Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Jan Økland"'
Publikováno v:
Crustaceana. 84:701-706
[From the deepest layers of the large Lake Eikeren in southern Norway, 48 specimens of an amphipod were collected. Species identification by morphological keys gave as a result Gammarus zaddachi Sexton, 1912. In Europe, this species is only known fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::486d428b95396d9fb68260dc6d4c580d
https://doi.org/10.1163/001121611x574263
https://doi.org/10.1163/001121611x574263
Autor:
Karen Anna Økland, Jan Økland
Publikováno v:
Hydrobiologia. 534:31-55
The paper is based on material presented in five contributions [Hydrobiologia 421:1–24, 2000; 459: 103–123, 2001; 479: 11–22, 2002; 501: 179–198, 2003; Archives de l’Institut grand-ducal de Luxembourg. Section des Sciences naturelles, physi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6de650b36591818f4b58f924fef4a633
https://doi.org/10.1007/s10750-004-1320-5
https://doi.org/10.1007/s10750-004-1320-5
Publikováno v:
Hydrobiologia. 501:179-198
Bryozoans were investigated during field studies of 601 lakes and other surface water bodies throughout Norway from 1960 to 1978. The frequency of occurrence of Plumatella repens was evaluated in relation to 12 environmental variables. Statistically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4fdb8d2edbc72c010f759c31bf392ca
https://doi.org/10.1023/a:1026244101302
https://doi.org/10.1023/a:1026244101302
Autor:
Karen Anna Økland, Jan Økland
Publikováno v:
Hydrobiologia. 479:11-22
Bryozoans were investigated during field studies of 601 lakes and other surface water bodies throughout Norway from 1960 to 1978. The frequency of occurrence of Plumatella fruticosawas evaluated in relation to 12 environmental variables. Statisticall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6417914ea84d206deeb62a9b060d2437
https://doi.org/10.1023/a:1021060027225
https://doi.org/10.1023/a:1021060027225
Autor:
Karen Anna Økland, Jan Økland
Publikováno v:
Hydrobiologia. 459:103-123
Freshwater bryozoans were investigated during field studies of 601 lakes and other surface water bodies throughout Norway from 1960 to 1978. The frequency of occurrence of the two Fredericella species was evaluated in relation to 12 environmental var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a30f6e10808892680ba27ca8bca0a3a8
https://doi.org/10.1023/a:1012558524160
https://doi.org/10.1023/a:1012558524160
Autor:
Karen Anna Økland, Jan Økland
Publikováno v:
Hydrobiologia. 421:1-24
Bryozoans were investigated during field studies of 601 lakes and other surface water bodies throughout Norway from 1960 to 1978. Material from other sources was also included in the study. Twelve environmental factors were registered. The frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2128912530cdeb7aaef1b230f5cf6afb
https://doi.org/10.1023/a:1003917200848
https://doi.org/10.1023/a:1003917200848
Autor:
Jan Økland, Karen Anna Økland
Publikováno v:
Hydrobiologia. 330:1-30
Sponges were investigated during field studies of 609 lakes and other surface water bodies throughout Norway from 1960 to 1989. Material from other sources was also included in the study. Twelve environmental factors were registered. The presence or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33536f00172e67fc75b92b4376fbfb4c
https://doi.org/10.1007/bf00020819
https://doi.org/10.1007/bf00020819
Autor:
Jan Økland
Publikováno v:
Environmental pollution (Barking, Essex : 1987). 78(1-3)
This paper summarizes some results from a monograph which focused on ecological and biogeographical aspects of the biota in Norwegian lakes and rivers with particular reference to the snail fauna. Field studies were made in the course of 20 summers w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2135c810954943848d72f251417fedd5
https://pubmed.ncbi.nlm.nih.gov/15091938
https://pubmed.ncbi.nlm.nih.gov/15091938
Autor:
Jan Økland
Publikováno v:
Hydrology Research. 11:25-32
In 50 lakes in south-eastern Norway hydrogen-ion concentration (pH) and total hardness (°dH) were measured in surface water in the 1950's and then once again 10 years later. Significant acidification was observed. In the total material average pH dr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e77ee766757eb1ff0ce91f275f30464
https://doi.org/10.2166/nh.1980.0003
https://doi.org/10.2166/nh.1980.0003
Autor:
Jan Økland, Karen Anna Økland
Publikováno v:
Oecologia. 66:364-367
The enormous variation in the environmental factors of south-eastern Norway makes this area particularly suitable for field studies on the relationship between environmental factors and fauna. Lakes are abundant, from 1 to 1,837 m a.s.l., and the geo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8458bcb99940d0c4437bb4c45c31c437
https://doi.org/10.1007/bf00378299
https://doi.org/10.1007/bf00378299