Full-text - Norsk entomologisk forening

More documents

Recommendations

Info

136 J. E. Brittain Fig. 1. The location of the four study areas. 1. Finse, 2. Heimdalen, 3. Vassfaret, 4. Oslo region. Finse The Finse area (Fig. Y), situated on the northwest side of the Hardanger glacier (Hardangerjnkulen), lies mainly within the Ulvik district of the county of Hordaland. Altitudes within the study area range from 1200 to nearly 1900 m a.s.1. At lower levels the bedrock is granite, which is slow to weather and poor in nutrients. Above this, especially on the north side of the main valley, there are schists which provide more nutrient conditions. The schists are in turn overthrust by granite, forming the Hallingskarvet massif and the higher parts of the Hardangerjnkul. In addition there are extensive areas of moraine material. The area is situated on the watershed between east and west. Precipitation is therefore high, in the region of 1200 mm per year, and this together with cool summers (mean temperature of B°C for July and August) results in a short ice-free period. The whole area lies in the alpine region. Heimdalen Heimdalen and its surroundings (Fig. 3) lie on the eastern edge of the Jotunheim moun- Fig. 2. The Finse area. Investigated localities are nurnbered. tains in the county of Oppland. Within the area altitudes range from 1000 to 1843 m a.s.1. The bedrocks are basic but resistant to weathering, and are composed of intrusives and sparagmite from the thrust masses of the Caledonian and pre-Ecocambrian ages (Holtedahl 1960). Moraines are widespread, but there is no present glacial activity within the area. The climate is drier and less severe than the Finse area. At the leve1 of Ovre Heim- Fig. 3. Heimdalen and surroundings. Investigated localities are numbered.
Eplzenzeroptera and Plecoptera 137 dalsvatn annual precipitation is in the region of 700 mm and the yearly mean temperature is approximately O°C. This results in a somewhat longer ice-free period than Finse, especially at lower altitudes. The lower localities (below 1100 m a.s.1.) are situated in the subalpine region, while the others lie in the alpine region. Intensive studies have been carried out on 0vre Heimdalsvatn under the auspices of IBPIPF. Zlassfaret The Vassfaret area (Fig. 4) lies on the border between the counties of Buskerud and Oppland about 100 km north-west of Oslo. It coinprises a forest area up to about 900 m a.s.1. and a mountain plateau area above this whe1.e an altitude of 1285 m a.s.1. is reached. The slowly eroding gneiss and granite which make up the bedrock of the area are covered by a thin layer of glacial grave1 (Holmsen 1955, Smithson 1963). The area has an inland climate with cold winters and relatively warm summers, although precipitation is in the order of 1000 mm per year. However, there are quite large differences within the area between the vallev bottom at 500-600 m and the mountain plateau at 1200 m a.s.1. Spruce (Picea abies) dominates the forest parts, with birch (Betula pubescens) and pine Fig. 5. The Oslo region. Investigated localities are numbered. (Pinus sylvestris) occurring sporadically, particularly on and around boggy areas and around the trec line. The mountain plateau area lies in the middle alpine region. Oslo region The region around Oslo (Fig. 5) has an extremely varied and complicated geology. In the east, granite and gneiss dominate, while to the west, Permian eruptives, to- " ~ether with Cambro-Silurian sediments. form the major part. Deposits of marine clay are common near the coast (Holtedahl 1960). The climate varies within the region, the degree of continentality increasing as one goes further north and further from the fjord. In Oslo, the annual mean temperature is 5.8OC and the yearly precipitation is 740 mm (based on values 1931-1960). Most of the region is covered by coniferous forest, although at lower altitudes larae areas are devoted to agricultura1 and urban development. Fig. 4. Vassfaret. Investigated localities are nurnbered. METHODS The four areas were sampled every 6-7 weeks during the ice-free period, thus enabling tEe registration of the major species in the different localities. In addition, especially in the more lowland localities where the ice-free
Page 2 and 3: Norsk Entorriologisk Tidsskrift Nor
Page 4 and 5: 451 1 I I I I I I I 4 6 8 10 12 14
Page 6 and 7: Dry Weight , mg. Fig. 7. Correlatio
Page 8 and 9: Table 11. Caloric values per g dry
Page 10 and 11: Talbe IV. Oxygen consumption given
Page 12 and 13: etween the sexes during the respira
Page 14 and 15: 128 A. Fjellberg Fig. 2. A. sefiten
Page 16 and 17: 130 A. Fjellberg HABITATS Until now
Page 18 and 19: 132 L. Semme the autumn. The prelim
Page 20 and 21: '~0~1-0611 '96 'lourouy 'uu3 's3asu
Page 24 and 25: 138 J. E. Brittain period was longe
Page 26 and 27: 140 J. E. Brittain Table 11. Ph~sic
Page 28 and 29: 142 J. E. Brittain Table IV. Physic
Page 30 and 31: 144 J. E. Brittain EPHEMEROPTERA Am
Page 32 and 33: 146 J. E. Brittain 0-3 NYMPHS I I 1
Page 34 and 35: 148 J. E. Brittain 1-3 NYMPHS 01 I
Page 36 and 37: 150 J. E. Brittain Nemzlrella picte
Page 38 and 39: 152 J. E. Brittain ture and the inc
Page 40 and 41: (Nord-Norwegen) (Trichoptera, Pleco
Page 42 and 43: 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
Page 54 and 55: 168 7. R. Nielsen K L M N Fig. l. O
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
Page 75:
Microrespirometer 189 termination o
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 94 and 95:
Table V. Species distribution in se
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
Page 102 and 103:
Z 0 ...... ~ '"s' '" ~ .... '.xl ~
Page 104 and 105:
Table IX. Species distribution in s
Page 106 and 107:
220 A. Lillehammer same latitude as
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
Page 118 and 119:
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
238 A. Lillehammer high altitude la
Page 126 and 127:
Page 128 and 129:
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
Page 140 and 141:
N orsk Entomologisk Tidsskrift Norw
Page 142 and 143:
SHORT COMMUNICATIONS C. van Achterb
Page 144:
publications on sale from Norsk Ent
show all

Full-text - Norsk entomologisk forening

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?