Trawling is one of the most widely used methods of extracting and obtaining living resources. For example, trawling in the Mediterranean is one of the most common and is used to fish for hake, prawns, shrimp and Norway lobster, among others.
However, it is a type of fishing that destroys the seabed, as the nets of trawlers pull out all kinds of corals, algae and microorganisms in their path, becoming a great threat that damages the seabed of all areas. regions of the planet where this type of fishing is carried out.
In this Green Ecologist article we tell you what is trawling, and the environmental problems that it entails.
The trawling or retro fishing It is an active fishing, that is, it does not wait for the movement of the fish to catch it and is based, fundamentally, on the use of a heavy net that sweep the bottom of the sea. This type of fishing emerged during the second part of the fourteenth century and its use has grown exponentially until today. In addition, it is used increasingly deeper in the waters of seas and oceans in different corners of the planet.
Trawling is one of the least selective fisheries that exist, since captures everything you find during the dragging process. It is a type of fishing that uses industrial methods, destroying the seabed during the process of catching fish.
Regarding its main tool, there are two types of trawl nets:
Trawling destroys sedimentary ecosystems that constitute the deep seabed, removing and lifting the different particles that constitute the sediment and leaving numerous small organisms in suspension. They are the main inhabitants of marine sediments, which constitute the base of the food chain in these ecosystems at great depths.
In addition, it reduces the organic carbon content and reduces biodiversity, becoming one of the main causes of the degradation of the seabed. In this way, the seabed will remain as a poor and compacted surface sediment, making a new colonization of species in this ecosystem more difficult. In this other Green Ecologist article you can learn more about the Loss of biodiversity: causes and consequences.
This topic is also related to the environmental problem of the abuse of the resources that nature offers us and, therefore, we advise you to also read this other post on the Overexploitation of natural resources: causes and consequences.
The trawlers or trawlers they use trawls and motors with adequate power for the speed of the trawl, using bottom and pelagic trawls.
Among the types of trawlers we can find:
As we have discussed previously, trawling is very harmful to the seabed. For this reason its use and more regulation is required.
In many countries trawling is regulated, although in very few it is even prohibited. Its prohibition would be a great advance for the economy of the fishing sector, favoring the maintenance of marine biodiversity, as well as the balance and regeneration of marine resources.
There is still a long way to go until it is possible to have a type of trawling that includes among its objectives sustainability and respect for the marine environment, for which different agreements will be necessary at the international and national level.
If you want to read more articles similar to What is trawling, we recommend that you enter our category of Other environment.Bibliography