Species and habitats - Spondyliosoma cantharus - Age 1+ - Recurrence, (CGFS 1988-2009)
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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）已依据随时间变化的密度水平及其变异性，被划分为罕见型、偶见型、常见型与频发型四类
