How agriculture damages the salmon


The risks associated with the salmon farming industry to be evaluated for the Discovery Islands region are threefold; (i) risk of introduction of exotic pathogens, (ii) risk of amplification of exotic or endemic pathogens and parasites, and (iii) risk of pathogen mutation to higher levels of virulence.

  1. Chemical Inputs. Excessive use of chemicals, such as antibiotics, anti-foulants and pesticides, or the use of banned chemicals can have unintended consequences for marine organisms and human health.
  2. Disease and Parasites. …
  3. Escapes. …
  4. Nutrient Pollution and Carrying Capacity. …
  5. Social Issues.


How does salmon farming harm the environment?


  • (1)FAO 2009. …
  • (2) Marra (2005).When will we tame the ocean. …
  • (3)Vasemagi (2005). …
  • (4) Rosenberg (2008).The price of lice. …
  • (5) Braithwaite (2010).Aquaculture and restocking: implications for conservation and welfare. …
  • (6) Warner (1993). …
  • (7) Hites (2004). …

Is salmon farming bad for the oceans?

The outbreak of diseases on salmon farms, overfishing, and global warming are creating extremely fragile ecosystems. On salmon farms, excess feed not consumed by the fish and laden with antibiotics, pesticides, and fish feces often makes its way into the oceans. This waste does not magically disappear.

Can salmon farming be sustainable?

The sector is widely regarded as a more sustainable alternative to livestock, with a lower environmental footprint than meat, but is this actually the case? The green case for farmed salmon . In some ways, salmon is a greener option than meat. The salmon production industry is relatively well managed in comparison to livestock production.

Is farmed salmon really salmon?

PRV, which devastated salmon farms in Norway, is a disease linked to heart and skeletal muscle inflammation in farmed salmon, and kidney and liver damage in wild B.C. salmon. PRV, which devastated salmon farms in Norway, is a disease linked to heart and skeletal muscle inflammation in farmed salmon, and kidney and liver damage in wild B.C. salmon.


How does agriculture affect salmon?

As an industry, the ocean-farming of salmon is only about 40 years old. But the harm it causes has been widely documented, ranging from spreading parasites to pesticide pollution, and escaped fish muddying the wild salmon gene pool.

What are the disadvantages of salmon farming?

Salmon farming is wreaking ruin on marine ecosystems, through pollution, parasites and high fish mortality rates which are causing billions of pounds a year in damage, a new assessment of the global salmon farming industry has found.

What are the negative effects of fish farming?

Fish farms can impact wild fish populations by transferring disease and parasites to migrating fish. Aquaculture can also pollute water systems with excess nutrients and fecal matter due to the large numbers and concentrations of farmed fish. Sometimes equipment used in aquaculture can be problematic.

How much waste does a salmon farm produce?

According to the journal Science, a 2-acre salmon farm produces as much waste as a town of 10,000 people. Salmon farms in British Columbia were found to be producing as much waste as a city of half a million people.

What are the pros and cons of salmon farming?

Fish Farming Pros & ConsPro: Replenishment. Fish farming allows us to replenish the food fish supply at a faster rate than the oceans can produce it, allowing suppliers to keep up with demand.Pro: Employment. … Pro: Nutritional Provisions. … Con: Environmental Damage. … Con: Feeding. … Con: Lice and Bacteria.

Why is farm-raised salmon bad for the environment?

Farmed salmon also contain more toxins than their wild counterparts since their feed contains higher toxin levels. The uneaten food, antibiotics, pesticides and feces of the fish pollute the water with both nutrients and chemicals.

Why is salmon farming considered a waste of resources?

Excess food and fish waste increase the levels of nutrients in the water and have the potential to lead to oxygen-deprived waters that stress aquatic life.

Is fish farming harmful to the environment?

Farming fish places a significant burden on the natural environment, through the diseases that transmit to wild populations, pollution by chemicals and waste, and the impact on local species when non-native fish escape into the wild.

How does fish farming harm the local ecosystem?

Fish-farming is thought to contribute to eutrophication and the worldwide growth of this industry is of concern. Faeces and uneaten food pellets from fish farms alter the organic matter in the sediment, which can change the consumption of oxygen and cause local eutrophication.

Is salmon farming unethical?

Not only is salmon farming bad for animal welfare, but it is also damaging the environment. Organic and chemical waste from Scottish salmon farms is changing the chemistry of sediments and killing marine life on the seabed. Waste from farms can lead to poor water quality and harmful algal blooms.

Scottish salmon farm facts

In 2017, production of Atlantic salmon increased to 189,707 tonnes. The highest level of production recorded in Scotland.

Why isn’t this same technology being used in Scotland?

The salmon farming industry has insisted it is working hard to find solutions to the problem of sea lice, and is making progress in rearing so-called cleaner fish which feed off the lice, avoiding the need for chemicals.

Agricultural pollution is the main source of diffuse pollution

Diffuse pollution refers to various pollutants which seep into water at various points, collectively causing untold destruction – poor agricultural practices are the leading source of this.

2.9 million tonnes of soil are lost from fields every year in England & Wales

Excess fine sediments from soil loss clog spawning redds and kill invertebrates in our rivers and lakes.

Phosphate pollution kills the food chain for fish and creates toxic choking algae

Phosphates from fertilisers changes plant communities. This can lead to toxic algal blooms, a risk to humans and animals alike.

Pesticides & chemicals damage ecology

Chemicals and pesticides used to increase yield, reduce pests and stop disease are running off fields and negatively impacting our water courses.

Delicate food-chains are disrupted

Antibiotics, wormers and other medication from livestock are leaching into our waters – the worrying impact of which is not fully understood.

We need to ensure governments enforce the rules and take much needed action, and we need your help to do this

Not all farmers pollute rivers, but a minority do and seem not to care, while others do so unintentionally. So, we are highlighting the problem of lack of enforcement of agricultural pollution rules.

Contact us with your agricultural pollution incident information

After you have reported the incident to the EA, SEPA or NRW, and acquired an incident number, please contact us using the adjacent form.

A constantly evolving world

Over the past few years every industry has been experiencing rapid, extensive, and sometimes devastating change and the food industry is no exception.

What is salmon farming?

Just like we farm animals on land, aquaculture is the farming of fish in the ocean. Salmon is the common name for several species of fish in the family Salmonidae (e.g. Atlantic salmon, Pacific salmon). You can find salmon from both wild and farmed sources, but the most commercially available is Atlantic salmon which is farmed.[1]

The future of salmon farming

We recognize that an increased production of farmed salmon is required to ensure future demands for protein are met, however this must be matched by significant reductions in environmental impact and improvements in resource efficiency.


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