Question

question 27
select all the possible direct negative outcomes of fishery collapse
a. decreased biodiversity
b. increase in greenhouse gas emissions
c. inbreeding depression
d. negative impact on economy
e. overgrazing

Explanation:

• Decreased biodiversity: Fishery collapse reduces fish species numbers and populations, directly lowering aquatic biodiversity.
• Increase in greenhouse gas emissions: When fish populations collapse, nutrient cycling in water is disrupted, and organic matter decomposition releases more greenhouse gases like methane and carbon dioxide.
• Inbreeding depression: With a drastically reduced fish population, remaining individuals are forced to breed with close relatives, leading to inbreeding depression (reduced genetic fitness).
• Negative impact on economy: Fisheries support livelihoods, food systems, and industries; collapse directly harms fishing communities, seafood markets, and related economic sectors.
• Overgrazing: This is a land-based issue related to herbivores and vegetation, not a direct outcome of fishery collapse.

Answer:

A. Decreased biodiversity
B. Increase in greenhouse gas emissions
C. Inbreeding depression
D. Negative impact on economy