Consulta: creatorFacets:"Dieckmann, Ulf"
Registros recuperados: 6
Data/hora: 11/06/2024 05:21:07

Ecology - Managing evolving fish stocks
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Jorgensen, Christian; Enberg, Katja; Dunlop, Erin S.; Arlinghaus, Robert; Boukal, David S.; Brander, Keith; Ernande, Bruno; Gardmark, Anna; Johnston, Fiona; Matsumura, Shuichi; Pardoe, Heidi; Raab, Kristina; Silva, Alexandra; Vainikka, Anssi; Dieckmann, Ulf; Heino, Mikko; Rijnsdorp, Adriaan D.
Evolutionary impact assessment is introduced as a framework for quantifying the effects of 29 harvest-induced evolution on the utility generated by fish stocks.
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3302.pdf

Impact of Environmental Covariation in Growth and Mortality on Evolving Maturation Reaction Norms
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Marty, Lise; Dieckmann, Ulf; Rochet, Marie-joelle; Ernande, Bruno.
Maturation age and size have important fitness consequences through their effects on survival probabilities and body sizes. The evolution of maturation reaction norms in response to environmental covariation in growth and mortality is therefore a key subject of life-history theory. The eco-evolutionary model we present and analyze here incorporates critical features that earlier studies of evolving maturation reaction norms have often neglected: the trade-off between growth and reproduction, source-sink population structure, and population regulation through density-dependent growth and fecundity. We report the following findings. First, the evolutionarily optimal age at maturation can be decomposed into the sum of a density-dependent and a...
Tipo: Text
Palavras-chave: Phenotypic plasticity; Growth-reproduction trade-off; Source-sink population structure; Density dependence; Selection gradient.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14607/11988.pdf

Evolutionary impact assessment: accounting for evolutionary consequences of fishing in an ecosystem approach to fisheries management
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Laugen, Ane; Engelhard, Georg; Whitlock, Rebecca; Arlinghaus, Robert; Dankel, Dorothy J.; Dunlop, Erin S.; Eikeset, Anne M.; Enberg, Katja; Jorgensen, Christian; Matsumura, Shuichi; Nussle, Sebastien; Urbach, Davnah; Baulier, Loic; Boukal, David S.; Ernande, Bruno; Johnston, Fiona D.; Mollet, Fabian; Pardoe, Heidi; Therkildsen, Nina O.; Uusi-heikkilae, Silva; Vainikka, Anssi; Heino, Mikko; Rijnsdorp, Adriaan D.; Dieckmann, Ulf.
Managing fisheries resources to maintain healthy ecosystems is one of the main goals of the ecosystem approach to fisheries (EAF). While a number of international treaties call for the implementation of EAF, there are still gaps in the underlying methodology. One aspect that has received substantial scientific attention recently is fisheries-induced evolution (FIE). Increasing evidence indicates that intensive fishing has the potential to exert strong directional selection on life-history traits, behaviour, physiology, and morphology of exploited fish. Of particular concern is that reversing evolutionary responses to fishing can be much more difficult than reversing demographic or phenotypically plastic responses. Furthermore, like climate change, multiple...
Tipo: Text
Palavras-chave: Ecosystem approach to fisheries; Ecosystem services; Fisheries yield; Fisheries-induced evolution; Impact assessment; Sustainable fisheries.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00124/23522/21409.pdf

Can fisheries-induced evolution shift reference points for fisheries management?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Heino, Mikko; Baulier, Loic; Boukal, David S.; Ernande, Bruno; Johnston, Fiona D.; Mollet, Fabian M.; Pardoe, Heidi; Therkildsen, Nina O.; Uusi-heikkila, Silva; Vainikka, Anssi; Arlinghaus, Robert; Dankel, Dorothy J.; Dunlop, Erin S.; Eikeset, Anne Maria; Enberg, Katja; Engelhard, Georg; Jorgensen, Christian; Laugen, Ane; Matsumura, Shuichi; Nussle, Sebastien; Urbach, Davnah; Whitlock, Rebecca; Rijnsdorp, Adriaan D.; Dieckmann, Ulf.
Biological reference points are important tools for fisheries management. Reference points are not static, butmay change when a population's environment or the population itself changes. Fisheries-induced evolution is one mechanism that can alter population characteristics, leading to "shifting" reference points by modifying the underlying biological processes or by changing the perception of a fishery system. The former causes changes in "true" reference points, whereas the latter is caused by changes in the yardsticks used to quantify a system's status. Unaccounted shifts of either kind imply that reference points gradually lose their intended meaning. This can lead to increased precaution, which is safe, but potentially costly. Shifts can also occur in...
Tipo: Text
Palavras-chave: Biological reference points; Fisheries-induced evolution; Fisheries management; Population dynamics; Precautionary approach; Uncertainty.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00151/26228/24302.pdf

Reproductive investment in Atlantic cod populations off Newfoundland: Contrasting trends between males and females
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Baulier, Loic; Morgan, M. Joanne; Lilly, George R.; Dieckmann, Ulf; Heino, Mikko.
Life history theory predicts selection for higher reproductive investment in response to increased mortality among mature individuals. We tested this prediction over the period from 1978 to 2013 for three populations of Atlantic cod (Gadus morhua) off Newfoundland. These populations were heavily fished for a long period. We considered changes in standardized gonad weight as a proxy for changes in gonadal investment. We accounted for the allometry between gonad and body weight, individual body condition, water temperature, and potential spatial and density-dependent effects. Males display significant temporal trends in gonadal investment in all populations; in agreement with theoretical predictions, these trends show increased gonadal investments during the...
Tipo: Text
Palavras-chave: Reproductive investment; Fisheries-induced evolution; Atlantic cod; Gonad weight.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00400/51111/51893.pdf

Fisheries-induced neutral and adaptive evolution in exploited fish populations and consequences for their adaptive potential
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Marty, Lise; Dieckmann, Ulf; Ernande, Bruno.
Fishing may induce neutral and adaptive evolution affecting life-history traits, and molecular evidence has shown that neutral genetic diversity has declined in some exploited populations. Here we theoretically study the interplay between neutral and adaptive evolution caused by fishing. An individual-based eco-genetic model is devised that includes neutral and functional loci in a realistic ecological setting. In line with theoretical expectations, we find that fishing induces evolution towards slow growth, early maturation at small size, and higher reproductive investment. We show, first, that the choice of genetic model (based on either quantitative genetics or gametic inheritance) influences the evolutionary recovery of traits after fishing ceases....
Tipo: Text
Palavras-chave: Eco-genetic model; Effective population size; Fisheries-induced evolution; Genetic drift; Genetic erosion; Genetic markers; Life-history traits; Natural selection and contemporary evolution.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00228/33964/33473.pdf