Modelling the transport of common sole larvae in the southern North Sea: Influence of hydrodynamics and larval vertical movements

Savina, Marie; Lacroix, Geneviève; Ruddick, Kevin

doi:10.1016/j.jmarsys.2009.12.008

Cited by 45 publications

(58 citation statements)

References 28 publications

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“…Ed wards et al (2007) explored generic larval dispersal off the southeast coast of North America but only found a slight difference among 3 dispersal depths. Also, Savina et al (2010) found little effects of 3 different vertical behaviours in lemon sole larvae in the North Sea. In contrast, biophysical models of scallop larvae around Georges Bank showed strongly re duced dispersal for larvae drifting at deeper depths (e.g.…”

Section: Discussionmentioning

confidence: 90%

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Depth distribution of larvae critically affects their dispersal and the efficiency of marine protected areas

Corell¹,

Moksnes²,

Engqvist³

et al. 2012

Mar. Ecol. Prog. Ser.

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This study aims to improve estimates of dispersal by including information on larval traits, and in particular to explore how larval depth distribution affects connectivity and MPA (marine protected area) functionality in the Baltic Sea. A field survey showed that both invertebrates and fish differed in their larval depth distribution, ranging from surface waters to >100 m. A biophysical model of larval dispersal in the Baltic Sea showed that decreased depth distribution increased average dispersal distance 2.5-fold, decreased coastal retention and local recruitment, and substantially increased connectivity. Together with pelagic larval duration (PLD), depth distribution explained 80% of total variation in dispersal distance, whereas spawning season, and geographic and annual variations in circulation had only marginal effects. Median dispersal distances varied between 8 and 46 km, with 10% of simulated trajectories dispersing 30 to 160 km depending on drift depth and PLD. In the Baltic Sea, the majority of shallow Natura 2000 MPAs are < 8 km in diameter. In the present study, only 1 of the 11 assessed larval taxa would have a recruitment >10% within MPAs of this size. Connectivity between MPAs was expected to be low for most larval trait combinations. Our simulations and the empirical data suggest that the MPA size within the Natura 2000 system is considerably below what is required for local recruitment of most sessile invertebrates and sedentary fish. Future designs of MPA networks would benefit from spatially explicit biophysical models that consider dispersal and connectivity for complex circulation patterns and informed larval traits.

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Section: Discussionmentioning

confidence: 90%

“…Bolle et al 2009, Incze et al 2010, Savina et al 2010. More general studies have explored how dispersal distance is affected by larval vertical behaviour (e.g.…”

Section: Introductionmentioning

confidence: 99%

Depth distribution of larvae critically affects their dispersal and the efficiency of marine protected areas

Corell¹,

Moksnes²,

Engqvist³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…The great majority of published work on planktonic larval dispersal using numerical models focuses on commercial fisheries (e.g. Pedersen et al 2006, Savina et al 2010 or pelagic larvae in general (e.g. Mitarai et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…It is evident even in recent publications that the major challenge faced by larval dispersal modellers across a wide range of taxa continues to be the paucity of knowledge of the biological properties of larvae that affects their dispersal (e.g. Savina et al 2010, Tilburg et al 2010. Broadcasting species of coral are well known for their multi-specific synchronous spawning events, and accurate data on times of gamete release have been incorporated into some model simulations (e.g.…”

Section: Introductionmentioning

confidence: 99%

Simulating the transport of broadcast coral larvae among the Southern Islands of Singapore

Tay¹,

Todd

Rosshaug

et al. 2012

Aquat. Biol.

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Singapore's coral reefs have experienced significant anthropogenic impacts for at least 4 decades. Ongoing reef restoration efforts, however, may not be sustainable if there is no natural coral recruitment. Knowledge of coral reef connectivity, which can be identified using hydrodynamic-advection and individual-based models, can help inform reef management decisions. Here, a 2-dimensional, hydrodynamic, flexible mesh model (MIKE 21 FM) coupled with a Lagrangian particle-tracking module was used to simulate larval transport among Singapore's Southern Islands. In each simulation, neutrally buoyant, passive particles representing coral planulae were released into the hydrodynamic conditions present during the coral multi-species synchronous spawning event of April 2007. When the number of larvae released was proportional to live coral cover (between 2400 and 46 200 particles), 3 islands: Pulau Sudong, Pulau Pawai and Pulau Senang, which all lie within a military Live Firing Area, were identified as the most robust sources of larvae seeding the rest of the Southern Islands. However, when equal numbers of larvae (18 000 larvae per site) were released from all sites in an effort to identify nursery areas with the greatest potential to seed other reefs, 2 different and upstream islands, Sisters' Islands and Kusu Island, were found to be better sources of larvae. We suggest all 5 of these sites should be identified for conservation. Additional effort to enhance coral cover, and hence larval export, at Sisters' Islands and Kusu Island may help increase recruitment on downstream reefs.

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“…For the North Sea area this has resulted in a number of detailed studies on egg and larval drift and transport of fish larvae, especially flatfishes ( Van der Veer et al, 1998;de Graaf et al, 2004;Bolle et al, 2009;Dickey-Collas et al, 2009;Savina et al, 2010;Hufnagl et al, 2013;Lacroix et al, 2013) and all these studies stress the importance of drift and transport during the pelagic phase.…”

Section: C H Tiessen Et Al: Numerical Modelling Of Physical Promentioning

confidence: 99%

Numerical modelling of physical processes governing larval transport in the southern North Sea

et al. 2014

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Abstract.A three-dimensional hydrodynamic model (GETM) was coupled with a particle tracking routine (GITM) to study the inter-annual variability in transport paths of particles in the North Sea and English Channel. For validation, a comparison with observed drifter trajectories is also presented here. This research investigated to what extent variability in the hydrodynamic conditions alone (reflecting passive particle transport) contributed to interannual variability in the transport of eggs and larvae. In this idealised study, no a priori selection of specific spawning grounds or periods was made and no active behaviour (vertical migration) or mortality was included. In this study, egg and larval development towards coastal nursery areas was based solely on sea water temperature, while settlement areas were defined by a threshold water depth. Results showed strong inter-annual variability in drift direction and distance, caused by a combination of wind speed and direction. Strong inter-annual variability was observed both in absolute amount of settlement in several coastal areas, and in the relative importance of the different areas. The effects of wind and temperature variability are minor for settlement along the western shores of the North Sea and in the English Channel, but have a very significant impact on settlement along the eastern shores of the North Sea. Years with strong south-westerly winds across the Dover Straight resulted in higher settlement figures along its eastern shores of the North Sea (standard deviation 37 % of the mean annual settlement value). Settlement in the western Dutch Wadden Sea did not only show inter-annual variability, but patterns were also variable within each year and revealed seasonal changes in the origin of particles: during winter, stronger currents along with colder temperatures generally result in particles originating from further away.

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Modelling the transport of common sole larvae in the southern North Sea: Influence of hydrodynamics and larval vertical movements

Cited by 45 publications

References 28 publications

Depth distribution of larvae critically affects their dispersal and the efficiency of marine protected areas

Depth distribution of larvae critically affects their dispersal and the efficiency of marine protected areas

Simulating the transport of broadcast coral larvae among the Southern Islands of Singapore

Numerical modelling of physical processes governing larval transport in the southern North Sea

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