Evaluation of the “fishing down marine food web” process in the north-west of Persian Gulf (Khuzestan Province) during the period of 2002–2011

Abstract

The worldwide increase in commercial fisheries and its impact on ecosystems as well as inefficient fishery management have led to overfishing and frequent breakdown of traditional fish stocks. In this context, an analysis of Khuzestan inshore fisheries data covering the years 2002–2011, was conducted in reliance on testing for occurrence of the fishing down marine food webs (FDMFW) phenomenon in the North of Persian Gulf Large Marine Ecosystem (LME). In this study, the mean trophic level (mTL) and the fishing-in-balance (FIB)-index of Khuzestan landings during this period of time were estimated using the trophic level of 47 fishery resources. Increase in total landings (Y) was observed, which explained the high fishing yield in major fishery resources (especially demersal). Moreover, the moderates decreasing trend in mTL per decade, and the increasing trend in FIB-index were observed. The status of fishery resources in Khuzestan inshore waters (under exploited but not overexploited), the rise in Y, FIB and slightly drop in mTL can be considered as indirect indicators of the fishing impacts on the trophic structure of marine communities. Based on this result, probability occurrence of FDMFW process in Khuzestan inshore waters is low to some extent. However, we suggest that the goal of management programs in Khuzestan inshore waters should prevent the continuance of this trend in the long-term using an ecosystem-based approach.

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References

  1. Bhathal B, Pauly D. 2008. ‘Fishing down marine food webs’ and spatial expansion of coastal fisheries in India, 1950–2000. Fisheries Research, 91(1): 26–34

    Article  Google Scholar 

  2. Caddy J F, Csirke J, Garcia S M, et al. 1998. How pervasive is ‘Fishing down marine food webs’?. Science, 282(5393): 1383–1383

    Article  Google Scholar 

  3. Caddy J F, Garibaldi L. 2000. Apparent changes in the trophic composition of world marine harvests: the perspective from the FAO capture database. Ocean and Coastal Management, 43(8–9): 615–655

    Article  Google Scholar 

  4. CBD. 2004. Annex I, decision VII/30. The 2020 biodiversity target: a framework for implementation. In: Decisions from the Seventh Meeting of the Conference of the Parties of the Convention on Biological Diversity, Kuala Lumpur, 9–10 and 27 February 2004. Montreal: Secretariat of the CBD

  5. Christensen V, Pauly D. 1992. ECOPATH II—a software for balancing steady-ecosystem models and calculating network characteristics. Ecological Modelling, 61(3–4): 169–185

    Article  Google Scholar 

  6. Christensen V. 1998. Fishery-induced changes in a marine ecosystem: insight from models of the Gulf of Thailand. Fish Biology, 53(Suppl A): 128–142

    Google Scholar 

  7. Cortés E. 1999. Standardized diet compositions and trophic levels of sharks. ICES Journal of Marine Science, 56(5): 707–717

    Article  Google Scholar 

  8. Fonteneau A. 1998. Atlas of Tropical Tuna Fisheries. Paris: Edition ORSTOM, 192

    Google Scholar 

  9. Froese R, Pauly D. 2000. FishBase 2000: Concepts, Design and Data Sources. Los Baños, Laguna, Philippines: ICLARM

    Google Scholar 

  10. Hall S J. 1999. The Effects of Fishing on Marine Ecosystems and Communities. Oxford: Blackwell Science

    Google Scholar 

  11. Hoseini N S A, Mohammadi G, Eskandary G, et al. 2012. Determination of economic and non-economic species, shrimp trawl net in north-west of Persian gulf (Khuzestan Provinces). International Journal of Fisheries and Aquatic Sciences, 1(2): 129–133

    Google Scholar 

  12. ICES. 2000. Report of the Working Group on Ecosystem Effects of Fishing Activities. ICES, Copenhagen, ICES CM2000/ACME: 02 Ref: ACFM + E, 93

  13. Milessi A C, Arancibia H, Neira S, et al. 2005. The mean trophic level of Uruguayan landings during the period 1990–2001. Fisheries Research, 74(1–3): 223–231

    Article  Google Scholar 

  14. Milessi A C, Defeo O. 2002. Long-term impact of incidental catches by tuna longlines: the black escolar (Lepidocybium flavobrunneum) of the southwestern Atlantic Ocean. Fisheries Research, 58(2): 203–213

    Article  Google Scholar 

  15. Myers A R, Worm B. 2003. Rapid worldwide depletion of predatory fish communities. Nature, 423(6937): 280–283

    Article  Google Scholar 

  16. Odum W E, Heald E J. 1975. The detritus-based food web of an estuarine mangrove community. In: Cronin L E, ed. Estuarine Research, Vol. 1. New York: Academic Press, 265–286

    Google Scholar 

  17. Pauly D, Christensen V. 1995. Primary production required to sustain global fisheries. Nature, 374(6519): 255–257

    Article  Google Scholar 

  18. Pauly D, Christensen V, Dalsgaard J, et al. 1998. Fishing down marine food webs. Science, 279(5352): 860–863

    Article  Google Scholar 

  19. Pauly D, Christensen V, Guénette S, et al. 2002. Towards sustainability in world fisheries. Nature, 418(6898): 689–695

    Article  Google Scholar 

  20. Pauly D, Christensen V, Walters C. 2000. Ecopath, ecosim, and ecospace as tools for evaluating ecosystem impact of fisheries. ICES Journal of Marine Science, 57(3): 697–706

    Article  Google Scholar 

  21. Pauly D, Graham W, Libralato S, et al. 2009. Jellyfish in ecosystem online databases and ecosystem models. Hydrobiology, 616(1): 67–85

    Article  Google Scholar 

  22. Pauly D, Palomares M L. 2005. Fishing down marine food web: it is far more pervasive than we thought. Bulletin of Marine Science, 76(2): 197–212

    Google Scholar 

  23. Pauly D, Palomares M L, Froese R, et al. 2001. Fishing down Canadian aquatic food webs. Canadian Journal of Fisheries and Aquatic Sciences, 58(1): 51–62

    Article  Google Scholar 

  24. Pauly D, Watson R. 2005. Background and interpretation of the ‘Marine Trophic Index’ as a measure of biodiversity. Philosophical Transactions of the Royal Society B Biological Sciences, 360(1454): 415–423

    Article  Google Scholar 

  25. Sala E, Aburto-Oropeza O, Reza M, et al. 2004. Fishing down coastal food webs in the Gulf of California. Fisheries, 29(3): 19–25

    Article  Google Scholar 

  26. Shadi A, Mediseh S D, Gandom Y, et al. 2011. Stock assessment of juvenile fishes of khuzestan shallow waters (North Persian Gulf), Iran. Middle-East Journal of Scientific Research, 8(3): 616–619

    Google Scholar 

  27. Stergiou C. 2002. Overfishing, tropicalization of fish stocks, uncertainly and ecosystem management: reshapening Ochkam’s razor. Fisheries Research, 55: 1–9

    Article  Google Scholar 

  28. Stergiou K I, Koulouris M. 2000. Fishing down the marine food webs in the Hellenic seas. Fishing down the Mediterranean food webs?. In: Durand F, ed. Proceedings of a CIESM workshop held in Kerkyra, Greece, 26–30

    Google Scholar 

  29. July, 2000. CIESM Workshop Series, No. 12, 73–78

  30. Stevens J D, Bonfil R, Dulvy N K, et al. 2000. The effects of fishing on sharks, rays, and chimaeras (Chondrichthians), and the implications for marine ecosystems. ICES Journal of Marine Science, 57(3): 476–494

    Article  Google Scholar 

  31. Tchernia P. 1980. Descriptive Regional Oceanography. 1st ed. Oxford: Pergamon Press, 253

    Google Scholar 

  32. Willemse N E, Pauly D. 2004. Reconstruction and interpretation of marine fisheries catches from Namibian waters, 1950 to 2000. In: Sumaila U R, Boyer D, Skog M, et al., eds. Namibia's Fisheries: Ecological, Economic and Social Aspects. The Netherlands: Eburon, 99–112

    Google Scholar 

  33. Zwanenburg K C T, Bowen D, Bundy A, et al. 2002. Decadal changes in the Scotian shelf large marine ecosystem. In: Sherman K, Skjoldal H R, eds. Large Marine Ecosystem of North America, Changing States and Sustainability. Amsterdam: Elsevier Science, 105–150

    Google Scholar 

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Correspondence to Sakineh Mashjoor.

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Mashjoor, S., Kamrani, E. Evaluation of the “fishing down marine food web” process in the north-west of Persian Gulf (Khuzestan Province) during the period of 2002–2011. Acta Oceanol. Sin. 34, 103–110 (2015). https://doi.org/10.1007/s13131-015-0726-4

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Keywords

  • mean trophic level
  • fishing-in-balance index
  • fishing down marine food webs
  • Khuzestan
  • Persian Gulf