Erik Ropstad
Erik Ropstad
Unknown affiliation
Verified email at NMBU.NO
Title
Cited by
Cited by
Year
Effects of heat stress and plane of nutrition on lactating Holstein cows: I. Production, metabolism, and aspects of circulating somatotropin
ML Rhoads, RP Rhoads, MJ VanBaale, RJ Collier, SR Sanders, ...
Journal of dairy science 92 (5), 1986-1997, 2009
5642009
Reproductive and developmental toxicity of phthalates
JL Lyche, AC Gutleb, Å Bergman, GS Eriksen, ATJ Murk, E Ropstad, ...
Journal of Toxicology and Environmental Health, Part B 12 (4), 225-249, 2009
4542009
The role of parasites in the dynamics of a reindeer population
SD Albon, A Stien, RJ Irvine, R Langvatn, E Ropstad, O Halvorsen
Proceedings of the Royal Society of London. Series B: Biological Sciences …, 2002
3532002
The impact of gastrointestinal nematodes on wild reindeer: experimental and cross‐sectional studies
A Stien, RJ Irvine, E Ropstad, O Halvorsen, R Langvatn, SD Albon
Journal of Animal Ecology 71 (6), 937-945, 2002
1892002
Endocrine disrupting effects of zearalenone, alpha-and beta-zearalenol at the level of nuclear receptor binding and steroidogenesis
C Frizzell, D Ndossi, S Verhaegen, E Dahl, G Eriksen, M Sørlie, ...
Toxicology Letters 206 (2), 210-217, 2011
1782011
Polychlorinated biphenyls and reproductive hormones in female polar bears at Svalbard.
M Haave, E Ropstad, AE Derocher, E Lie, E Dahl, Ø Wiig, JU Skaare, ...
Environmental health perspectives 111 (4), 431-436, 2003
1532003
Organochlorines affect the major androgenic hormone, testosterone, in male polar bears (Ursus maritimus) at Svalbard
IC Oskam, E Ropstad, E Dahl, E Lie, AE Derocher, ⊘ ystein Wiig, ...
Journal ofToxicology and Environmental Health, Part A 66 (22), 2119-2139, 2003
1432003
Evaluation of spermatological parameters used to predict the fertility of frozen bull semen
H Kjoestad, E Ropstad, KA Berg
Acta Veterinaria Scandinavica 34 (3), 299-303, 1993
1331993
A comparative study of reproductive performance in organic and conventional dairy husbandry
O Reksen, A Tverdal, E Ropstad
Journal of dairy science 82 (12), 2605-2610, 1999
1261999
Organochlorines affect the steroid hormone cortisol in free-ranging polar bears (Ursus maritimus) at Svalbard, Norway
I Oskam, E Ropstad, E Lie, A Derocher, Ø Wiig, E Dahl, S Larsen, ...
Journal of Toxicology and Environmental Health 67 (12), 959-977, 2004
1082004
Serosurvey for Toxoplasma gondii in arctic foxes and possible sources of infection in the high Arctic of Svalbard
KW Prestrud, K Åsbakk, E Fuglei, T Mørk, A Stien, E Ropstad, M Tryland, ...
Veterinary parasitology 150 (1-2), 6-12, 2007
1062007
Congruent responses to weather variability in high arctic herbivores
A Stien, RA Ims, SD Albon, E Fuglei, RJ Irvine, E Ropstad, O Halvorsen, ...
Biology letters 8 (6), 1002-1005, 2012
1052012
Contrasting effects of summer and winter warming on body mass explain population dynamics in a food‐limited Arctic herbivore
SD Albon, RJ Irvine, O Halvorsen, R Langvatn, LE Loe, E Ropstad, ...
Global change biology 23 (4), 1374-1389, 2017
912017
Organohalogen contamination in breeding glaucous gulls from the Norwegian Arctic: Associations with basal metabolism and circulating thyroid hormones
J Verreault, C Bech, RJ Letcher, E Ropstad, E Dahl, GW Gabrielsen
Environmental Pollution 145 (1), 138-145, 2007
842007
In Vitro Assay Shows That PCB Metabolites Completely Saturate Thyroid Hormone Transport Capacity in Blood of Wild Polar Bears (Ursus maritimus)
AC Gutleb, P Cenijn, M Velzen, E Lie, E Ropstad, JU Skaare, T Malmberg, ...
Environmental science & technology 44 (8), 3149-3154, 2010
832010
Natural mixtures of POPs affected body weight gain and induced transcription of genes involved in weight regulation and insulin signaling
JL Lyche, R Nourizadeh-Lillabadi, C Karlsson, B Stavik, V Berg, JU Skåre, ...
Aquatic toxicology 102 (3-4), 197-204, 2011
762011
Levels of milk urea, plasma constituents and rumen liquid ammonia in relation to the feeding of dairy cows during early lactation
E Ropstad, L Vik-Mo, AO Refsdal
Acta Veterinaria Scandinavica 30 (2), 199-208, 1989
761989
Valproate inhibits the conversion of testosterone to estradiol and acts as an apoptotic agent in growing porcine ovarian follicular cells
E Taubøll, EL Gregoraszczuk, A Kołodziej, M Kajta, E Ropstad
Epilepsia 44 (8), 1014-1021, 2003
742003
Science and policy on endocrine disrupters must not be mixed: a reply to a “common sense” intervention by toxicology journal editors
Å Bergman, AM Andersson, G Becher, M Van den Berg, B Blumberg, ...
Environmental Health 12 (1), 1-4, 2013
702013
Ecological risk assessment of persistent organic pollutants in the arctic
JU Skaare, HJ Larsen, E Lie, A Bernhoft, AE Derocher, R Norstrom, ...
Toxicology 181, 193-197, 2002
692002
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