> For the complete documentation index, see [llms.txt](https://docs.basin.global/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.basin.global/appendix/ecosystem-services-dependencies-and-risks/by-sector-and-industry.md).
# By Sector & Industry
The following sections delve into the nature-related risks and dependencies across 11 GICS sectors consisting of 157 sub-industries and 150+ economic production processes. As applicable, each sector and industry is cross referenced to SASB and NACE.
Industries are ordered based on the S\&P Ecosystem Footprint, prioritizing sectors by their impact measured in hectares. This metric integrates three critical aspects: the **land area** affected by a company's operations, the **extent of reduction in ecosystem integrity**, and the **importance of the impacted ecosystems**. By amalgamating these factors, it calculates a company's equivalent impact on key global ecosystems in terms of biodiversity conservation and service provision, expressed as the number of hectares of the most significant ecosystems fully degraded.
## GICS Sectors by Ecosystem Footprint