Species axis 1 was positively correlated with SD and Chrysophyta
biomass but negatively correlated with TP (Fig.
0,51 0,00001 Chrysophyta
Dinoflagelado 1,82 7,11 Alaucosira sp.
Chlorophyta and Chrysophyta
were the dominant taxa in the phytoplankton of Shelby Creeks.
The cyanobacteria accounted for ten species, followed by the Chlorophyta with four species and the Chrysophyta
with one species.
Koch (1976) recorded 91 taxa of Chlorophyta, 64 of Cyanophyta, 6 of Chrysophyta
(excluding diatoms), and 1-3 each of Pyrrhophyta, Euglenophyta, and Xanthophyta.
Moreover, remarkable level of flagellate biomarker in both species suggested the importance of flagellates (mainly including species in Chrysophyta
and Pyrrophyt) in the diet of two intertidal bivalves.
Chapman considers the haptophytes or prymnesiophytes, and diatoms or Bacillariophyta as two independent types of protoctists, and includes the silicoflagellates as a class within the Chrysophyta
(also considered as a separate phylum), called the Dictyochophyceae.
and Cryptophyta taxa dominated the phytoplankton at the start of the experiment in all enclosures and throughout the summer in the control enclosures ([ILLUSTRATION FOR FIGURE 4 OMITTED], Plate 1, Appendix I).
Zygnemaphyta was the most specious group (94 taxa), followed by Chlorophyta (77 taxa), Bacillariophyta (71 taxa), Cyanophyta (20 taxa), Euglenophyta (12 taxa), Chrysophyta
(5 taxa), Dinophyta (2 taxa), Cryptophyta (1 taxa) and Xanthophyta (1 taxa).
Lowe & Cox This Study (1978) Jun 93 Oct 93 Jan 94 Division Chlorophyta Bryopsis pennata - - X X Chaetomorpha linum X X X X Cladophora dalmatica - X X X Cladophora ruchingeri - X X - Cladophora vagabunda - X X X Enteromorpha clathrata - X X X Enteromorpha lingulata - X X X Enteromorpha prolifera - - - X Ulothrix flacca - X X - Ulvella lens X - X - Division Chrysophyta
Chlorophyta was the most specious group (98 taxa), followed by Bacillariophyta (58 taxa), Cyanophyta (32 taxa), Zygnemaphyta (21 taxa), Euglenophyta (8 taxa), Chrysophyta
(7 taxa), Dinophyta (6 taxa), Cryptophyta (2 taxa) and Rodophyta (1 taxa).