Key Event Title
|Level of Biological Organization|
Key Event Components
|population growth rate||decreased|
|population growth rate||population of organisms||decreased|
Key Event Overview
AOPs Including This Key Event
|all species||all species||NCBI|
|All life stages||Not Specified|
Key Event Description
Maintenance of sustainable fish and wildlife populations (i.e., adequate to ensure long-term delivery of valued ecosystem services) is an accepted regulatory goal upon which risk assessments and risk management decisions are based.
How It Is Measured or Detected
Population trajectories, either hypothetical or site specific, can be estimated via population modeling based on measurements of vital rates or reasonable surrogates measured in laboratory studies. As an example, Miller and Ankley 2004 used measures of cumulative fecundity from laboratory studies with repeat spawning fish species to predict population-level consequences of continuous exposure.
Domain of Applicability
Consideration of population size and changes in population size over time is potentially relevant to all living organisms.
Regulatory Significance of the Adverse Outcome
Maintenance of sustainable fish and wildlife populations (i.e., adequate to ensure long-term delivery of valued ecosystem services) is a widely accepted regulatory goal upon which risk assessments and risk management decisions are based.
- Miller DH, Ankley GT. 2004. Modeling impacts on populations: fathead minnow (Pimephales promelas) exposure to the endocrine disruptor 17ß-trenbolone as a case study. Ecotoxicology and Environmental Safety 59: 1-9.