Posters, in order of presentation 1. Analysis of genetic variation in mtMSH in the genus Leptogorgia (Cnidaria: Octocorallia) and implications for studying population structure Andrea LePard* and Scott C. France 2. Phylogenetic analyses of the shallow-water Caribbean octocorals using mitochondrial DNA sequences (NADH-dehydrogenase subunits 2-6, and MSH) and morphological characters Juan A. Sánchez,* Catherine S. McFadden, Scott C. France, and Howard R. Lasker 3. Mass mortality of the staghorn coral Acropora cervicornis in Jamaica: unique event or repeated pattern? C. M. Wapnick,* W.F. Precht, and R. B. Aronson 4. The chemosensory tracking behavior of the sea urchin Lytechinus variegatus… like watching grass grow Daniel P. Pisut* and Marc J. Weissburg 5. Determining spatial variation in growth and population structure of the red sea urchin (Strongylocentrotus franciscanus) using a direct aging technique in Southeast Alaska Andrew O. Shelton,* Jon Witman, Kyle Hebert, and Douglas A. Woodby 6. How does wave action stimulate thread production in Mytilus edulis? G. M. Moeser* and E. Carrington 7. Mussel mimics: an innovative way to show some intertidal mussels just aren't cool Tara Fitzhenry,* Brian Helmuth, Kristi Gardner 8. Biology of a scale worm: natural history and bioluminescent response Elizabeth K. Sargent* and James G. Morin 9. Does cyclomorphosis occur in harpacticoid copepods? Investigation of genetic and seasonal morphologic variation in Nannopus palustris Brady 1880 in North Inlet, South Carolina, USA Lisa C. Wickliffe,* Lesya Garlitska, Joseph L. Staton, and Bruce C. Coull 10. Fundulus majalis as a potential predator of the invasive asian shore crab Hemigrapsus sanguineus A. K. Kim and N. J. O’Connor* 11. Growth and survival costs of aggression in juvenile Hemigrapsus sanguineus crabs Niels-Viggo S. Hobbs* 12. Dominance hierarchies of gray triggerfish, Balistes capriscus, schools David W. Cleveland* and Kari L. Lavalli 13. Physiological role of the brood pouch in Gulf pipefish, Syngnathus scovelli Christi Cazalas,* Jessica Rozelle,* Charlyn Partridge,* Jon Hemming, and Anne Boettcher 14. Invasive reef builder polychaetes: environmental factors affecting its growth rate Evangelina Schwindt,* Claudio G. De Francesco, and Oscar O Iribarne 15. Physical constraints on zonation patterns of the barnacle Chthamalus fragilis K. Aveni-Deforge* and D. S. Wethey 16. Distribution of Tritonia sp., a tritoniid opisthobranch, on a Bahamian patch reef Cynthia L. Lewis,* Meredith A. Dorner,* and Evelyn Luna 17. Life history observations of newly settled corals (Montastraea annularis species complex) over the first half-year post-settlement Nicole Fogarty* and Alina M. Szmant 18. An examinination of resident macrofaunal recruitment and utilization on natural and experimental intertidal oyster reefs: an early assessment Jessica A. Stephen,* Loren D. Coen, and David M. Knott 19. Functional morphology of the setae of the slipper lobsters Scyllarides latus, S. aequinoctialis and S. nodifer's pereiopods Cassandra Malcom* and Kari Lavalli 20. Shelter fidelity among spiny lobsters is influenced by conspecific odors and familiarity with an area Stephen G. Ratchford* and David B. Eggleston 21. With one hand tied behind my back: spiny lobster self defense after loss of an antenna A. L. Parsons* and W. F. Herrnkind 22. Marine Invertebrate Diversity Initiative (MIDI): on-line documentation of marine invertebrates in the Gulf of Maine, Bay of Fundy, and the Scotian Shelf—a tool for science, industry, and education Thomas J. L. Trott,* Peter F. Larsen,* Jayne Roma, and Derek Davis Posters, in order of presentation (continued) 23. The Keys Marine Laboratory: a research and education facility in the Florida Keys Kevin McCarthy* 24. Is dissolution of gypsum stone a sufficient proxy for water flow in ecological studies? Kevan Gregalis,* Sean P. Powers, and Melissa Boykin 25. RIDGE 2000: the next decade of innovative studies and discoveries at the mid-ocean ridge Chuck Fisher* and the RIDGE 2000 Steering Committee 26. Evaluation of modified Sphyrion tags for marking Caribbean spiny lobsters, Panulirus argus Meaghan C. Darcy* and Carrollyn Cox 27. A comparison of acoustic techniques, videography, and quadrat sampling for mapping and characterizing subtidal oyster reefs Jamie Adams,* Raymond Grizzle, Larry Ward, Semme Dijkstra, and John Nelson 28. Utilizing a seabed classification system, RoxAnnTM, to monitor changes in a biologically created benthic habitat Olivia A. Hauser* and Douglas C. Miller 29. Scientific diving American Academy of Underwater Sciences 30. Impacts of natural and anthropogenic disturbance on water column attributes of the Pamlico River Estuary, North Carolina Terry West,* Reide Corbett, Lisa Clough, and Worth Calfee 31. Oyster reef health in selected southeastern North Carolina tidal creek estuaries Bethany Noller,* Jacqueline Horner, Martin Posey, and Troy Alphin 32. Shell movement and juvenile survival of the oyster Crassostrea virginica on intertidal reefs adjacent to waters with intense boating activity in the Indian River Lagoon, Florida Linda Walters,* Kevin Johnson, Lisa M. Wall, Neysa Martinez, and Ray Grizzle 33. Recruitment of the oyster Crassostrea virginica on intertidal reefs in areas with intense boating activity in the Indian River Lagoon, Florida Lisa Wall,* Linda Walters, Kevin Johnson, Neysa Martinez, and Ray Grizzle 34. Effects of sediment contamination on the burrowing behavior of the infaunal amphipod Leptocheirus plumulosus with implications for predation risk Bruce Vogt* 35. A probabilistic assessment of benthic condition of California estuaries: results from the National Coastal Assessment 1999 Walter G. Nelson,* Henry Lee II, and Janet Lamberson 36. Reef discovery, utilization and conservation in Antongil Bay, Republic of Madagascar Kenyon Mobley,* Phaedra Doukakis, and Mananjo Jonahson 37. Habitat fragmentation in seagrass ecosystems: a preliminary investigation Matthew W. Johnson* and Kenneth L. Heck, Jr. 38. Emergency restoration of significant seagrass injuries: a case study from North Sound, Grand Cayman, B.W.I. Mark Henry,* Adam Gelber, William Precht, Martin Heaney, Lisa Vitale, and Beth Zimmer 39. Variability in gut passage time of individual penaeid shrimp, with applications for aquaculture Scott Hagins* and Robert Feller 40. Water quality and coral health at Porto Seguro reefs, southern Bahia, Brazil Ozeas S. Costa Jr.,* Martin J. Attrill, and Malcolm Nimmo 41. Growth of the soft-shelled clam, Mya arenaria, inside and outside a seagrass bed, Zostera marina, in Maquoit Bay, Maine Kevin L. Carpenter,* Kenneth J. Catalano, Elias N. Kassis, Janice K. Lewis, Kate R. Meltzer, William G. Ambrose, Jr. 42. Using tropical macroalgae as indicators of environmental stress in seagrass habitats Patrick Biber* 43. Recovery of a U.S. Virgin Islands red hind spawning aggregation following protection Richard S. Nemeth, Adam Quandt, and Laurie Requa* 44. Hard clam (Mercenaria mercenaria) restocking efforts via larval injection: preliminary results on settlement success D. Morales,* E. Irlandi, W. Arnold, and S. Herber Posters, in order of presentation (continued) 45. Mangrove trimming: aesthetics at the expense of an ecosystem? William Ellis* and S. S. Bell 46. Macro-landscape similarities between North and South American salt marshes: an experimental approach Alejandro Bortolus* 47. Distribution of benthic primary production in a sub-tropical estuary Erin L. Bledsoe,* Christina E. Jett, Karen A. Donnelly, and Edward J. Phlips 48. Seasonal changes in algal community structure at Togcha Bay and Pago Bay, Guam Kevin P. Bevis,* Patrick M. Erwin, Valerie J. Paul, and Robert W. Thacker 49. Assessment and restoration of mangrove impacts: a case study from Grand Cayman, B.W.I. Timothy Austin, Kirsten Luke, Beth Zimmer,* Adam Gelber, Martin Heaney, William Precht, Mark Henry, and Cindy Savage 50. Epiphytic foraminiferans from seagrasses in mangrove habitats, Belize, C.A. Susan L. Richardson* 51. Locomotion and chemical sensory tradeoffs during olfactory navigation D. R. Webster, M. J. Weissburg, and D. L. Smee 52 Impact of the brittle-star Amphiura filiformis on the flux of oxygen into the sediment— a microelectrode approach Kay Vopel, Rutger Rosenberg, David Thistle, and Michael Teasdale 53. Impact of the brittle-star Amphiura filiformis on the flux of oxygen into the sediment—a microcosm study David Thistle, Kay Vopel, and Rutger Rosenberg 54. Changes in heavy metal distribution within mussels at chemosynthetic environments: a transplant experiment S. Rapoport,* M. Newman, D. Ownby, and C. L. Van Dover 55. Vanadium in sea squirts: is heavy metal in bad taste? Shobu Odate* and J. R. Pawlik 56. Barnacles to worms: periodic hypoxia in the Chesapeake Bay shifts community composition, but does it facilitate invasion? Elizabeth B. Jewett,* Anson H. Hines, and Gregory M. Ruiz 57. A comparison of growth rates of juvenile Callinectes sapidus along a salinity gradient in the Cape Fear River estuary Heather Harwell,* Martin Posey, and Troy Alphin 58. Oxidative DNA damage in estuarine bivalves M. L. Gielazyn,* A. H. Ringwood, S. E. Stancyk, and W. W. Piegorsch 59. Molecular phylogenetics of verongid sponges: utility of ITS-2 and 28S ribosomal DNA sequences Patrick M. Erwin,* Kevin P. Bevis, and Robert W. Thacker 60. Development of horseshoe crab embryos and larvae in a hypersaline environment G. S. Ehlinger* and R. A. Tankersley 61. Variation in heat shock protein expression during queen conch larval metamorphosis Angela Duque,* Hayden Long,* Melanie Caldwell,* and Anne Boettcher 62. Assessing changes in photosynthetic parameters in response to varying environmental stimuli using chlorophyll a fluorescence Mark D. Driscoll,* Florence I. M. Thomas, and Kevin S. Beach 63. The impacts of Upogebia pugettensis populations on organic matter and nutrient cycling in Pacific northwest estuaries. Anthony F. D’Andrea and Theodore H. DeWitt* 64. Nutrient enrichment and reduced grazing effects on epilithic turf on three Florida Coral reefs: it's never that simple Justin E. Campbell* and Alina M. Szmant 65. The effects of bait-worm digging on intertidal benthic carbon remineralization in Maine Tara N. Businski* and William G Ambrose, Jr. 66. Ecophysiology of Dictyota spp. on Conch Reef, Florida Keys K. S. Beach,* L. J. Walters, and H. B. Borgeas Posters, in order of presentation (continued) 67. Morphological changes in the brood pouch of the Gulf pipefish, Syngnathus scovelli, during egg incubation Charlyn Partridge* and Judith Shardo 68. Unexpected oxygen flux in permeable sediments Keith Suderman,* Kay Vopel, David Thistle, and Michael Teasdale 69. Connectivity among reef fish populations Peter F. Sale, Jacob P. Kritzer, Paul Chittaro, Camilo Mora, and Paolo Usseglio* 70. Examining the effects of Dictyota epiphytism and secondary chemicals on neighboring reef biota using Halimeda tuna as a model organism A. Kahn,* K. Beach, H. Borgeas, and L. Walters 71. Life on the edge: nocturnal prey emergence may lower energy transfer at the coral reef-seagrass interface Derrick Blackmon* and John F. Valentine 72. Impact of iceberg scouring on benthic assemblages in the Southeastern Weddell Sea, Antarctica Jennifer Dijkstra* and Julian Gutt 73. Patterns of benthic community structure and differential recruitment in Narragansett Bay, Rhode Island (USA) Emily L. Lindsey,* Andrew H. Altieri, and Jon D. Witman 74. Sponge dynamics in nearshore hard-bottom communities of the Florida Keys Scott Donahue* and Mark J. Butler IV 75. Investigating the relative importance of shelter and landscape complexity in determining fish community structure within the northern Florida Keys National Marine Sanctuary Geremea P. Fioravanti* and John F. Valentine 76. Do sediment disturbance processes structure estuarine soft sediment communities? Elizabeth K. Hinchey* and Linda C. Schaffner 77. Characterization of the development of fish cage fouling communities Jennifer Greene* and Raymond Grizzle 78. Factors determining host selection of the symbiotic copepod Clausidium dissimile Wilson, 1921 (Crustacea: Cyclopoidia: Clausiidae) in sympatric populations of Sergio trilobata (Biffar 1970) and Lepidophthalmus louisianensis (Schmitt 1935) (Crustacea: Decapoda: Callianassidae) J. L. Corsetti* and K. M. Strasser 79 Host specificity of symbiotic cyanobacteria in marine sponges R. W. Thacker* and S. Starnes 80. Genetic evidence for an apicomplexan-Dichocoenia sp. association Andrew R. Hannes,* Tamar L. Goulet, and Mary Alice Coffroth 81. Mixed diets and intermediate salinities support better growth of adult rather than larval sand dollar structures Daniela Schiopu* 82. Intra-year class cannibalism in early juvenile blue crabs Deborah A. Kilbane* and Ken Heck 83. Habitat type may mediate foraging behavior and success of red drum, Sciaenops ocellatus Monica J. Powers,* David W. Gaskill, and Sean P. Powers 84. Estuarine infaunal responses to food enhancement: do patterns indicate specialist or generalist strategies? M. Owens,* M. Posey, and T. Alphin 85. Prey selection by the invasive shore crab Hemigrapsus sanguineus in southeastern Massachusetts Paul E. Bourdeau* 86. Grazing preferences of marine isopods, amphipods, and gastropods on three prominent algal species of the Baltic Sea M. E. Goecker* and S. E. Kåll 87. Assessing whether oyster reef habitat functions as fish foraging grounds Jonathan H. Grabowski,* Adam J. Baukus, Kevin M. Sullivan, and Rachael Wagaman 88. The effect of prey density on zooplanktivory by the burrowing ophuiroid Hemipholis elongata (Say, 1825) F. C. Helies* and S. E. Stancyk Posters, in order of presentation (continued) 89. Getting over the hump: barriers to dispersal and the northward spread of asexual populations of the genus Mastocarpus in the Atlantic and Pacific Janet Kübler and Steve Dudgeon 90. Settlement and survival of the oyster Crassostrea virginica on constructed oyster reef habitats in Chesapeake Bay: how does reef architecture and construction material influence habitat restoration success? Janet Nestlerode,* Mark Luckenbach, and Robert Diaz 91. Recruitment patterns of the blue crab Callinectes sapidus Troy C. Rezek,* Martin Posey, and Troy Alphin 92. Assessing larval dispersal using trace element concentrations in mytilid larval shells Bonnie Becker, Lisa Levin,* Pat McMillan, Joel Fodrie, John Largier, Shelly Walther, and Claudio DiBacco 93. Rhizocephalan recognition: are the larvae of parasitic barnacles attracted to chemical cues? K. D. Walters* and J. R. Pawlik 94. The effects of maternal care on dispersal and genetic population structure of western North Atlantic haustoriid amphipods Elizabeth Jones* and Scott C. France 95. Eelgrass mesocosms for food-web experiments: a reality check J. Paul Richardson,* Jesse A. Philpot, and J. Emmett Duffy 96. The ecology of seagrass gaps in Tampa Bay, Florida (USA) Nate Stafford* 97. The relationship between chemically defended macroalgae and their predators Jill C. Roberts* 98. Experimental evaluation of simulated herbivory and reduction of short shoot density on the extent of Labyrinthula sp. infection in Thalassia testudinum Justin W. Bowles* 99. Plant-animal interactions in the seagrass-coral reef landscape: correlative evidence that grazers control seagrass demography and reproductive potential Juliet Christian* and John F. Valentine 100. The distributional ecology of Johnson’s seagrass (Halophila johnsonii), in southeastern Florida Adam Gelber,* Donald R. Deis, and William F. Precht 101. Fragments of Dictyota: growth, generation forces and entanglement/attachment to reef organisms in the Florida Keys Heidi B. Borgeas,* Linda J. Walters, Kevin S. Beach, Laura Wick 102. The effects of grazing on seagrass epiphytes in the Baltic Sea: a comparison across latitudinal and nutrient gradients Jason Stutes,* Sanna Sari, and Just Cebrian 103. Biomass of invertebrates in mussel beds at hydrothermal vents and cold seeps K. Knick,* C. Jenkins, M. Doerries, S. Rapoport, E. Raulfs, J. Salerno, M. Turnipseed, M. Ward, and C. L. Van Dover 104. Community structure at the Florida Escarpment cold seep M. Turnipseed* and C. L. Van Dover 105. Parasite burdens of deep-sea hydrothermal vent mussels Megan E. Ward,* Charlie Gregory, and C. L. Van Dover 106. Microbial-geochemical-animal interactions drive microhabitat heterogeneity within the Eel River methane seeps, northern California Wiebke Ziebis, Lisa Levin, Guillermo Mendoza, Valerie Growney, and Robert Michener 107. Community structure in mussel beds at Logatchev, a deep-sea hydrothermal vent on the Mid-Atlantic Ridge M. B. Doerries* and C. L. Van Dover 108 Bacteriolytic activity in hydrothermal vent organisms Estella Callie Raulfs* and Cindy Lee Van Dover 109. Dual symbiosis and nutrition in hydrothermal vent mussels J. L. Salerno* and C. L. Van Dover