Habitat suitability modelling for sardine Sardina pilchardus in a highly diverse ecosystem: The Mediterranean Sea

Marine Ecology Progress Series

Volumn 443, Issue , 2011, Pages 181-205

  Tugores, Pilar ^a   Giannoulaki, Marianna ^b   Iglesias, Magdalena ^a   Bonanno, Angelo ^c   Tičina, Vjekoslav ^d   Leonori, Iole ^e   MacHias, Athanassios ^b   Tsagarakis, Konstantinos ^b   Díaz, Núria ^a   Giráldez, Ana ^f   Patti, Bernando ^c   De Felice, Andrea ^e   Basilone, Gualtiero ^c   Valavanis, Vasilis ^b  

^a Centro Oceanográfico de Baleares   (Spain)

^b INSTITUTE OF OCEANOGRAPHY   (Greece)

^c CNR   (Italy)

^d INSTITUTE OF OCEANOGRAPHY AND FISHERIES   (Croatia)

^e CNR   (Italy)

^f Centro Oceanográfico de Málaga   (Spain)

Author keywords

Habitat suitability modeling; Mediterranean Sea; Potential spawning habitat; Sardine; Sardine potential habitat; Small pelagic

Indexed keywords

ACOUSTIC DATA; BATHYMETRY; CLUPEOID; DATA SET; ECOLOGICAL MODELING; FEEDING; HABITAT SELECTION; HABITAT STRUCTURE; MIGRATION; MODEL VALIDATION; NUMERICAL MODEL; PELAGIC ENVIRONMENT; POPULATION DISTRIBUTION; SATELLITE IMAGERY; SEA SURFACE TEMPERATURE; SEASONALITY; SPATIOTEMPORAL ANALYSIS; SPAWNING GROUND;

MEDITERRANEAN SEA; SPAIN;

SARDINA PILCHARDUS;

EID: 84555208107     PISSN: 01718630     EISSN: None     Source Type: Journal    
DOI: 10.3354/meps09366     Document Type: Article

References (116)

1. Abad R, Miquel J, Iglesias M, Ávarez F (1998) Acoustic estimation of abundance and distribution of sardine in the northwestern Mediterranean. Fish Res 34: 239-245
2. Agenbag JJ, Richardson AJ, Demarcq H, Fréon P, Weeks S, Shillington FA (2003) Estimating environmental preferences of South African pelagic fish species using catch size- and remote sensing data. Prog Oceanogr 59: 275-300
3. Alcamo J, Moreno JM, Nováky B, Bindi M and others (2007) Europe. In: Parry ML, Canziani OF, Palutikof JP, van der Linden PJ, Hanson CE (eds) Climate change 2007: impacts, adaptation and vulnerability. Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, p 541-580
4. Allain G, Petitgas P, Lazure P, (2001) The influence of mesoscale ocean processes on anchovy (Engraulis encrasicolus) recruitment in the Bay of Biscay estimated with a three-dimensional hydrodynamic model. Fish Oceanogr 10: 151-163
5. Anonymous (2009) Informe resultados campaña MEDIAS 0609. Iglesias M (ed) March 2010 Internal report. Instituto Español de Oceanografía, Madrid
6. Artegiani A, Bregant D, Paschini E, Pinardi N, Raicich F, Russo A (1997) The Adriatic Sea general circulation. Part I: air-sea interactions and water mass structure. J Phys Oceanogr 27:1492-1514
7. Austin MP (2002) Spatial prediction of species distribution: an interface between ecological theory and statistical modelling. Ecol Model 157: 101-118
8. Bakun A (1996) Patterns in the ocean: ocean processes and marine population dynamics. California Sea Grant College System and Centro de Investigaciones Biológicas de Noroeste, La Paz, México
9. Barale V, Jaquet JM, Ndiaye M (2008) Algal blooming patterns and anomalies in the Mediterranean Sea as derived from the SeaWiFS data set (1998-2003). Remote Sens Environ 112: 3300-3313
10. Barange M, Coetzee J, Takasuka A, Hill K, Gutierrez M, Oozeki Y, van der Lingen C, Agostini V (2009) Habitat expansion and contraction in anchovy and sardine populations. Prog Oceanogr 83: 251-260
11. Barange M, Field JG, Harris RP, Hofmann EE, Perry RI, Werner FE (2010) Marine ecosystems and global change. Oxford University Press, New York, NY
12. Bariche M, Alwan N, El-Fadel M (2006) Structure and biological characteristics of purse seine landings off the Lebanese coast (eastern Mediterranean). Fish Res 82: 246-252
13. Bariche M, Sadek R, Al-Zein MS, El-Fadel M (2007) Diversity of juvenile fish assemblages in the pelagic waters of Lebanon (eastern Mediterranean). Hydrobiologia 580: 109-115
14. Barry S, Elith J (2006) Error and uncertainty in habitat models. J Appl Ecol 43: 413-423
15. Basilone G, Guisande C, Patti B, Mazzola S, Cuttitta A, Bonanno A, Vergara AR, Maneiro I (2006) Effect of habitat conditions on reproduction of the European anchovy (Engraulis encrasicolus) in the Strait of Sicily. Fish Oceanogr 15: 271-280
16. Bedairia A, Djebar AB (2009) A preliminary analysis of the state of exploitation of the sardine, Sardina pilchardus (Walbaum, 1792), in the gulf of Annaba, East Algerian. Anim Biodiversity Conserv 32: 89-99
17. Behringer DW, Xue Y (2004) Evaluation of the global ocean data assimilation system at NCEP: the Pacific Ocean. 8th Symp Integrated Observing and Assimilation Systems for Atmosphere, Oceans, and Land Surface. Proc 84th Annu Meeting Am Meteorol Soc. American Meteorologi- cal Society, Boston, MA, p11-15
18. Bellido JM, Pierce GJ, Wang J (2001) Modelling intraannual variation in abundance of squid Loligo forbesi in Scottish waters using generalised additive models. Fish Res 52: 23-39
19. Bellido JM, Brown AM, Valavanis VD, Girádez A, Pierce GJ, Iglesias M, Palialexis A (2008) Identifying essential fish habitat for small pelagic species in Spanish Mediterranean waters. Hydrobiologia 612: 171-184
20. Bellier E, Planque B, Petitgas P (2007) Historical fluctuations in spawning location of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) in the Bay of Biscay during 1967-73 and 2000-2004. Fish Oceanogr 16: 1-15
21. Ben Abdallah L, Gaamour A (2005) Répartition géographique et estimation de la biomasse des petits pélagiques des côtes tunisiennes. MedSudMed Tech Doc 5: 28-38
22. Bernal M, Stratoudakis Y, Coombs S, Angelico MM and others (2007) Sardine spawning off the European Atlantic coast: characterization of and spatio-temporal variability in spawning habitat. Prog Oceanogr 74: 210-227
23. Bertrand A, Gerlotto F, Bertrand S, Gutiérrez M and others (2008) Schooling behaviour and environmental forcing in relation to anchoveta distribution: an analysis across multiple spatial scales. Prog Oceanogr 79: 264-277
24. Bigot JL (2007) Stock assessment form regarding Sardina pilchardus in the Gulf of Lions (GSA07). Working paper, 8th Meeting of the Working Group on Small Pelagic Species, Sub-Committee on Stock Assessment, Scientific Advisory Committee. General Fisheries Commission for the Mediterranean, Athens
25. Bosc E, Bricaud A, Antoine D (2004) Seasonal and interannual variability in algal biomass and primary production in the Mediterranean Sea, as derived from 4 years of SeaWiFS observations. Global Biogeochem Cycles 18: GB1005 doi: 10. 1029/ 2003 GB 002034
26. Boyce MS, Vernier PR, Nielsen SE, Schmiegelow FKA (2002) Evaluating resource selection functions. Ecol Model 157: 281-300
27. Castro LR, Fréon P, van der Lingen CD, Uriarte A (2005) Report of the SPACC meeting on small pelagic fish spawning habitat dynamics and the daily egg production method (DEPM). GLOBEC Report 22. GLOBEC International Project Office, Plymouth
28. Champalbert G (1996) Characteristics of zooplankton standing stock and communities in the Western Mediterranean Sea: relations to hydrology. Sci Mar 60(Suppl 2): 97-113
29. Chilès JP, Delfiner P (1999) Geostatistics: modelling spatial uncertainty, 2nd edn. Wiley Series in Probability and Statistics. John Wiley, New York, NY
30. Coetzee JC, van der Lingen CD, Hutchings L, Fairweather TP (2008) Has the fishery contributed to a major shift in the distribution of South African sardine- ICES J Mar Sci 65: 1676-1688
31. Coll M, Shannon LJ, Moloney CL, Palomera I, Tudela S (2006) Comparing trophic flows and fishing impacts of a NW Mediterranean ecosystem with coastal upwelling systems by means of standardized models and indicators. Ecol Model 198: 53-70
32. Colloca F, Bartolino V, Lasinio GJ, Maiorano L, Sartor P, Ardizzone G (2009) Identifying fish nurseries using density and persistence measures. Mar Ecol Prog Ser 381: 287-296
33. Cury P, Bakun A, Crawford RJM, Jarre A, Quiñones R, Shannon LJ, Verheye HM (2000) Small pelagics in upwelling systems: patterns of interaction and structural changes in 'wasp-waist' ecosystems. ICES J Mar Sci 57: 603-618
34. Cuttitta A, Carini V, Patti B, Bonanno A and others (2003) Anchovy egg and larval distribution in relation to biological and physical oceanography in the Strait of Sicily. Hydrobiologia 503: 117-120
35. Diniz-Filho JAF, Bini LM, Hawkins BA (2003) Spatial autocorrelation and red herrings in geographical ecology. Glob Ecol Biogeogr 12: 53-64
36. Djabali F, Boudraa S, Bouhdid A, Bousbia H and others (1991) Travaux realises sur les stocks pelagiques et demersaux de la region de Beni-saf. FAO Fish Rep 447: 160-170
37. El-Haweet A (2001) Catch composition and management of daytime purse seine fishery on the Southern Mediterranean Sea Coast, Abu Qir Bay, Egypt. Mediterr Mar Sci 2: 119-126
38. Elith J, Graham CH, Anderson RP, Dudík M and others (2006) Novel methods improve prediction of species' distributions from occurrence data. Ecography 29: 129-151
39. ESRI (Environmental Systems Research Institute) (1994) ARC macro language. ESRI Press, Redlands, CA, p 3-37
40. Ettahiri O, Berraho AM, Vidy G, Ramdani M, Do Chi T (2003) Observations on the spawning of Sardina and Sardinella off the south Moroccan Atlantic coast (21-26°N). Fish Res 60: 207-222
41. FAO (Food and Agriculture Organization 2010) Fish Stat Plus: universal software for fishery statistical time series, Version 2.3. FAO Fisheries Department, Fishery Information, Data and Statistics Unit, Rome, www.fao.org/fishery/ statistics/ software/fishstat
42. Foote KG, Knudsen HP, Vestnes G, MacLennan DN, Simmonds EJ (1987) Calibration of acoustic instruments for fish density estimation: a practical guide. ICES Coop Res Rep 144
43. Fortin MJ, Dale MRT (2005) Spatial analysis: a guide for ecologists. Cambridge University Press, Cambridge
44. Franklin J (2009) Mapping species distributions. Spatial inference and prediction. Cambridge University Press, New York, NY
45. Furnestin J, Furnestin ML (1959) La reproduction de la sardine et de l'anchois des côtes Atlantiques de Maroc (saisons et aires de ponte). Rev Trav Inst Pêch Marit 23: 79-104
46. Ganias K (2009) Linking sardine spawning dynamics to environmental variability. Estuar Coast Shelf Sci 84: 402-408
47. Ganias K, Somarakis S, Koutsikopoulos C, Machias A (2007) Factors affecting the spawning period of sardine in two highly oligotrophic Seas. Mar Biol 151: 1559-1569
48. García A, Cortés D, Ramírez T, Guisande C and others(2006) Field comparison of sardine post-flexion larval growth and biochemical composition from three sites in the W Mediterranean (Ebro river coast, bays of Almería and Máaga). Sci Mar 70(Suppl 2): 79-91
49. Giannoulaki M, Machias A, Valavanis V, Somarakis S, Palialexis A, Tsagarakis K, Papaconstantinou C (2007) Spatial modeling of the European sardine habitat in the Eastern Mediterranean basin using GIS tools. Proc 38th CIESM Congress. Rapp Comm Int Mer Mediter 38: 486
50. Giannoulaki M, Valavanis VD, Palialexis A, Tsagarakis K, Machias A, Somarakis S, Papaconstantinou C (2008) Modelling the presence of anchovy Engraulis encrasicolus in the Aegean Sea during early summer, based on satellite environmental data. Hydrobiologia 612: 225-240
51. Giannoulaki M, Pyrounaki MM, Liorzou B, Leonori I and others (2011) Habitat suitability modelling for sardine (Sardina pilchardus) juveniles in the Mediterranean Sea. Fish Oceanogr 20:367-382
52. Gücü AC, Ok M, Sakman S (2010) Past and present of fish fauna in the NE Levant Sea and factors facilitating the colonization of Lessepsian fishes. FAO-EastMed Tech Doc 4: 88-108
53. Guennegan Y, Liorzou B, Bigot JL (2000) Exploitation des petites pelagique dans le Golf du Lion et suivi de l'evolution des stocks par echo-integration de 1999 a 2000. 1st Session of the Working Group on Small Pelagic Species, Sub-Committee for Stock Assessment, Scientific Advisory Committee. General Fisheries Commission for the Mediterranean, Rome
54. Guisan A, Zimmermann NE (2000) Predictive habitat distribution models in ecology. Ecol Model 135: 147-186
55. Guisan A, Edwards TC Jr, Hastie T (2002) Generalized linear and generalized additive models in studies of species distributions: setting the scene. Ecol Model 157: 89-100
56. Hanley JA, McNeil BJ (1982) The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology 143: 29-36
57. Hastie T, Tibshirani R (1990) Generalized additive models. Chapman & Hall, London
58. IglesiasM, Miquel J, Oñate D, Giraldez A, Díaz N, Tugores P (2006) ECOMED acoustic surveys: methodology, results and scope. 8th Session of the Working Group on Small Pelagic Species, Sub-Committee for Stock Assessment, Scientific Advisory Committee. General Fisheries Commission for the Mediterranean, Rome
59. Isari S, Ramfos A, Somarakis S, Koutsikopoulos C, Kallianiotis A, Fragopoulu N (2006) Mesozooplankton distribution in relation to hydrology of the Northeastern Aegean Sea, Eastern Mediterranean. J Plankton Res 28: 241-255
60. Jiménez-Valverde A, Lobo JM, Hortal J (2008) Not as good as they seem: the importance of concepts in species distribution modelling. Diversity Distrib 14: 885-890
61. Katsanevakis S, Maravelias CD, Damalas D, Karageorgis AP, Tsitsika EV, Anagnostou C, Papaconstantinou C (2009) Spatiotemporal distribution and habitat use of commercial demersal species in the eastern Mediterranean Sea. Fish Oceanogr 18: 439-457
62. Koslow JA (2009) The role of acoustics in ecosystem-based fishery management. ICES J Mar Sci 66: 966-973
63. Leathwick JR, Elith J, Francis MP, Hastie T, Taylor P (2006) Variation in demersal fish species richness in the oceans surrounding New Zealand: an analysis using boosted regression trees. Mar Ecol Prog Ser 321: 267-281
64. Lejeusne C, Chevaldonné P, Pergent-Martini C, Boudou - resque CF, Pérez T (2010) Climate change effects on a miniature ocean: the highly diverse, highly im pacted Mediterranean Sea. Trends Ecol Evol 25: 250-260
65. Leonori I, Azzali M, De Felice A (2007) Assessment of small pelagic fish by acoustic methods in north western Adriatic Sea. Working Document, 8th Meeting of the Working Group on Small Pelagic Species, Sub-Committee on Stock Assessment, Scientific Advisory Committee. General Fisheries Commission for the Mediterranean, Athens
66. Lleonart J, Maynou F (2003) Fish stock assessments in the Mediterranean: state of the art. Sci Mar 67(Suppl 1): 37-49
67. Lobo JM, Jiménez-Valverde A, Real R (2008) AUC: a misleading measure of the performance of predictive distribution models. Glob Ecol Biogeogr 17: 145-151
68. Lynn RJ (2003) Variability in the spawning habitat of Pacific sardine (Sardinops sagax) off southern and central California. Fish Oceanogr 12: 541-553
69. Machias A, Stergiou KI, Somarakis S, Karpouzi VS, Kapantagakis A (2008) Trends in trawl and purse seine catch rates in the north-eastern Mediterranean. Mediterr Mar Sci 9: 49-65
70. Mackinson S, Nøttestad L, Guénette S, Pitcher T, Misund OA, Fernö A (1999) Cross-scale observations on distribution and behavioural dynamics of ocean feeding Norwegian spring-spawning herring (Clupea harengus L.). ICES J Mar Sci 56: 613-626
71. Marini M, Jones BH, Campanelli A, Grilli F, Lee CM (2008) Seasonal variability and Po River plume influence on biochemical properties along western Adriatic coast. J Geophys Res 113: C05S90
72. Millot C (1990) The Gulf of Lions' hydrodynamics. Cont Shelf Res 10: 885-894
73. Morello EB, Arneri E (2009) Anchovy and sardine in the Adriatic Sea-an ecological review. Oceanogr Mar Biol Annu Rev 47: 209-256
74. Olivar MP, Catalán IA, Emelianov M, Fernández de Puelles ML (2003) Early stages of Sardina pilchardus and environmental anomalies in the Northwestern Mediterranean. Estuar Coast Shelf Sci 56: 609-619
75. Palomera I, Olivar MP, Salat J, Sabatés A, Coll M, García A, Morales-Nin B (2007) Small pelagic fish in the NW Medi - terranean Sea: an ecological review. Prog Oceanogr 74: 377-396
76. Patti B, Bonanno A, Basilone G, Goncharov S and others (2004) Interannual fluctuations in acoustic biomass estimates and in landings of small pelagic fish populations in relation to hydrology in the Strait of Sicily. Chem Ecol 20: 365-375
77. Patti B, Guisande C, Bonanno A, Basilone G, Cuttitta A, Mazzola S (2010) Role of physical forcings and nutrient availability on the control of satellite-based chlorophyll a concentration in the coastal upwelling area of the Sicilian Channel. Sci Mar 74: 577-588
78. Pauly D, Christensen V, Walters C (2000) Ecopath, Ecosim, and Ecospace as tools for evaluating ecosystem impact of fisheries. ICES J Mar Sci 57: 697-706
79. Pérez de Rubín J (1996) El ictioplancton del mar de Alborán. Relación de su distribución espacio-temporal y composición, con diferentes variables ambientales y con la distribución de los peces adultos. PhD thesis, University of Máaga
80. Phillips SJ, Anderson RP, Schapire RE (2006) Maximum entropy modeling of species geographic distributions. Ecol Model 190: 231-259
81. Planque B, Bellier E, Lazure P (2007) Modelling potential spawning habitat of sardine (Sardina pilchardus) and anchovy (Engraulis encrasicolus) in the Bay of Biscay. Fish Oceanogr 16: 16-30
82. Pujol MI, Larnicol G (2005) Mediterranean sea eddy kinetic energy variability from 11 years of altimetric data. J Mar Syst 58: 121-142
83. R Development Core Team (2009) R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna. Available online at www.R-project.org
84. Ramzi A, Hbid ML, Ettahiri O (2006) Larval dynamics and recruitment modelling of the Moroccan Atlantic coast sardine (Sardina pilchardus). Ecol Model 197: 296-302
85. Regner S, Regner D, Marasovi I, Kršini F (1987) Spawning of sardine, Sardina pilchardus (Walbaum, 1972), in the Adriatic under upwelling conditions. Acta Adriat 28: 161-198
86. Romanelli M, Giovanardi O (2000) A special fishery aimed at advanced larvae of Sardina pilchardus (Walbaum) along the northwestern and central western coasts of Italy: a general report. Biol Mar Mediterr 7: 158-172
87. Romanelli M, Colloca F, Giovanardi O (2002) Growth and mortality of exploited Sardina pilchardus (Walbaum) larvae along the western coast of Italy. Fish Res 55: 205-218
88. Russo A, Coluccelli A, Iermano I, Falcieri F and others (2009) An operational system for forecasting hypoxic events in the northern Adriatic Sea. Geofizika 26: 191-213
89. Sacau M, Pierce GJ, Wang J, Arkhipkin AI and others (2005) The spatio-temporal pattern of Argentine shortfin squid Illex argentinus abundance in the southwest Atlantic. Aquat Living Resour 18: 361-372
90. Segurado P, Araújo MB, Kunin WE (2006) Consequences of spatial autocorrelation for niche-based models. J Appl Ecol 43: 433-444
91. SGMED (Subgroup on the Mediterranean Sea) (2009) Report of the SGMED-09-02 working group on the Medi - terranean Part I. Scientific, Technical and Economic Committee for Fisheries. European Commission, Luxembourg
92. SGMED (2010) Report of the SGMED-10-02 working group on the Mediterranean Part I. Scientific, Technical and Economic Committee for Fisheries. European Commission, Luxembourg
93. Simmonds J, MacLennan D (2005) Fisheries acoustics, theory and practice, 2nd edn. Blackwell Publishing, Oxford
94. Sinovčić G (2001) Biotic and abiotic factors influencing sardine, Sardina pilchardus (Walb.) abundance in the Croatian part of the Eastern Adriatic. AdriaMed Tech Doc 3: 82-86
95. Smith WHF, Sandwell DTS (1997) Global sea floor topography from satellite altimetry and ship depth soundings. Science 277: 1956-1962
96. Somarakis S, Nikolioudakis N (2007) Oceanographic habitat, growth and mortality of larval anchovy (Engraulis encrasicolus) in the northern Aegean Sea (eastern Mediterranean). Mar Biol 152: 1143-1158
97. Somarakis S, Drakopoulos P, Filippou V (2002) Distribution and abundance of larval fish in the northern Aegean Sea-eastern Mediterranean-in relation to early summer oceanographic conditions. J Plankton Res 24: 339-357
98. Somarakis S, Ganias K, Siapatis A, Koutsikopoulos C, Machias A, Papaconstantinou C (2006) Spawning habitat and daily egg production of sardine (Sardina pilchardus) in the eastern Mediterranean. Fish Oceanogr 15: 281-292
99. Stratoudakis Y, Coombs S, de Lanzós AL, Halliday N and others (2007) Sardine (Sardina pilchardus) spawning seasonality in European waters of the northeast Atlantic. Mar Biol 152: 201-212
100. Tetko IV (2002) Neural network studies. 4. Introduction to associative neural networks. J Chem Inf Comput Sci 42: 717-728
101. Tičina V, Ka čić I, Cetinić P (1999) Two-boat mid-water trawling on the northern Adriatic Sea. In: Ceronik E, Swiniarski J (eds) Proc Int Symp Responsible Fisheries & Fishing Techniques, Ínsko, 16-19 June 1999. Faculty of Food Sciences and Fisheries, University of Agriculture, Szczecin, p 267-274
102. Tičina V, Ivan čić I, Emrić V (2000) Relation between the hydrographic properties of the northern Adriatic Sea water and sardine (Sardina pilchardus) population schools. Period Biol 102(Suppl 1): 181-192
103. Tičina V, Katavić I, Dadić V, Marasović I and others (2006) Acoustic estimates of small pelagic fish stocks in the eastern part of Adriatic Sea. Biol Mar Mediterr 13: 124-136
104. Tsagarakis K, Machias A, Somarakis S, Giannoulaki M, Palialexis A, Valavanis VD (2008) Habitat discrimination of juvenile sardines in the Aegean Sea using remotely sensed environmental data. Hydrobiologia 612: 215-223
105. Twatwa NM, van der Lingen CD, Drapeau L, Moloney CL, Field JG (2005) Characterising and comparing the spawning habitats of anchovy Engraulis encrasicolus and sardine Sardinops sagax in the southern Benguela upwelling ecosystem. Afr J Mar Sci 27: 487-499
106. Valavanis VD, Georgakarakos S, Kapantagakis A, Palialexis A, Katara I (2004) A GIS environmental modeling approach to essential fish habitat designation. Ecol Model 178: 417-427
107. Valavanis VD, Pierce GJ, Zuur AF, Palialexis A, Saveliev A, Katara I, Wang J (2008) Modelling of essential fish habitat based on remote sensing, spatial analysis and GIS. Hydrobiologia 612: 5-20
108. van der Lingen CD, Hutchings L, Merkle D, van der Westhuizen JJ, Nelson J (2001) Comparative spawning habitats of anchovy (Engraulis capensis) and sardine (Sardinops sagax) in the southern Benguela upwelling ecosystem. In: Kruse GH, Bez N, Booth A, Dorn MW and others (eds) Spatial processes and management of marine populations. University of Alaska Sea Grant, Fairbanks, p 185-209
109. Vargas-Yáñez M, Sabatés A (2007) Mesoscale high-frequency variability in the Alboran Sea and its influence on fish larvae distributions. J Mar Syst 68: 421-438
110. Weber ED, McClatchie S (2010) Predictive models of northern anchovy Engraulis mordax and Pacific sardine Sardinops sagax spawning habitat in the California Current. Mar Ecol Prog Ser 406: 251-263
111. Woillez M, Rivoirard J, Petitgas P (2009) Notes on surveybased spatial indicators for monitoring fish populations. Aquat Living Resour 22: 155-164
112. Wood SN (2006) Generalized additive models, an introduction with R. Chapman & Hall, London
113. Zarrad R, Missaoui H, Alemany F, Hamza A and others (2008) Distribution and abundance of early life stages of Sardina pilchardus in the Gulf of Tunis (Central Mediterranean Sea) in relation to environmental and biological factors. Sci Mar 72: 299-309
114. Zervakis V, Georgopoulos D (2002) Hydrology and circulation in the North Aegean Sea throughout 1997 and 1998. Mediter Mar Sci 3: 5-19
115. Zwolinski JP, Oliveira PB, Quintino V, Stratoudakis Y (2010) Sardine potential habitat and environmental forcing off western Portugal. ICES J Mar Sci 67
116. Zwolinski JP, Emmet RL, Demer DA (2011) Predicting habitat to optimize sampling of Pacific sardine (Sardinops sagax). ICES J Mar Sci 68: 867-879