Zobrazeno 51 - 60
of 133
pro vyhledávání: '"Per Fauchald"'
Publikováno v:
Evolution and Human Behavior. 31:246-258
While there is a general assumption that labour has a positive effect on pastoral production, studies that have quantified this relationship have been characterized by ambiguous results. This is most likely related to the fact that possible cooperati
Publikováno v:
Ecology. 90:3197-3208
The purpose of the present study was to inspect the response of the Atlantic Puffin (Fratercula arctica) to an experimental manipulation of the investment needed to successfully raise an offspring. We achieved this by replacing an old offspring with
Autor:
Per Fauchald
Publikováno v:
Marine Ecology Progress Series. 391:139-151
The Ideal Free Distribution theory predicts a close spatial match between predators and prey. Studies have shown that seabird and prey distribution seldom conforms with this prediction. In this study, I review recent theoretical advances in spatial p
Publikováno v:
Oikos. 118:837-852
In a previous experiment we have documented that organisms adopt a risk-sensitive reproductive allocation when summer reproductive investment competes with survival in the coming winter (Bardsen et al. 2008). This tradeoff is present through autumn f
Publikováno v:
Acta Medica Scandinavica. 219:47-52
In six patients with therapy-resistant cardiac edema, ultrafiltration on two consecutive days removed on an average 7750 ml fluid and reduced body weight by 7.3 kg. A difference between the mean ultrafiltration rate (17.4 ml/min) and the calculated p
Publikováno v:
Human Ecology. 37:193-211
While there is a general assumption that labor has a positive effect on pastoral production, studies that have tried to quantify this relationship have found no effects. This is most likely because these studies have been looking for effects only at
Publikováno v:
The Auk. 125:723-730
Survival from fledging to maturity is an important life-history parameter in long-lived species such as seabirds. However, because of the long period of unobservability following fledging, few studies have reported reliable estimates of survival rate
Publikováno v:
Journal of Marine Systems. 71:223-236
We review recent progresses made in the study of fish distribution and survival over space — i.e., fisheries spatial ecology. This is achieved by first surveying the most common statistical approaches and relative challenges associated with the ana
Autor:
Torkild Tveraa, Nigel G. Yoccoz, Per Fauchald, Rolf A. Ims, Kari Anne Bråthen, Vera Helene Hausner
Publikováno v:
Ecosystems. 10:773-789
Abundant large herbivores can strongly alter vegetation composition, shifting the ecosystem into a lasting state of changed productivity. Previous studies of the effects of abundant reindeer on alpine and arctic vegetation have yielded equivocal resu
Autor:
Kari Anne Bråthen, Nigel G. Yoccoz, Vera Helene Hausner, Rolf A. Ims, Per Fauchald, Torkild Tveraa
Publikováno v:
Ecosystems. 10:607-622
The region Finnmark, in northernmost Europe, harbors dense populations of semi-domestic reindeer of which some exhibit characteristics of overabundance. Whereas overabundance is evident in terms of density-dependent reductions in reindeer body mass,