Why the best fishing grounds are located in western costal areas of south america?
Answers
Answered by
5
mark as BRAINLIEST ANSWER
follow me
The rich fishing grounds around Iceland depend on highly fertile phytoplankton communities. Phytoplankton are tiny water plants. In the summer, they live in the upper photic zone of the sea where they are carried by currents. Like plants on land, phytoplankton have the ability to use sunlight to make organic matter out of non-organic. This process is called photosynthesis and provides the main source of organic material for other organisms. Phytoplankton is food for zooplankton, which in turn is food for young fish and for pelagic fish. So the phytoplankton is the basis for all organic life in the sea, and thus for the fishing stocks.
In order to flourish and grow, phytoplankton need nutrients such as nitrate, phosphate and silica. Deep sea is normally richer in nutrients than surface sea, and the most fertile seas in the world are found where the nutrient-rich deep sea water has easy access to the surface layers. This can be found in the upstream areas off the west coast of South America and Africa and in high latitudes, where winds and ocean currents promote the mixing of deep sea with surface layers, thus renewing nutrients near the surface.
Phytoplankton seen under a microscope
To the south and west of Iceland the nutrient-rich deep sea streams up by the continental shelf and enriches the surface waters. At the sea current divide, southeast and northwest of the island the warm sea from the south and the cold sea from the north meet and draw up nutrients from the deep, throughout the whole summer. So the
follow me
The rich fishing grounds around Iceland depend on highly fertile phytoplankton communities. Phytoplankton are tiny water plants. In the summer, they live in the upper photic zone of the sea where they are carried by currents. Like plants on land, phytoplankton have the ability to use sunlight to make organic matter out of non-organic. This process is called photosynthesis and provides the main source of organic material for other organisms. Phytoplankton is food for zooplankton, which in turn is food for young fish and for pelagic fish. So the phytoplankton is the basis for all organic life in the sea, and thus for the fishing stocks.
In order to flourish and grow, phytoplankton need nutrients such as nitrate, phosphate and silica. Deep sea is normally richer in nutrients than surface sea, and the most fertile seas in the world are found where the nutrient-rich deep sea water has easy access to the surface layers. This can be found in the upstream areas off the west coast of South America and Africa and in high latitudes, where winds and ocean currents promote the mixing of deep sea with surface layers, thus renewing nutrients near the surface.
Phytoplankton seen under a microscope
To the south and west of Iceland the nutrient-rich deep sea streams up by the continental shelf and enriches the surface waters. At the sea current divide, southeast and northwest of the island the warm sea from the south and the cold sea from the north meet and draw up nutrients from the deep, throughout the whole summer. So the
Similar questions