Publications

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enterobacter cloacae with a novel variant of act ampc beta-lactamase originating from glaucous gull (larus hyperboreus) in svalbard.we aimed at escherichia coli and enterobacter cloacae isolates resistant to cephalosporins and fluoroquinolones and salmonella isolates in wild birds in arctic svalbard, norway. cloacal swabs of little auks (alle alle, n=215) and samples of faeces of glaucous gulls (larus hyperboreus, n=15) were examined. inducible production of ampc enzyme was detected in e. cloacae kw218 isolate. sequence analysis of the 1146 bp pcr product of the ampc gene from this isolate revealed 99% sequence homology with ...201424629772
adverse foraging conditions may impact body mass and survival of a high arctic seabird.tradeoffs between current reproduction and future survival are widely recognized, but may only occur when food is limited: when foraging conditions are favorable, parents may be able to reproduce without compromising their own survival. we investigated these tradeoffs in the little auk (alle alle), a small seabird with a single-egg clutch. during 2005-2007, we examined the relationship between body mass and survival of birds breeding under contrasting foraging conditions at two arctic colonies. ...201121445685
effect of diet, location and sampling year on bioaccumulation of mercury, selenium and cadmium in pelagic feeding seabirds in svalbard.hepatic concentrations of mercury (hg), selenium (se) and cadmium (cd) were determined in black-legged kittiwakes (rissa tridactyla) and little auks (alle alle) from two fjords in svalbard (kongsfjorden; 78°57'n, 12°12'e and liefdefjorden; 79°37'n, 13°20'e). the inflow of arctic and atlantic water differs between the two fjords, potentially affecting element accumulation. trophic positions (tp) were derived from stable nitrogen isotope ratios (δ(15)n), and stable carbon isotope ratios (δ(13)c) w ...201525441931
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