Blar i Scientific publications på forfatter "Hesthagen, Trygve"
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Occurrence of the European eel in lakes in the northern part of its distribution area is limited to low-altitude coastal areas, likely due to topographical conditions
Foldvik, Anders; Ulvan, Eva M.; Thorstad, Eva B.; Hesthagen, Trygve (Peer reviewed; Journal article, 2019)With the decline of the European eel, protection measures in all parts of the eel’s distribution area may be increasingly important. Norway has a vast coastline (58°–71°N), but the distribution of eel has been largely ... -
Recovery of young brown trout (Salmo trutta) in acidified streams: What are the critical values for acid-neutralizing capacity?
Hesthagen, Trygve; Fiske, Peder; Saksgård, Randi (Journal article; Peer reviewed, 2016)The recovery of young allopatric brown trout (Salmo trutta) grouped into YoY (age 0þ) and older parr (age 1þ) fish, was studied in acid-sensitive streams in a Norwegian watershed during a 24-year-period (1987e2010). ... -
The viability of the crustacean Eurycercus lamellatus (Branchiopoda, Cladocera) in a high mountain area in southern Norway
Qvenild, Tore; Hesthagen, Trygve (Journal article, 2020)The branchiopod Eurycercus lamellatus is widely distributed in Norwegian lakes, ranging from coastal to alpine areas. On the Hardangervidda mountain plateau in southern Norway, E. lamellatus was searched for in 144 lakes ...