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Table 4 Factors included in the risk index of native edible plant species interchanged

From: Influence of traditional markets on plant management in the Tehuacán Valley

Indicator Variables Least risk Most risk Values range (minimum to maximum)
Ecological factors Spatial distribution* Wide distribution Restricted distribution 98 plot sites to 1 plot
Temporal distribution* Many months One month 12 months to 1 month
Used Part Used Index (as Pieroni 2001) Flowers and bud harvest Whole aerial plant used 1.0 (as bark) to 3.0 (as whole aerial parts)
Life cycle Perennial Annual Least intensive used (perennial 1), most harvesting (annual 2)
Socioeconomic factors Number of markets 1 market 6 markets 1 to 6 markets
Number of stalls One stall Many stalls 1 to 9
Average price* Lowest price (calculated per 1 kg) Highest price (calculated per 1 kg) $1.90 to $308.5
Sales Volume Low High 0.19 kg to 661.90 kg
Interchanged ways* Many methods of interchange Just with money 2 (interchanged by barter and money), 1 (interchanged just with money).
Management factors Ecological Status* Domesticated Wild Domesticated (3), Weed or ruderal (2), wild (1)
  Management types* Cultivated Gathered (Foraged) Cultivated (5) Protected (4), Promoted (3), Tolerated (2), Gathered (1)
  Management Systems* Intensive System Natural Vegetation Intensive system (5), Homegardens (4), Agroforestal System (3), Secundary Vegetation (2), wild vegetation (1)
  Number of Uses* More uses Less Uses  
  1. For management factors were recategorized and were considered as another variable because some plant species had more than one value in this category. Values were summed in the recategorized variables.