| | FISH COMMUNITY STRUCTURE AND THE SPATIAL AND TEMPORAL |
| | 3,54 | | MB | VARIABILITY IN RECRUITMENT AND BIOMASS PRODUCTION IN |
| | 378 | | stron | CHESAPEAKE BAY |
| | 6617 | | ID | University of Maryland |
| | 2002 | | rok |
| | TABLE OF CONTENTS |
| | LIST OF TABLES ix |
| | LIST OF FIGURES.xiv |
| | LIST OF ABBREVIATIONS xxii |
| | CHAPTER 1 |
| | Introduction 1 |
| | REFERENCES. 5 |
| | CHAPTER 2 |
| | Spatial and temporal variability of pelagic fish community structure and distribution in Chesapeake |
| | Bay, U.S.A 9 |
| | ABSTRACT . 9 |
| | INTRODUCTION 10 |
| | MATERIALS AND METHODS . 15 |
| | DISCUSSION. 46 |
| | ACKNOWLEDGMENTS 63 |
| | REFERENCES. 63 |
| | CHAPTER 3 |
| | Spatial distribution and recruitment of bay anchovy in Chesapeake Bay 105 |
| | ABSTRACT . 105 |
| | INTRODUCTION 106 |
| | METHODS. 109 |
| | RESULTS. 119 |
| | DISCUSSION. 128 |
| | ACKNOWLEDGMENTS138 |
| | REFERENCES. 139 |
| | CHAPTER 4 |
| | Production of bay anchovy in Chesapeake Bay . 167 |
| | ABSTRACT . 167 |
| | INTRODUCTION 168 |
| | MATERIALS AND METHODS . 172 |
| | RESULTS. 189 |
| | DISCUSSION. 195 |
| | ACKNOWLEDGMENTS216 |
| | REFERENCES. 217 |
| | CHAPTER 5 |
| | Fish biomass size spectra and production in Chesapeake Bay. 243 |
| | ABSTRACT . 243 |
| | INTRODUCTION 244 |
| | MATERIALS AND METHODS . 247 |
| | RESULTS. 252 |
| | DISCUSSION. 258 |
| | ACKNOWLEDGEMENT 270 |
| | REFERENCES. 270 |
| | CHAPTER 6 |
| | Conclusions 293 |
| | REFERENCES. 297 |
| | APPENDICES 299 |
| | Appendix I. Estimated mean pycnocline depths in Chesapeake Bay from 1995 to 2000. .300 |
| | Appendix II. Number and biomass per 20-min tow of major fish species (CPUE). N = Number, B = |
| | Biomass (g), YOY = Young-of-the-year fish . 301 |
| | Appendix III. Relative baywide estimate of number and biomass of major fish species (CPUE). N = |
| | Number (x106), B = Biomass (metric tons), YOY = Young-ofthe-year fish. . 303 |
| | Appendix IV. Modal analysis of bay anchovy in Chesapeake Bay from 1995 to 2000. Color |
| | legends: gray – adults, black – first young-of-the-year YOY cohort, red – second YOY cohort, blue |
| | – third YOY cohort, light gray – fourth YOY cohort. 305 |
| | Appendix V. Estimation of growth rate and mortality during the overwinter period (October-April) by |
| | comparing October and April length frequencies of bay anchovy in Chesapeake Bay. 307 |
| | Appendix VI. Regional (lower, middle, upper Bay) estimates of annual mean biomass (B) and total |
| | production (P) of pelagic and bentho-pelagic fishes in Chesapeake Bay from 1995 to 2000 based on |
| | the observed B for each size-class and the allometric P/B relationship reported by Banse and |
| | Mosher (1980). Prey is < 8 kcal, and predator is > 8 kcal body weight. 310 |
| | LIST OF COMBINED REFERENCES . 311 |