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Lesson 2 of 7Managing Canada's Resources & Industries
Unit 3 · Lesson 2 of 7

Primary Industries: Farming, Forestry, Fishing and Mining

How Canada's primary industries take resources from nature, why they are located where they are, how the method of extraction depends on the resource and its accessibility (clear-cutting vs selective cutting, wild fisheries vs aquaculture, open-pit vs underground mining, oil sands mining vs in situ), what went wrong with the Atlantic cod, and what responsible resource development looks like.

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Key things to remember

  1. 1Primary industries extract or harvest resources: farming, forestry, fishing, mining, and oil and gas. In 2024 the natural resource sector made up about 16 percent of GDP (directly and indirectly) and about 53 percent of merchandise exports (Natural Resources Canada).
  2. 2The extraction method depends on the resource and its accessibility: open-pit for shallow ore, underground for deep ore; oil sands mining only for bitumen less than about 75 m deep, in situ (SAGD) for the rest.
  3. 3Clear-cutting removes all trees in an area and suits same-aged boreal forest; selective cutting removes chosen trees and keeps forest cover.
  4. 4The northern cod moratorium was announced on July 2, 1992, after overfishing; tens of thousands of fishers and plant workers lost their jobs. A limited commercial fishery reopened in 2024.
  5. 5Aquaculture is fish and shellfish farming; it eases pressure on wild stocks but open-net pens can spread sea lice and disease. BC open-net salmon farms must close by June 30, 2029.

For most of its history, Canada's economy was built on shipping raw materials to other countries: first cod and furs, then timber and wheat, later minerals, oil and gas. Economists call these staples. Resource industries are still a big deal. In 2024, Natural Resources Canada estimated that the natural resource sector (energy, minerals and metals, and forestry), directly and indirectly, made up about 16 percent of Canada's GDP and supported about 1.8 million jobs, and natural resource products made up about 53 percent of the value of Canada's merchandise exports. This lesson looks at the industries that do the extracting and harvesting, and at how they do it.

PrimaryTakes resourcesFarmingMiningForestryFishingSecondaryMakes productsAuto plantsSteel millsFood processingTertiaryGives servicesRetailHealth careTourismQuaternaryCreates knowledgeResearchSoftware (IT)FinanceFollowing wheat through the sectors:Wheat farmgrows grainFlour millgrinds flourBakerysells breadCrop labbreeds new wheatNew wheat varieties go back to farms
Fig 1The four economic sectors: primary (extracting resources: farming, mining, forestry, fishing), secondary (manufacturing: autos, steel, food processing), tertiary (services: retail, health care, tourism) and quaternary (knowledge: research, IT, finance), with arrows following wheat to a flour mill, a bakery and research on new crop varieties. This lesson focuses on the primary sector.

Farming

Only a small part of Canada, roughly 7 percent of its land, is farmed, because most of the country is too cold, too rocky or too wet. Farms cluster where soil, climate and flat land line up. The Prairies grow most of Canada's wheat, canola, barley, lentils and beef cattle on chernozem soils. Southern Ontario and Quebec have the longest growing season and much of Canada's best farmland: dairy, corn, soybeans, vegetables in the Holland Marsh, and tender fruit and grapes in the Niagara fruit belt, where Lake Ontario and the Niagara Escarpment protect orchards from frost. The Okanagan and Annapolis valleys grow apples and grapes. The problem in Ontario is that the best farmland is also where cities are spreading (Unit 5).

  • No-till farming: seeds are planted straight into the stubble of last year's crop, so the soil is not ploughed. The stubble protects the soil from wind and water erosion and keeps carbon in the ground. Since the 1990s it has become common across Prairie cropland.
  • Crop rotation: changing crops from year to year (for example canola, then wheat, then lentils) keeps soil healthy and breaks pest cycles. Lentils and peas add nitrogen to the soil.
  • Precision agriculture: GPS-guided tractors, drones and satellite images let farmers apply seed, fertilizer and water only where they are needed, saving money and reducing runoff into rivers and lakes.

Forestry

Canada has roughly 9 percent of the world's forests, and most of its forest land is Crown (public) land, so provinces decide who may cut, where and how, and companies must regrow the forest after harvest. Each year only a small fraction of Canada's forest, less than half of 1 percent, is harvested. Logging happens mainly in the boreal forest across the Shield (pulp, paper and lumber from spruce, pine and fir) and in the temperate rainforest of the BC coast (giant cedar, hemlock and Douglas fir). How the trees are cut depends on the type of forest and on what people value about it.

AClear-cutting
  • All the trees in an area are cut at once
  • Cheapest and safest for workers; suits forests of same-aged trees, such as much of the boreal forest, which naturally regrows after fires
  • Then replanted or left to regrow naturally
  • Concerns: loss of habitat, soil erosion, muddy streams and an ugly landscape for years
BSelective cutting
  • Only certain trees are chosen and cut, leaving the rest standing
  • Suits mixed forests with trees of different ages, such as many Great Lakes–St. Lawrence forests
  • Keeps forest cover, habitat and recreation value
  • Concerns: more roads and higher costs per tree; poorly done, it can take the best trees and leave the weakest

Fishing and aquaculture

The collapse of the northern cod
For centuries the cod of the Grand Banks seemed endless. After the 1950s, huge factory trawlers from many countries, new sonar and nets that dragged the sea floor caught far more fish than could be replaced, and scientific warnings were not acted on quickly enough. On July 2, 1992, federal Fisheries Minister John Crosbie announced a moratorium (a ban) on fishing northern cod. Estimates of the jobs lost among fishers and fish plant workers in hundreds of coastal communities run from about 30,000 to over 35,000, and many young people left Newfoundland and Labrador. The stock recovered only slowly. In 2024 the federal government reopened a commercial northern cod fishery, with a total allowable catch of 18,000 tonnes.

Today Canada's wild fisheries are managed with quotas (catch limits for each species and area), closed seasons and rules on gear. The Atlantic catch has shifted from groundfish like cod to shellfish: lobster and snow crab are now the most valuable. A growing share of seafood comes from aquaculture, the farming of fish and shellfish, such as salmon in net pens in BC and New Brunswick and mussels and oysters in Prince Edward Island. Fish farming takes pressure off wild stocks, but open-net salmon pens can spread sea lice and disease to wild salmon and release waste. In 2024 the federal government announced that open-net pen salmon farming in BC coastal waters must end by June 30, 2029, pushing the industry toward closed containment systems. Some coastal First Nations supported the ban to protect wild salmon; others with fish-farm jobs and agreements in their territories opposed it.

Mining and the oil sands

AOpen-pit (surface) mining
  • Used when the ore is near the surface
  • Rock is blasted and scooped out, making a huge stepped pit
  • Cheaper per tonne and safer for workers
  • Disturbs a large area; leaves waste rock piles and a pit to reclaim
  • Examples: diamond mines in the NWT, iron ore in Labrador, oil sands mines north of Fort McMurray
BUnderground mining
  • Used when the ore lies deep below the surface
  • Shafts and tunnels are dug to reach the ore body
  • More expensive and needs ventilation and careful safety systems
  • Disturbs far less of the land surface
  • Examples: nickel and copper mines around Sudbury, gold mines in Timmins and Red Lake

The oil sands of northern Alberta show how accessibility decides the method. Only bitumen less than about 75 m deep can be surface mined: trucks and shovels dig the sand, and hot water separates the bitumen. According to the Government of Alberta, the mineable area is only about 4,800 km², or about 3.4 percent of the 142,200 km² under which the oil sands lie. Everything deeper must be recovered in situ ("in place"), most often by steam-assisted gravity drainage (SAGD): steam is pumped down one well to soften the bitumen, which flows down into a second well and is pumped up. In situ disturbs much less land and creates no tailings ponds, but making the steam burns natural gas, so it still releases a lot of greenhouse gas.

What responsible resource development looks like
Look for projects that reduce harm at every stage: reclamation plans and money set aside before a mine opens, so the land is restored afterward; electric equipment underground, as at the Borden gold mine near Chapleau, Ontario, which opened in 2019 using battery-electric vehicles instead of diesel; water recycling and safer tailings storage; carbon capture, such as the Quest project near Edmonton, which has stored about a million tonnes of carbon dioxide a year underground since 2015; and partnerships with First Nations, Métis and Inuit communities, including Indigenous Guardians who monitor the land (Lesson 6).

Worked examples

Reveal one step at a time and try to beat it to the next line.

Example 1
Explain why oil sands companies use surface mining in some places and in situ methods in others, and compare the environmental impacts of the two.
Example 2
Explain the causes of the collapse of the northern cod stock, and identify one lesson for managing renewable resources.
Example 3
A forestry company plans to harvest two areas: a stand of same-aged jack pine in the boreal forest of northwestern Ontario, and a mixed forest of maple, oak and pine near cottages in the Haliburton Highlands. Recommend a cutting method for each and justify it.

Where marks get lost

  • Saying clear-cutting is always wrong and selective cutting is always right. Each suits different forests; the key questions are forest type, regrowth and what else people value in that forest.
  • Thinking the cod collapsed only because of foreign boats. Canadian fleets, overly high quotas and slow responses to warnings were also major causes.
  • Calling in situ oil sands production "clean." It disturbs less land than mining, but making steam burns natural gas and releases a lot of greenhouse gas.
  • Assuming open-pit mining is used because it is cheaper wherever ore exists. Depth decides: deep ore can only be reached from underground.
  • Forgetting that aquaculture has costs as well as benefits: sea lice, disease, escaped fish and waste can harm wild stocks.

Flashcards 9

Primary industry
Clear-cutting
Selective cutting
Moratorium
+ 5 more

Practice

1
Match each extraction method to the situation it suits best.
Open-pit mining
Underground mining
In situ (SAGD)
Selective cutting
2
Alberta's oil sands lie under about 142,200 km² of land, and about 4,800 km² of that is shallow enough to mine. What percentage of the oil sands area is mineable? Give your answer to one decimal place.
%
3
Suppose a province has 40 million hectares of forest and harvests 0.4 percent of it each year. How many hectares are harvested each year?
ha
4
Put the events in the story of the northern cod in order.
  1. 1A limited commercial northern cod fishery reopens
  2. 2Canada announces the northern cod moratorium
  3. 3Catches fall as the cod stock shrinks
  4. 4Factory trawlers with sonar begin fishing the Grand Banks heavily
  5. 5Canada extends its fishing zone to 200 nautical miles and Canadian fleets expand
5
Which statement about aquaculture is the most accurate?
6
Why do many Prairie farmers use no-till farming?
7
What is the name for the farming of fish and shellfish, such as salmon in net pens or mussels on ropes?
8
Which pair is correctly matched?

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