caa a22 4500 445819553 CHVBK 20180317145239.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00338-011-0749-z doi (NATIONALLICENCE)springer-10.1007/s00338-011-0749-z A simple approximation for larval retention around reefs [Elektronische Daten] [Paulina Cetina-Heredia, Sean Connolly] Estimating larval retention at individual reefs by local scale three-dimensional flows is a significant problem for understanding, and predicting, larval dispersal. Determining larval dispersal commonly involves the use of computationally demanding and expensively calibrated/validated hydrodynamic models that resolve reef wake eddies. This study models variation in larval retention times for a range of reef shapes and circulation regimes, using a reef-scale three-dimensional hydrodynamic model. It also explores how well larval retention time can be estimated based on the "Island Wake Parameter”, a measure of the degree of flow turbulence in the wake of reefs that is a simple function of flow speed, reef dimension, and vertical diffusion. The mean residence times found in the present study (0.48-5.64days) indicate substantial potential for self-recruitment of species whose larvae are passive, or weak swimmers, for the first several days after release. Results also reveal strong and significant relationships between the Island Wake Parameter and mean residence time, explaining 81-92% of the variability in retention among reefs across a range of unidirectional flow speeds and tidal regimes. These findings suggest that good estimates of larval retention may be obtained from relatively coarse-scale characteristics of the flow, and basic features of reef geomorphology. Such approximations may be a valuable tool for modeling connectivity and meta-population dynamics over large spatial scales, where explicitly characterizing fine-scale flows around reef requires a prohibitive amount of computation and extensive model calibration. Springer-Verlag, 2011 Residence time nationallicence Island wake parameter nationallicence Larval retention nationallicence Connectivity nationallicence Coral reef nationallicence Eddies nationallicence Cetina-Heredia Paulina School of Marine and Tropical Biology, James Cook University, 4811, Townsville, QLD, Australia aut Connolly Sean School of Marine and Tropical Biology, James Cook University, 4811, Townsville, QLD, Australia aut Coral Reefs Springer-Verlag 30/3(2011-09-01), 593-605 0722-4028 30:3<593 2011 30 338 https://doi.org/10.1007/s00338-011-0749-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00338-011-0749-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cetina-Heredia Paulina School of Marine and Tropical Biology, James Cook University, 4811, Townsville, QLD, Australia aut NATIONALLICENCE 700 1- Connolly Sean School of Marine and Tropical Biology, James Cook University, 4811, Townsville, QLD, Australia aut NATIONALLICENCE 773 0- Coral Reefs Springer-Verlag 30/3(2011-09-01), 593-605 0722-4028 30:3<593 2011 30 338 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer