Impact of sand dredging on the coastal and artisanal fishing in estuary Sebou (Morocco)

ABSTRACT

Morocco has a consumption of over 30 million tonnes/year of sand and needs is increasing. In front, this major need a shortage settles pushing traders or sand consumers to seek this substance by dredging in estuarine and marine riparian areas. Thus, the action of dredging on the physicochemical and biological balance of the environment, and the performance of the fishery in the estuary and riparian maritime area should be constantly evaluated. In the present study, we evaluated the qualitative and quantitative performance of the fishery in the estuary of Sebou (Morocco) and its environment. The results show that since 2005 (the beginning period of the dredging operation) and until 2016, equal to equal effort and fishing area, the fishing performance continues to decline in quantity and quality. In addition, during this period, the medium is physically damaged; the water is bad to very bad. It is therefore very probably that this dredging of sand from the middle is the main cause of biodiversity degradation of the environment studied.

Key words:  Sebou Estuary, sand dredging, Fishing, Morocco

REFERENCES

1. Agence Nationale des Ports (ANP), (2014). In press. Libération, 10 Février 2014.
2. Amara R., Laffargue P., Dewarumez JM., Maryniak C., Lagardere F., Luczac C., (2001). J Fish Biol. 58: 788-803
3. Beyst, B., Hostens, K. & Mees, J., 2001. J. Sea Res. 46 : 281–294.
4. Desprez M. (1993). Ifremer, Groupe d'Etude des Milieux Estuariens et Littoraux.
5. Desprez M. (2008). Report. 22 p. Available at:http://fr.calameo.com/read/0025593520990efc9ec29    accessed in 15 February 2016.
6.  Porika Raju and Estari Mamidala (2015). Anti-diabetic activity of compound isolated from
   Physalis angulata fruit extracts in alloxan induced diabetic rats. The Ame J Sci & Med Res,
   2015,1(1); Pages 1 -6. doi:10.17812/ajsmr2015.11.1
7. Desprez M. (2012). Report of Union Nationale des producteurs de granulats Ref : NP-D1-12-G, 95p.
8. Drapor (2003). Central Dredging Association (CEDA) Africain Section, Ecole Hassania des Travaux Publics, 25-26 juin 2003, Casablanca.
9. Drapor, (2006). Référence Dragage & Environnement. Revue n°61, novembre- décembre.
10. Holley J.F. (2002). Ecole Nationale d’Agronomie de Rennes, 27p.
11. ICES. (2007). ICES Document CM 2007/MCH: 08, 96pp.
12. ICES. 2001. ICES Cooperative Research Report No. 247. 80 pp.
13. Ifremer, (2011)., Report, version du 09 Février 201, 12 pp.
14. Institut National de la Recherche Halieutique, (2015). Report, 210pp.
15. Institut Scientifique et Technique des Pêches Maritimes (ISTPM), (1981). Report Ref : BRGM!ISTPM n° 27-44-06, Nantes.
16. Kostecki C., LE PAPE O. (2011). Scientific Report. J. Agrocampus Ouest. 4, 7 p.
17. Le Pape O. (2005). Thesis. Université de Bretagne occidentale., Ifremer, Agrocampus, Rennes.
18. Massik Z. ; Idrissi L.J. & Zizah S. (2003). Seminar International, Central Dredging Association (CEDA), 25-26 juin 2003, Casablanca.
19. Morin J., Gilliers C., Schreiber N., Le Pape O., Amara R., Schlaich I., Cochard M.L., Bergeron J.P. (2001). Report of avril 2001. Available at: http://seine-aval.crihan.fr/web/attached_file/componentId/kmelia63/attachmentId/2949/lang/fr/name/04939566092001_Morin_Th4.pdf accessed in mars 2016.
20. SIEGMA (2009). Report, 86 pp.
21. Sogreah, (2011). Final Reprot N° 1712781. 73pp.
22. Westerberg, H., Ronnback, P., and Frimansson, H. 1996. ICES CM 1996/E: 26.