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🐟 Fishing series: How fishing plays a part in the collapse of our climate: Difference between revisions
🐟 Fishing series: How fishing plays a part in the collapse of our climate (view source)
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For a large part, farming ponds tend to be filled and drained once per year with water. Water is also added periodically to counterbalance water lost through leakage and evaporation. While one might consider this as water use, one could also argue it to be a form of water storage and that leakage represents a service to the ecosystem as it can serve to recharge groundwater reserves that are deep enough for the soil to act as a natural filter. The latter argument only holds, however, if leakage does not stream into rivers and lakes, as it could be contaminated by nitrogen and phosphorus wastes from processed feeds. | For a large part, farming ponds tend to be filled and drained once per year with water. Water is also added periodically to counterbalance water lost through leakage and evaporation. While one might consider this as water use, one could also argue it to be a form of water storage and that leakage represents a service to the ecosystem as it can serve to recharge groundwater reserves that are deep enough for the soil to act as a natural filter. The latter argument only holds, however, if leakage does not stream into rivers and lakes, as it could be contaminated by nitrogen and phosphorus wastes from processed feeds. | ||
==== <u>The detrimental aspects of offshore marine aquaculture</u> ==== | |||
[[File:FMarinefarm.png|thumb|Thumbnailed image|Offshore marine aquaculture pens]] | |||
A large part of the aquaculture industry is also based on offshore marine farms. Mainly seen on the coast of Chile and the fjords of Norway, this method involves the use of large cages (also known as pens) of roughly 1000m2 large, which are left to float a few kilometers away from the coast. Just as for livestock farming on land, these structures often create a stressful, overcrowded environment for fish to grow into. Other than the production of low quality fish, marine farms produce gigantic amounts of waste which falls on the sea bed, polluting the surrounding areas and potentially spreading diseases to wild species. Worst still, since the antibiotics poured into the water to help fight diseases among fish populations aren’t fully absorbed, they often getleaked back into the water and carried away by streams. Another issue comes from the questionnable durabilty of the material used in buidling the cages which can break and lead farmed fish to escape by the thousands, later competing for ressources with wild species and disrupting the ecosystem. | |||
== Least climate impactful species == | == Least climate impactful species == | ||