Collapse of the Atlantic northwest cod fishery

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Main article: Cod fisheries
The northwest Atlantic fishery abruptly collapsed in 1992, following overfishing since the late 1950s, and an earlier partial collapse in the 1970s.[1]

In 1992 the Canadian government declared a moratorium on the Northern Cod fishery, which for the past 500 years had largely shaped the lives and communities of Canada's eastern coast. The interplay between fishing societies and the resources which they depend on is obvious to almost any observer: fisheries transform the ecosystem, which pushes the fishery and society to adapt.[2] In 1992 summer, when the Northern Cod biomass fell to 1% of its earlier level,[3] Canada's federal government saw that this relationship had been pushed to breaking point, and they declared a moratorium, ending the region's 500-year run with the Northern Cod.

Causes of the collapse[edit]

Capture of the Atlantic northwest cod (y)stock in million tonnes, with Canadian capture in blue[4]
Capture of the Atlantic northwest cod stock in million tonnes, apart from Canada[4]

Academics have highlighted these three contributing factors in the eventual collapse of the cod fishery.

Technological[edit]

A major factor that contributed to the depletion of the cod stocks off the shores of Newfoundland included the introduction and proliferation of equipment and technology that increased the volume of landed fish. For centuries local fishermen used technology that limited the volume of their catch, the area they fished, and let them target specific species and ages of fish.[5] From the 1950s onwards, as was common in all industries at the time, new technology was introduced that allowed fishermen to trawl a larger area, fish to a deeper depth and for a longer time. By the 1960s, powerful trawlers equipped with radar, electronic navigation systems and sonar allowed crews to pursue fish with unparalleled success, and Canadian catches peaked in the late 1970s and early 1980s.[6]

These new technologies adversely affected the Northern Cod population in two important ways: by increasing the area and depth that was fished, the cod were being depleted until the surviving fish could not replenish the stock lost each year;[7] and secondly, the trawlers caught enormous amounts of non-commercial fish, which were economically unimportant but very important ecologically: incidental catch undermines the whole ecosystem, depleting stocks of important predator and prey species. With the Northern Cod, significant amounts of capelin – an important prey species for the cod – were caught as bycatch, further undermining the survival of the remaining cod stock.

Ecological uncertainty[edit]

Another factor important to consider in understanding the fishery's collapse is uncertainty in assessing the cod as a resource. Management of a resource is an extremely complex task, with a multitude of interests, perspectives, and sources of information to take into account; when knowledge regarding the resource is limited, or clouded by imprecision, the task of managing it becomes even more difficult. The management of fisheries is associated with an especially high degree of uncertainty due to problems inherent in the nature of the resource. Newfoundland's cod fisheries were no exception: an imperfect understanding of the ocean ecosystem; technical and environmental challenges associated with observation techniques, which led to incomplete data on the resource (the cod); and the naturally high levels of variability in the population due to dynamic environmental factors (such as ocean temperature) combined to make it arduous to discern the effects of exploitation.[8] Unfortunately, this led to predictions about the cod stock that were mired in uncertainty, making it more difficult for the government to choose the appropriate course of action.

Socioeconomic[edit]

In addition to ecological considerations, decisions regarding the future of the fisheries were also influenced by social and economic factors. Throughout Atlantic Canada, however most pronounced in Newfoundland, the cod fishery was a source of social and cultural identity.[9] For many families, it also represented their livelihood: most families were connected either directly or indirectly with the fishery as fishers, fish plant workers, fish sellers, fish transporters, or as employees in related businesses.[9] Additionally, many companies, both foreign and domestic, as well as individuals, had invested heavily in the boats, equipment and the infrastructure of the fishery, and therefore felt it was in their best interest to maintain an open-access policy to the ocean and its resources. This alludes to the unfortunate paradox that often accompanies open-access resources and is known by most as the Tragedy of the Commons: what is in the individual's best interest is not always in the best interest of a society at whole. In the case of Newfoundland and the Northern Cod fishery this meant that from the perspective of the individual participating in the fishing industry, maximizing their catch was in their best interest; however when the government failed to intervene – due largely to the highly sensitive nature of the political discourse created by the expansive group of stakeholders – the ecosystem was brought past its threshold and collapsed, leaving everyone worse-off.[citation needed]

When the government finally acted, it was too late. The 1992 moratorium was at first meant to last two years, hoping that the Northern Cod population would recover, and along with it the fishery. The damage done to Newfoundland's coastal ecosystem proved irreversible. Even after twenty years, the Northern Cod population has not rebounded[10] and the cod fishery remains closed.

Impact of the collapse on Newfoundland[edit]

The collapse of the Northern Cod fishery marked a profound change in the ecological, economic and socio-cultural structure of Atlantic Canada. The moratorium in 1992 marked the largest industrial closure in Canadian history,[11] and it was expressed most acutely in Newfoundland, whose continental shelf lay under the region most heavily fished. Over 35,000 fishers and plant workers from over 400 coastal communities became unemployed.[9] In response to dire warnings of social and economic consequences, the federal government intervened, initially providing income assistance through the Northern Cod Adjustment and Recovery Program, and later through the Atlantic Groundfish Strategy, which included money specifically for the retraining of those workers displaced by the closing of the fishery.[12] Newfoundland has since experienced a dramatic environmental, industrial, economic, and social restructuring, including considerable outmigration,[13] but also increased economic diversification, an increased emphasis on education, and the emergence of a thriving invertebrates fishing industry (as the predatory groundfish population declined, snow crab and northern shrimp proliferated, providing the basis for a new industry that is roughly equivalent in economic value as the cod fishery it replaced).[12]

Inspired by the Grand Banks cod fishery collapse, the Marine Stewardship Council was founded in 1997 to set global standards for sustainable fishing.

Present recovery status[edit]

In November 2006, Fisheries and Oceans Canada released an article suggesting that the unexpectedly slow recovery of the cod stock is due to inadequate food supplies, cooling of the North Atlantic, and a poor genetic stock due to the overfishing of larger cod.[14] During the summer of 2011, a study was announced to show that recovery of East Coast cod stocks around Nova Scotia showed promises of recovery, despite earlier thoughts of complete collapse.[15] It was found that initial stages of recovery began around 2005, though more time and studies were needed to study the long-term stability of the stock increase. In addition in 2010 a study by the Northwest Atlantic Fisheries Organization found that stocks in Grand Banks near Newfoundland & Labrador had recovered by 69% since 2007, though that number only equates to 10% of the original stock.[15]

In a letter to Nature in 2011, a team of Canadian scientists reported that cod in the Scotian Shelf ecosystem off Canada are showing signs of recovery.[16] Brian Petrie, a member of the team, said "Cod is about a third of the way to full recovery, and haddock is already back to historical biomass levels".[17]

Despite such positive reports, cod landings have continued to decline since 2009 according to Fisheries and Oceans Canada statistics through 2012.[18] This decline appears to be continuing through 2013.[19]

Notes[edit]

  1. ^ Kenneth T. Frank, Brian Petrie, Jae S. Choi, William C. Leggett (2005). "Trophic Cascades in a Formerly Cod-Dominated Ecosystem". Science 308 (5728): 1621–1623. doi:10.1126/science.1113075. PMID 15947186. 
  2. ^ Hamilton et al., 195.
  3. ^ Hamilton and Butler, 1.
  4. ^ a b Based on data sourced from the FishStat database FAO.
  5. ^ Keating, 1.
  6. ^ Hamilton et al., 200.
  7. ^ Hamilton et al., 199.
  8. ^ Cochrane, 6.
  9. ^ a b c Gien, 121.
  10. ^ http://www.dfo-mpo.gc.ca/stats/commercial/land-debarq/sea-maritimes/s2012aq-eng.htm
  11. ^ Dolan, 202.
  12. ^ a b Hamilton and Butler, 2.
  13. ^ Kennedy, 315.
  14. ^ "What's Holding Back the Cod Recovery?". Fisheries and Oceans Canada. November 1, 2006. Updated January 30, 2013.  Check date values in: |date= (help)
  15. ^ a b "East Coast cod found to be recovering". CBC News. June 27, 2011. 
  16. ^ Frank KT, Petrie B, Fisher JA and Leggett WC (2011) "Transient dynamics of an altered large marine ecosystem" Nature, 477 (7362): 86–89. doi:10.1038/nature10285
  17. ^ Coghlan, Andy (2011-07-28). "Cod make a comeback". New Scientist. Retrieved 2011-07-28. 
  18. ^ http://www.dfo-mpo.gc.ca/stats/commercial/land-debarq/sea-maritimes/s2012aq-eng.htm
  19. ^ http://www.bristolseafood.com/media/weekly-market-report

References[edit]

  • Cochrane, Kevern. "Reconciling Sustainability, Economic Efficiency and Equity in Fisheries: the One that Got Away." Fish and Fisheries 1 (2000): 3-21.
  • Dayton, Paul, et al. "Environmental Effects of Marine Fishing." Aquatic Conservation: Marine and Freshwater Ecosystems 5 (1995): 205-232.
  • Dolan, Holly, et al. "Restructuring and Health in Canadian Coastal Communities." EcoHealth 2 (2005): 195-208.
  • Gien, Lan. "Land and Sea Connection: The East Coast Fishery Closure, Unemployment and Health." Canadian Journal of Public Health 91.2 (2000): 121-124.
  • Hamilton, Lawrence, and Melissa J. Butler. "Outport Adaptations: Social Indicators through Newfoundland's Cod Crisis." Human Ecology Review 8.2 (2001): 1-11.
  • Hamilton, Lawrence, et al. "Above and Below the Water: Social/Ecological Transformation in Northwest Newfoundland." Population and Environment 25.3 (2004): 195-215.
  • Hutchings, Jeffrey. "Spatial and Temporal Variation in the Density of Northern Cod a Review of Hypotheses for the Stock's Collapse." Canadian Journal of Aquatic Science 53 (1996): 943-962.
  • Keating, Michael. "Media, fish and Sustainability." National Round Table on Environment and Economy February (1994).
  • Kennedy, John. "At the Crossroads: Newfoundland and Labrador Communities in a Changing International Context." The Canadian Review of Sociology and Anthropology 34.3 (1997): 297-318.