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Table V. Species distribution in selected water courses and the number of specimens taken in the whole of area 3 1:5 (North 0sterdalen and its surroundings) 00 'N ~ oS ~ ~ ~ ~ \.) 'loo.; ~ ...... "":l ""'-'l ~ ~ ~ ~ .~ ~ ~ ~ e ~.~ ~ ~ .;: '" ..;: "'"'
Norwegian stoneflies II 209 significant in some reaches, such as below Tynset. Hardness and pH were measured in 1967, 1968 and 1970. The highest values were recorded in streams in the Glama valley. In the smaller streams pH varied from 7.0 to 7.6 and in the rivers from 7.0 to 7.8. The Ca++ content ranged from 4.3 to 18.3 mg/l in the small streams and from 4.7 mg/l to 13.1 mg/l in the rivers. In the Femund area pH lay between 5.6 and 6.0 and the Ca++ content between 0.3 mg/l and 2.0 mg/l. Stonefly fauna The area is rich in species and supports 27 of the 29 species which have been taken in Norway south of the Dovre Mountains (Table V). The only species not present here are the rare Perlodes dispar and Xanthoperla apicalis. Faunistically the area divides itself into two parts. 1. The western area with the valleys of the Glama and its tributaries, which contains the higher number of species (25). In this area Capnia atra, Capnia bifrons and Capnopsis schilleri are common and can be taken in great numbers in most streams. Amphinemura borealis and Amphinemura sulcicollis are also common and numerous. Arcynopteryx compacta was only taken once, in the Atna valley. 2. The eastern area consisting of the western side of Femunden contains 22 species. Of these Isogenus nubecula and Isoperla difformis are not present in the Glama area, while conversely Capnia bifrons, Capnia pygmea, N emoura flexuosa, Amphinemura borealis and Arcynopteryx compacta have not been taken in the eastern area. The most marked difference is the weak position of the Capniids in the eastern area compared to the strong position of Capnia bifrons, Capnia atra and Capnopsis schilleri in the western areas. This is the same trend as found in area 2, the Oslofjord. In the lakes of area 3, five species were taken, N emoura avicularis, N emoura cinerea, Amphinemura sulcicollis, Siphonoperla burmeisteri and Diura bicaudata. Among the carnivorous species Diura nanseni dominates in streams and rivers. The rare Isogenus nubecula was only taken in the stream Tufsinga in the northern part of the Fig. 8. Sketch of the lake, 0vre Heimda1svatn, and the streams investigated (1-9). Map coordinates refers to UTM system. area. Dinocras cephalotes is present in certain sections of some rivers while Diura nanseni occurs nearly everywhere. Diura bicaudata is common in lakes. Area 4. 0vre Heimdalen This is a smaller area than the others. It was chosen because it was suitable for a study of both the stream and lake Plecopteran faunas and enabled comparisons to be made with the species association of the lake outlets where there is a mixing of both lotic and lentic elements. The area is also situated in a part of Norway where the tree line is highest and where the alpine areas can be easily reached. Area description The valley 0vre Heimdalen is situated on the eastern side of the Jotunheim Mountains. In this area (Fig. 8) 11 streams and 3 lakes were investigated, ranging in altitude from 1060 m to 1500 m a.s.l. Some of the surrounding mountains, however, reach heights of 1700-1800 m a.s.!. The bedrock on the northside of the valley is largely gabbro, while on the southside syenite predominates. The area is covered by a thick layer of glacial drift. Lying in the rain shadow of the western mountains, precipitation is between 600 and 800 mm a year.
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Norsk Entorriologisk Tidsskrift Nor
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451 1 I I I I I I I 4 6 8 10 12 14
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Dry Weight , mg. Fig. 7. Correlatio
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Table 11. Caloric values per g dry
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Talbe IV. Oxygen consumption given
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etween the sexes during the respira
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128 A. Fjellberg Fig. 2. A. sefiten
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130 A. Fjellberg HABITATS Until now
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132 L. Semme the autumn. The prelim
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'~0~1-0611 '96 'lourouy 'uu3 's3asu
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136 J. E. Brittain Fig. 1. The loca
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138 J. E. Brittain period was longe
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140 J. E. Brittain Table 11. Ph~sic
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142 J. E. Brittain Table IV. Physic
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144 J. E. Brittain EPHEMEROPTERA Am
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146 J. E. Brittain 0-3 NYMPHS I I 1
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148 J. E. Brittain 1-3 NYMPHS 01 I
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150 J. E. Brittain Nemzlrella picte
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152 J. E. Brittain ture and the inc
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(Nord-Norwegen) (Trichoptera, Pleco
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from anoxia. Drops of haemolymph we
Page 45 and 46: Notes on little known spiders in No
Page 47 and 48: Symphyla and Pauropoda from two con
Page 49 and 50: Symphyla and Pauropoda 163 Table 11
Page 51: sults it is clear that the animals
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Page 56 and 57: 170 T. R. Nielsen Table 1. A compar
Page 59 and 60: Abundance and diversity in the faun
Page 61 and 62: Nocturnal moths 175 Table 1. Number
Page 63 and 64: Nocturnal moths 177 Grimstad Amli 1
Page 65 and 66: Nocturnal moths 179 Am/i. Norway 19
Page 67 and 68: Nocturnal moths 181 Grimstad, Norwa
Page 69 and 70: Nocturnal moths 183 %60 50 40 30 20
Page 71 and 72: Spinosellina forms of Sminthurides
Page 73 and 74: A constant pressure microrespiromet
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Page 78 and 79: 192 F. E. Klallsen The specimens fr
Page 80 and 81: 194 F. E. Klausen REFERENCES Ardii,
Page 82 and 83: 196 A. Lillehammer present in Norwa
Page 84 and 85: 198 A. Lillehammer Results The numb
Page 86 and 87: 200 A. Lillehammer Fennoscandian co
Page 88 and 89: 202 A. Lillehammer parts of the are
Page 90 and 91: 204 A. Lillehammer carnivorous spec
Page 92 and 93: Table IV. Species distribution, in
Page 96 and 97: 210 A. Lillehammer The bottom of th
Page 98 and 99: 212 A. Lillehammer Blatjemn Diura b
Page 100 and 101: Table VII. Species distribution in
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Page 108 and 109: 222 A. Lillehammer Table XI. The pH
Page 110 and 111: 224 A. Lillehammer These species se
Page 112 and 113: 226 A. Lillehammer Table XVI. The s
Page 114 and 115: 228 A. Lillehammer Fig. 22. Stream
Page 116 and 117: 230 A. Lillehammer Fig. 25. Distrib
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Page 130 and 131: 244 A. Lillehammer streams and rive
Page 132 and 133: 246 A. Lillehammer Blies (1953, 195
Page 134 and 135: 248 A. Lillehammer streams are to a
Page 136 and 137: 250 A. Lillehammer Muller, K. 1955.
Page 138 and 139: 252 Bokanmeldelser produserende, en
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Page 142 and 143: SHORT COMMUNICATIONS C. van Achterb
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