Biology — Chart: Energy by Trophic Level

{
  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "description": "Energy at each trophic level",
  "data": {"values": [
    {"level": "Producers", "energy": 10000},
    {"level": "Primary", "energy": 1000},
    {"level": "Secondary", "energy": 100},
    {"level": "Tertiary", "energy": 10}
  ]},
  "mark": "bar",
  "encoding": {
    "x": {"field": "level", "type": "nominal", "sort": null, "title": "Trophic level"},
    "y": {"field": "energy", "type": "quantitative", "scale": {"type": "log"}, "title": "energy (kJ/m2/yr, log)"},
    "color": {"field": "level", "type": "nominal", "legend": null}
  }
}