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Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea

Year 2022, Volume 37, Issue 1, 1 - 7, 01.01.2022
https://doi.org/10.26650/ASE2021963166

Abstract

By catch is a serious conservation challenge for the fisheries whose viability is increasingly under threat. To approach maximum by catch reduction with minimum loss of targeted catch, fisheries need to have information on the environmental and anthropogenic factors in multi species seas like the Mediterranean. In this study, we used generalized additive models (GAM) to by the catch ratio of purse seine fishery to determine the effects of environmental variables. The data were col-lected during each fishing trip in the 2018-2019 fishing season that covers the time period between September 1st and April 15th. There were 26 species (66.216 mt in total) recorded as by catch and the rates of by catch species in the total by catch amount varied between 0.001% and 23.1%. In terms of habitat of by catch species, the total ratios of benthopelagic, demersal and pelagic spe-cies were 52% , 28% and 20%, respectively. Significant interactions observed indicate that the fluc-tuations in by catch ratios differed by depth and sea surface temperature, whereas the quarters of year and the moon phases were not found to affect by catch ratios significantly.

References

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  • Arimoto, T., Glass, C. W., & Zhang, X. (2010). Fish Vision and Its Role in Fish Capture. In H. Pingguo (Ed.), Behavior of Marine Fishes: Capture Processes and Conservation Challenges (pp. 25–44). Ames, IOWA: Blackwell Publishing. google scholar
  • Bellido, J. M., Paradinas, I., Vilela, R., Bas, G., & Pennino, M. G. (2019). A Marine Spatial Planning Approach to Minimize Discards: Challenges and Opportunities of the Landing Obligation in European Waters. In S. S. Uhlmann, C. Ulrich, & S. J. Kennelly (Eds.), The European Landing Obligation (pp. 239–256). Cham: Springer International Publishing. google scholar
  • Casale, P. (2011). Sea turtle by-catch in the Mediterranean. Fish and Fisheries, 12(3), 299–316. google scholar
  • Colloca, F., Cardinale, M., Maynou, F., Giannoulaki, M., Scarcella, G., Jenko, K., Fiorentino, F. (2013). Rebuilding Mediterranean fisheries: A new paradigm for ecological sustainability. Fish and Fisheries, 14(1). google scholar
  • Cook, R. (2010). The magnitude and impact of by-catch mortality by fishing gear. In M. Sinclair & G. Valdimarrson (Eds.), Responsible fisheries in the marine ecosystem (pp. 219–234). CABI Publishing. google scholar
  • Dagorn, L., Filmalter, J. D., Forget, F., Amandè, M. J., Hall, M. A., Williams, P., Bez, N. (2012). Targeting bigger schools can reduce ecosystem impacts of fisheries. Canadian Journal of Fisheries and Aquatic Sciences, 69(9). google scholar
  • Demirel, N., Zengin, M., & Ulman, A. (2020). First Large-Scale Eastern Mediterranean and Black Sea Stock Assessment Reveals a Dramatic Decline. Frontiers in Marine Science, 7. google scholar
  • Dragesund, O. (1958). Reactions of fish to artificial light, with special reference to large herring and spring herring in norway. ICES Journal of Marine Science, 23(2), 213–227. google scholar
  • Dunn, D. C., Boustany, A. M., & Halpin, P. N. (2011). Spatio-temporal management of fisheries to reduce by-catch and increase fishing selectivity. Fish and Fisheries, 12(1), 110–119. google scholar
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  • Escalle, L., Pennino, M. G., Gaertner, D., Chavance, P., Delgado de Molina, A., Demarcq, H., Merigot, B. (2016). Environmental factors and megafauna spatio-temporal co-occurrence with purse-seine fisheries. Fisheries Oceanography, 25(4), 433–447. google scholar
  • Fonteneau, A., Pallarés, P., & Pianet, R. (2000). A worldwide review of purse seine fisheries on FADs. Pêche Thonière et Dispositifs de Concentration de Poissons, Caribbean-Martinique, 15-19 Oct 1999, (1), 15–35. google scholar
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  • Hastie, T. J., & Tibshirani, R. J. (1990). Generalized Additive Models, Monographs on Statistics and Applied Probability 43. Chapman & Hall (Vol. 9). google scholar
  • Hu, C., Harrison, D. P., Hinton, M. G., Siegrist, Z. C., & Kiefer, D. A. (2018). Habitat analysis of the commercial tuna of the Eastern Tropical Pacific Ocean. Fisheries Oceanography, 27(5), 417–434. google scholar
  • Jatmiko, G. G. (2015). Analysis of the effect of the month day period on catch results and mini purse seine business income in PPP Morodemak, Demak. Bogor Agricultural Institute, Bogor, Indonesia. google scholar
  • Lezama-Ochoa, N., Murua, H., Ruiz, J., Chavance, P., Delgado de Molina, A., Caballero, A., & Sancristobal, I. (2018). Biodiversity and environmental characteristics of the bycatch assemblages from the tropical tuna purse seine fisheries in the eastern Atlantic Ocean. Marine Ecology, 39(3), e12504. google scholar
  • Lleonart, J., & Maynou, F. (2003). Fish stock assessments in the Mediterranean: State of the art. Scientia Marina, 67(SUPPL 1), 37–49. google scholar
  • Mannocci, L., Forget, F., Tolotti, M. T., Bach, P., Bez, N., Demarcq, H., Dagorn, L. (2020). Predicting bycatch hotspots in tropical tuna purse seine fisheries at the basin scale. Global Ecology and Conservation, 24, e01393. google scholar
  • Marçalo, A., Katara, I., Feijo, D., Araujo, H., Oliveira, I., Santos, J., … Vingada, J. (2015). Quantification of interactions between the Portuguese sardine purse-seine fishery and cetaceans. ICES Journal of Marine Science, 72(8), 2438–2449. google scholar
  • Marçalo, A., Marques, T. A., Araújo, J., Pousão-Ferreira, P., Erzini, K., & Stratoudakis, Y. (2010). Fishing simulation experiments for predicting the effects of purse-seine capture on sardine (Sardina pilchardus). ICES Journal of Marine Science, 67(2), 334–344. google scholar
  • Martínez-Rincón, R. O., Ortega-García, S., & Vaca-Rodríguez, J. G. (2012). Comparative performance of generalized additive models and boosted regression trees for statistical modeling of incidental catch of wahoo (Acanthocybium solandri) in the Mexican tuna purse-seine fishery. Ecological Modelling, 233, 20–25. google scholar
  • Martinez-Rincon, R. O., Ortega-Garcia, S., Vaca-Rodriguez, J. G., & Griffiths, S. P. (2015). Development of habitat prediction models to reduce by-catch of sailfish (Istiophorus platypterus) within the purse-seine fishery in the eastern Pacific Ocean. Marine and Freshwater Research, 66(7), 644–653. google scholar
  • Maynou, F. (2020). Evolution of fishing capacity in a Mediterranean fishery in the first two decades of the 21st c. Ocean & Coastal Management, 192, 105190. google scholar
  • Minami, M., Lennert-Cody, C. E., Gao, W., & Román-Verdesoto, M. (2007). Modeling shark bycatch: The zero-inflated negative binomial regression model with smoothing. Fisheries Research, 84(2), 210–221. google scholar
  • Montero, J. T., Martinez-Rincon, R. O., Heppell, S. S., Hall, M., & Ewal, M. (2016). Characterizing environmental and spatial variables associated with the incidental catch of olive ridley ( Lepidochelys olivacea ) in the Eastern Tropical Pacific purse-seine fishery. Fisheries Oceanography, 25(1), 1–14. google scholar
  • Muñoz, F., Pennino, M. G., Conesa, D., López-Quílez, A., & Bellido, J. M. (2013). Estimation and prediction of the spatial occurrence of fish species using Bayesian latent Gaussian models. Stochastic Environmental Research and Risk Assessment, 27(5), 1171–1180. google scholar
  • Nguyen, K. Q., & Winger, P. D. (2019). Artificial Light in Commercial Industrialized Fishing Applications: A Review. Reviews in Fisheries Science & Aquaculture, 27(1), 106–126. google scholar
  • Norriss, J. V., Fisher, E. A., & Denham, A. M. (2020). Seabird bycatch in a sardine purse seine fishery. ICES Journal of Marine Science, 77(7–8), 2971–2983. google scholar
  • Pedersen, E. J., Miller, D. L., Simpson, G. L., & Ross, N. (2019). Hierarchical generalized additive models in ecology: an introduction with mgcv. PeerJ, 7, e6876. google scholar
  • Pet, J. S., Van Densen, W. L. T., Machiels, M. A. M., Sukkel, M., Setyohadi, D., & Tumuljadi, A. (1997). Catch, effort and sampling strategies in the highly variable sardine fisheries around East Java, Indonesia. Fisheries Research, 31(1–2), 121–137. google scholar
  • R Core Team. (2020). R: A language and environment for statistical computing. Retrieved from http://www.r-project.org/. google scholar
  • Şahin, C., Ceylan, Y., & Kalaycı, F. (2015). Purse seine fishery discards on the Black Sea coasts of Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 15(1). google scholar
  • Smith, A. D. M., & Garcia, S. M. (2014). Fishery Management: Contrasts in the Mediterranean and the Atlantic. Current Biology, 24(17), R810–R812. google scholar
  • Solomon, O. O., & Ahmed, O. O. (2016). Fishing with Light: Ecological Consequences for Coastal Habitats. International Journal of Fisheries and Aquatic Studies, 4(2), 474–483. Retrieved from http://ultramaxincorp.com/?p2=/modules/ultramax/catalog.jsp&id=2 google scholar
  • Suharyanto, Arifin, M. K., Hutajulu, J., Waluyo, A. S., Yusrizal, Handri, M., Sepri. (2020). The effect of moon phases upon purse seine pelagic fish catches in fisheries management area (Fma) 716, Indonesia. AACL Bioflux, 13(6), 3532–3541. google scholar
  • Tang, H., Xu, L., Wang, X., & Zhou, C. (2015). GAM applied to study the performance of tuna purse seine. In Advanced Engineering and Technology II - Proceedings of the 2nd Annual Congress on Advanced Engineering and Technology, CAET 2015 (pp. 351–356). google scholar
  • Tang, H., Xu, L., Zhou, C., Wang, X., Zhu, G., & Hu, F. (2017). The effect of environmental variables, gear design and operational parameters on sinking performance of tuna purse seine setting on free-swimming schools. Fisheries Research, 196, 151–159. google scholar
  • Teixeira, C. M., Gamito, R., Leitão, F., Murta, A. G., Cabral, H. N., Erzini, K., & Costa, M. J. (2016). Environmental influence on commercial fishery landings of small pelagic fish in Portugal. Regional Environmental Change, 16(3), 709–716. google scholar
  • Tsagarakis, K., Vassilopoulou, V., Kallianiotis, A., & Machias, A. (2012). Discards of the purse seine fishery targeting small pelagic fish in the eastern Mediterranean Sea. Scientia Marina, 76(3). google scholar Tsitsika, E. V, & Maravelias, C. D. (2006). Factors affecting purse seine catches: an observer-based analysis. Mediterranean Marine Science, 7(1), 27–40. google scholar
  • Tsitsika, E. V, & Maravelias, C. D. (2008). Fishing strategy choices of purse seines in the Mediterranean: implications for management. Fisheries Science, 74(1), 19–27. google scholar
  • TurkStat. (2021). Fishery Statistics. Retrieved February 3, 2021, from https://biruni.tuik.gov.tr/medas/?kn=97&locale=en google scholar
  • Tweedie, M. C. K. (1984). An index which distinguishes between some important exponential families. In Applications and New Directions—Proceedings of the Indian Statistical Institute Golden Jubilee International Conference. google scholar
  • Ulman, A., Zengin, M., Demirel, N., & Pauly, D. (2020). The Lost Fish of Turkey: A Recent History of Disappeared Species and Commercial Fishery Extinctions for the Turkish Marmara and Black Seas. Frontiers in Marine Science, 7. google scholar
  • Vasilakopoulos, P., Maravelias, C. D., & Tserpes, G. (2014). The Alarming Decline of Mediterranean Fish Stocks. Current Biology, 24(14), 1643–1648. google scholar
  • Wickham, H., Averick, M., Bryan, J., Chang, W., McGowan, L., François, R., Yutani, H. (2019). Welcome to the Tidyverse. Journal of Open Source Software. google scholar
  • Wood, S. N. (2003). Thin plate regression splines. Journal of the Royal Statistical Society. Series B: Statistical Methodology. google scholar
  • Wood, S. N. (2004). Stable and efficient multiple smoothing parameter estimation for generalized additive models. Journal of the American Statistical Association, 99(467). google scholar
  • Wood, S. N. (2017). Generalized additive models: An introduction with R, second edition. Generalized Additive Models: An Introduction with R, Second Edition. google scholar
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Year 2022, Volume 37, Issue 1, 1 - 7, 01.01.2022
https://doi.org/10.26650/ASE2021963166

Abstract

References

  • Alverson, D. L., Freeberg, M. H., Murawski, S. A., & Pope, J. G. (1994). A global assessment of fisheries bycatch and discards. FAO Fisheries Technical Paper. No. 339. FAO. Rome. google scholar
  • Anonymous. (2008). Management Plan For The Derogation of The Greek Purse Seine Fleet From The Provisions of Article 13 Of (EC) 1967/2006 Athens. Retrieved from https://stecf.jrc.ec.europa.eu/documents/43805/44928/Management+plan+English.pdf google scholar
  • Arcos, J. M., & Oro, D. (2002). Significance of nocturnal purse seine fisheries for seabirds: A case study off the Ebro Delta (NW Mediterranean). Marine Biology, 141(2), 277–286. google scholar
  • Arimoto, T., Glass, C. W., & Zhang, X. (2010). Fish Vision and Its Role in Fish Capture. In H. Pingguo (Ed.), Behavior of Marine Fishes: Capture Processes and Conservation Challenges (pp. 25–44). Ames, IOWA: Blackwell Publishing. google scholar
  • Bellido, J. M., Paradinas, I., Vilela, R., Bas, G., & Pennino, M. G. (2019). A Marine Spatial Planning Approach to Minimize Discards: Challenges and Opportunities of the Landing Obligation in European Waters. In S. S. Uhlmann, C. Ulrich, & S. J. Kennelly (Eds.), The European Landing Obligation (pp. 239–256). Cham: Springer International Publishing. google scholar
  • Casale, P. (2011). Sea turtle by-catch in the Mediterranean. Fish and Fisheries, 12(3), 299–316. google scholar
  • Colloca, F., Cardinale, M., Maynou, F., Giannoulaki, M., Scarcella, G., Jenko, K., Fiorentino, F. (2013). Rebuilding Mediterranean fisheries: A new paradigm for ecological sustainability. Fish and Fisheries, 14(1). google scholar
  • Cook, R. (2010). The magnitude and impact of by-catch mortality by fishing gear. In M. Sinclair & G. Valdimarrson (Eds.), Responsible fisheries in the marine ecosystem (pp. 219–234). CABI Publishing. google scholar
  • Dagorn, L., Filmalter, J. D., Forget, F., Amandè, M. J., Hall, M. A., Williams, P., Bez, N. (2012). Targeting bigger schools can reduce ecosystem impacts of fisheries. Canadian Journal of Fisheries and Aquatic Sciences, 69(9). google scholar
  • Demirel, N., Zengin, M., & Ulman, A. (2020). First Large-Scale Eastern Mediterranean and Black Sea Stock Assessment Reveals a Dramatic Decline. Frontiers in Marine Science, 7. google scholar
  • Dragesund, O. (1958). Reactions of fish to artificial light, with special reference to large herring and spring herring in norway. ICES Journal of Marine Science, 23(2), 213–227. google scholar
  • Dunn, D. C., Boustany, A. M., & Halpin, P. N. (2011). Spatio-temporal management of fisheries to reduce by-catch and increase fishing selectivity. Fish and Fisheries, 12(1), 110–119. google scholar
  • Dunn, P. K., & Smyth, G. K. (2005). Series evaluation of Tweedie exponential dispersion model densities. Statistics and Computing, 15(4). google scholar
  • Escalle, L., Pennino, M. G., Gaertner, D., Chavance, P., Delgado de Molina, A., Demarcq, H., Merigot, B. (2016). Environmental factors and megafauna spatio-temporal co-occurrence with purse-seine fisheries. Fisheries Oceanography, 25(4), 433–447. google scholar
  • Fonteneau, A., Pallarés, P., & Pianet, R. (2000). A worldwide review of purse seine fisheries on FADs. Pêche Thonière et Dispositifs de Concentration de Poissons, Caribbean-Martinique, 15-19 Oct 1999, (1), 15–35. google scholar
  • Foster, S. D., & Bravington, M. V. (2013). A Poisson-Gamma model for analysis of ecological non-negative continuous data. Environmental and Ecological Statistics, 20(4). google scholar
  • Froese, R., & Pauly, D. (2019). FishBase. World Wide Web electronic publication. Retrieved from www.fishbase.org, version (12/2019). google scholar
  • Gonçalves, J. M. S., Bentes, L., Monteiro, P., Coelho, R., Corado, M., & Erzini, K. (2008). Reducing discards in a demersal purse-seine fishery. Aquatic Living Resources, 21(2), 135–144. google scholar
  • Guidetti, P., Bussotti, S., Pizzolante, F., & Ciccolella, A. (2010). Assessing the potential of an artisanal fishing co-management in the Marine Protected Area of Torre Guaceto (southern Adriatic Sea, SE Italy). Fisheries Research, 101(3). google scholar
  • Hall, M. A. (1996). On bycatches. Reviews in Fish Biology and Fisheries, 6(3). google scholar
  • Hall, M. A., Alverson, D. L., & Metuzals, K. I. (2000). By-Catch: Problems and Solutions. Marine Pollution Bulletin, 41(1–6), 204–219. google scholar
  • Hall, S. J., & Mainprize, B. M. (2005, June). Managing by-catch and discards: How much progress are we making and how can we do better? Fish and Fisheries. google scholar
  • Hastie, T. J., & Tibshirani, R. J. (1990). Generalized Additive Models, Monographs on Statistics and Applied Probability 43. Chapman & Hall (Vol. 9). google scholar
  • Hu, C., Harrison, D. P., Hinton, M. G., Siegrist, Z. C., & Kiefer, D. A. (2018). Habitat analysis of the commercial tuna of the Eastern Tropical Pacific Ocean. Fisheries Oceanography, 27(5), 417–434. google scholar
  • Jatmiko, G. G. (2015). Analysis of the effect of the month day period on catch results and mini purse seine business income in PPP Morodemak, Demak. Bogor Agricultural Institute, Bogor, Indonesia. google scholar
  • Lezama-Ochoa, N., Murua, H., Ruiz, J., Chavance, P., Delgado de Molina, A., Caballero, A., & Sancristobal, I. (2018). Biodiversity and environmental characteristics of the bycatch assemblages from the tropical tuna purse seine fisheries in the eastern Atlantic Ocean. Marine Ecology, 39(3), e12504. google scholar
  • Lleonart, J., & Maynou, F. (2003). Fish stock assessments in the Mediterranean: State of the art. Scientia Marina, 67(SUPPL 1), 37–49. google scholar
  • Mannocci, L., Forget, F., Tolotti, M. T., Bach, P., Bez, N., Demarcq, H., Dagorn, L. (2020). Predicting bycatch hotspots in tropical tuna purse seine fisheries at the basin scale. Global Ecology and Conservation, 24, e01393. google scholar
  • Marçalo, A., Katara, I., Feijo, D., Araujo, H., Oliveira, I., Santos, J., … Vingada, J. (2015). Quantification of interactions between the Portuguese sardine purse-seine fishery and cetaceans. ICES Journal of Marine Science, 72(8), 2438–2449. google scholar
  • Marçalo, A., Marques, T. A., Araújo, J., Pousão-Ferreira, P., Erzini, K., & Stratoudakis, Y. (2010). Fishing simulation experiments for predicting the effects of purse-seine capture on sardine (Sardina pilchardus). ICES Journal of Marine Science, 67(2), 334–344. google scholar
  • Martínez-Rincón, R. O., Ortega-García, S., & Vaca-Rodríguez, J. G. (2012). Comparative performance of generalized additive models and boosted regression trees for statistical modeling of incidental catch of wahoo (Acanthocybium solandri) in the Mexican tuna purse-seine fishery. Ecological Modelling, 233, 20–25. google scholar
  • Martinez-Rincon, R. O., Ortega-Garcia, S., Vaca-Rodriguez, J. G., & Griffiths, S. P. (2015). Development of habitat prediction models to reduce by-catch of sailfish (Istiophorus platypterus) within the purse-seine fishery in the eastern Pacific Ocean. Marine and Freshwater Research, 66(7), 644–653. google scholar
  • Maynou, F. (2020). Evolution of fishing capacity in a Mediterranean fishery in the first two decades of the 21st c. Ocean & Coastal Management, 192, 105190. google scholar
  • Minami, M., Lennert-Cody, C. E., Gao, W., & Román-Verdesoto, M. (2007). Modeling shark bycatch: The zero-inflated negative binomial regression model with smoothing. Fisheries Research, 84(2), 210–221. google scholar
  • Montero, J. T., Martinez-Rincon, R. O., Heppell, S. S., Hall, M., & Ewal, M. (2016). Characterizing environmental and spatial variables associated with the incidental catch of olive ridley ( Lepidochelys olivacea ) in the Eastern Tropical Pacific purse-seine fishery. Fisheries Oceanography, 25(1), 1–14. google scholar
  • Muñoz, F., Pennino, M. G., Conesa, D., López-Quílez, A., & Bellido, J. M. (2013). Estimation and prediction of the spatial occurrence of fish species using Bayesian latent Gaussian models. Stochastic Environmental Research and Risk Assessment, 27(5), 1171–1180. google scholar
  • Nguyen, K. Q., & Winger, P. D. (2019). Artificial Light in Commercial Industrialized Fishing Applications: A Review. Reviews in Fisheries Science & Aquaculture, 27(1), 106–126. google scholar
  • Norriss, J. V., Fisher, E. A., & Denham, A. M. (2020). Seabird bycatch in a sardine purse seine fishery. ICES Journal of Marine Science, 77(7–8), 2971–2983. google scholar
  • Pedersen, E. J., Miller, D. L., Simpson, G. L., & Ross, N. (2019). Hierarchical generalized additive models in ecology: an introduction with mgcv. PeerJ, 7, e6876. google scholar
  • Pet, J. S., Van Densen, W. L. T., Machiels, M. A. M., Sukkel, M., Setyohadi, D., & Tumuljadi, A. (1997). Catch, effort and sampling strategies in the highly variable sardine fisheries around East Java, Indonesia. Fisheries Research, 31(1–2), 121–137. google scholar
  • R Core Team. (2020). R: A language and environment for statistical computing. Retrieved from http://www.r-project.org/. google scholar
  • Şahin, C., Ceylan, Y., & Kalaycı, F. (2015). Purse seine fishery discards on the Black Sea coasts of Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 15(1). google scholar
  • Smith, A. D. M., & Garcia, S. M. (2014). Fishery Management: Contrasts in the Mediterranean and the Atlantic. Current Biology, 24(17), R810–R812. google scholar
  • Solomon, O. O., & Ahmed, O. O. (2016). Fishing with Light: Ecological Consequences for Coastal Habitats. International Journal of Fisheries and Aquatic Studies, 4(2), 474–483. Retrieved from http://ultramaxincorp.com/?p2=/modules/ultramax/catalog.jsp&id=2 google scholar
  • Suharyanto, Arifin, M. K., Hutajulu, J., Waluyo, A. S., Yusrizal, Handri, M., Sepri. (2020). The effect of moon phases upon purse seine pelagic fish catches in fisheries management area (Fma) 716, Indonesia. AACL Bioflux, 13(6), 3532–3541. google scholar
  • Tang, H., Xu, L., Wang, X., & Zhou, C. (2015). GAM applied to study the performance of tuna purse seine. In Advanced Engineering and Technology II - Proceedings of the 2nd Annual Congress on Advanced Engineering and Technology, CAET 2015 (pp. 351–356). google scholar
  • Tang, H., Xu, L., Zhou, C., Wang, X., Zhu, G., & Hu, F. (2017). The effect of environmental variables, gear design and operational parameters on sinking performance of tuna purse seine setting on free-swimming schools. Fisheries Research, 196, 151–159. google scholar
  • Teixeira, C. M., Gamito, R., Leitão, F., Murta, A. G., Cabral, H. N., Erzini, K., & Costa, M. J. (2016). Environmental influence on commercial fishery landings of small pelagic fish in Portugal. Regional Environmental Change, 16(3), 709–716. google scholar
  • Tsagarakis, K., Vassilopoulou, V., Kallianiotis, A., & Machias, A. (2012). Discards of the purse seine fishery targeting small pelagic fish in the eastern Mediterranean Sea. Scientia Marina, 76(3). google scholar Tsitsika, E. V, & Maravelias, C. D. (2006). Factors affecting purse seine catches: an observer-based analysis. Mediterranean Marine Science, 7(1), 27–40. google scholar
  • Tsitsika, E. V, & Maravelias, C. D. (2008). Fishing strategy choices of purse seines in the Mediterranean: implications for management. Fisheries Science, 74(1), 19–27. google scholar
  • TurkStat. (2021). Fishery Statistics. Retrieved February 3, 2021, from https://biruni.tuik.gov.tr/medas/?kn=97&locale=en google scholar
  • Tweedie, M. C. K. (1984). An index which distinguishes between some important exponential families. In Applications and New Directions—Proceedings of the Indian Statistical Institute Golden Jubilee International Conference. google scholar
  • Ulman, A., Zengin, M., Demirel, N., & Pauly, D. (2020). The Lost Fish of Turkey: A Recent History of Disappeared Species and Commercial Fishery Extinctions for the Turkish Marmara and Black Seas. Frontiers in Marine Science, 7. google scholar
  • Vasilakopoulos, P., Maravelias, C. D., & Tserpes, G. (2014). The Alarming Decline of Mediterranean Fish Stocks. Current Biology, 24(14), 1643–1648. google scholar
  • Wickham, H., Averick, M., Bryan, J., Chang, W., McGowan, L., François, R., Yutani, H. (2019). Welcome to the Tidyverse. Journal of Open Source Software. google scholar
  • Wood, S. N. (2003). Thin plate regression splines. Journal of the Royal Statistical Society. Series B: Statistical Methodology. google scholar
  • Wood, S. N. (2004). Stable and efficient multiple smoothing parameter estimation for generalized additive models. Journal of the American Statistical Association, 99(467). google scholar
  • Wood, S. N. (2017). Generalized additive models: An introduction with R, second edition. Generalized Additive Models: An Introduction with R, Second Edition. google scholar
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Details

Primary Language English
Subjects Science
Journal Section Research Articles
Authors

Tevfik CEYHAN> (Primary Author)
EGE ÜNİVERSİTESİ, SU ÜRÜNLERİ FAKÜLTESİ, SU ÜRÜNLERİ AVLAMA VE İŞLEME TEKNOLOJİSİ BÖLÜMÜ, AVLAMA TEKNOLOJİSİ ANABİLİM DALI
0000-0002-4799-5709
Türkiye


Zafer TOSUNOĞLU>
EGE ÜNİVERSİTESİ, SU ÜRÜNLERİ FAKÜLTESİ
0000-0002-1168-9611
Türkiye

Supporting Institution Tubitak
Project Number 118O317
Thanks We would like to thanks to Süleyman and Anıl Canbaz owners and skippers of the purse seiner Afala and Mehmet Aksoy Head of the Aegean Region Purse Seine Fishers Association.
Publication Date January 1, 2022
Application Date July 6, 2021
Acceptance Date September 3, 2021
Published in Issue Year 2022, Volume 37, Issue 1

Cite

Bibtex @research article { ase963166, journal = {Aquatic Sciences and Engineering}, issn = {2602-473X}, eissn = {2602-473X}, address = {}, publisher = {Istanbul University}, year = {2022}, volume = {37}, number = {1}, pages = {1 - 7}, doi = {10.26650/ASE2021963166}, title = {Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea}, key = {cite}, author = {Ceyhan, Tevfik and Tosunoğlu, Zafer} }
APA Ceyhan, T. & Tosunoğlu, Z. (2022). Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea . Aquatic Sciences and Engineering , 37 (1) , 1-7 . DOI: 10.26650/ASE2021963166
MLA Ceyhan, T. , Tosunoğlu, Z. "Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea" . Aquatic Sciences and Engineering 37 (2022 ): 1-7 <https://dergipark.org.tr/en/pub/ase/issue/65488/963166>
Chicago Ceyhan, T. , Tosunoğlu, Z. "Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea". Aquatic Sciences and Engineering 37 (2022 ): 1-7
RIS TY - JOUR T1 - Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea AU - Tevfik Ceyhan , Zafer Tosunoğlu Y1 - 2022 PY - 2022 N1 - doi: 10.26650/ASE2021963166 DO - 10.26650/ASE2021963166 T2 - Aquatic Sciences and Engineering JF - Journal JO - JOR SP - 1 EP - 7 VL - 37 IS - 1 SN - 2602-473X-2602-473X M3 - doi: 10.26650/ASE2021963166 UR - https://doi.org/10.26650/ASE2021963166 Y2 - 2021 ER -
EndNote %0 Aquatic Sciences and Engineering Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea %A Tevfik Ceyhan , Zafer Tosunoğlu %T Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea %D 2022 %J Aquatic Sciences and Engineering %P 2602-473X-2602-473X %V 37 %N 1 %R doi: 10.26650/ASE2021963166 %U 10.26650/ASE2021963166
ISNAD Ceyhan, Tevfik , Tosunoğlu, Zafer . "Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea". Aquatic Sciences and Engineering 37 / 1 (January 2022): 1-7 . https://doi.org/10.26650/ASE2021963166
AMA Ceyhan T. , Tosunoğlu Z. Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea. Aqua Sci Eng. 2022; 37(1): 1-7.
Vancouver Ceyhan T. , Tosunoğlu Z. Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea. Aquatic Sciences and Engineering. 2022; 37(1): 1-7.
IEEE T. Ceyhan and Z. Tosunoğlu , "Relationship Between by Catch Ratio of Sardine-Anchovy Targeted Purse Seine and Some Environmental Factors Based on a General Addictive Model in the Aegean Sea", Aquatic Sciences and Engineering, vol. 37, no. 1, pp. 1-7, Jan. 2022, doi:10.26650/ASE2021963166

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