Dataset: DISC: Deployment, environmental, and larval behavior information

Name: Deployment, environmental, and larval behavior information from drifting in situ chamber (DISC) deployments in Southwater Caye, Belize between June and August of 2016
Published: 2018-07-27
Keywords: oceans

Cite This Dataset

Spatial Extent: N:16.83897 E:-88.06593 S:16.78007 W:-88.0817

Temporal Extent: 2016-06-03 - 2016-08-16

Project:

Collaborative Research: The Role of Larval Orientation Behavior in Determining Population Connectivity (Elacatinus Dispersal II)

Principal Investigator:

Claire B. Paris-Limouzy (University of Miami Rosenstiel School of Marine and Atmospheric Science, UM-RSMAS)

Contact:

Claire B. Paris-Limouzy (University of Miami Rosenstiel School of Marine and Atmospheric Science, UM-RSMAS)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2018-07-27

Restricted:

Yes

Validated:

Current State:

Preliminary and in progress

Deployment, environmental, and larval behavior information from drifting in situ chamber (DISC) deployments in Southwater Caye, Belize between June and August of 2016

Abstract:

These data include deployment, environmental, and larval behavior information from a drifting in situ chamber (DISC). The DISC instrument was developed by Claire Paris at the Rosenstiel School of Marine and Atmospheric Sciences (RSMAS) of the University of Miami to observe the movement behavior and orientation of pelagic larvae at sea. The DISC version used for this project was equipped with a 8-inch diameter behavioral chamber, a video camera looking up into the chamber, 3 analog and one digital compass, and environmental sensors for temperature, light, and magnetic field, a drogue, and a surface float with a GPS. A single larva was deployed at a time in the chamber. Two DISC instruments were released at sea at the same time, similar to ocean drifters. They were visually tracked for a set period of time (20-30 minutes) from a small boat and retrieved for the next set of larval deployment. The DISC was deployed in Southwater Caye, Belize (16°43′08″N 88°08′56″W).

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Description

Related Datasets (data collection during same DISC deployments):
* DISC: Data package https://www.bco-dmo.org/dataset/739221
* DISC: Temperature and Light https://www.bco-dmo.org/dataset/739220
* DISC: Depth, Temperature, and Salinity https://www.bco-dmo.org/dataset/739541

Methods & Sampling

The DISC is a free-floating, cylindrical behavioral observation chamber composed of clear acrylic and is used to monitor the behavior of marine larvae in situ. During each trial, an individual fish larva is placed inside of the central arena (20 cm diameter, 10 cm height) which is transparent to odor, light, and sound. The bottom of the arena is made of clear plexiglass, while the top is made of a fine mesh, and the walls are made of a black opaque film. Larvae can swim freely inside of the arena, and their behavior is recorded using a camera system which is supplemented by information on the rotation of the DISC and by records of the environment (temperature, light intensity, salinity, GPS).

For more information about DISC methodology see dataset "DISC: data package" https://www.bco-dmo.org/dataset/739221.

Data Processing Description

BCO-DMO Data Manager Processing Notes:
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* Added ISO timestamp (UTC) for start and stop
* Values rounded to three decimal places except for lat/lons (5 decimal places) and p_value (2).

Data Files

File
Belize_Data.csv (Comma Separated Values (.csv), 83.13 KB) MD5:145632b3abd294130489b0490a0d48bd Primary data file for dataset ID 739595

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1459156

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
DISC_Deployments_Belize		2016-06-03	Belize_reefs	Claire B. Paris-Limouzy (Principal Investigator)	data info

Instruments

None available yet

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
bin_id	The ID of the rearing bin the larva was pulled from for the deployment	unitless	brief_desc
batch_id	When a batch of larva was split into multiple bins, multiple bins would have the same batch ID	unitless	brief_desc
sky	The condition of the sky during the deployment; A factor identified either clear; mixed; light clouds; cloudy; or rain	unitless	brief_desc
sea	An indication of the roughness of the sea; A factor identified as 1; 2; 3; 4; or 4+	unitless	brief_desc
rotationRange	The amount of rotation the DISC underwent during the deployment	degrees	brief_desc
art	A logical TRUE or FALSE indicating whether or not the concentration of individual points was higher BEFORE accounting for rotation of the DISC	Boolean (True\|False)	brief_desc
n	The number of points used to produce circular statistics	unitless	count
turn_n	The number of points used to calculate turning statistics, which will be equal to or smaller than n because it requires three consecutive points being tracked (unitless integer)	unitless	count
turn_freq_gt45	The number of turns made during the deployment which were greater than 45 degrees	unitless	count
speed_n	The number of points used to calculate speed statistics, which will be equal to or smaller than n because it requires two consecutive points being tracked	unitless	count
current_strength	The current speed during the deployment; calculated using the drift distance and the length of time of the deployment	centimeters per second (cm/s)	curr_speed_abs
date_start	The date on which the deployment began; format mm/dd/yyyy	unitless	date
date_stop	The date on which the deployment ended, though no deployments went through midnight in this dataset; format mm/dd/yyyy	unitless	date
fish_age	The age of the larva used for the deployment (Days-post-hatch)	elapsed days	days
deploy_id	The deployment ID; each experiment has a unique number	unitless	deployno
depth	The depth of the DISC's chamber during the deployment	meters below surface (m)	depth
current_bearing	The bearing of the individual larva relative to the direction of the current; calculated from the drift direction and the individual bearing (mean variable)	degrees	heading
wind_bearing	The bearing of the individual larva relative to the direction of the wind; calculated from the wind direction and the individual bearing (mean variable)	degrees	heading
zenith	The zenith angle of the sun - calculated from the date; time; and position of the deployment	degrees	heading
disc_id	An indentifier for which DISC this deployment was conducted in (Either DISC A or DISC B)	unitless	instrument
ISO_DateTime_UTC_start	Timestamp (UTC) in standard ISO 8601:2004(E) format YYYY-mm-ddTHH:MM	unitless	ISO_DateTime_UTC
ISO_DateTime_UTC_stop	Timestamp (UTC) in standard ISO 8601:2004(E) format YYYY-mm-ddTHH:MM	unitless	ISO_DateTime_UTC
lat	The 'mean' latitude of the deployment in between the starting latitude and ending latitude	decimal degrees	lat
lat_start	The starting latitude for the deployment	decimal degrees	lat
lat_stop	The ending latitude for the deployment	decimal degrees	lat
leg	The leg ID; each boat trip to collect data was given a unique number	unitless	leg
drift_distance	This distance the DISC travelled during the deployment, based on the GPS waypoints at beginning and end	meters (m)	length
lon	The 'mean' longitude of the deployment in between the starting longitude and ending longitude	decimal degrees	lon
lon_start	The starting longitude for the deployment	decimal degrees	lon
lon_stop	The ending longitude for the deployment	decimal degrees	lon
mean	The mean circular position of a larva, based on the manual track of its location in DISC images (An angle in degrees; cardinal reference)	degrees	no_bcodmo_term
se_mean	The standard error of the circular mean above	degrees	no_bcodmo_term
meanLight	The average light value recorded during the deployment	lumens per square meter (lux)	no_bcodmo_term
kappa	A measure of circular concentration, such that if kappa is 0 the distribution is uniform and if kappa is large the distribution becomes more concentrated around the mean (A unitless number greater than 0)	unitless	no_bcodmo_term
maxLight	The maximum value of light recording during the deployment	lumens per square meter (lux)	no_bcodmo_term
variance	The variance of the circular distribution; equal to 1/k (A unitless number greater than 0)	unitless	no_bcodmo_term
minLight	The minimum value of light recorded during the deployment	lumens per square meter (lux)	no_bcodmo_term
r	The rho-value of the circular distribution; essentially a bounded equivalent of kappa; such that 0 is a uniform distribution and 1 is a distribution of points all equal to the mean (A unitless number greater than 0)	unitless	no_bcodmo_term
p_value	The p-value of a Rayleigh's test of uniformity	dimensionless	no_bcodmo_term
signif	A logical TRUE or FALSE indicating if the p-value is significant at an alpha of 0.05	Boolean (True\|False)	no_bcodmo_term
turn_abs_mean	The average turning angle throughout the deployment; absolute value is used so direciton of the turn is not represented	degrees	no_bcodmo_term
drift_direction	The direction the DISC drifted in during the deployment, based on the GPS waypoints taken at start and stop of the deployment (An angle in degrees; cardinal reference)	degrees	no_bcodmo_term
In_Behavior	An indication of the health of the larvae at the start of deployment based on diver-assessed behavior (A unitless factor; from 0-5)	unitless	sample_descrip
Out_Behavior	An indication of the health of the larvae at the end of deployment based on diver-assessed behavior (A unitless factor; from 0-5)	unitless	sample_descrip
tran_lat	The latitude at the center of the transect where larvae were collected from sponges	decimal degrees	site_descrip
tran_lon	The longitude at the center of the transect where larvae were collected from sponges	decimal degrees	site_descrip
tran_ang	The angle from the center of the individual deployment to the transect center	degrees	site_descrip
tran_bearing	The bearing of the individual larva relative to the angle towards the transect center; calculated from the tran_ang and the individual bearing (mean variable)	degrees	site_descrip
lab_lat	The latitude of the lab where larvae were reared on Southwater Cay	decimal degrees	site_descrip
lab_lon	the longitude of the lab where larvae were reared on Southwater Cay	decimal degrees	site_descrip
lab_ang	The angle from the center of the individual deployment to the rearing lab	degrees	site_descrip
lab_bearing	The bearing of the individual larva relative to the angle towards the lab; calculated from the lab_ang and the individual bearing (mean variable)	degrees	site_descrip
moonAlt	The altitude angle of the moon - calculated from deployment date; time; and position	degrees	site_descrip
moonAz	The azimuth angle of the mooth - calculated from the deployment date; time; and position	degrees	site_descrip
tide	The tidal cycle (A factor either ebb or flood)	unitless	site_descrip
moonHor	A logical TRUE or FALSE indicating if the moon was over the horizon or not	Boolean (True\|False)	site_descrip
location	Distance from the reef (A factor either near or far)	unitless	site_descrip
moon_bearing	The bearing of the individual relative to the azimuth angle of the moon; calculated from the moon azimuth and the individual bearing (mean variable)	degrees	site_descrip
start_wp	The identifier of the GPS waypoint taken at the start of the deployment from a handhelp GPS	unitless	site_descrip
end_wp	The identifier of the GPS waypoint taken at the end of the deployment from a handhelp GPS	unitless	site_descrip
azimuth	The azimuth angle of the sun - calculated from the date; time; and position of the deployment	degrees	site_descrip
azmean	The bearing of the individual larva relative to the azimuth angle of the sun; calculated from the azimuth angle and the individual bearing (mean variable)	degrees	site_descrip
speed_sd	The standard deviation of instantaneous speeds throughout the deployment	centimeters per second (cm/s)	speed_mag
speed_median	The median value of instanteous speeds throughout the deployment	centimeters per second (cm/s)	speed_mag
speed_mean	The average of instantaneous swimming speeds made throughout the deployment	centimeters per second (cm/s)	speed_mag
meanTemp	The average temperature of the water throughout the deployment	degrees Celsius	temp
maxTemp	The maximum temperature recorded during the deployment	degrees Celsius	temp
minTemp	The minimum temperature recorded during the deployment	degrees Celsius	temp
time_start	The time at which the deployment began; i.e. the beginning of acclimation time; format HH:MM	unitless	time
time_stop	The Time at which the deployment ended; ie 20 minutes after the start time; format HH:MM	unitless	time
wind_dir	The direction (angle) the wind was blowing from during the deployment	degrees	wind_dir
wind_speed	The speed of the wind during the deployment	unknown	wind_speed

Database

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Dataset: DISC: Deployment, environmental, and larval behavior information