Latin America is the second most urbanized region in the world, with 81% of its population concentrated there. This strong urbanization, its rapid growth and the weakness of urban planning policies affect areas of high ecological and environmental value. However, natural ecosystems can be a source of solutions for those involved in urban design and development, in particular to respond to the risks generated or exacerbated by climate change.

Understanding nature-based solutions (NBS), studying their implementation conditions and analyzing their integration into public policies is therefore necessary to ensure the livability of cities in the long term. While NBS and green infrastructure are still recent in the urban landscape, initiatives have been deployed for several years and are a privileged source of data to exploit. 

The ENSLAC (Enabling Nature based solutions Scale-up in Latin American Cities) project aims to analyse the mechanisms that enable the scale-up of nature-based solutions implementation in Latin American cities, drawing on 15 case studies in Peru, Colombia and Ecuador. This research approach aims to: 

• Analyze the challenges of ecological restoration for the management of risks related to the impacts of climate change in urban areas;
• Understand the levers for using NBS as a tool for urban planning and development;
• Identify the temporal, technical, cultural, political, social, financial and cooperative processes that have enabled large-scale NBS-based projects;
• Assess the influence of national or supranational strategies and policies on NBS development;
• Disseminate the knowledge produced by focusing on formats and channels that can be used for the training of urban development actors. 

To explore these issues, Yes Innovation, based in Quito, works with the Humboldt Institute for Biological Resources Research, an institution linked to the Ministry of the Environment of Colombia, and Periferia Territorios Vivos, a Peruvian organization specialized in urban planning with an ecological approach. 

This research project uses two analytical tools (depending on the case study and the available field data):

1. Temporal and spatial analysis (known as BA/CI, which refers to a Before/After and Conservation/Intervention analysis);
2. Comparative analysis between case studies on NBS and reference cases of comparable characteristics but without implementation of NBS. 

The ENSLAC research project aims to: 

• Understand mechanisms that enable scale-up of nature-based solutions as a tool for urban and peri-urban planning;
• Identify replicability levers of these NBS for Latin American cities;
• Produce training materials for urban development actors. 

The research team presented its findings during a webinar from the Research Conversations series. The replay is available below (in French and Spanish).

Today, the majority of leaders acknowledge the degradation of natural capital and the urgent need to protect the environment. Nevertheless, in order to define appropriate public policies, they must be able to rely on scientific standards that allow them to assess the state of a territory’s natural capital.

It remains difficult to assess this state, or even to define exactly what a "good state" of the planet should be: most existing instruments have an incomplete definition of environmental sustainability, lack of relevant indicators or fail to set appropriate targets to achieve good environmental status. There is therefore no satisfactory approach that would allow decision-makers or experts to know whether a country is moving towards environmental sustainability.

Based on a dashboard assessing the state of 23 environmental components, the ESGAP framework aims to address this need. However, the lack of appropriate standards for many essential natural capital contributions and in many countries is one of the most notable gaps identified in the ESGAP pilot projects in New Caledonia, Kenya and Vietnam.

Watch the video: How to measure the state of the planet?

This research project with EcoAct aimed to identify missing standards for several components of the Environmental Sustainability Gap (ESGAP). It discusses possible strategies to develop appropriate standards in the event that no standards are available globally.

ESGAP is an innovative tool initially developed with University College London (UCL) that assesses the state of a territory’s environmental functions and their level of sustainability. For all critical components of natural capital in the territory concerned (air or water quality, pollution, forest resources, fishing resources, etc.), this indicator calculates the difference between their current state and a state that would be sustainable (that is, a state compatible with a sustainable functioning of the processes necessary for the preservation of life, human activities and well-being). This allows the calculation of an “environmental sustainability gap” (ESGAP), which highlights the path to environmental sustainability. This can then serve as a guide for public policies to estimate and preserve the natural state of a given territory.

Standards have been proposed for 16 out of the 22 ESGAP indicators examined in this research project. For 8 indicators, there was not enough solid information to propose a global standard. The study identified 13 datasets available to calculate these indicators globally and provided the source and link to these publicly available databases.

Read the final report: Defining Standards of Good Ecological Condition for Computing the ESGAP in Developing Countries 

The next step to produce a standard of good ecological condition applicable to all countries involves, for indicators with "standards to be defined by experts" (Fairbrass, 2020), to consider who the experts might be and how to engage with them to define a globally applicable standard. This depends on the existence of a globally recognized authority (such as the World Health Organization for pollution or the Food and Agriculture Organization for fisheries), or if the indicator is developed by different teams of scientists or organizations. 

Future work could also focus on examining the state of knowledge and options for setting standards from unconventional sources, such as geospatial data, big earth data, etc. The ARIES project related to the compilation of ecosystem accounts under the System of Environmental-Economic Accounting – Ecosystem Accounting (SEEA-EA) could be an interesting source for this.

Find out more about ESGAP:

• A single indicator of strong sustainability for development: Theoretical basis and practical implementation (2019)
• Monitoring the Environmental Sustainability of Countries through the Strong Environmental Sustainability Index (2022)
• Are We on the Right Path? Measuring Progress towards Environmental Sustainability in European Countries (2022) 

Contact: 

• Oskar Lecuyer, research officer, AFD