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- Procaccini, Gabriele, et al.
(author)
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Seagrass ecophysiology meets ecological genomics : are we ready?
- 2012
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In: Marine Ecolocy. - : Wiley. - 0173-9565 .- 1439-0485. ; 33:4, s. 522-527
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Journal article (peer-reviewed)abstract
- In March 2011, the Ecophysiology and Genetics Working Groups of the European Science Foundation COST Action ES 0906, entitled Seagrass Productivity: From Genes to Ecosystem Management, organized an exploratory workshop entitled Linking Ecophysiology and Ecogenomics in Seagrass Systems. The goal of the workshop was to discuss how to integrate comparative gene expression studies with physiological processes such as photosynthetic performance, carbon and nitrogen utilization and environmental adaptation. The main questions discussed for integrative research related to mechanisms of carbon utilization, light requirements, temperature effects and natural variation in pH and ocean acidification. It was concluded that the seagrass research community is still in the nascent stages of linking ecophysiology with genomic responses, as carbon and nitrogen metabolism of seagrasses have not been sufficiently well studied. Likewise, genomic approaches have only been able to assign meaningful interpretations to a handful of differentially expressed genes. Nevertheless, the way forward has been established.
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| 2. |
- Sundelöf, Andreas, 1974
(author)
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Larval dispersal and vertical migration behaviour - a simulation study for short dispersal times
- 2012
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In: Marine Ecology. - : Wiley. - 0173-9565 .- 1439-0485. ; 33, s. 183-193
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Journal article (peer-reviewed)abstract
- Current speed often varies with depth, so vertical movements of larvae are expected to have profound effects on dispersal velocity and therefore dispersal potential. Systematic behaviours are expected to have strong effects on dispersal. However, reliable information on the presence of vertical migrations in larvae is scarce, but the few well investigated empirical examples justify a detailed simulation study and an analysis of potential effects. We present a spatially explicit 3D hydrodynamic model that incorporates biological information in the form of active particles advected in a Lagrangian fashion. The set-up is designed to analyze the sensitivity of dispersal distances to variation in vertical behaviour of larvae. We simulated short (4days) pelagic larval durations (PLDs) to determine whether behaviour might be important over short dispersal periods. We found that sinusoidal behaviours (slow vertical migration) in or out of phase with tides did not significantly change the dispersal patterns compared to those of larvae that remained at the surface. By contrast, a quadratic pattern of behaviour resulting in rapid vertical migration, in or out of phase with tides, had dramatic effects on both distance and direction of dispersal. The resulting dispersal kernels were found to be multimodal due to the interaction between tidal and meteorological components in flow. Incorporating biological information on larval migrations in Lagrangian simulation of dispersal will be important in estimates of connectivity and forecasting marine reserve networks. © 2011 Blackwell Verlag GmbH.
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