Table 3. Composition of the zooplankton community in each zone before, 

 during, and after the May 1972 flood in San Antonio Bay, Texas. Each zone's 

 composition is represented by its 12 most abundant taxa . * indicates taxa of 

 freshwater origin. Surface and bottom salinities (o/oo) are given for each 

 zone on each date. 



ZONE 1 



ZOSS 2 



zo:;: 



Surface: 1.5 

 Botton : 1.7 



Acartia tonsa 



Asplanchr.a sp. 



Gastropod velioers 

 ♦ Cyclops sp. 

 • Sinocephalus sp. 



Harpacticoids 

 * Diaptonus spp . 

 • Arcella disccides 

 * Perissocyt her idea sp. 



Copepod nauplii 



Ergasilus sp. 



Ostracods 



Date: 7 June 1972 



4.7 



5.3 

 Acartia tonsa 

 Balanus sp . nauplii 

 Paracalanus crassirostris 

 Cyphonautes larva 4 A 

 Copepod naur 1 : : 

 Oithor.a colcarva 

 ♦ Cyclops so. 

 Polychaete larvae 

 Asplanchna sp. 

 Epistylis sp. 

 Ergasilus sp. 

 • Brachionus quadridentatus 



5.8 



6.1 

 Acartia ton;a 

 Balarus sp. nauplii 

 Pseudodiaptcms cor 

 Paracalanus crassir 

 O.Thonantes larva = 

 Oithor.a colcarva 

 Copepod nauplii 

 Spionid larvae 

 Fish eggs 

 Polychaete larvae 

 •Brachionus cruadridc 



Bivalve velioers 



Date 



Surface: 1.5 

 Bottom : 1.7 



Acartia tonsa 



• Ilyocryptus spir.ifer 

 •Cyclopoids 

 •Epheiteropterar. larva 

 •Diaptor-.us spp. 

 •Trooorv-cioos orasi 



:s 



22 June 

 5.8 

 6.5 

 Acartia tonsa 



1972 



Balanus sp. nauplii 

 Gastropod veligers 

 Oithona colcarva 

 Copepod nauplii 

 Her.icyclcps sp . copepodic 

 Keopanope texar, j zoea 

 Kalicyciops fos'-eri 

 Spionid larvae 

 Erg asilus sp. 

 Calliar.assa sp. s l zoea 

 •Ostracods, Cyprididae 



9.3 



10.0 

 Acartia tonsa 

 Balar.us sp. nauplii 

 Spior.id larvae 

 Copepod nauplii 

 Pseudodiaotor-.us coror.atus 



Gastropod veligers 

 Oithor.a colcarva 

 Bivalve veligers 

 Calliar.assa sp. -1 zoea 

 Halicvclocs fosteri 



Gobicso~3 bosci larvae 

 Rithropar.oDeus harrisii 



Gastropod veligers 

 •Ostracods 



Pseudod lap tonus coror.atus 



Asp lancnna sp . 



Harpacticoids 



Ergasil js sp. 

 •Cyclopoibs 



Gastropod veligers 

 Polychaete larvae 

 Oithona colcarva 

 Ergasilu s sp . 



Tiatyias quadncorr.is 



' Eucyclops sp. 

 Brachyuran zoea 



Copepod nauplii 

 Fish eggs 

 Bivalve veligers 

 Gastropod veligers 

 Anchoa mitchilli larvae 

 Spior.id larvae 

 CvDhcnautes larva &A 



Surface: 2.6 

 Bottom : 3.0 



Acartia tor.sa 



Balanus sp. nauplii 

 Gastropod veligers 

 Copepod nauplii 

 Spionid larvae 

 • Arcella discoides 

 Halicvclor-s fosteri 



Bivalve veligers 

 Pseudodiac tonus coronatus 

 Tintinnorsis sp ■ 

 Balanus sp. cypris 

 Oithona colcarva 



te: 20 July 1972 



8.1 



8.2 

 Acartia tonsa 

 Balanus sp . nauplii 

 Copepod nauplii 

 Brachionus plicatilis 

 Kneru, op s i s nccradyi 

 Gastropod veligers 

 Favella pananensis 

 Balanus sp . cypris 

 Cypr.onautes larva **A 

 Bivalve veligers 

 Pr.eudoci aotorrus coronatus 



9.5 

 11.8 

 Acartia tonsa 

 Balanus sp . nauplii 

 Oithor.a colcarva 



Copepod nauplii 

 Cyphonautes larva -A 

 Pseudodiap tonus coronatus 

 Balanus sp. cypris 

 Mneniopsi s mccradyi 

 Spionid larvae 

 Paracalanus crassirostris 



Neocanooe texar.a zoea 

 iicatilis 



Faracalanus crassirostris Brachionus 



516 



