QCAA Marine Science Managing fisheries

Incorrect. These terms describe specific marine habitats or environments where fishing takes place, rather than the overarching categories of fisheries.

Incorrect. These are specific types of fishing gear or methods used to catch fish, not the main classifications of the fisheries themselves.

Incorrect. These terms describe production methods, specifically distinguishing between wild-capture fisheries and different types of aquaculture.

The scenario describes a management action triggered by a bycatch limit (unintended catch), rather than controlling the primary target catch of the fishery.

The precautionary principle involves taking protective action in the absence of complete scientific certainty, whereas this closure is a specific action based on concrete, real-time data thresholds.

While monitoring is part of the process, the actual closure of a fishery section is an active spatial management strategy (zoning), not merely the monitoring of fishing effort.

High demand and economic value actually make fishing quotas more difficult to enforce, as they increase the financial incentives for illegal, unreported, and unregulated fishing.

Intense fishing pressure often removes the largest, most fecund individuals (often older females), which typically decreases the overall reproductive capacity and success of the stock rather than increasing it.

While spatial distribution can change due to environmental factors like climate change, the most direct and primary consequence of intense harvesting on the stock itself is the reduction in population size and average individual size.

Australia is actually one of the world's largest producers and exporters of wild-caught abalone, rather than a major importer.

While imported, fish meal is primarily used for agricultural and aquaculture feed, not as an edible seafood product for human consumption.

Rock lobster is one of Australia's most valuable seafood exports, heavily exported to international markets rather than imported.

Incorrect. Trawling is an industrial fishing method requiring expensive vessels and massive nets, making it inaccessible and impractical for small, low-income communities.

Incorrect. Commercial fisheries operate on a massive scale for global or national profit, requiring significant capital investment that small communities typically lack.

Incorrect. Recreational fishing is done for sport or leisure rather than survival, whereas small communities in developing nations rely on fishing for essential sustenance.

Electronic monitoring is an enforcement tool used to ensure compliance with regulations, rather than the management mechanism that defines a fixed quota.

Dynamic spatial zoning involves managing where fishing can occur by opening and closing specific areas, which is different from setting a fixed catch limit.

Limiting effort (such as restricting the number of boats or days at sea) is an input control, whereas fixed quotas are output controls based on catch limits.

Tracking spatial movement does not rely solely on visual census; it frequently utilizes advanced technologies like acoustic telemetry, satellite tagging, and mark-recapture methods.

Spatial movement tracking is actually widely used for highly migratory species to understand their complex travel routes and seasonal distributions.

While abiotic factors like temperature do influence fish movement, the primary limitation of the method is the overall unpredictability of these dynamic shifts, rather than the reliance on the factors themselves.

If there is strong evidence to support a decision, standard evidence-based management applies rather than the precautionary principle, which is used when evidence is lacking.

If a decision is known to result in a long-term negative impact, it should simply be avoided. The precautionary principle applies when the outcome is uncertain, not when harm is guaranteed.

The precautionary principle is a proactive, guiding philosophy for initial decision-making, not a last resort to be used only after other strategies have failed.