Table 2.

Summary of all calculations used in quantitative assessment of impacts on food security and land use

Equation 1. Current levels of wild meat consumption
Total annual wild meat consumption per country per annum (W)	=	Equation	Daily protein (g) per person per day from game meat (WPPPD)	X	National population estimate	X	365.25
		Data source	GENuS database 7		UN 2019 population estimates82		Days per year

Equation 2. Hypothetical protein consumption if under worst-case food insecurity scenario
Hypothetical protein deficit if wild meat is removed without alternatives (Premoval)	=	Equation	Total protein intake per person per day from all foods (Pcurrent)	-	WPPPD
		Data source	GENuS database (Smith, 2016)		GENuS database 7

Equation 3. Hypothetical land demand under worst-case land use change scenario
Hypothetical land use change (km2) if all wild meat protein is replaced with animal agriculture (Ldemand)	=	Equation	W	X	$$\left(\begin{array}{lll}\text{Pasture}\text{demand}\text{per}\text{unit}\text{of}\text{meat}\text{replacement}\hfill & \hfill & \text{Cropland}\text{demand}\text{per}\text{unit}\text{of}\text{meat}\text{replacement}\hfill \\ \sum _{i-1}^{n}Lpas\hfill & +\hfill & \sum _{i-1}^{n}Lcro{p}_i\hfill \end{array}\right)$$
		Data source	Equation 1		Where i is the different livestock sectors within a country (beef, sheep/goat, pork, poultry), weighted according to current consumption levels (estimated from Smith (2016)), and L is land needed per sector (km2/kg) based on region-specific estimates of land demand per unit of protein, for pasture (Lpast) and cropland for feed (Lcrop)11

Equation 4. Hypothetical biodiversity loss under worst-case land use change scenario
Hypothetical biodiversity loss (no. species) if all wild meat protein is replaced with animal agriculture (Bloss)	=	Equation	$$\left(\begin{array}{lll}{\text{L}}_{\text{demand}}\left(\text{pasture}\right)\hfill & \text{X}\hfill & \left(\text{Cpast}+\left(10\text{x}\text{Opast}\right)\right)\hfill \end{array}\right)+\left(\begin{array}{lll}{\text{L}}_{\text{demand}}\left(\text{crop}\right)\hfill & \text{X}\hfill & \left(\text{Ccrop}+\left(10\text{x}\text{Opast}\right)\right)\hfill \end{array}\right)$$
		Data	Where Ldemand (pasture) is the land demand component for pasture only and Ldemand (Crop) is the land demand component for crop only (Equation 3). C and O are country-specific “global characterization factors” of the number of species destined for extinction, caused by: C = one-off impact of conversion of natural habitats to pasture (Cpast) and cropland (Ccrop). O = ongoing impact of land occupation (assumed to be 10 years in this study) by pasture (Opast) and cropland (Ocrop)8