do not explicitly incorporate threat, which we consider key to assessing whether offsets protect habitats or species that would otherwise be lost (i.e., provide additionality). The schemes are useful, however, for identifying the major conservation issues in different ecosystems around the globe. CONCLUSION Companies can proceed by first avoiding, reducing, and mitigating impacts, and then using existing schemes to identify i) no-go areas and ii) appropriate offsets to compensate for any unavoidable loss in biodiversity. If existing schemes are inadequate, then companies should use integrated conservation planning techniques to define offset options within the region of their operations.

中文翻译：

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根据保护价值对地点和物种进行优先排序的计划数据库：将业务重点放在生物多样性上。

背景生物多样性补偿是保护项目，主要由企业用来抵消其运营对环境的影响，目的是为生物多样性实现净中性甚至有益的结果。考虑抵消的公司需要知道：(1) 是否存在不可接受任何影响的生物重要性区域，以及在这些禁区之外，(2) 受影响地点与地点的生物多样性的相对重要性) 提议进行保护，以确保抵消的地位等于或大于公司运营损失的地位。我们编制了一个包含 40 个使用各种方法来评估保护优先级的计划的数据库，并检查了这些计划是否允许公司回答上述问题。描述 总体而言，计划往往旨在指导保护组织确定他们自己的优先事项，或者根据保护状况对物种进行分类。通常，这些方案不提供所有必要的偏移信息，因为它们在广泛的空间尺度或低空间分辨率下运行，这使得难以在项目级别评估站点。此外，大多数计划并未明确纳入威胁，我们认为这是评估补偿是否保护否则将丢失的栖息地或物种（即提供额外性）的关键。然而，这些计划对于确定全球不同生态系统中的主要保护问题很有用。结论 公司可以首先避免、减少和减轻影响，然后使用现有计划确定 i) 禁区和 ii) 适当的补偿，以补偿任何不可避免的生物多样性损失。如果现有计划不充分，那么公司应使用综合保护规划技术来定义其运营区域内的抵消方案。