Alien amphipods (Arthopoda; Crustacea) in the Tista Estuary, Halden, southeastern Norway by Ingvar Spikkeland, Jens Petter Nilssen

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Superficial ecosystem similarities vs autecological stripping: the "twin species" Mesocyclops leuckarti (Claus) and Thermocyclops oithonoides (Sars) - seasonal habitat utilisation... by Svein Birger WÆRVÅGEN, Jens Petter NILSSEN

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Life histories and seasonal dynamics of common boreal pelagic copepods (Crustacea, Copepoda) inhabiting an oligotrophic Fennoscandian lake by Svein Birger WÆRVÅGEN, Jens Petter NILSSEN

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Ecological distribution of pelagic copepods and species relationship to acidification, liming and natural recovery in a boreal area by Svein Birger WÆRVÅGEN, Jens Petter NILSSEN

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Seasonal dynamics and life histories of pelagic cladocerans (Crustacea; Cladocera) in an acid boreal lake by Jens Petter NILSSEN, Svein Birger WÆRVÅGEN

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The invasive amphipod Gammarus tigrinus Sexton, 1939 conquering the north of Europe using a new pathway: the first recordings from Norway by Ingvar Spikkeland, Jørn Bøhmer Olsen, Ragnar Kasbo, Kjell Magne Olsen, Jens Petter Nilssen

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Passenger for millenniums: association between stenothermic microcrustacean and suctorian epibiont - the case of Eurytemora lacustris and Tokophyra sp by Łukasz Sługocki, Maciej Karpowicz, Agnieszka Kaczmarczyk-Ziemba, Joanna Kozłowska, Ingvar Spikkeland, Jens Petter Nilssen

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