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Evidence for a dome-shaped relationship between turbulence and larval fish ingestion rates
An analytical model is developed that shows the overall probability of feeding is a dome-shaped function of turbulent velocity and that the height and location of the maxima depend on turbulence level and the behavioral characteristics of predator and prey. Expand
Assessment of temperature effects on interrelationships between stage durations, mortality, and growth in laboratory-reared Homarus americanus Milne Edwards larvae
Temperature had little effect on stage-specific survival of larval stages I and II but survival of stages III and IV was significantly reduced among lobsters reared at 10°C ( 75%) and a quadratic growth response to temperature revealed that the largest growth rates were at 15 and 18 °C. Expand
Wind-based models for estimating the dissipation rates of turbulent energy in aquatic environments: empirical comparisons
This study quantified the effectiveness with which boundary (wall) layer theory represents turbulent dissipation rates measured within natural surface mixing layers and found no evidence that turbulence near the surface during high winds was higher than the boundary layer prediction. Expand
Baltic cod recruitment – the impact of climate variability on key processes
The present study aims at disentangling the interactions between reproductive effort and hydrographic forcing leading to variable recruitment in the eastern Baltic cod stock using updated environmental and life stage-specific abundance and production time-series. Expand
Encounter rates and swimming behavior of pause‐travel and cruise larval fish predators in calm and turbulent laboratory environments
In terms of prey encounter rate, cod larvae benefit more from turbulent motion than do herring larvae, however, aspects of larval behavior other than prey search strategy need to be examined experimentally before the overall effects of turbulence on larval fish feeding rates can be fully evaluated. Expand
Quantifying environmental heterogeneity : habitat size necessary for successful development of cod Gadus morhua eggs in the Baltic Sea
The results of 2 independent volume-estimation methods are comparable, indicating that highly significant differences exist among the sites, and that the westernmost spawning ground, Bornholm Basin, has on average the highest reproductive volume and the lowest variability among the 4 sites. Expand
Processes controlling the production of new fish (recruitment) are poorly understood and therefore challenge population ecologists and resource managers. Sprat in the Baltic Sea is no exception:Expand
Recruitment of Baltic cod and sprat stocks: identification of critical life stages and incorporation of environmental variability into stock-recruitment relationships*
Environmental factors showing statistically significant covariance with the survival of one of these critical life stages were incorporated into stock-recruitment models for individual spawning areas separately and for the Central Baltic combined. Expand
Larval fish feeding and turbulence: A case for the downside
Pursuit success decreased significantly with relative velocity and the observations approximated the predicted effect of turbulence on pursuit success, which may partly explain the contradictory observations of how turbulence affects larval fish feeding, growth, and survival in the sea. Expand
Quantifying the contribution of small-scale turbulence to the encounter rates between larval fish and their zooplankton prey: effects of wind and tide
It is concluded that turbulence, in addition to light and nutrients, may be an important component of the observed increase in plankton production rates and biomass at tidal fronts and at other upwelling systems. Expand