Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Dieckmann, Ulf"
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Body condition and evolution of maturation of Atlantic cod in Newfoundland
Baulier, Loïc; Heino, Mikko; Lilly, George R.; Dieckmann, Ulf (ICES CM documents, Working paper, 2006)Atlantic cod (Gadus morhua, L.) stocks off Newfoundland and Labrador underwent severe depletions that started in the late 1980s and led to moratoria in the early 1990s. Fisheries closures are still applied in most of the ... -
Eco-genetic models: a new framework for understanding fisheries-induced evolution
Dieckmann, Ulf; Dunlop, Erin S.; Heino, Mikko (ICES CM documents, Working paper, 2006) -
Ecological and Evolutionary Recovery of Exploited Fish Stocks
Enberg, Katja; Dunlop, Erin S.; Heino, Mikko; Dieckmann, Ulf (ICES CM documents, Working paper, 2006) -
Exploitation as a driving force of life history evolution: methods and empirical analyses
Heino, Mikko; Dieckmann, Ulf (ICES CM documents, Working paper, 2004)Today, fishing is the dominant source of mortality in most commercially exploited fish stocks. Life-history theory predicts that, under most circumstances, increased mortality at potential ages and sizes at maturation ... -
Fisheries-Induced Changes in Age and Size at Maturation and Understanding the Potential for Selection-Induced Stock Collapse
Ernande, Bruno; Dieckmann, Ulf; Heino, Mikko (ICES CM documents, Working paper, 2002)Fishing is very likely to create selective pressures inducing adaptive changes in the life histories of harvested stocks. Using field data and adequate statistical methods, such alterations can be demonstrated. However, ... -
Fisheries-induced evolution in cod
Heino, Mikko; Godø, Olav Rune; Dieckmann, Ulf (ICES CM documents;2010/M:24, Working paper, 2010)Over the last eight decades, northeast Arctic cod has shown a marked change towards earlier maturation at smaller sizes. At the same time, harvesting shifted from primarily targeting mature cod in the spawning grounds to ... -
Fisheries-induced evolution in Northeast Arctic cod
Eikeset, Anne Maria; Dunlop, Erin S.; Dieckmann, Ulf (ICES CM documents;2005/AA:16, Working paper, 2005)We explore the evolutionary effects of fisheries on North-East Arctic (NEA) cod. It has earlier been shown that fisheries can change the cod’s age and size at maturation in two ways: first, by reducing the biomass, which ... -
Fisheries-induced evolution of body size and other life history traits: the impact of gear selectivity
Boukal, David S.; Dunlop, Erin S.; Heino, Mikko; Dieckmann, Ulf (ICES CM documents;2008/F:07, Working paper, 2008) -
Fisheries-induced trends in reaction norms for maturation in North Sea plaice
Grift, R.E.; Rijnsdorp, A.D.; Barot, S.; Heino, Mikko; Dieckmann, Ulf (ICES CM documents, Working paper, 2002)We analyse the potential of intensive exploitation to have caused evolutionary changes in the age and length at maturation in North Sea plaice Pleuronectes platessa. Such evolutionary change in the onset of maturation ... -
Implications of fisheries-induced evolution for stock rebuilding and recovery
Enberg, Katja; Jørgensen, Christian; Dunlop, Erin S.; Heino, Mikko; Dieckmann, Ulf (ICES CM documents;2010/M:29, Working paper, 2010)Fishing-induced evolution has the potential to change life-history and other characters of exploited stocks. Here we study the rebuilding and recovery of an exploited stock with en individual-based eco-genetic model ... -
The Propensity of Marine Reserves to Slow the Evolutionary Effects of Fishing
Dunlop, Erin S.; Baskett, Marissa L.; Heino, Mikko; Dieckmann, Ulf (ICES CM documents, Working paper, 2006) -
Reaction norm analysis of fisheries-induced adaptive change and the case of the Northeast Arctic cod
Heino, Mikko; Dieckmann, Ulf; Godø, Olav Rune (ICES CM documents, Working paper, 2002)We present a probabilistic concept of reaction norms for age and size at maturation, and outline methods that can be used for their estimation in typical fisheries data. Such estimations are critical for calibrating size- ... -
Reaction norms for age and size at maturation: study of the long-term trend (1970-1998) for Georges Bank and Gulf of Maine Atlantic cod stocks
Barot, S.; Heino, Mikko; O’Brien, Loretta; Dieckmann, Ulf (ICES CM documents, Working paper, 2002)Average age and size at maturation have decreased in many commercially exploited fish stocks during the last few decades. This phenomenon could be either a direct phenotypic response to some environmental variation, or the ... -
Scientists as facilitators: An objective technique to illustrate a zone of stakeholder consensus
Dankel, Dorothy Jane; Heino, Mikko; Dieckmann, Ulf (ICES CM documents;2009/ O:28, Working paper, 2009)The inherent conflicts between objectives in fisheries management (e.g. yield max-imization vs. conservation interests) often create problems for managers, scientists and stake-holders. However, some seemingly contrasting ... -
Success in fishery management by reconciling stakeholder objectives in Hilborn’s “zone of new consensus”
Dankel, Dorothy Jane; Dieckmann, Ulf; Heino, Mikko (ICES CM documents;2007/O:17, Working paper, 2007)The inherent conflicts between objectives in fisheries management (e.g. MSY vs. conservation interests) are a hurdle for managers and scientists. However, some objectives may be compatible (e.g. economic yield and ecosystem ...