跳往主要内容

ASFA

搜索词汇表

内容语言

概念信息

现象 > 生物学现象 > 死亡率 > 自然死亡率

优选术语

创建: 2020-07-03T17:01:17.504+02:00

自然死亡率  

定义

  • Natural mortality is deaths of fish from all causes except fishing (e.g. ageing, predation , cannibalism, disease and perhaps increasingly pollution). It is often expressed as a rate that indicates the percentage of fish dying in a year; for example a natural mortality rate of 0.2 implies that approximately 20% of the population will die in a year from causes other than fishing.

    创建: 7/3/20

    (en)

上位概念

相关概念

其他语言

URI

http://aims.fao.org/aos/agrovoc/c_5e26404e

下载此概念：

RDF/XML TURTLE JSON-LD 创建于 2019/9/4, 最后修改 2020/10/23