Pétur M. Jónasson

Trophic specialization in Arctic charr Salvelinus alpinus (Pisces; Salmonidae): morphological divergence and ontogenetic niche shifts

Sigurður S. Snorrason, Skúli Skúlason, Bror Jönsson et al. · Biological Journal of the Linnean Society · 1994 · 261 citations

Biology, Lake Thingvallavatn, Benthic-pelagic Coupling +13

The Arctic Charr Salvelinus alpinus in Thingvallavatn

Odd Terje Sandlund, Karl Gunnarsson, Pétur M. Jónasson et al. · Oikos · 1992 · 243 citations

Diet Differentiation in Polymorphic Arctic Charr in Thingvallavatn, Iceland

Hilmar J. Malmquist, Sigurður S. Snorrason, Skúli Skúlason et al. · Journal of Animal Ecology · 1992 · 216 citations

Life History Variation of Polymorphic Arctic Charr (<i>Salvelinus alpinus</i>) in Thingvallavatn, Iceland

Bror Jönsson, Skúli Skúlason, Sigurður S. Snorrason et al. · Canadian Journal of Fisheries and Aquatic Sciences · 1988 · 149 citations

Animal Taxonomy, Zoological Taxonomy, Fork Length +16

The respiration of some animals from the Profundal Zone of a lake

Kaj Bérg, Pétur M. Jónasson, Kurt W. Ockelmann · Hydrobiologia · 1962 · 110 citations

Biology, Benthic-pelagic Coupling, Zooplankton Ecology +4