REDUCTION OF ECOLOGICAL FOOTPRINTS OF DRIFTING FISH AGGREGATING DEVICES (DFADS) USING DRONE TECHNOLOGY IN NIGERIAN OFFSHORE WATERS
Keywords:
Fisheries, Drone-assisted technology, Responsible fishing habitsAbstract
Drifting Fish Aggregating Devices (dFADs), which are used intensively in industrial tuna fisheries, have become widespread in West African waters. While effective in aggregating pelagic species such as tuna, dFADs have serious environmental consequences in the form of ghost fishing, marine pollution and disruption of ocean ecosystem processes. These challenges are further added to by dFADs drifting into Nigerian offshore waters from neighboring countries, increasing the difficulty of fisheries management and undermining conservation efforts. Existing mitigation efforts are limited by high cost, technology deficits, and weak enforcement capacity. This research examined the possibility of employing drone technology as an affordable and environmentally friendly means of mitigating the environmental impact of dFADs in Nigerian waters. Drone-assisted reconnaissance missions were conducted at three offshore locations — Brass, Escravos and Lagos — augmented by two locally adapted fishery boats. Utilization of drones enabled real-time identification, geolocation, and recovery of errant dFADs, which was more efficient and cost-effective compared to traditional retrieval. The results indicated that drone utilization reduced time and the impacts of uncontrolled dFAD drift, saving marine ecosystems. The research highlighted the need for regional cooperation among ECOWAS member states in the regulation of utilization, traceability and disposal of dFADs through shared surveillance platforms. The outcomes offer actionable suggestions to policymakers, fisheries stakeholders, and conservationists responsible for protecting the marine ecosystem in the Gulf of Guinea, in addition to promoting responsible fishing habits.
References
Armstrong, W. A., and Oliver, C. W. (1996). Recent use of fish aggregation devices in the Eastern Tropical Pacific Tuna purse-seine fishery: 1990–1994. Administrative Report L5-96-02, Southwest Fisheries Science Center, NOAA.
Bharam, V. (2004). Fish Aggregating Devices Information Sources. FAO: Information Documents BOBP/INF/2, Rome.
Dempster, T. and Taquet, M. (2004). Fish aggregation device (FAD) research: Gaps in current knowledge and future directions for ecological studies. Reviews in Fish Biology and Fisheries 14(1): 21–42.
Escalle, L., Phillips, J. S., Nicol, S., Pilling, G. M., Harley, S. and Brouwer, S. (2019). A novel approach to estimate the drifting FAD density and biomass of associated tuna in the Western and Central Pacific Ocean. Scientific Reports 9: 16675.
Floch, L., Molina, A. D. D., Assan, C., Dewals, P., Areso, J. J. and Chassot, E. (2012). Statistics of the European purse seine fishing fleet and associated flags targeting tropical tunas in the Indian Ocean (1981–2011). Working document for the Indian Ocean Tuna Commission (IOTC).
Fonteneau, A., Pallares, P. and Pianet, R. (2000). A worldwide review of purse seine fisheries on FADs. In J. Y. Le Gall, P. Cayré and M. Taquet (Eds.), Pêche thonière et dispositifs de concentration de poisons. Actes Colloques 28: 15–35.
Fromentin, J. M. and Fonteneau, A. (2001). Fishing effects and life history traits: A case study comparing tropical versus temperate tunas. Fisheries Research 53(2): 133–150.
Fulton, E. A., Smith, A. D. M., Smith, D. C. and Van Putten, I. E. (2011). Human behavior: The key source of uncertainty in fisheries management. Fish and Fisheries 12(1): 2–17.
Miyake, M. P., Guillotreau, P., Sun, C. H., and Ishimura, G. (2010). Recent development in the tuna industry: Stocks, fisheries, management, processing, trade and markets. FAO Fisheries and Aquaculture Technical Paper No. 543, Rome.
Peck, M. A., Reglero, P., Takahashi, M. and Catalán, I. A. (2013). Life cycle ecophysiology of smapelagic fish and climate-driven changes in populations Progress in Oceanography 116: 220–245. DOI: 10.1016/j.pocean.2013.05.012
Supta, A., Palling, G., Phillips, J. S., and Escalle, L. (2020). Tens of thousands of tuna-attracting devices are drifting around the Pacific. The Conversation.
