Blar i Bergen Open Research Archive på forfatter "Heegaard, Einar"
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Cerebral gene expression and neurobehavioural development after perinatal exposure to an environmentally relevant polybrominated diphenylether (BDE47)
Haave, Marte; Folven, Kristin Ingvaldsen; Carroll, Thomas; Glover, Chris; Heegaard, Einar; Brattelid, Trond; Hogstrand, Christer; Lundebye, Anne-Katrine (Peer reviewed; Journal article, 2011-06-02)Nutrients in seafood are known to be beneficial for brain development. Effects of maternal exposure to 2,2′,4,4′ tetrabromo diphenylether (BDE47) was investigated, alongside the potential ameliorating impact of seafood ... -
Effects of simulated environmental changes on growth and growth form in a late snowbed population of pohlia wahlenbergii (Web. et Mohr) Andr
Sandvik, Sylvi M.; Heegaard, Einar (Peer reviewed; Journal article, 2003)In a factorial field experiment we increased the temperature (OpenTop Chambers) and nutrients (nitrogen, phosphorus, and potassium[NPK]) to simulate predicted future climate changes and studiedthe growth response of the ... -
The intercept is a poor estimate of a calibrated radiocarbon age
Telford, Richard J.; Heegaard, Einar; Birks, Harry John Betteley (Peer reviewed; Journal article, 2004)Intercept-based methods of generating a point estimate of a calibrated radiocarbon date are very popular, but exhibit undesirable behaviour. They are highly sensitive to the mean of the radiocarbon date and to adjustments ... -
Long-term effects of environmentally relevant doses of 2,2’,4,4’,5,5’ hexachlorobiphenyl (PCB153) on neurobehavioural development, health and spontaneous behaviour in maternally exposed mice
Haave, Marte; Bernhard, Annette; Jellestad, Finn K.; Heegaard, Einar; Brattelid, Trond; Lundebye, Anne-Katrine (Peer reviewed; Journal article, 2011-01-13)Background: Polychlorinated biphenyls (PCBs) are widespread in the environment, human food and breast milk. Seafood is known to contain nutrients beneficial for the normal development and function of the brain, but also ... -
Management-driven evolution in a domesticated ecosystem
Vandvik, Vigdis; Töpper, Joachim Paul; Cook, Zoë; Daws, Matthew I.; Heegaard, Einar; Måren, Inger Elisabeth; Velle, Liv Guri (Peer reviewed; Journal article, 2014-02-12)Millennia of human land-use have resulted in the widespread occurrence of what have been coined ‘domesticated ecosystems’. The anthropogenic imprints on diversity, composition, structure and functioning of such systems are ... -
Open-source data reveal how collections-based fungal diversity is sensitive to global change
Andrew, Carrie Joy; Büntgen, Ulf; Egli, Simon; Senn-Irlet, Beatrice; Grytnes, John-Arvid; Heilmann-Clausen, Jacob; Boddy, Lynne; Bässler, Claus; Gange, Alan C.; Heegaard, Einar; Høiland, Klaus; Kirk, Paul M.; Krisai-Greilhüber, Irmgard; Kuyper, Thomas W.; Kauserud, Håvard (Peer reviewed; Journal article, 2019)Premise of the Study Fungal diversity (richness) trends at large scales are in urgent need of investigation, especially through novel situations that combine long‐term observational with environmental and remotely sensed ... -
Red List updates and the robustness of sites selected for conservation of red-listed species
Gjerde, Ivar; Grytnes, John-Arvid; Heegaard, Einar; Sætersdal, Magne; Tingstad, Lise (Peer reviewed; Journal article, 2018-10-11)The long-term success of sites selected for species conservation depends on the persistence of target species. Red List species or threatened species lists are frequently defined as target species, but when Red Lists are ... -
Relationships between calibrated ages and depth in stratigraphical sequences: an estimation procedure by mixed-effect regression
Heegaard, Einar; Birks, Harry John Betteley; Telford, Richard J. (Peer reviewed; Journal article, 2005)We present a procedure for estimating age-depth relationships in stratigraphical sequences by means of a generalized mixed-effect regression using an ancillary function for the partitioning of the fixed effect and the ... -
Species trait selection along a prescribed fire chronosequence
Bargmann, Tessa; Heegaard, Einar; Hatteland, Bjørn Arild; Chipperfield, Joseph; Grytnes, John-Arvid (Peer reviewed; Journal article, 2016-09)1. Fire is a widespread management practice used in the maintenance of European heathland. Frequent prescribed burns in small patches have been shown to benefit carabid communities; however, how fire favours specific ... -
Tracing recovery from acidification in the Western Norwegian nausta watershed
Halvorsen, Godtfred A.; Heegaard, Einar; Fjellheim, Arne; Raddum, Gunnar G. (Journal article; Peer reviewed, 2003)A novel method, redundancy analysis (RDA), has been used to examine whether chemical recovery from acidification in the western Norwegian Nausta watershed produces detectable recovery within the community structure of the ... -
What is the observed relationship between species richness and productivity? Comment
Whittaker, Robert J.; Heegaard, Einar (Journal article, 2003) -
Willow canopies and plant community structure along an alpine environmental gradient
Totland, Ørjan; Grytnes, John-Arvid; Heegaard, Einar (Peer reviewed; Journal article, 2005)We examined the impact of Salix lapponum canopies on plantcommunity structure in five sites along a climatic gradient in aglacier foreland in alpine south Norway. Species richness is lowerinside canopies compared to outside ...