Fishing Methods Technology and Sustainability

<p>Artisanal fisheries (B)</p> Signup and view all the answers

<p>Sails can be a hindrance and require specific conditions for use. (C)</p> Signup and view all the answers

<p>They contribute significantly to direct human fish consumption. (D)</p> Signup and view all the answers

<p>To improve stability and performance in wind. (B)</p> Signup and view all the answers

<p>Satellite navigation devices and echo sounders (B)</p> Signup and view all the answers

<p>Diesel engines were introduced for navigation. (D)</p> Signup and view all the answers

<p>Increased capability for long-distance navigation. (A)</p> Signup and view all the answers

<p>Capacity to preserve caught fish during trips. (A)</p> Signup and view all the answers

<p>Due to limited storage facilities on board. (B)</p> Signup and view all the answers

<p>The vessel requires an isolated holding area. (C)</p> Signup and view all the answers

<p>Greater fuel efficiency with fewer trips. (B)</p> Signup and view all the answers

<p>Radar and echo sounders (sonar). (A)</p> Signup and view all the answers

<p>High costs associated with storage and ice. (B)</p> Signup and view all the answers

<p>A decline in the populations of some fish groups. (D)</p> Signup and view all the answers

<p>They can regenerate but are subject to overfishing. (C)</p> Signup and view all the answers

<p>Lack of controls and regulations on fishing practices. (D)</p> Signup and view all the answers

<p>Reorganization of fishing operations and management. (D)</p> Signup and view all the answers

<p>Identifying available stocks while maintaining sustainability. (D)</p> Signup and view all the answers

<p>They must be managed to prevent biological collapse. (A)</p> Signup and view all the answers

<p>Global population growth and demand for fish. (D)</p> Signup and view all the answers

<p>Balancing fish stock identification with sustainable practices. (C)</p> Signup and view all the answers

<p>To determine the locations of schools of fish. (A)</p> Signup and view all the answers

<p>Echo sounding. (D)</p> Signup and view all the answers

<p>They are transparent to fish. (C)</p> Signup and view all the answers

<p>1500 meters per second. (A)</p> Signup and view all the answers

<p>By calculating the time it takes for sound to bounce back. (D)</p> Signup and view all the answers

<p>They have a long lifespan. (A)</p> Signup and view all the answers

<p>Finding wreckage of sunken ships. (C)</p> Signup and view all the answers

<p>They get saturated with water. (A)</p> Signup and view all the answers

The selection of fishing gear depends on fish species, resources, environmental conditions (like water depth and currents), weather, and vessel type.

A fishing method using two nets instead of one, often used in coastal fishing to potentially reduce costs.

Using GPS and echo sounders to find fishing areas, improve safety, and locate new zones.

Small-scale, regional fisheries using small, typically undeveloped boats.

A type of vessel used in artisanal fishing, though less common now, requiring specific weather, boat design, and crew expertise.

Sailing vessels need special conditions for use and require more stability compared to motorized vessels.

A significant part of global fish production for direct human consumption, exceeding a quarter of the global fish catch.

Technological advancements, including in navigation and fishing gear, have changed fishing practices, and accessibility.

To understand and manage fish populations sustainably, focusing on identifying fish stocks, evaluating current fishing practices, and creating effective management strategies.

Globally, fish catches increased significantly from 1950 to 2024, but this growth is often unsustainable.

Fishing at a rate faster than fish populations can replenish, causing declines in fish stocks.

Maintaining fish stocks at a level that they can replenish over time, ensuring long-term availability of fish for fishing.

The methods used in catching fish, ranging from traditional to modern techniques. Some methods can be harmful to the environment.

Fish populations can grow back, but only if fishing is done in a controlled and sustainable manner.

The point in which fisheries will deplete if fishing activity is done at a maximum rate for an extended period.

Inland fishing often faces problems like limited access to markets, primitive techniques, and scarcity of fishing tools, affecting their long-term sustainability.

The fisheries industry evolved through stages including mechanization, improvements in vessel technology, and advancements in onboard fish storage and preservation.

The shift from relying on manual or wind power to using diesel engines in fishing boats, enabling longer voyages and increased fishing efficiency.

Advancements in fishing vessel design allowed for improved storage, fuel efficiency, and enhanced safety at sea.

Keeping fish fresh during extended fishing trips, achieved through improved storage and use of ice.

Optimizing fueling strategies, such as extended fishing trips, to reduce time spent traveling to and from fishing grounds, minimizing fuel costs.

Small-scale fisheries often limit trips to a single day due to a lack of onboard storage, while large vessels can remain at sea for several days.

Navigation tools used by fishing vessels to locate fish schools and improve safety and navigation.

The ability of a fishing vessel to operate independently from shore, including the time spent at sea, the size of catch, and the equipment available.

A sensor using sound waves to detect underwater objects, like fish schools or shipwrecks.

A method determining distance by measuring the time it takes for a sound to return after hitting an object.

Fishing net materials, lighter and more durable than natural fibers, requiring less maintenance.

All the equipment and devices used in fishing, including vessels and support facilities (ports, maintenance).

Approximately 1500 meters per second.

A group of fishing vessels.

Sonar is used for locating fish, shipwrecks, enemy subs, and water depths in fishing and warfare.

Earlier techniques like using ropes with weights to find fish based on vibrations.