Data from: Modeling of the larval response of green sea urchins to thermal stratification using a random walk approach

Daigle RM, Metaxas A

Date Published: November 19, 2013

DOI: http://dx.doi.org/10.5061/dryad.82gg4

 

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Title autocorrelation
Downloaded 60 times
Description To quantify larval swimming, still images were extracted every 2.5 s for the entire 60-min video recording, and larval positions (x, z co-ordinates) were measured using ImageJ. To obtain w and s for each replicate, all individuals in focus from 20 pairs of frames (frames in a pair were 2.5 s apart) were used, each pair being separated by 3-min intervals.To analyze the temporal covariance of vertical swimming velocities, the position of 20 randomly selected larvae (1 every 3 min) was recorded over time (t) for as long as possible (i.e. until it crossed paths with another larva, or moved out of frame or out of focus). The covariance of each larva's vertical swimming velocity was calculated for time lags from 0 to 60 s. Data set includes larval rearing temperature (°C), experimental temperature (°C), replicate number, larvae number, x (horizontal) and z (vertical) positions within the frame (mm), time since introduction of larvae (min:s:ms or decimal s), and vertical swimming velocities (mm s-1)
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Title velocity
Downloaded 39 times
Description To quantify larval swimming, still images were extracted every 2.5 s for the entire 60-min video recording, and larval positions (x, z co-ordinates) were measured using ImageJ. To obtain w and s for each replicate, all individuals in focus from 20 pairs of frames (frames in a pair were 2.5 s apart) were used, each pair being separated by 3-min intervals. Data set includes larval rearing temperature (°C), experimental temperature (°C), replicate number, time since introduction of larvae (min:s:ms or decimal s), larvae number, x (horizontal) and z (vertical) positions within the frame (mm), and vertical swimming velocities (mm s-1)
Download velocity.xlsx (682.3 Kb)
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When using this data, please cite the original publication:

Daigle RM, Metaxas A (2012) Modeling of the larval response of green sea urchins to thermal stratification using a random walk approach. Journal of Experimental Marine Biology and Ecology 438: 14-23. http://dx.doi.org/10.1016/j.jembe.2012.09.004

Additionally, please cite the Dryad data package:

Daigle RM, Metaxas A (2012) Data from: Modeling of the larval response of green sea urchins to thermal stratification using a random walk approach. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.82gg4
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