Loading...
  • ecological
  • Integrated, multidisciplinary studies of the physical, chemical, geological, an ecological dynamics of seamounts will continue to reveal the value of seamounts as natural laboratories in which to gain insights into the factors that elucidate the role these systems play in the dispersal, evolution, and biodiversity of deep-sea fauna. (tos.org)
  • genetic
  • However, mounting genetic evidence shows that pelagic stages often fail to fully achieve their dispersal potential ( 8 - 11 ), suggesting that the relationship between dispersal potential and realized gene flow among marine populations is more complex than previously assumed. (pnas.org)
  • However, genetic studies show differentiation only at large scales, suggesting dispersal over more than 100 km. (publish.csiro.au)
  • 0.05) among sites, and hierarchical F ST analysis indicated 64% of genetic variation was at the smallest scale, supporting field studies that concluded larval dispersal is less than 100 m. (publish.csiro.au)
  • The zone of high SST variability is characterized by periodic shedding of eddies from the East Australian Current, and we suggest that ocean current circulation may, through its influence on larval transport and recruitment, interact with the genetic consequences of large variance in individual reproductive success to generate patterns of fine-scale patchy genetic structure. (edu.au)
  • Currents
  • Currents, environmental shifts, and topography can prove to be dispersal barriers but are often semipermeable. (royalsocietypublishing.org)
  • In the sea, it is well recognized that movements of pelagic stages are influenced by oceanographic processes, such as upwelling systems, fronts, moving convergences, eddies, and counter currents that can lead to dispersal of hundreds of kilometres ( 3 , 4 ). (pnas.org)
  • gene flow
  • Dispersal (defined here as the movement of individuals from the natal to a reproductive site) is fundamental to the vast majority of living organisms and ultimately drives gene flow across space and time. (frontiersin.org)
  • Dispersal, or the exchange of individuals among natal and non-natal sites, is the primary process that 'connects' populations, with important impacts on local demography, landscape-wide population dynamics and gene flow. (springer.com)
  • Dispersal, gene flow, and population structure. (publish.csiro.au)
  • In addition, gene flow is primarily in congruence with the prevailing ocean current system, highlighting the role of larval dispersal in population structuring of notothenioids. (springer.com)
  • patterns
  • Although this and other approaches can provide insight into larval emigration and movement, spatially intensive sampling and knowledge of circulation patterns may allow for more rigorous estimates of larval movements. (oregonstate.edu)
  • traits
  • Whether adaptive or not, it is becoming apparent that inter-individual heterogeneity in morphology, behavior, condition, and life history traits may have critical effects on population-level heterogeneity in dispersal. (frontiersin.org)
  • populations
  • Coupled biophysical models predict that the probability of successful dispersal declines as a function of distance between populations. (royalsocietypublishing.org)
  • Then, we employ a logistic model to (i) compare the observed and expected dispersal distance distributions and (ii) determine the relationship between the probability of successful dispersal and the distance between populations. (royalsocietypublishing.org)
  • However, direct measures of the relationship between the probability of successful dispersal and distance between populations are lacking. (royalsocietypublishing.org)
  • The clown anemonefish ( Amphiprion percula ) offers a tractable system to test directly the hypothesis that the probability of successful dispersal declines as a function of distance between populations. (royalsocietypublishing.org)
  • outcomes
  • At the most basic level, the causes and outcomes of dispersal are driven by the interactions of individuals with their environment ( Bowler and Benton, 2005 ). (frontiersin.org)
  • barriers
  • The nature of such barriers varies according to the dispersal means and capabilities of the organisms concerned. (pnas.org)
  • structure
  • Contrary to previous expectations, recent studies have often detected unexpectedly low dispersal and fine-scale population structure in the sea, leading to a paradigm shift in how marine systems are viewed. (edu.au)
  • Thus
  • Thus, high resolution hydrodynamically-based dispersal models have been developed ( 2 , 15 ). (pnas.org)