marsh, used a clip-quadrat method to harvest animals from the total 

 aboveground plant. Thus his method approximates a combination of the 

 sweep net and clip-quadrat methods used in Siletz and Netarts Bays. 

 He found that the orders Diptera, Coleoptera, and Hymenoptera con- 

 tributed the most species, but that a pseudococcid homopteran was the 

 most abundant species throughout the year. The dominant homopterans 

 in Lane (1969) were delphacids and psyllids. In the Oregon marshes, 

 aphidids, delphacids, and cicadellids varied as the most abundant 

 homopterans, depending on marsh and collection method. 



Adult dipterans in the Oregon marshes were almost absent in the 

 low vegetation, and both abundant and varied in the high vegetation, 

 where ceratopogonids, dolichopodids and muscids were common (Figs. 4 

 and 5). Dominant dipterans in Lane (1969) were Chloropidae, Ephydridae, 

 and Chironomidae. Cameron (1972) did not provide abundance information 

 for Diptera. 



Davis and Gray (1966) used a sweep net to collect insects from the 

 North Carolina salt marshes where the dominant orders were also Homop- 

 tera and Diptera. The most abundant homopterans were cicadellids and 

 delphacids, and the most abundant dipterans were chloropids, dolicho- 

 podids, and ephydrids. 



Collembolans were concentrated in the low vegetation of the Oregon 

 high level marshes (Fig. 4). The most abundant family, Isotomidae, 

 also occurred in Lane's (1969) core samples but were not abundant in 

 his- other samples. Davis and Gray (1966) did not list Collembola as 

 abundant. In Cameron (1972), a podurid was extremely abundant in 

 Spartina foliosa (a low marsh), especially after high tides. Paviour- 

 Smith (1956) indicated that an isotomid was very abundant in the high 

 marsh zone of a New Zealand salt meadow which she sampled using a 

 cylindrical enclosure. She points out that collembolan densities can 

 be erratic due to rapid summer reproductive cycles and the fact that 

 the animals float onshore with the incoming tide where they remain 

 in dense colonies when the tide recedes. 



The coleopterous families Coccinellidae and Chrysomellidae were 

 collected in the Oregon marshes (Fig. 5), as well as in the Atlantic 

 coast marsh (Davis and Gray, 1966) and in San Francisco marshes (Lane, 

 1969). Paviour-Smith (1956) does not list these families. The 

 mention of several other families (e.g., Carabidae, Staphylinidae, 

 Curculionidae) varied in these studies, but there was no consistent 

 pattern to their occurrence. Limnebiidae, abundant in the low sand 

 marsh of Netarts Bay, was not mentioned in the other studies. 



Of four terrestrial families of Hemiptera found in the Oregon 

 marshes (Table 6), Lygaeidae, Miridae, and Pentatomidae were described 

 by Davis and Gray (1966) as the most abundant hemipterans in North 

 Carolina marshes. The remaining Oregon family, Saldidae, was listed 

 by Lane (1969) as occurring in the San Francisco marsh along with 

 Miridae, Pentatomidae, and two other families not found in the Oregon 

 marshes. 



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