Ecology Of Marine Deposit Feeders

Title Page
......Page 3
Copyright
......Page 4
Dedication......Page 5
Preface
......Page 6
Contents
......Page 11
Introduction......Page 13
The Particulate Organic Matter Controversy......Page 14
Nutrition......Page 15
Functional Morphology and Feeding......Page 17
Potential Limiting Resources for Deposit Feeders......Page 20
Foraging Theory......Page 21
Stability and Trophic Structure in the Deposit FeedingRealm......Page 22
Deposit  Feeding and the Stability of the Sediment-Water Interface......Page 24
Conclusion......Page 25
Literature Cited......Page 26
Introduction......Page 36
Making Critical Assumptions......Page 37
The Emerging Picture of Detritus Supply......Page 39
The Benthic Boundary Layer, the Sediment-Water Interface and the Sediment Mixed Layer......Page 45
Ecological Partitioning of the BBL-Interface-Sediment Mixed Layer......Page 48
Conflicts Between Geochemical and Ecologically Determined Rates of Carbon Utilization: A Variable Role for a Bacterial Intermediary?......Page 50
The Preliminary View of Larger Scale Patterns of Deposit Feeding......Page 53
Patches, Patterns, and High Diversity......Page 56
Diversity and Long-Time Period Variation of Detritus Influx......Page 58
Concluding Comments......Page 60
Literature Cited......Page 61
Introduction......Page 71
Theoretical Relationships......Page 73
Model of Reactive POM-Depth Distributions......Page 79
Spatial Distribution of Food Quality......Page 85
Nutritional Potential of Sediment and Secondary Production......Page 89
Nutritional Value of Sedimentary Organic Matter: A Case Study......Page 94
A Summary Perspective on Nutrition......Page 99
Acknowledgments......Page 103
Literature Cited......Page 104
Introduction......Page 110
Concentrations and Nature of Sedimentary Organic Matter......Page 111
Constraints on the Nature of the Bioavailable Fraction......Page 114
Quantification and Identification of the Bioavailable Fraction......Page 117
Quantification......Page 118
Identification......Page 120
Literature Cited......Page 121
Introduction......Page 126
A Classification of Chemical Reactors......Page 129
A Gut Reactor Classification of Deposit Feeders......Page 131
Predictions......Page 132
Discussion and Conclusions......Page 136
Literature Cited......Page 139
Identifying the Problem......Page 141
Defining the Model......Page 142
Experimental Protocol......Page 144
Preliminary Results......Page 148
Discussion and Implications......Page 153
Summary......Page 158
Literature Cited......Page 159
Introduction......Page 161
Indicator Methods......Page 162
Radiotracer Methods......Page 164
Radiolabelling of Sedimentary Organic Matter......Page 165
A. Uptake/Loss Experiments......Page 167
Absorption Experiments......Page 168
A. Uptake/Loss Experiments......Page 170
B. Absorption Experiments......Page 172
Discussion......Page 174
Testing the Uniformity Assumption......Page 175
Preservation of Specific Activity......Page 176
Summary......Page 178
Literature Cited......Page 179
Introduction......Page 183
Materials and Methods......Page 185
Results......Page 189
Discussion......Page 195
Summary and Conclusions......Page 204
Literature Cited......Page 206
Introduction......Page 213
How Much of the Organic Matter in Sediments is Available to Deposit Feeders?......Page 214
Is optimal foraging behavior by marine deposit feeders subject to physiological limitation?......Page 218
Literature Cited......Page 227
Introduction......Page 235
Benefits and Costs of Deposit Feeding......Page 236
Some Future Directions......Page 242
Literature Cited......Page 246
Introduction......Page 259
Materials and Methods......Page 264
Experimental organisms and procedures......Page 266
Results......Page 268
Discussion and Conclusions......Page 273
Literature Cited......Page 277
Introduction......Page 281
Components of Sediment Micromorphology......Page 282
Morphological Features of Marine Sediment......Page 283
Methods of Resin-Embedding Marine Sediment......Page 290
Micromorphology of a Mudflat Sediment......Page 291
Quantification of Food Resources for Deposit Feeders......Page 292
Literature Cited......Page 297
Introduction......Page 303
A simplified view of particle selection mechanics......Page 305
Mechanics of Deposit Feeder Consumption Rate......Page 310
Literature Cited......Page 317
Introduction......Page 321
The "interactive hierarchy" of regulatory mechanisms......Page 322
Population Dynamics......Page 326
The varying sequence over which regulatory mechanisms exert influence......Page 327
Literature Cited......Page 329
Index......Page 330