Tier 1/Tier 2

{
  "id": "MLC-T-ENV-028104",
  "term": "Tier 1/Tier 2",
  "field": "Environment",
  "definition": "The EMAP design is a multi-stage, or multiphase, design. These two terms describe the multi-stage structure of EMAP's monitoring activities. Tier 1 refers to studies that reflect the structure of the sampling grid, and these studies characterize the extent of the resource and its geographical distribution. Tier 2 refers to a double sample from a Tier 1 sample; these studies quantify the ecological condition on a national or regional basis.",
  "subject": "Science and research",
  "references": [
    "Environmental Modeling and Assessment Program (EMAP) Master Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/tier-1-tier-2/"
}