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Social-Ecological Systems Meta-Analysis Database: Component

SummaryCalifornia market squid (Loligo opalescens) is found from Baja Mexico to Alaska, USA yet is managed by separate state departments.
SubtypeNatural Resource Unit
SectorFisheries (Stock-specific)
Commons AggregationPopulation
ExplanationOne population from Mexico to Alaska that spawns throughout the year (new cohort added almost monthly) (FMP 2005).
Commons BoundariesSomewhat unclear boundaries (2)
ExplanationThe range of market squid is from the southern tip of Baja California, Mexico (23° N latitude) to southeastern Alaska (55° N latitude). Juveniles and adults range throughout the California and Alaska Current systems (Roper and Sweeney 1984). Generally know historical grounds, but moves according to conditions.
Commons Indicator[""]
ExplanationEcosystem Health in terms of condition of ecosystem. Not strongly used as an indicator. But squid respond to temperature changes and so are somewhat used to describe temperature changes (e.g. ENSO, warm blob). Likely could be used to provide real-time monitoring of the ecosystem and serve as productivity integrators (Jackson and Domeier 2003).
Commons Unit SizeSmall (2)
ExplanationAverage mantle length is 152 mm at the time of spawning.
Environmental MediumOceanic
Inter Annual PredictabilityLow (1)
ExplanationVery difficult to determine, based on conditions.
Intra Annual PredictabilityModerate (2)
ExplanationRecruitment surveys help inform, but not always accurate.
Commons RenewabilityRenewable (1)
ExplanationReflective of environmental conditions. Reproduces quickly.
ProductivityVery productive (3)
Explanation"Mostly water" according to participants. However, high growth rate, mature early, and reproduce quickly (Jackson and Domeier 2003). The rapid ‘live-fast, die-young’ strategy of squid appears to be due to a unique combination of features that include: (1) efficient digestion coupled with a protein based metabolism; (2) sustaining continued growth using a combination of an increase in muscle fibre size (hypertrophy) along with continual recruitment of new muscle fibres (hyperplasia); (3) efficient use of oxygen and (4) low levels of antioxidative defence (Jackson and O’Dor 2001).
Commons AccessibilitySomewhat accessible (2)
ExplanationUse various technologies and fishing history to find. But sometimes completely not accessible (likely due to oceanic conditions, believe in warm waters squid migrate too deep to catch).
Commons HeterogeneityHigh (3)
ExplanationVery patchy (even referred to as patchy in the management plan).
Commons MobilityHigh (3)
ExplanationMigrate from Baja Mexico up to Alaska, though most spawning occurs in Southern and Central California (Vojkovich 1998). Also do daily vertical migrations.
Commons Spatial Extent900649
ExplanationFrom Baja Mexico to 55degrees North in Alaska, about 200 nm out from the coast 900,649km 2
Technical SubstituteNo