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Larval dispersal and marine population connectivity.
Evidence from direct and indirect approaches using geochemical and genetic techniques suggests that populations range from fully open to fully closed and a full understanding of population connectivity has important applications for management and conservation.
Scaling of Connectivity in Marine Populations
Using a high-resolution biophysical model for the Caribbean region, it is reported that typical larval dispersal distances are on the scale of only 10 to 100 kilometers for a variety of reef fish species and shows the importance of the early onset of active larval movement mediating the dispersal potential.
Connectivity of marine populations: open or closed?
- R. Cowen, K. Lwiza, S. Sponaugle, Claire B Paris-Limouzy, D. Olson
- Environmental ScienceScience
- 4 February 2000
Eulerian and Lagrangian flow models were used and the alternative process of larval retention near local populations is shown to exist and may be of great importance in the maintenance of marine population structure and management of coastal marine resources.
Critical science gaps impede use of no-take fishery reserves.
Predicting self-recruitment in marine populations: biophysical correlates and mechanisms
It is concluded that physical factors that result in a departure from unidirectional, depth-uniform water flow provide the opportunity for retention of larvae, and therefore of self-recruitment.
Direct evidence of a biophysical retention mechanism for coral reef fish larvae
Empirical evidence is provided for larval retention of coral reef fishes and the role of active behavior in larval transport is stressed, implying that pelagic processes can explain recruitment rates.
Large scale pattern of recruitment by the labrid, semicossyphus pulcher: causes and implications
- R. Cowen
- 1 August 1985
Larval durations and recruitment patterns of two Caribbean gobies (Gobiidae): contrasting early life histories in demersal spawners
It is demonstrated that two confamilial demersal spawners may have larvae with contrasting life history traits which can influence patterns of juvenile recruitment, and that settlement during a particular lunar phase may be advantageous for new recruits and the capacity to delay metamorphosis may enable tighter synchronization to the lunar cycle.
Surfing, spinning, or diving from reef to reef: effects on population connectivity
The impact of larval behavior extends beyond enhancing the process of self-recruitment by changing population connectivity patterns, and larval survival emerged as a key component for connectivity estimates, the study of which poses a great challenge in tropical ecosystems.