Blar i NTNU Open på forfatter "Løkken, Jørn Olav"
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Change in vegetation composition and growth in the forest-tundra ecotone – effects of climate warming and herbivory
Løkken, Jørn Olav (Doctoral theses at NTNU;2020:321, Doctoral thesis, 2020)Overgangen mellom tett skog og fjellområder, skog-tundra-økotonen, er globalt sett i stor grad regulert av temperatur. Økt temperatur som følge av klimaendringer forventes å påvirke økotonen, med høydeforflytning av ... -
Limited decadal growth of mountain birch saplings has minor impact on surrounding tundra vegetation
Scharn, Ruud; Negri, Isabel S.; Sundqvist, Maja K.; Løkken, Jørn Olav; Bacon, Christine D.; Antonelli, Alexandre; Hofgaard, Annika; Nilsson, R. Henrik; Björk, Robert G. (Peer reviewed; Journal article, 2022)Temperatures over the Arctic region are increasing at three times the rate of the global average. Consequently, Arctic vegetation is changing and trees are encroaching into the tundra. In this study, we examine the ... -
Vegetation response to climate warming across the forest–tundra ecotone: species-dependent upward movement
Løkken, Jørn Olav; Evju, Marianne; Söderström, Lars; Hofgaard, Eli Annika (Peer reviewed; Journal article, 2020)Questions Rising temperatures are predicted to cause upward shifts and reorganisation of mountain vegetation. This study analyses how field layer vegetation across the forest–tundra ecotone has responded over a 22‐year ...