Above: bluegreen algae; below: 

 green algae on pickleweed. 





Figure 32. Luxuriant algal mats grow on 

 the soil surface, underneath the vascular 

 plant canopies and on intertidal mudflats. 

 The bluegreen algae provide a matrix of 

 filaments throughout which dozens of 

 species of diatoms exist. Green algae 

 become more conspicuous in winter. 

 Photos by J. Zedler. 



Table 8. Distribution of the 38 most 

 frequently encountered algae of the Tijuana 

 Estuary salt marsh. Numbers = occurrence 

 rank; letters = habitat/season of greatest 

 frequency (see codes below). Unpub. data 

 of J. Zedler. 



crinita (Roth) J.Ag.: 



Green algae 



12 Rhizoclonium riparium (Roth) Harvey: M/W 

 33 Enteromorpha clathrata 



B/WSp 



Bluegreen algae 



3 Microcoleus lyngbyaceus (Kutz.) Cruoan: S/Su 



13 Schizothrix mexicana Gom.: JBM/SpSuF 

 15 S. arenaria (Berk.) Gom.: B/Su 



20 S. calcicola (Ag. ) Gom.: M/Su 



D i a toms 



1 Trachyneis aspera (Ehr.) CI.: JBM/HSph" 



2 Denticula subtilis Grun.: MB/W 



4 Nitzschia vermicularis (Kutz.) jrun: JS/Su 



5 Diploneis smithii" (Breb. ex W.Sm.) CI.: JBM/W 



6 Nitzschia incrustans Grun.: SJ/SpSu 



7 Navicula ramosissima (Ag.) CI.: BJ/SpSuF 



8 Achnanthes sp. 1: BS/SpSu 



9 Mastogloia exigua Lewis: B/SpSu 



10 Nitzschia subtilis Grun.: J/SpSu 



11 Amphora turgida Greg.: BJ/F 



14 Gyrosigma obliquum (Grun.) Boyer: S/Su 



16 Nitzschia obtusa v. nana Grun.: random/W 



17 Surirella fastuosa (Ehr.) Kutz: M/W 



18 Diploneis interrupta (Kutz.) CI.: M/W 



19 Navicula mollis (W. Sm.) CI.: SBM/SpF 



21 Ni. longissima (Breb. ex Kutz.) Ralfs: BS/Sp 



22 Ni. punctata v. coarctata (Grun.) Hustedt: S/Sp 



23 Achnanthes sp. 2: B/Sp 



24 Nitzschia fonticola Grun.: B/FW 



25 Achnanthes brevipes Ag.: M/F 



26 Nitzschia fasciculata Grun.: J/Su 



27 Caloneis westii (W. Sm. ) Hendey: JB/F 



28 Amphora exigua Greg.: M/random 



29 Na. digito-radiata (Greg.) Ralfs: B/W 



30 Rhopalodia musculus (Kutz.) O.Mull.: B/random 



31 Nitzschia angularis W. Smith: JS/WSu 



32 Amphora coffaeformis (Ag.) Kutz.: MB/W 



34 Pinnularia ambigua CI.: M/W 



35 Ni. obtusa v. scapell i formis Grun.: MB/F 



36 Diploneis bombus Ehr.: M/WSp 



37 Nitzschia acuminata -(W.Sm. ) Grun.: B/W 



38 Diploneis lineata (Don k.) CI .: S/Sp 



Habitat/Season codes are as follows: 

 S=dense Spartina canopy @ 7 dm MSL 

 J=open Jaumea canopy @ 7 dm MSL 

 B=open Batis canopy P 8 dm MSL 

 M=open Monanthochloe canopy 9 dm MSL 

 random=no pattern using 5C2 test 



' W=winter 

 Sp=spring 

 Su=summer 

 F=fall 



45 



