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OAR
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Office of Oceanic and Atmospheric Research (NOAA).
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observers
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Contractors sponsored by the federal government who observe and record fisheries onboard catch activity.
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ODFW
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Oregon Department of Fish and Wildlife.
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ODIN
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Official Documentation and Information from Norway.
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oligonucleotide
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A polymer chain of several nucleotides.
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Operations, Management, and Information Division
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One of six divisions under the Science Director's Office of the Northwest Fisheries Science Center. See also NWFSC.
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operculum
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Gill cover.
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organic
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Part of or derived from living organisms; also a chemical compound that contains carbon as an essential component. Compare inorganic.
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ORHAB
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Olympic region harmful algal bloom.
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otolith
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Ear bone of a fish. Otoliths often show seasonal or annual rings that can be used to determine age.
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outbreeding
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Mating individuals from different populations.
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over-consumption
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The use of resources at a rate that exceeds the ability of natural processes to replace them.
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OY
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Optimum yield. The amount of fish that: 1) will provide the greatest overall benefit to the nation, particularly with respect to food production and recreational opportunities, and taking into account the protection of marine ecosystems; 2) is prescribed on the basis of the maximum sustainable yield from the fishery, as reduced by any relevant economic, social, or ecological factors; and 3) in the case of an overfished fishery, provides for rebuilding to a level consistent with producing the MSY in such fishery.
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