Marine connectivity patterns around the Australian continent

Condie, Scott A.; Waring, Jason; Mansbridge, J. V.; Cahill, Madeleine

doi:10.1016/j.envsoft.2004.07.005

Cited by 57 publications

(71 citation statements)

References 19 publications

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“…We used the Australian Connectivity Interface (Aus-ConnIe) (Condie et al 2005) (available from www.per.marine.csiro.au/ aus-connie) to estimate the dispersal distances possible for particles with a planktonic duration similar to Haliotis coccoradiata larvae. Aus-ConnIe provides an estimate of the probability that any 2 regions of the upper water column are connected over a specified dispersion period based on estimated ocean currents along the east coast of Australia, excluding local influences such as tides (Condie et al 2005). Therefore this estimate represents the maximum dispersal distance that is likely to be achieved by this species.…”

Section: Samplingmentioning

confidence: 99%

Genetic evidence for different scales of connectivity in a marine mollusc

Piggott¹,

Banks²,

Tung³

et al. 2008

Mar. Ecol. Prog. Ser.

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Recent studies of connectivity in marine populations have suggested that larval retention and local recruitment are more common than previously considered. Here we used genetic data to investigate the scale of connectivity and patterns of recruitment in the abalone Haliotis coccoradiata, a broadcast spawner with a short larval stage. Although we detected weak but significant genetic differentiation (F ST ) between populations over a scale of approximately 1000 km, the pattern did not fit an isolation-by-distance (IBD) model, suggesting relatively long dispersal distances. However, individual-based multilocus spatial autocorrelation identified fine-scale genetic structure within a range of 20 km, suggesting short distance dispersal and local recruitment. Simple computer simulations in which all dispersal was restricted to within this scale (mean 10 km) suggested that a significant IBD result would most likely be generated under such a dispersal scenario. The lack of a significant IBD suggests infrequent long-distance dispersal is also likely and this is further supported by oceanographic particle dispersal modelling, which shows that larvae could be transported over large distances by ocean currents. Our results suggest that recruitment occurs primarily over a small spatial scale in a species that also has the ability to disperse over considerably greater distances.KEY WORDS: Abalone · Dispersal · Genetic structure · Recruitment · Microsatellite DNA Resale or republication not permitted without written consent of the publisher

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Section: Samplingmentioning

confidence: 99%

Genetic evidence for different scales of connectivity in a marine mollusc

Piggott¹,

Banks²,

Tung³

et al. 2008

Mar. Ecol. Prog. Ser.

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show abstract

“…Whereas the Leeuwin Current may enhance poleward transport of marine populations (e.g. Condie et al 2005), the existence of the strong eddy field may disrupt alongshore connectivity (e.g. Griffin et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Retention and dispersal of shelf waters influenced by interactions of ocean boundary current and coastal geography

Feng

Slawinski

Beckley

et al. 2010

Mar. Freshwater Res.

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Retention and dispersal of shelf waters under the influence of ocean boundary currents is crucial to recruitment processes of many coastal species. In this study, a Lagrangian particle tracking method based on an eddy-resolving, data-assimilating, hydrodynamic model is used to study spatial variations of local retention rates and alongshore dispersal of surface waters on the continental shelf off the west coast of Australia. The circulation on the shelf off the west coast of Australia is dominated by the southward-flowing eastern boundary current, the Leeuwin Current, which is interrupted by episodic wind-driven, northward, inshore surface transport during the austral summer, and by mesoscale eddy formations during the austral winter. Low-retention shelf regions tend to experience high alongshore currents, owing to the near-shore influence of the Leeuwin Current, protruding coastal geography, or formation of mesoscale eddies, whereas high-retention regions are sheltered from the direct influence of the Leeuwin Current by coastal geographic features. Alongshore dispersal also exhibits spatial as well as seasonal heterogeneity, with predominantly southward dispersal during the austral winter, and more symmetrical dispersal during the austral summer. Shelf retention and seasonal dispersal are linked with recruitment processes of invertebrate and fish species off the west coast of Australia.

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“…These connectivity statistics are based on large numbers of particle trajectories (one million at any given time) estimated from satellite altimeter data, coastal tide-gauge data, and winds from meteorological models [Condie et al, 2005]. Users can save the results in a variety of formats (CSV, Excel, or XML) and, as an option, may save their sessions by first registering.…”

Section: Wwwaguorg/pubs/eosmentioning

confidence: 99%

Eos, Transactions, American Geophysical Union Volume 86, Number 26, 28 June 2005

2005

EoS Transactions

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Marine connectivity patterns around the Australian continent

Cited by 57 publications

References 19 publications

Genetic evidence for different scales of connectivity in a marine mollusc

Genetic evidence for different scales of connectivity in a marine mollusc

Retention and dispersal of shelf waters influenced by interactions of ocean boundary current and coastal geography

Eos, Transactions, American Geophysical Union Volume 86, Number 26, 28 June 2005

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