ISSN 1198-6727 INCOFISH ECOSYSTEM MODELS: TRANSITING FROM ECOPATH TO ECOSPACE Fisheries Centre Research Reports 2007 Volume 15 Number 6 ISSN 1198-6727 Fisheries Centre Research Reports 2007 Volume 15 Number 6 INCOFISH Ecosystem Models: Transiting from Ecopath to Ecospace Fisheries Centre, University of British Columbia, Canada INCOFISH Ecosystem Models: Transiting from Ecopath to Ecospace edited by Will J.F. Le Quesne, Francisco Arreguín-Sánchez and Sheila J.J. Heymans Fisheries Centre Research Reports 15 (6) 188 pages © published 2007 by The Fisheries Centre University of British Columbia 2202 Main Mall Vancouver, B.C., Canada, V6T 1Z4 ISSN 1198-6727 Fisheries Centre Research Reports 15 (6) 2007 INCOFISH ECOSYSTEM MODELS: TRANSITING FROM ECOPATH TO ECOSPACE edited by Will J.F. Le Quesne, Francisco Arreguín-Sánchez and Sheila J.J. Heymans CONTENTS Page DIRECTOR’S FOREWORD ...................................................................................................................................... 1 PREFACE .............................................................................................................................................................2 TROPHIC MODEL OF THE NORTHERN ADRIATIC SEA, AN EUTROPHIC AND HIGHLY EXPLOITED ECOSYSTEM, A. Barausse, A. Duci, C. Mazzoldi, Y. Artioli and L. Palmeri..................................................................3 Abstract .....................................................................................................................................................3 Introduction ..............................................................................................................................................3 Materials and Methods .............................................................................................................................3 Results .....................................................................................................................................................10 Discussion................................................................................................................................................ 11 Acknowledgements ................................................................................................................................. 12 References ............................................................................................................................................... 12 Appendix A ..............................................................................................................................................16 UPDATED ECOSYSTEM MODEL FOR THE NORTHERN BENGUELA ECOSYSTEM, NAMIBIA, S.J.J. Heymans and U.R. Sumaila ...........................................................................................................................................25 Abstract ...................................................................................................................................................25 Introduction ............................................................................................................................................25 Materials and Methods ...........................................................................................................................26 Model Fitting Results..............................................................................................................................57 Acknowledgements .................................................................................................................................63 References ...............................................................................................................................................63 Appendix A ............................................................................................................................................. 69 MODELLING THE FOOD WEB IN THE UPWELLING ECOSYSTEM OFF CENTRAL CHILE (33°S–39°S) IN THE YEAR 2000, S. Neira and H. Arancibia................................................................................................... 71 Abstract ................................................................................................................................................... 71 Introduction ............................................................................................................................................ 71 Methods...................................................................................................................................................72 References .............................................................................................................................................. 83 SPATIAL RESOURCES AND FISHERY MANAGEMENT FRAMEWORK IN THE EAST CHINA SEA, H.Q. Cheng, H. Jiang, H.G. Xu, J. Wu, H. Ding, W. Le Quesne and F. Arreguín-Sánchez ......................................87 Abstract ...................................................................................................................................................87 Introduction ............................................................................................................................................87 Spatial Characteristics of the ECS Ecosystem ....................................................................................... 88 Spatial Modelling of Fishery Management Scenarios in the ECS ..........................................................92 Acknowledgements ................................................................................................................................ 96 References .............................................................................................................................................. 96 Appendix A ............................................................................................................................................. 98 AN ECOSYSTEM SIMULATION MODEL OF THE NORTHERN GULF OF CALIFORNIA, D. Lercari, F. Arreguín- Sánchez and W. Le Quesne .................................................................................................................. 100 Abstract................................................................................................................................................. 100 Introduction.......................................................................................................................................... 100 Description of Model Components: Ecopath....................................................................................... 102 Description of Model Components: Ecosim ........................................................................................ 105 Description of Model Components: Ecospace ..................................................................................... 108 Conclusions............................................................................................................................................ 111 References.............................................................................................................................................. 112 MARINE ECOSYSTEM ANALYSES IN THE GULF OF ULLOA, MEXICO: BAC MEETS ECOPATH, P. del Monte-Luna, F. Arreguín-Sánchez and D. Lluch-Belda............................................................................................. 114 Abstract.................................................................................................................................................. 114 Introduction........................................................................................................................................... 114 Input Data and Ecosystem Characterization ........................................................................................118 The Ecosim Foundation.........................................................................................................................119 The Ecospace Foundation ..................................................................................................................... 121 Results....................................................................................................................................................123 Discussion..............................................................................................................................................127 Acknowledgements................................................................................................................................129 References..............................................................................................................................................129 Appendix A.............................................................................................................................................133 TROPHIC MODEL FOR THE ECOSYSTEM OF LA PAZ BAY, SOUTHERN BAJA CALIFORNIA PENINSULA, MEXICO, F. Arreguín-Sánchez, P. del Monte-Luna, J.G. Díaz-Uribe, M. Gorostieta, E.A. Chávez and R. Ronzón-Rodríguez.................................................................................................................................134 Abstract..................................................................................................................................................134 Introduction...........................................................................................................................................134