Blar i Artikkel - fagfellevurdert vitenskapelig / Articles - peer-reviewed på forfatter "Nielsen, Olafur K."
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Lek site defines annual spatial use of male Black Grouse (Tetrao tetrix)
Borecha, Degitu Endale; Willebrand, Tomas; Nielsen, Olafur K. (Journal article; Peer reviewed, 2017)Adult male Black Grouse ( Tetrao tetrix ) are assumed to use the same lek throughout their life-span and juveniles are rarely observed settling far from their natal areas. Here we re- port results on a study of lek ... -
Low activities of digestive enzymes in the guts of herbivorous grouse (Aves: Tetraoninae)
Newman, Julianne; Maurer, Maya; Forbey, Jennifer S.; Brittas, Rolf; Johansson, Örjan; Nielsen, Olafur K.; Willebrand, Tomas; Kohl, Kevin D. (Peer reviewed; Journal article, 2021)Avian herbivores face the exceptional challenge of digesting recalcitrant plant material while under the selective pressure to reduce gut mass as an adaptation for fight. One mechanism by which avian herbivores may overcome ...