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dc.contributor.authorBagheri, S.
dc.coverage.spatialIranen_US
dc.coverage.spatialCaspian Seaen_US
dc.coverage.spatialGuilan Provinceen_US
dc.date.accessioned2018-03-06T12:11:53Z
dc.date.available2018-03-06T12:11:53Z
dc.date.issued2006
dc.identifier.issn1026-1354
dc.identifier.urihttp://hdl.handle.net/1834/12043
dc.description.abstractThe alien ctenophore Mnemiopsis leidyi which was transported from the Black Sea into the Caspian Sea by the end 1990s has since affected this new ecosystem. We studied the spatial and temporal distribution of the ctenophore from July 2001 to July 2002 in three transects located in Lisar, Bandar Anzali and Sefidroud, in Guilan province. Four stations were established in each transect at a 5, 10, 20 and 50 meter bottom depth contours. Maximum observed biomass of the organism was 221.3±91g1m2 in October 2001 and the minimum was 8.3±3.8g/m2 in December 2001. The highest biomass of the organism was detected in the upper 0-20m water layer in areas 50 meters deep achieving 145.36± 67.330112. The lowest biomass was in the 20 — 50 layers in areas 50 meters deep amounting to 1.9±0.95g1m2. Small specimens less than 10 mm comprised about 97% of the sampled population and the maximum length measured at 51-55mm. The largest average biomass was 112.3±48g/m2 detected in Lisar and the smallest biomass in the range 67.17±46.8g1m2 was seen in Anzali region. It was concluded that temperature, depth, salinity and food availability affected the distribution of Mnemiopsis leidyi in the sampled areas. It is also expected that the high biomass of the organism detected in the region may have significant effects on pelagic ecosystems of the Caspian Sea.en_US
dc.language.isofaen_US
dc.relation.urihttp://isfj.areo.ir/en_US
dc.subject.otherMnemiopsis leidyien_US
dc.subject.otherCtenophoreen_US
dc.titleAn investigation on abundance and distribution of Mnemiopsis leidyi in Guilan waters, southwest Caspian Seaen_US
dc.typeJournal Contributionen_US
dc.bibliographicCitation.issue4en_US
dc.bibliographicCitation.titleIranian Scientific Fisheries Journalen_US
dc.bibliographicCitation.volume14en_US
dc.description.statusPublisheden_US
dc.format.pagerangepp.1-16en_US
dc.subject.asfaDistributionen_US
dc.subject.asfaBiomassen_US
dc.subject.asfaAbundanceen_US
dc.type.refereedRefereeden_US
refterms.dateFOA2021-01-30T18:48:20Z


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