Marine aquaculture：練習問題

What is a primary requirement for the long-term success of a marine aquaculture project regarding the location of the facility?

A successful marine aquaculture project requires a high efficiency of use of feed. Why is this factor important for both economic and environmental reasons?

Consider the efficiency of use of feed in aquaculture. If a farmer switches from a feed with an FCR of 2.0 to a higher quality feed with an FCR of 1.5, what is the most significant environmental benefit?

Which of the following is a characteristic of intensive aquaculture systems, such as those used for Atlantic salmon?

How can the escape of cultured stock from an aquaculture facility negatively impact native wild populations?

Contrast the stocking density typically used in intensive salmon farming with that found in the extensive culture of marine mussels.

An aquaculture firm reports a Feed Conversion Ratio (FCR) of \(1.2\) for their intensive salmon farm. Calculate the total mass of feed required to produce \(5000\) kg of salmon and suggest why a lower FCR is economically preferable.

Discuss the ecological consequences of the overexploitation of feedstocks from wild fisheries to produce fishmeal for carnivorous aquaculture species like Atlantic salmon.

(a) State whether the aquaculture of the blue mussel (Mytilus edulis) is usually classified as an intensive or extensive system. [1]

(b) Describe the process of collecting stock for a mussel farm, with reference to the term spat. [2]

(c) State one reason why the availability of clean water is essential for the successful culture of mussels. [1]

(a) Explain how pollution from an intensive aquaculture facility can lead to the formation of anaerobic conditions in the benthos. [2]

(b) Discuss how the spread of disease is facilitated by high stocking densities in marine aquaculture. [3]