Species and habitats - Chelidonichthys cuculus - Age 1+ - Recurrence, (CGFS 1...

Species habitat occupation has been expressed as rare, occasional, frequent, recurrent depending on density levels and variability over time.物种栖息地占用（species habitat occupation）状况可依据随时间变化的密度水平与波动特性，分为罕见、偶见、常见、频发四类。