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Social-Ecological Systems Meta-Analysis Database: Component

SummarySea cucumber (Isostichopus fuscus) inhabits rocky reefs in shallow coastal waters (2 - 40m depth) from the Gulf of California to Ecuador, and around many Pacific islands including the Galapagos.
SubtypeNatural Resource Unit
SectorMarine protected areas
Commons AggregationPopulation
ExplanationPopulation Brown sea cucumber (Isostichopus fuscus). Manged as region stocks as opposed to the archipelago stock as a whole.
Commons BoundariesClear boundaries (3)
ExplanationFound in the coastal zone at 28-39 m depth. http://www.fao.org/docrep/007/y5501e/y5501e0e.htm
Commons Indicator["Status of species targeted by fisheries"]
ExplanationThis species (Isostichopus fuscus) is the most common commercial species found in the Eastern Pacific (Maluf, 1988) and was once known as the most conspicuous invertebrate of the shallow littoral zone in the Galapagos Islands (Wellington, 1974).
Commons Unit SizeSmall (2)
ExplanationAdults 20-30cm, with suggested lifespan of 12-17 years.
Environmental MediumOceanic
ExplanationOceanic Shallow coastal waters (2-40m depth)
Inter Annual PredictabilityModerate (2)
ExplanationSea cucumbers are density-dependent for reproduction - and the minimum density required is unknown. They take approximately 4 years to mature. Recruitment rates vary due to climate and oceanic conditions (e.g. el nino)
Intra Annual PredictabilityHigh (3)
ExplanationWith no fishing, little variation in numbers within a given year Density-dependent for reproduction - and density required is unknown.
Commons RenewabilityRenewable (1)
ExplanationSea cucumbers are renewable, however exhibit very low reproductive and recruitment capacity. (Hearn et al., 2005)
ProductivityModerately Productive (2)
ExplanationSea cucumber fisheries are popular throughout the Indo-Pacific but are prone to over-exploitation. Coded as moderately productive, as their productivity could be considere higher than turtles or whales which have been coded as poorly prodcutive. Low sea cucumber densities do not allow for spawning aggregations necessary for high reproductive rates, resulting in low fertilization rates. Breeding success is directly related to densities of adult individuals, and stocks are consistently below legal threshold. (Hearn et al., 2005)
Commons AccessibilityVery accessible (3)
ExplanationSea cucumbers inhabit shallow coastal waters and are conspicuous and lsow moving making them accessible given a boat and diving equipment.
Commons HeterogeneityModerate (2)
Explanationfound in shallow coastal waters and distributed around all islands of the archipelago in varying densities.
Commons MobilityMedium (2)
ExplanationSea cucumbers are slowly mobile, with little movement of sea cucumbers between islands.
Commons Spatial Extent133000
Explanationcoded as the spatial extent of the GMR. Although Isostichopus fuscus is found across the Eastern Pacific http://www.fao.org/docrep/007/y5501e/y5501e0e.htm
Technical SubstituteNo