Blar i Brage IMR på forfatter "Engelhard, Georg H."
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Dynamics in frequency of skipped reproduction in Norwegian spring-spawning herring
Engelhard, Georg H.; Heino, Mikko (ICES CM documents, Working paper, 2004)A common presumption in fisheries science is that adult iteroparous fish, once matured, typically spawn in all consecutive years. Recent evidence suggests, however, that skipping of reproduction occurs more commonly than ... -
Maturation characteristics in Norwegian spring-spawning herring before, during, and after a major population collapse
Engelhard, Georg H.; Heino, Mikko (ICES CM documents, Working paper, 2002)The immense Norwegian spring-spawning herring (Clupea harengus) population collapsed to the state of commercial extinction in the late 1960s, probably largely due to overfishing; the stock has fully recovered since the ... -
Maturity changes in Norwegian spring-spawning herring Clupea harengus: compensatory or evolutionary responses?
Engelhard, Georg H.; Heino, Mikko (Journal article; Peer reviewed, 2004-05-19)The stock of Norwegian spring-spawning herring Clupea harengus collapsed to a state of commercial extinction in the 1960s, probably due to both overexploitation and unfavourable climatic conditions. Since the 1980s, the ... -
Variations in the distribution of blue whiting in the Barents Sea: climatic influences or year class effects?
Heino, Mikko; Engelhard, Georg H.; Godø, Olav Rune (ICES CM documents, Working paper, 2003)Blue whiting (Micromesistius poutassou) in the Barents Sea represent the north-eastern fringe of the distribution of the species in the Atlantic. Distribution and abundance of blue whiting in the Barents Sea have fluctuated ...