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Prairie Basin Wetlands of the Dakotas:
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Tables

Table 5. Wetland use by aquatic Coleoptera in the Cottonwood Lake study area, Stutsman County, North Dakota, April 1979 - November 1980. Use expressed as a number captured per unit effort (Hanson and Swanson 1989).

Seasonal Wetlands Semipermanent Wetlands
T3 T8 Total P1 P8 Total
Coleoptera 51.5 28 40.9 4.7 10.8 7.7
Dytiscidae 35.7 22.5 29.8 3.9 8.8 6.3
Agabus ajax       <0.1 0.2 0.1
Agabus antennatus <0.1   <0.1 1.1 1.6 1.4
Agabus bifarius 1.8 1 1.5 <0.1 <0.1 <0.1
Agabus canadensis 1.1 0.3 0.7      
Agabus falli   0.1 <0.1      
Agabus punctulatus 2.2 2.2 2.2      
Colymbetes sculptilis 2.6 2.6 2.6 0.5 1.3 0.9
Coptotomus longulus 0.1 0.1 0.1   0.2 0.1
Dytiscus alaskanus         <0.1 <0.1
Dytiscus circumcinctus <0.1   <0.1 <0.1   <0.1
Dytiscus cordieri 0.2   0.1 0.1 <0.1 0.1
Dytiscus hybridus 0.5 0.1 0.3      
Graphoderus occidentalis 1.6   0.9 0.3 0.1 0.2
Graphoderus perplexus       0.1 0.3 0.2
Hydaticus modestus 0.1   0.1 <0.1 0.1 0.1
Hydaticus piceous       <0.1   <0.1
Hydroporous fuscipennis 1.9 2.6 2.2 <0.1   <0.1
Hydroporous notabilis 0.3 1.2 0.7      
Hydroporous pervicinus 0.8 2.3 1.5 <0.1 <0.1 <0.1
Hydroporous tenebrosus 0.8 2.3 1.5 <0.1 <0.1 <0.1
Hygrotus acaroides         <0.1 <0.1
Hygrotus canadensis 1.5 0.1 0.8      
Hygrotus compar 0.8 2.3 1.5      
Hygrotus impressopunctatus 2.1 0.2 1.3 0.2 0.1 0.2
Hygrotus patruelis 0.8 2.3 1.5 <0.1 0.3 0.2
Hygrotus picatus       <0.1 <0.1 <0.1
Hygrotus sayi 0.1   0.1 0.1 1.3 0.7
Hygrotus sellatus 0.1 0.1        
Hygrotus turbidus 5 0.5 3 0.2 0.1 0.2
Ilybius fraterculus       0.1 0.2 0.2
Ilybius biguttulus         0.1 <0.1
Laccophilus biguttatus 1.5   0.8 0.2 1.4 0.8
Laccophilus maculosus 1   0.6      
Laccornis conoideus 0.2 0.2 0.2 0.1   <0.1
Liodessus affinis 0.7 0.2 0.5   <0.1 <0.1
Rhantus consimilis   0.4 0.2      
Rhantus frontalis 8.2 4.4 6.5 0.7 0.9 0.8
Rhantus suturellus 0.3   0.2      
Gyrinidae <0.1   <0.1 0.1 <0.1 0.1
Gyrinus maculiventris <0.1   <0.1 <0.1   <0.1
Gyrinus minutus       0.1 <0.1 0.1
Haliplidae 1.1 2.6 1.8 0.5 1.8 1.2
Haliplus hoppingi 0.2 2.5 1.3 <0.1   <0.1
Haliplus immaculicollis 0.1   0.1 0.3 1 0.6
Haliplus strigatus 0.2 0.1 0.2 0.1 0.7 0.4
Haliplus subguttatus 0.6   0.3 0.1 <0.1 0.1
Peltodytes edentulus         <0.1 <0.1
Peltodytes tortulosus         0.1 <0.1
Hydrophilidae 14.7 2.9 9.4 0.2 0.2 0.2
Berosus fraternus 1.3 1.4 1.4   <0.1 <0.1
Berosus hatchi 8.2 0.3 4.7      
Berosus striatus   0.1 0.1 <0.1   <0.1
Helophorus oblongus   0.3 0.2      
Helophorus linearis   0.1 <0.1      
Helophorus lineatus   0.1 <0.1      
Hydrobius fuscipes   0.3 0.1      
Hydrochara obtusata 0.3 0.2 0.3   <0.1 <0.1
Hydrochus squamifer   0.1 <0.1      
Hydropnilus triangularis <0.1   <0.1      
Tropisternis lateralis nimbatus 4.7   2.6 0.2 0.1 0.1

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