{"title":"Temporal variability of economic fish assemblage of the Northern Bay of Bengal in relation to its environment","authors":"Sachinandan Dutta, S. Paul","doi":"10.22034/IJI.V8I2.516","DOIUrl":null,"url":null,"abstract":"The Northern Bay of Bengal (NBoB) contributes largely towards the fish production of India and its neighboring countries. A pioneering attempt was made to understand temporal variability of the fish assemblage (exclusively to those of fisheries interest) of the NBoB (20°20ʹ–21°30ʹN and 87°30ʹ–89°E) in relation to sea surface temperature (SST) (°C), sea surface salinity (SSS), and chlorophyll-a (Chl- a ) (mg/l) changes. Between 2006 and 2015, the inter-annual variations of SST, SSS, and Chl- a were minor. Seasonal variability of SST, SSS, and Chl- a was observed and a yearly bi-modal peak of Chl- a production was evident. Inter-annual variability of the species dominance (D) was most plausibly explained by the SST*Chl- a (Δ AIC = 0) model. Variation of evenness index (J) was explained most plausibility by the Chl- a (Δ AIC = 0) model. Seasonal variability of SST and Chl- a levels, possibly influence the fish community of the NBoB, therefore, a regular monitoring programme is suggested for understanding the long-term changes of the fish assemblage of the NBoB.","PeriodicalId":14599,"journal":{"name":"Iranian Journal of Ichthyology","volume":"8 1","pages":"104-113"},"PeriodicalIF":0.0000,"publicationDate":"2021-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Journal of Ichthyology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22034/IJI.V8I2.516","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
The Northern Bay of Bengal (NBoB) contributes largely towards the fish production of India and its neighboring countries. A pioneering attempt was made to understand temporal variability of the fish assemblage (exclusively to those of fisheries interest) of the NBoB (20°20ʹ–21°30ʹN and 87°30ʹ–89°E) in relation to sea surface temperature (SST) (°C), sea surface salinity (SSS), and chlorophyll-a (Chl- a ) (mg/l) changes. Between 2006 and 2015, the inter-annual variations of SST, SSS, and Chl- a were minor. Seasonal variability of SST, SSS, and Chl- a was observed and a yearly bi-modal peak of Chl- a production was evident. Inter-annual variability of the species dominance (D) was most plausibly explained by the SST*Chl- a (Δ AIC = 0) model. Variation of evenness index (J) was explained most plausibility by the Chl- a (Δ AIC = 0) model. Seasonal variability of SST and Chl- a levels, possibly influence the fish community of the NBoB, therefore, a regular monitoring programme is suggested for understanding the long-term changes of the fish assemblage of the NBoB.
期刊介绍:
Iranian Journal of Ichthyology (IJI) is a peer-reviewed journal for publication of high quality papers on any aspect of ichthyology and will be published 4 times a year by the Iranian Society of Ichthyology (http://www.isi-org.ir). The journal welcomes the submission of manuscripts that meets the general criteria of significance and scientific excellence, and will publish original scientific articles in the fields of ichthyology. The editors welcome the submission of original manuscripts including Research Articles, Short communications, and Views & News. Review papers by distinguished authors and Special Issues will also be considered. It is our aim to provide the international scientific community with an efficiently published journal, meeting high scientific and technical standards. Scopes of Iranian Journal of Ichthyology includes: Systematics, taxonomy, morphology, anatomy, biogeography, biodiversity, conservation, ecology and general biology of fishes (reproduction, food and feeding habits, age and growth, population dynamics, etc.). Papers on freshwater, brackish, marine and fossil fishes will be considered.