Phytoplankton 9

Class Cryptophyceae 11
Class Dinophyceae (Dinoflagellates)15

Key to genera of class Dinophyceae 18
Description of Dinophyceae species 21

Class Bacillariophyceae (Diatoms) 121

Key to orders of class Bacillariophyceae 124
Key to subordes of order Centrales124
Key to families of suborders

I Coscinodiscineae 124
II Rhizosoleniineae 125
III Biddulphiineae 125

Keys to genera of order Centrales

Thalassiosiraceae125
Melosiraceae 126
Rhizosoleniaceae 126
Leptocylindraceae 126
Biddulphiaceae126
Chaetoceraceae 127

Key to suborders and families of order Pennales

Fragilariaceae127
Naviculaceae127
Nitzschiaceae127

Description of Bacillariophyceae species 137

Class Dictyochophyceae273
Class Chrysophyceae277

Key to genera of class Chrysophyceae 277
Description of Chrysophyceae species 279

Class Prymnesiophyceae 289

Key to genera of class Prymnesiophyceae 289
Description of Chrysophyceae species 291



Seaweeds Introduction 297


Kira L. Vinogradova

Division Chlorophyta (Green algae) 300

Structure of the thallus 300
Reproduction 301
Ecology 302
List of species of green algae (Chlorophyta) from the Spitsbergen coast 302
Key to genera of division Chlorophyta 303
Description of Chlorophyta species 311

Division Phaeophyta (Brown algae) 347

Structure of the thallus 347
Reproduction 348
Ecology 348
List of species of brown algae ( Phaeophyta) from the Spitsbergen coast 349
Key to genera of division Phaeophyta 351
Description of Phaeophyta species 361

Division Rhodophyta (Red algae) 433

Structure of the thallus 433
Reproduction 434
Ecology 435
List of species of red algae ( Rhodophyta) from the Spitsbergen coast435
Key to genera of division Rhodophyta437
Description of Rhodophyta species 449



References 507




Index of taxonomic names 511

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