%0 Journal Article %1 gaines2003avoiding %A Gaines, Steven D. %A Gaylord, Brian %A Largier, John L. %D 2003 %J Ecological Applications %K biased_migration marine_organisms ocean_currents population_dynamics %N sp1 %P 32-46 %R 10.1890/1051-0761(2003)0130032:ACOIMR2.0.CO;2 %T Avoiding current oversights in marine reserve design %U https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1890/1051-0761%282003%29013%5B0032%3AACOIMR%5D2.0.CO%3B2 %V 13 %X The pun in the above title reflects two points. First, marine life cycles commonly include a dispersive juvenile stage that is moved about by ocean currents. This stage often is the predominant, or only, means of dispersal that connects spatially disjunct populations. As a consequence, details of dispersal likely play a critical role in determining the effectiveness of marine reserves as a management and conservation tool. Curiously, however (and this is the second point of the title), although dozens of models for marine reserves now exist, few actually account explicitly for larval dispersal. Moreover, those that do include dispersal, do so almost exclusively by considering it to be a nondirectional spreading process (diffusion), ignoring the effects of directional transport by currents (advection). Here we develop a population dynamical model for marine organisms with relatively sedentary adults whose larvae are transported in a simple flow field with both diffusive spreading and directional characteristics. We find that advection can play a dominant role in determining the effectiveness of different reserve configurations. Two of the most important consequences are: (1) with strong currents, multiple reserves can be markedly more effective than single reserves of equivalent total size; and (2) in the presence of strong currents, reserves can significantly outperform traditional, effort-based management strategies in terms of fisheries yield, and do so with less risk. These results suggest that successful reserve design may require considerable new efforts to examine explicitly the role of dispersal of young.

@article{gaines2003avoiding, abstract = {The pun in the above title reflects two points. First, marine life cycles commonly include a dispersive juvenile stage that is moved about by ocean currents. This stage often is the predominant, or only, means of dispersal that connects spatially disjunct populations. As a consequence, details of dispersal likely play a critical role in determining the effectiveness of marine reserves as a management and conservation tool. Curiously, however (and this is the second point of the title), although dozens of models for marine reserves now exist, few actually account explicitly for larval dispersal. Moreover, those that do include dispersal, do so almost exclusively by considering it to be a nondirectional spreading process (diffusion), ignoring the effects of directional transport by currents (advection). Here we develop a population dynamical model for marine organisms with relatively sedentary adults whose larvae are transported in a simple flow field with both diffusive spreading and directional characteristics. We find that advection can play a dominant role in determining the effectiveness of different reserve configurations. Two of the most important consequences are: (1) with strong currents, multiple reserves can be markedly more effective than single reserves of equivalent total size; and (2) in the presence of strong currents, reserves can significantly outperform traditional, effort-based management strategies in terms of fisheries yield, and do so with less risk. These results suggest that successful reserve design may require considerable new efforts to examine explicitly the role of dispersal of young.}, added-at = {2018-08-31T11:20:49.000+0200}, author = {Gaines, Steven D. and Gaylord, Brian and Largier, John L.}, biburl = {https://www.bibsonomy.org/bibtex/268d2cce8d4b7046907f2653f0d39a38b/peter.ralph}, doi = {10.1890/1051-0761(2003)013[0032:ACOIMR]2.0.CO;2}, eprint = {https://esajournals.onlinelibrary.wiley.com/doi/pdf/10.1890/1051-0761%282003%29013%5B0032%3AACOIMR%5D2.0.CO%3B2}, interhash = {2466e4159c60430614f53cb83a43f84a}, intrahash = {68d2cce8d4b7046907f2653f0d39a38b}, journal = {Ecological Applications}, keywords = {biased_migration marine_organisms ocean_currents population_dynamics}, number = {sp1}, pages = {32-46}, timestamp = {2018-08-31T11:20:49.000+0200}, title = {Avoiding current oversights in marine reserve design}, url = {https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1890/1051-0761%282003%29013%5B0032%3AACOIMR%5D2.0.CO%3B2}, volume = 13, year = 2003 }