Are the world s three largest fishing grounds located at the intersection of cold and warm currents?

Peruvian fisheries, formed by up-compensating currents along the Peruvian coast.

Yes, Little Japan is one of them, at the intersection of cold and warm currents.

Peruvian Fishing Grounds! It is the largest fishing ground in the world! Unlike the other three major fisheries in the world (Newfoundland, Hokkaido, and North Sea), the upwelling currents that prevail off the coast of Peru carry large amounts of phosphates and silicates to the surface of the seawater, and plankton blooms, which in turn feed the fish.

The details are as follows: The world's four largest fishing grounds.

In terms of the impact of ocean currents on fishing grounds, there are four major fishing grounds in the world:

1. The Hokkaido Fishing Ground is formed by the confluence of the warm current of Japan and the cold current of the Kuril Islands.

2. The Newfoundland Fishery is formed by the confluence of the warm Gulf Current and the cold current of Labrador.

3. The North Sea fishery is formed by the confluence of the North Atlantic Warm Current and the East Greenland Cold Current.

4. Peruvian fisheries are formed by rising compensating currents along the Peruvian coast.

All in all, marine fishery resources are mainly concentrated in the coastal continental shelf area, that is, the part of the continental seabed that extends from the coast to a depth of about 200 meters. Plankton flourishes because of the concentration of sunlight, strong biophotosynthesis and abundant nutrients brought by rivers entering the sea. They are bait for fish and are generally abundant in temperate seas.

In the temperate zone, the surface sea water and the bottom sea water are exchanged in winter, and the upper sea water is rich in nutrients, which is conducive to the reproduction of plankton. In addition, the confluence of cold and warm currents and the flooding of cold seawater are also abundant.

1. The confluence of cold and warm currents will stir the seawater

The density of cold currents is high, and the density of warm currents is small. There are a lot of nutrients at the bottom of the ocean, and when the cold and warm currents meet, the cold currents are lower and the warm currents are above, and the nutrients from the bottom of the ocean will go to the upper layers. And most of the environment in which fish grow is the upper layer of the ocean, and with the abundance of nutrients, there will naturally be fishing grounds.

2. The temperature at the intersection of cold and warm currents is suitable

Most of the places where cold and warm currents meet are shallow areas near the mainland, where sunlight can reach the bottom of the sea, creating a suitable temperature.

3. Fish move with the current:

Many fish move with ocean currents, so schools of fish are naturally denser where cold and warm currents meet.

The reason why the confluence of cold and warm currents forms a fishing ground is that the confluence of cold and warm currents brings a rich variety of bait to fish. The confluence of the warm current of the cold mountains will stir the sea and the water will stir up, driving the nutrient salts on the seabed to spread, and these salts will make a large number of plankton multiply and provide abundant bait for fish. Many fish move with ocean currents, so where cold and warm currents meet, schools of fish are denser than elsewhere.

The reason why the confluence of cold and warm currents forms a fishing ground is that the confluence of cold and warm currents brings a rich variety of bait to fish. The confluence of cold and warm currents stirs up the seawater, driving the nutrients on the seafloor to overflow, which allow a large number of plankton to multiply and provide abundance for fish. Bait.

Many fish move with ocean currents, so where cold and warm currents meet, schools of fish are denser than elsewhere.

First, where the cold and warm currents meet, the water temperature is moderate, and it is generally in the temperate zone. Or a dimensional climate with relatively stable temperatures.

The second and main reason is that the cold and warm currents converge, due to the different temperatures, a strong upward convection is formed, which turns the microorganisms on the seabed up, bringing a large number of bait and attracting fish.

The world's four largest fishing grounds.

and Zhoushan Fishery in China.

It's all for this reason.

The confluence of cold and warm currents brings nutrients from the deep sea to the surface, which encourages plankton to flourish and provide sufficient food for fish.

The following conditions must be met to constitute a fishing ground:

First, there should be a large number of fish migrating through or inhabiting in clusters.

Marine fisheries production is mainly aimed at dense and stable populations of fish or economic animals that are engaged in migratory, breeding, foraging or wintering activities, especially breeding groups, which are dense and stable, and most fish stocks are clustered in the same body length group or the same age group, such as salmon trout.

Second, there should be suitable environmental conditions for fish clusters and habitats.

If, at a given time, there are external environmental conditions (both biotic and abiotic) suitable for fish and other economic animals to migrate, reproduce, forage and winter, they can cluster or inhabit together, thus creating conditions for the formation of fishing grounds.

When the sea water rolls at the confluence of warm currents and cold currents, nutrients such as microorganisms on the seabed turn up, and when there is food, a large number of fish are attracted to it, and a fishing ground is formed.

1. The confluence of cold and warm currents will stir the seawater, driving the nutrients on the seabed to overflow, and these salts make a large number of plankton reproduce, and plankton provide abundant bait for fish. 2.The cold and warm currents meet, and the water temperature is neutralized, creating a suitable temperature.

3.Many fish move with ocean currents, so where cold and warm currents meet, cold-water fish and warm-water fish are brought in respectively, and the fish population is denser than elsewhere.

Peruvian fishing grounds are formed by upwelling along the Peruvian coast Peruvian fisheries are formed due to the abundance of nutrients in the upper pan water, which is conducive to plankton reproduction.

Expansion: Peruvian fisheries are the center of fisheries in the Southeast Pacific Ocean, one of the four largest in the world, formed by the up-compensating currents of the Peruvian cold snap. It is rich in aquatic resources, including more than 800 species of fish and shellfish, including anchovy.

The reason why Peru's fishery resources are so abundant is inseparable from the unique natural conditions along the coast. There is a strong Peruvian cold current along the coast of Peru, and under the blowing of the perennial prevailing west wind and the south wind of the East Mold Hall, the phenomenon of the surface sea water drifting away from the coast and the cold water in the lower layer flooding. This not only significantly reduces the water temperature, but more importantly, it carries a large amount of nitrate, phosphate and other nutrients; In addition, the coastal area is cloudy and foggy, and the sunshine is not strong, which is conducive to the reproduction of plankton along the coast, which provides extremely favorable conditions for the reproduction and growth of cold-water fish, especially anchovy (which likes cold water below 20).

As a result, the Peruvian coast has become a large fishing ground, with a fishing area of about 370 kilometers wide.

There are two reasons for the formation of the world's fishing grounds: the convergence of cold and warm currents: Hokkaido fisheries, North Sea fisheries, Newfoundland fisheries; Upwelling: Peruvian Fishing Grounds.

Peruvian fisheries are formed by the upwelling of the Peruvian coast Because the upper sea water is rich in nutrients, which is conducive to plankton breeding, the Peruvian fishery is formed The North Sea fishery is generally believed to be formed by the confluence of the North Coastal Hydrocurrent and the cold East Greenland Fishery Newfoundland Fishery is formed by the confluence of the Gulf of Mexico Current and the Labrador Current. The Hokkaido Fishery is formed by the confluence of the Japanese Warm Current and the Kuril Current

So the answer is: