Operationalizing the biodiversity Global Review to strengthen CBD effectiveness: priorities for COP17 and beyond

The adoption of the Global Biodiversity Framework (GBF) under the UN Convention on Biological Diversity during COP15 in 2022 marked an important milestone for international biodiversity governance. Parties collectively agreed on a comprehensive set of global goals for 2050 and action targets for 2030 to halt and reverse biodiversity loss. Yet agreeing on ambition is only the first step. It remains uncertain whether this ambition will translate into effective national implementation, sufficient resources allocated to biodiversity improvement, and desired outcomes and impacts. It is therefore important that Parties, as part of the GBF, also agreed to a ‘transparency and responsibility’ mechanism to monitor, report and review collective progress. The question for the CBD Global Review is how implementation is progressing, and how the international community should respond if it is not on track. Despite the mandate for the review adopted by COP16, in practice there is still a lack of clarity on how the Global Review will be organized, how different inputs will be combined, and above all how political follow up will be organized around its findings.

Against this backdrop, this joint study by IDDRI and PBL seeks to contribute to ongoing discussions among Parties and stakeholders on what an effective Global Review mechanism could look like, and how it could work in practice to realize its full potential. This paper approaches the global review as a core element of international environmental governance, with potentially important implications for long-term international cooperation. 

The objectives of the paper are threefold: (1) articulate a positive long-term vision of what the Global Review could become and the benefits it could offer to Parties and stakeholders if designed in a meaningful process; (2) propose a set of short and medium-term options to make this vision and role as operational as possible, including choices related to process, formats and follow-up; (3) explore the role the review could play in enhancing national and international implementation while also preparing the ground for the post-2030 framework. 

They key messages of the report are as follows: 

  1. The Global Review is not merely a technical reporting exercise, but a mechanism aimed at assessing whether the GBF is delivering tangible outcomes towards agreed action targets and long-term goals and identifying the enablers to be implemented and the obstacles to be overcome. As such, it should be conceived as a multi-stakeholder, evidence-based and outcome-oriented process, and a key lever for strengthening the effectiveness of the CBD, grounded in national implementation realities and built through a bottom-up and inclusive approach.
  2. The first Global Review will benefit from over 120 national reports provided by Parties as an important evidence base for the global report, complemented by additional sources provided by stakeholders. This provides a strong foundation for stocktake. However, important methodological and data limitations remain and need to be acknowledged transparently. These limitations highlight both the complexity of assessing progress and the need to strengthen the CBD’s monitoring and review over time.
  3. COP17 will be key to translate the diagnosis into momentum and levers for transformation. Even as a first exercise, its findings can help identifying barriers to GBF implementation and informing prioritization of where support and reforms are most needed. Parties and stakeholders should seek to highlight these levers while avoiding two risks: formulating overly general findings that would fail to support action, and explicit attribution of roles and responsibilities which may lead to political deadlocks.
  4. Dedicated dialogues ahead of and at COP17 (across levels, sectors or thematic priorities) will be essential to clarify expected outputs and the results they should trigger post-COP17. This should be complemented by clear stages of high-level engagement from decision-makers, to translate findings into political signals, coordinated action and follow-up within CBD and beyond.
  5. The Global Review should be seen as part of a longer-term cycle. As such, it should evolve into a permanent mechanism for collective responsibility and accountability mechanism. For this to materialize, the first iteration at COP17 must already demonstrate its ability to inform action and cooperation.

This paper is intended as a contribution to collective reflection by Parties and stakeholders. It does not aim to provide definitive answers but puts forward recommendations and analytical insights to inform current and future discussions and negotiations.

Authors

PBL Authors
Marcel Kok Roos Immerzeel
Other authors
Juliette Landry
Agnès Hallosserie
Mariam Fofana

Specifications

Publication title
Operationalizing the biodiversity Global Review to strengthen CBD effectiveness: priorities for COP17 and beyond
Publication date
23 April 2026
Publication type
Publication
Publication language
English
Product number
6190