5. Fisheries Science
Fishing Impacts — Quiz
Test your understanding of fishing impacts with 5 practice questions.
Practice Questions
Question 1
What is the primary ecological impact of scallop dredging on filter‐feeding bivalve populations?
Question 2
Which trophic level is most immediately affected by habitat removal from bottom trawling?
Question 3
What term describes the phenomenon where each generation of fishers accepts a progressively lower stock abundance as the norm?
Question 4
A pelagic longline sets 10\,000 hooks and has a seabird bycatch rate of 0.05 birds per 100 hooks. How many seabirds are caught, and how many are saved if streamer lines reduce bycatch by 70\%?
Question 5
In a no‐take marine reserve, fish biomass follows $B(t)=B_0e^{rt}$. Given $r=0.2\,\mathrm{yr}^{-1}$, how many years until biomass doubles?