Full-text - Norsk entomologisk forening
Full-text - Norsk entomologisk forening
Full-text - Norsk entomologisk forening
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248 A. Lillehammer<br />
streams are to a large extent rendered invalid.<br />
The northern areas Kautokeino, Pasvik<br />
and Alta support the highest number of northeastern<br />
species, and the lowland areas in<br />
southern Norway the lowest. The most continental<br />
areas in southern Norway contain<br />
the highest number of north-eastern species,<br />
and the coastal areas of Rogaland and Oslofjord<br />
the lowest.<br />
Generally, distribution of Norwegian stoneflies<br />
seems to be connected with major factors<br />
such as differences in climate, vegetation<br />
region and historical immigration. Mo~<br />
locally, distribution seems to be associated<br />
with factors such as the amount of deciduous<br />
vegetation in the vicinity of the watercourse,<br />
the amount of allochthonous organic matter,<br />
and substratum and temperature.<br />
ACKNOWLEDGEMENTS<br />
I am grateful to Dr. John Brittain, Cand. real.<br />
P. Larsson, Dr. L. Semme and Professor R.<br />
Vik for criticism of the manuscript. I am<br />
indebted to 1. Lund, R. Mostad, F. Smedstad<br />
and E. Vastaberg for technical assistance. I<br />
am much obliged to the following persons<br />
who helped with collecting material or loaned<br />
me material: Chr. Handersen, R. Borgstrem,<br />
R. Dahlby, J. Eie, B. Faafeng, L. Greve, J.<br />
Holmlund, K. Heiby, B. Kinded.s, A. Klemmetsen,<br />
B. Kvitvcer, P. Larsson, L. Lien, M.<br />
Lillehammer, R. Mehl, 1. Munitz, ]. Pedersen,<br />
]. Raastad, ]. Solem, G. Tveit, H.<br />
Walden, G. Westereng and F. Aarefjord.<br />
My sincere appreciation is also extended to<br />
the following for loan of material: Dr. A.<br />
Leken, Zoological Museum, University of<br />
Bergen; J Andersen, Tromse Museum,<br />
Tromse; ]. Solem, The Royal Norwegian<br />
Society of Science and Letters, The Museum,<br />
Trondheim. The investigation was financed<br />
by the Norwegian Research Council for<br />
Science and the Humanities.<br />
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