CONTENTS IX 



Chapter — Continued 



IV. Distribution of chemical constituents of sea water — Continued Paee 



Summary 149 



Literature cited 150 



The recovery of minerals from sea water. By C. M. Shigley 153 



V. Plant and animal communities. 



Phytoplankton of the Gulf of Mexico. By Charles C. Davis 163 



The zooplankton of the Gulf of Mexico. By Hilary B. Moore 171 



Material 171 



Bibliography 172 



Red tide. By Reuben Lasker and F. G. Walton Smith 173 



Sketch of the character of the marine algal vegetation of the shores of the 



Gulf of Mexico. By Wm. Randolph Taylor 177 



General nature of the flora ^ 177 



Marine botanical studies of the Gulf of Mexico 177 



Collateral works of reference for the Gulf algal flora 178 



Chief types of algal vegetation 179 



Shifting sandy beaches and estuarine mud flats 179 



Stable sand and mud; pools, small lagoons and coves 179 



Protected coves and pools with a marine channel 180 



Protected bays and lagoons 180 



Mangrove thickets 180 



Tidal streams 1 80 



Sandy shallows and "reefs" of shell and coral rubble 183 



Rocky shores and inshore reefs 183 



Pelagic seaweeds 185 



Local features of the Gulf coast marine algal flora 186 



Cited literature of Gulf of Mexico algae and bibliography of principal 



works dealing with comparable West Indian marine algae 189 



Flowering plants of the waters and shores of the Gulf of Mexico. By 



Robert F. Thorne 193 



Submarine meadow 193 



Mangrove swamp 194 



Salt marsh 196 



Sand-strand vegetation 198 



Conclusion 199 



Bibliography 199 



Bottom communities of the Gulf of Mexico. By Joel W. Hedgpeth 203 



Investigations of recent facies 205 



The oyster community 206 



Serpuloid reefs 210 



The jetty community 210 



Sand beach communities 211 



The shrimp ground community 211 



The coral and sponge communities 213 



Literature cited 213 



VI. Bacteria, fungi, and unicellular algae. 



Marine bacteria and fungi in the Gulf of Mexico. By Claude E. ZoBelL., 217 



Dinoflagellates of the Gulf of Mexico. By Herbert W. Graham 223 



Present status of diatom studies in the Gulf of Mexico. By Paul Conger. 227 



Literature 227 



Campeche Bay 227 



Mobile Bay 228 



Tortugas and west coast of Florida 228 



Other records 228 



Diatom floras of Gulf and adjacent waters 229 



Ecology 229 



Productivity 229 



Silica relationships 230 



Bibliography 23 1 



