本题目来源于试卷: SL/HL Topic D4.2 Stability and change，类别为 IB生物学
[问答题]
7. Fish are a renewab)uppadb,m gf 22 n1+tkmyo:) a a0zeg 9ce.m(9b4g sarle resource for human consumption. Outline how harvesting of fish can be sustainablmzrg(asc a09 4be.eg9e and how sustainability can be assessed.
参考答案: A renewable resource can maintain stable populations despite harvesting if the population has sufficient resources. Sustainability depends on the rate of harvesting being lower than the rate of replacement.
To remain stable a population must have a balanced distribution of genders/ages.
Sustainability can be assessed by monitoring the population size/ age distribution.
Fish populations can be monitored by the capture, mark, release, recapture method
Estimates can be made by monitoring fishing effort and catch size.
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