Coastal Zone Management Questions and Answers

Answer: A

The first two are correct and are the essence of the approach. The third describes exactly what pathway planning is designed to avoid. Decision points replace a single fixed commitment. Triggers are monitored to signal when to act.

Answer: B

Correct answer: is worthwhile under every plausible future scenario

A no regrets measure pays for itself whether the sea rises fast or slowly - improving monitoring, keeping defence assets in good condition, restricting new development in the erosion zone, restoring dunes. Its merit is that it does not require the future to be predicted correctly. It is not costless, not reversible, and certainly not a guarantee against flooding.

Answer: C

A large fixed structure is expensive and forecloses later options. The other three are worthwhile whatever the future actually turns out to be. A large fixed structure is the opposite case. No regrets measures cost little and foreclose nothing.

Answer: D

Trends cannot be distinguished from fluctuations without a long record. Regional monitoring programmes exist in many countries for exactly this reason. Interannual variability is large on any coast. Consistent methods make the records comparable.

Answer: A

Correct answer: Both A and R are true, and R is the correct explanation of A

Both are true and the reason gives the benefit. Beach profiles, aerial surveys and wave records collected to a common specification across a whole cell can be compared directly between frontages and combined into a picture of the sediment budget - which is impossible where each authority measures differently, at different times, to different datums. The shared cost of one programme is also far below the sum of many small ones.

Answer: B

Correct answer: 1 and 2 only

Statements 1 and 2 are correct: a decade or more is needed before a trend emerges from storm and seasonal variation, and consistent methods are what make frontages comparable. Statement 3 is exactly the error that long records exist to prevent - a single year’s change may be an unusually stormy winter, and acting on it as a trend has led to a great deal of unnecessary defence.

Answer: C

The habitat cannot migrate landward and narrows until it disappears. Its loss also removes the wave attenuation that the defence itself was relying on. Squeeze therefore harms the defence as well. Habitat and engineering interests coincide here.

Answer: D

Correct answer: True

Coastal squeeze occurs where an intertidal habitat is caught between a rising sea and a fixed defence and is progressively lost. Since the habitat is generally designated, the loss must be compensated, and the usual means is managed realignment - breaching a defence to let the sea into land behind it, where new intertidal habitat forms. Compensation of this kind is now a substantial part of the case for many realignment schemes.

Answer: A

Those who lose land bear a concentrated cost while the benefits are diffuse. Compensation and early engagement are the usual means of addressing it. Concentrated losses are politically difficult. Diffuse benefits generate no comparable support.

Answer: B

Correct answer: Both A and R are true, and R is the correct explanation of A

Both are true and the reason gives the political shape of the problem. The land to be given up belongs to identifiable people who will lose it, while the benefits - reduced defence cost, new habitat, flood storage - are spread across a whole community or a whole nation. Concentrated losses and diffuse gains produce determined opposition and weak support, which is why compensation and early engagement matter more here than technical merit does.