Blar i Articles på forfatter "Nash, Richard D.M."
-
Birth-date selection in early life stages of plaice Pleuronectes platessa in the eastern Irish Sea (British Isles)
Fox, Clive J.; Geffen, Audrey J.; Taylor, Natasha; Davison, Phil; Rossetti, Helen; Nash, Richard D.M. (Journal article; Peer reviewed, 2007-09-13)For species with extended spawning seasons, short periods of beneficial conditions often lead to disproportionate survival of sub-sets of the offspring. This has been demonstrated for freshwater fish and for marine pelagic ... -
The concept of fecundity regulation in plaice (Pleuronectes platessa) tested on three Irish Sea spawning populations
Kennedy, James; Witthames, Peter R.; Nash, Richard D.M. (Journal article; Peer reviewed, 2007)The fecundity of European plaice (Pleuronectes platessa) in the Irish Sea between 2000 and 2004 was estimated during the spawning season for fish in the three main spawning areas (Liverpool Bay, the Cumbrian coast, and the ... -
Dynamics of shallow-water juvenile flatfish nursery grounds: application of the self-thinning rule
Nash, Richard D.M.; Geffen, Audrey J.; Burrows, Michael T.; Gibson, Robin N. (Journal article; Peer reviewed, 2007-08-23)Annual development of density and mean weight of juvenile plaice Pleuronectes platessa was examined at 2 nursery grounds (Port Erin Bay, Isle of Man, Irish Sea and Admucknish Bay, Firth of Lorne, west coast of Scotland) ... -
Fecundity and growth of Atlantic cod (Gadus morhua L.) along a latitudinal gradient
Thorsen, Anders; Witthames, Peter R.; Marteinsdottir, Gudrun; Nash, Richard D.M.; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2010-05)Some fish species have wide distribution areas that span very different habitats. In this investigation we have studied Atlantic cod (Gadus morhua), which is an example of such a species, to demonstrate how this may have ... -
Liver energy, atresia and oocyte stage influence fecundity regulation in Northeast Arctic cod
Skjæraasen, Jon Egil; Nash, Richard D.M.; Kennedy, James; Thorsen, Anders; Nilsen, Trygve; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2010-04-08)Marine ecosystems are changing; global warming-induced increases in water temperatures and fishing have caused truncated age structures and small sizes at maturity in many stocks. This may affect both populations’ total ... -
Long-term changes in the total egg production of Norwegian spring-spawning herring Clupea harengus (L.)—Implications of variations in population structure and condition factor
Ndjaula, Hilkka O.N.; Nash, Richard D.M.; Slotte, Aril; Johannessen, Arne; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2010-05)The reproductive potential of Norwegian spring-spawning herring (Clupea harengus) was estimated in terms of total egg production (TEP) for the period 1935–2005, using a model where spawning stock numbers (SSN)-, weight- ... -
Recruitment decline in North Sea herring is accompanied by reduced larval growth rates
Payne, Mark R.; Ross, Stine D.; Clausen, Lotte Worsøe; Munk, Peter; Mosegaard, Henrik; Nash, Richard D.M. (Journal article; Peer reviewed, 2013-08-28)The stock of North Sea autumn spawning herring Clupea harengus (L.) has shown an unprecedented 10 yr sequence of sharply reduced recruitment, in spite of a high spawning biomass. Recent work has identified this below-expected ... -
Seasonal Dynamics of Atlantic Herring (Clupea harengus L.) Populations Spawning in the Vicinity of Marginal Habitats
Eggers, Florian; Slotte, Aril; Libungan, Lisa Anne; Johannessen, Arne; Kvamme, Cecilie; Moland, Even; Olsen, Esben Moland; Nash, Richard D.M. (Journal article; Peer reviewed, 2014-11-05)Gillnet sampling and analyses of otolith shape, vertebral count and growth indicated the presence of three putative Atlantic herring (Clupea harengus L.) populations mixing together over the spawning season February–June ... -
Synergies between climate and management for Atlantic cod fisheries at high latitudes
Kjesbu, Olav Sigurd; Bogstad, Bjarte; Devine, Jennifer A.; Gjøsæter, Harald; Howell, Daniel; Ingvaldsen, Randi; Nash, Richard D.M.; Skjæraasen, Jon Egil (Journal article; Peer reviewed, 2014-02-18)The widespread depletion of commercially exploited marine living resources is often seen as a general failure of management and results in criticism of contemporary management procedures. When populations show dramatic and ... -
Temperature effect on growth and larval duration of plaice Pleuronectes platessa in three regions of the Northeast Atlantic
Comerford, Stephen; Brophy, Deirdre; Fox, Clive J.; Taylor, Natasha; van der Veer, Henk W.; Nash, Richard D.M.; Geffen, Audrey J. (Journal article; Peer reviewed, 2013-02-27)Transport models for planktonic fish eggs and larvae often use temperature to drive growth because temperature data are readily available. This pragmatic approach can be criticised as too simplistic as it ignores additional ... -
Trade-offs between growth and reproduction in wild Atlantic cod
Folkvord, Arild; Jørgensen, Christian; Korsbrekke, Knut; Nash, Richard D.M.; Nilsen, Trygve; Skjæraasen, Jon Egil (Journal article; Peer reviewed, 2014-04-08)Animals partition and trade off their resources between competing needs such as growth, maintenance, and reproduction. Over a lifetime, allocation strategies should result in distinct trajectories for growth, survival, and ...