Alaska salmon fishery

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Boxes of salmon on a hoist in Petersburg, Alaska ca. 1915 Boxes of salmon Petersburg, Alaska.jpg
Boxes of salmon on a hoist in Petersburg, Alaska ca. 1915

The Alaska salmon fishery is a managed fishery that supports the annual harvest of five species of wild Pacific Salmon for commercial fishing, sport fishing, subsistence by Alaska Native communities, and personal use by local residents. The salmon harvest in Alaska is the largest in North America and represents about 80% of the total wild-caught catch, with harvests from Canada and the Pacific Northwest representing the remainder [1] In 2017 over 200 million salmon were caught in Alaskan waters by commercial fishers, representing $750 million in exvessel value. Salmon fishing is a nearly ubiquitous activity across Alaska, however the most valuable salmon fisheries are in the Bristol Bay, Prince William Sound and Southeast regions.

Contents

Overfishing in the middle of the 20th century led to a precipitous decline in stocks and the development of a comprehensive fisheries management system overseen by the Alaska Department of Fish and Game. Stocks have since rebounded and the Alaska salmon fishery has been certified as sustainable by the Marine Stewardship Council since 2000. [2]

History

Salmon have been an important source of food in Alaska for Native Communities for millennia. Alaska did not always have healthy stocks of salmon. The salmon catch grew rapidly with the expansion of the cannery capacity through 1920. This led to over fishing, which resulted in such low salmon stocks that President Eisenhower declared Alaska a federal disaster area in 1953. In fact, in 1959, statewide harvests totaled only about 25 million salmon, which is less than 20% of current sustained production. [3] This was a major factor in the declines of the Alaska salmon fishery that occurred between 1920 and 1959. Alaska achieved statehood in the year of 1959. [3] After analysis, it was clear that the reason for the decline was the lack of implementation of the federal policies in place before statehood. Furthermore, the Federal government failed to provide the financial resources needed to manage and research salmon stocks and fisheries such that fishing could be regulated and depressed stocks could be rehabilitated. The decline was temporarily arrested after Alaska became a state and instituted new conservation measures. However, the inexorable entry of more technological fishing gear coincided with further decline to record low levels in 1972. This decline helped promote the enclosure of the salmon fishery in 1973 under a limited entry permit system. Since then t catch has rebounded to near-record levels due to Alaska's salmon management.

Species

There are five species of Pacific Salmon of economic importance in Alaska: Chinook, Sockeye, Coho, Pink and Chum.

Policies

Federal management to State management

Anvik River chum salmon [1]
YearEscapementReturn
1972457,800362,587
1973249,015856,936
1974411,1331,338,657
1975900,967843,132
1976511,4752,926,444
1977358,7711,321,297
1900307,2701,187,305
1979280,537979,514
1980492,6761,744,558
19811,486,1822,779,191
1982444,581988,061
1983362,9121,220,480
1984891,0282,928,193
19851,080,2431,141,620
19861,189,6021,203,267
1987455,8761,480,599
19881,125,449628,815
1989636,9061,318,363
1990403,6271,300,412
1991847,7721,588,212
1992775,6261,233,719
1993517,409467,159

Alaska changed from federal management of its fisheries to state management in 1959. Alaska's constitution has an article regarding the management and utilization of the state's natural resources. Article VIII, Section 4 states: “Fish, forests, wildlife, grasslands, and all other replenishable resources belonging to the State shall be utilized, developed, and maintained on the sustained yield principle, subject to preferences among beneficial uses.” [1] The Alaska Department of Fish and Game was formed when Alaska became a state. While the Alaska Department of Fish and Game was formed with a strong conservation mandate to manage salmon fisheries for sustained yield, the Alaska Board of Fisheries, on the other hand, was given the responsibility for allocating that yield of salmon to users. [4] The clear separation of primary conservation authority from allocation authority is one of the strengths of the Alaskan fishery management system.

The dominant goal is the harvest policy known as “fixed escapement,” or ensuring that sufficient numbers of adult spawning salmon escape capture in the fishery and are allowed to spawn in the rivers, thus maintaining the long-term health of the stocks. Salmon managers open and close fisheries on a daily basis to ensure that adequate spawning escapements are achieved. When run failures occur, managers close fisheries to provide for predetermined escapement needs and therefore ensuring long-term sustainable yields. When run strength is strong, managers liberalize harvest regulations to utilize surpluses. Alaska's focused emphasis on in-season management by local biologists with delegated regulatory authority to ensure sustained yields is a key ingredient to successful salmon management. [3]

Limited Entry Act

Alaska has succeeded in sustainable yield management of its salmon fisheries since the enclosure of the salmon fishery in 1973 under a limited entry permit system. The Alaskan legislature adopted the Limited Entry Act, establishing the current limited entry system for the salmon fisheries. The Commercial Fisheries Entry Commission (CFEC) administers the commercial fishery entry permit system. The objective of the CFEC is to “limit entry into commercial fisheries and provide annual licensing and permitting of fisheries to facilitate the management and development of fishery resources for maximum benefit of those dependent upon them and the economy of the state.” [5] Some key features of the program are to prohibit permit leasing, prevent the use of permits as collateral for loans, and allow for free transferability. The Limited Entry law also defined entry permits as a use-privilege that can be modified by the legislature without compensation. Free transferability has resulted in maintaining high percentages of residents within Alaska's fisheries and has been upheld by Alaska's Supreme Court. They are a property right of the holder and may be sold, bought and are heritable. [5]

The limited entry permit system has been beneficial to Alaska's fisheries in several ways. Implementation of the Limited Entry Act protected Alaska's fisheries from an influx of new fishermen from West Coast fisheries where fishing opportunities have been severely reduced by court decisions and stock conditions. [5] Net economic benefits have accrued that may not have existed under open access. In reference to salmon populations, the permit system has been vastly successful in increasing populations (Figure 1). [6]

Alternative explanations

It is relatively clear that the reason for increased populations of salmon fisheries was the conversion to state management in 1959 and then the limited entry permit system in 1973. However, viable alternative explanations always exist.

The most important change that showed instant increases in salmon populations was the enactment of the Magnusson Stevens Act in 1976 that moved the jurisdiction of Alaskan waters out from 12 miles to the 200 mile limit, effectively excluding foreign fleets from fishing within these American waters. This and sustainable escapement goals that allowed salmon to reach their wild spawning river systems allowed the salmon to return and reproduce naturally so that wild systems recovered from the over fishing, creek robbing, and the serious cold winter temperatures of the early 1970s so prevalent leading to the recovery of stocks seen all over Alaska without any artificial propagation.

One explanation often used is the enhancement of salmon due to the start of the hatchery program in 1971. But the salmon began to recover long before hatcheries began releases in the late 1970s. Modern salmon hatcheries in Alaska were developed too late in response to record low wild-stock runs in the 1970s so millions of dollars were wasted in building these expensive infrastructures. Initially conceived as state-run systems, paid for with Alaska general fund dollars. Today most Alaskan hatcheries are now run by private non-profit organizations but are in grave controversy for their massive straying into wild streams and competition with wild stocks. [7] Alaska now has 33 production hatcheries in a program designed to enhance fisheries but is masking the maintenance of healthy wild stocks. Some hatcheries release over 100 million juvenile salmon annually, competing with the wild out migrating Smolt. Statewide totals are 1.2 to 1.4 billion annually over the last decade. During the past decade, hatcheries have produced 27-63 million adults annually, accounting for 14-37% of lower valued salmon in the statewide commercial salmon harvest. 40% of these salmon are only stripped for their eggs and the carcass thrown away. The high valued preferred wild sockeye are 66-86%, contributing to the majority of the value for the state of Alaska coming from the wild naturally spawning salmon (Figure 2). [8] These high percentages of wild salmon help show that the massive increase in salmon populations was due to the policies implemented during statehood and the entry of the limited permit system, as well as the Magnusson Stevens Act and the climatic shift favoring salmon. Therefore, the natural cycles and strict management to protect American waters is an alternative explanation to the recovering salmon population surge.

Stocks of concern

Kow-Ear-Nuk and salmon catch, early 1900s Kow-Ear-Nuk and his drying salmon.jpg
Kow-Ear-Nuk and salmon catch, early 1900s

The Alaskan Board of Fisheries identified six “stocks of concern” in late 2000, categorizing them as having yield concern. This is defined as “a chronic inability (over four to five years, despite use of specific management measures) to maintain yields or harvestable surplus above escapement needs.” [1]

Areas of concern

Yukon River

In 2001 commercial fishing of the Alaskan Portion of the Yukon River was closed, due to poor runs recorded in the previous years. [9] The 2006 Joint Technical Committee of the Yukon River US/Canada Panel documented the size and sex composition of Yukon River chinook salmon and found “limited, but suggestive” evidence that the fish morphology has changed. Specific findings included a decrease in the mean weight of commercial harvests, a reduction in the prevalence of the largest fish, and the apparent near disappearance of age-8 fish. [9] The committee also reported that mean length-at-age, another important metric, had not substantially changed. [9] In addition to changes in physical characteristics of Chinook salmon, a protozoan pathogen (Ichthyophonus sp.), not previously present in the Yukon River began appearing in increasing numbers of fish. First reported in 1988 [10] the parasite prevalence increased continually until it peaked at a 40% in 2003-2004. During this time it was reported that up to 60% of infected fish died before they could successfully spawn. [11] Beginning in 2004 the infection prevalence has decreased in parallel with a decrease in the Chinook population. [12] Causes of these changes, whether environmental or fishery-induced, were not clear and the committee found expanded monitoring was needed. [9]

Related Research Articles

Salmon Family of fish related to trout

Salmon is the common name for several species of ray-finned fish in the family Salmonidae. Other fish in the same family include trout, char, grayling, and whitefish. Salmon are native to tributaries of the North Atlantic and Pacific Ocean. Many species of salmon have been introduced into non-native environments such as the Great Lakes of North America and Patagonia in South America. Salmon are intensively farmed in many parts of the world.

Bristol Bay

Bristol Bay is the easternmost arm of the Bering Sea, at 57° to 59° North 157° to 162° West in Southwest Alaska. Bristol Bay is 400 km (250 mi) long and 290 km, (180 mi) wide at its mouth. A number of rivers flow into the bay, including the Cinder, Egegik, Igushik, Kvichak, Meshik, Nushagak, Naknek, Togiak, and Ugashik.

Gillnetting

Gillnetting is a fishing method that uses gill nets: vertical panels of netting that hang from a line with regularly spaced floaters that hold the line on the surface of the water. The floats are sometimes called "corks" and the line with corks is generally referred to as a "cork line." The line along the bottom of the panels is generally weighted. Traditionally this line has been weighted with lead and may be referred to as "lead line." A gillnet is normally set in a straight line. Gillnets can be characterized by mesh size, as well as colour and type of filament from which they are made. Fish may be caught by gill nets in three ways:

  1. Wedged – held by the mesh around the body.
  2. Gilled – held by mesh slipping behind the opercula.
  3. Tangled – held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh.
Chum salmon

The chum salmon is a species of anadromous fish in the salmon family. It is a Pacific salmon, and may also be known as dog salmon or keta salmon, and is often marketed under the name silverbrite salmon. The name chum salmon comes from the Chinook Jargon term tzum, meaning "spotted" or "marked", while keta in the scientific name comes from the Evenki language of Eastern Siberia via Russian.

Chinook salmon Species of fish

The Chinook salmon is the largest species of Pacific salmon as well as the largest in the genus Oncorhynchus. Its common name is derived from the Chinookan peoples. Other vernacular names for the species include king salmon, Quinnat salmon, spring salmon, chrome hog, and Tyee salmon. The scientific species name is based on the Russian common name chavycha (чавыча).

Sockeye salmon

The sockeye salmon, also called red salmon, kokanee salmon, or blueback salmon, is an anadromous species of salmon found in the Northern Pacific Ocean and rivers discharging into it. This species is a Pacific salmon that is primarily red in hue during spawning. They can grow up to 84 cm in length and weigh 2.3 to 7 kg (5–15 lb). Juveniles remain in freshwater until they are ready to migrate to the ocean, over distances of up to 1,600 km (1,000 mi). Their diet consists primarily of zooplankton. Sockeye salmon are semelparous, dying after they spawn. Some populations, referred to as kokanee, do not migrate to the ocean and live their entire lives in freshwater.

Coho salmon Species of fish

The coho salmon is a species of anadromous fish in the salmon family and one of the five Pacific salmon species. Coho salmon are also known as silver salmon or "silvers". The scientific species name is based on the Russian common name kizhuch (кижуч).

<i>Oncorhynchus</i>

Oncorhynchus is a genus of fish in the family Salmonidae; it contains the Pacific salmon and Pacific trout. The name of the genus is derived from the Greek ὄγκος + ῥύγχος, in reference to the hooked jaws of males in the mating season.

Baker River (Washington)

The Baker River is an approximately 30-mile (48 km), southward-flowing tributary of the Skagit River in northwestern Washington in the United States. It drains an area of the high North Cascades in the watershed of Puget Sound north of Seattle, and east of Mount Baker. With a watershed of approximately 270 square miles (700 km2) in a complex of deep valleys partially inside North Cascades National Park, it is the last major tributary of the Skagit before the larger river reaches its mouth on Skagit Bay. The river flows through Concrete, Washington, near its mouth and has two hydroelectric dams owned by Puget Sound Energy.

Fish wheel

A fish wheel, also known as a salmon wheel, is a device situated in rivers for catching fish which looks and operates like a watermill. However, in addition to paddles, a fish wheel is outfitted with wire baskets designed to catch and carry fish from the water and into a nearby holding tank. The current of the river presses against the submerged paddles and rotates the wheel, passing the baskets through the water where they intercept fish that are swimming or drifting. Naturally a strong current is most effective in spinning the wheel, so fish wheels are typically situated in shallow rivers with brisk currents, close to rapids, or waterfalls. The baskets are built at an outward-facing slant with an open end so the fish slide out of the opening and into the holding tank where they await collection. Yield is increased if fish swimming upstream are channeled toward the wheel by weirs.

The Alaska Department of Fish and Game (ADF&G) is a department within the government of Alaska. ADF&G's mission is to protect, maintain, and improve the fish, game, and aquatic plant resources of the state, and manage their use and development in the best interest of the economy and the well-being of the people of the state, consistent with the sustained yield principle. ADF&G manages approximately 750 active fisheries, 26 game management units, and 32 special areas. From resource policy to public education, the department considers public involvement essential to its mission and goals. The department is committed to working with tribes in Alaska and with a diverse group of State and Federal agencies. The department works cooperatively with various universities and nongovernmental organizations in formal and informal partnership arrangements, and assists local research or baseline environmental monitoring through citizen science programs.

This page is a list of fishing topics.

Fishing industry in the United States

As with other countries, the 200 nautical miles (370 km) exclusive economic zone (EEZ) off the coast of the United States gives its fishing industry special fishing rights. It covers 11.4 million square kilometres, which is the second largest zone in the world, exceeding the land area of the United States.

Aquaculture of salmonids

The aquaculture of salmonids is the farming and harvesting of salmonids under controlled conditions for both commercial and recreational purposes. Salmonids, along with carp, and tilapia are the three most important fish species in aquaculture. The most commonly commercially farmed salmonid is the Atlantic salmon. In the U.S. Chinook salmon and rainbow trout are the most commonly farmed salmonids for recreational and subsistence fishing through the National Fish Hatchery System. In Europe, brown trout are the most commonly reared fish for recreational restocking. Commonly farmed nonsalmonid fish groups include tilapia, catfish, sea bass, and bream.

Aquaculture in Alaska is dominated by the production of shellfish and aquatic plants. These include Pacific oysters, blue mussels, littleneck clams, scallops, and bull kelp. Finfish farming has been prohibited in Alaska by the 16.40.210 Alaskan statute, however non-profit mariculture continues to provide a steady supply of aquaculture in the state. Many organizations that helped the ban, now encourage the growing of shellfish and other oysters.

Salmon cannery

A salmon cannery is a factory that commercially cans salmon. It is a fish-processing industry that became established on the Pacific coast of North America during the 19th century, and subsequently expanded to other parts of the world that had easy access to salmon.

Pacific Salmon Commission

The Pacific Salmon Commission is a regulatory body run jointly by the Canadian and United States governments. Its mandate is to protect stocks of the five species of Pacific salmon. Its precursor was the International Pacific Salmon Fisheries Commission, which operated from 1937 to 1985. The PSC enforces the Pacific Salmon Treaty, ratified by Canada and the U.S. in 1985.

Environmental issues with salmon

Salmon population levels are of concern in the Atlantic and in some parts of the Pacific. Salmon are anadromous - they rear and grow in freshwater, migrate to the ocean to reach sexual maturity, and then return to freshwater to spawn. Determining how environmental stressors and climate change will affect these fisheries is challenging due to their lives split between fresh and saltwater. Environmental variables like warming temperatures and habitat loss are detrimental to salmon abundance and survival. Other human influenced effects on salmon like overfishing and gillnets, sea lice from farm raised salmon, and competition from hatchery released salmon have negative effects as well.

The Coast Salish people of the Canadian Pacific coast depend on salmon as a staple food source, as they have done for thousands of years. Salmon has also served as a source of wealth and trade and is deeply embedded in their culture, identity, and existence as First Nations people of Canada. Traditional fishing is deeply tied to Coast Salish culture and salmon were seen "as gift-bearing relatives, and were treated with great respect" since all living things were once people according to traditional Coast Salish beliefs. Salmon are seen by the Coast Salish peoples are beings similar to people but spiritually superior.

Pacific Salmon War 1990s fishing dispute between American and Canadian fishers

The Pacific Salmon War was a period of heightened tensions between Canada and the United States over the Pacific Salmon catch. It began in 1992 after the first Pacific Salmon Treaty, which had been ratified in 1985, expired, and lasted until a new agreement was signed in 1999. Disagreements were high in 1994, when a transit fee was set on American fishing vessels using the Inside Passage and a ferry was blockaded by fishing boats in Friday Harbor, Washington.

References

  1. 1 2 3 4 Ecotrust 2005, Policies Governing Alaska’s Salmon Management Archived 2007-09-27 at the Wayback Machine
  2. MSC 2019, Alaska Salmon - MSC Fisheries Archived 2007-09-27 at the Wayback Machine
  3. 1 2 3 Alaska Department of Fish and Games, 2003, ADF&G 2003, Alaska’s Salmon Management
  4. Alaskan Salmon Program 2005, Biocomplexity and Fisheries Sustainability Archived 2007-01-11 at the Wayback Machine
  5. 1 2 3 Commercial Fisheries Entry Commission, 2006, CFEC 2006, Fishing Communities: Harvesting the Future
  6. The State of Alaska, 2006, CFLEC 2003, Commercial Fisheries Limited Entry Commission Archived 2007-05-04 at the Wayback Machine
  7. "U.S. Department of Commerce, National Oceanic and Atmospheric Administration, NOAA 2002, Alaska Salmon Enhancement: A questionable Program for Hatchery and Wild Stocks". Archived from the original on 2007-04-28. Retrieved 2007-05-25.
  8. Long Live the Kings, 2006, LLTK 2006, Salmon Hatcheries in Alaska Archived 2007-10-08 at the Wayback Machine
  9. 1 2 3 4 Potential causes of size trends in Yukon River Chinook salmon populations (PDF), Joint Technical Committee of the Yukon River US/Canada Panel 2006, 2006
  10. Alaska Department of Fish and Game 1988, Fish Pathology Report 890026, Fish Pathology Section, Anchorage, AK
  11. Kocan, R. P.K. Hershberger, J. Winton 2004 Journal of Aquatic Animal Health 16: 58-72
  12. US and Canada Yukon River Joint Technical Committee. March 2010 Regional Information Report No. 3A10-01. Anchorage AK

See also