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BCO-DMO ERDDAP
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| griddap | Subset | tabledap | Make A Graph | wms | files | Accessible | Title | Summary | FGDC | ISO 19115 | Info | Background Info | RSS | Institution | Dataset ID | |
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| log in | [Antarctic krill schooling: Coordinates for speed and nearest neighbor distances] - 3D coordinates to calculate speed and nearest neighbor distances in each trial of Antarctic krill in lab experiments at Palmer Station, Antarctica in November 2022. (Collaborative Research: Individual Based Approaches to Understanding Krill Distributions and Aggregations) | Laboratory experiments were conducted on schools of Antarctic krill in the novel annular flume at Palmer Station, Antarctica, in November 2022. Using overhead camera along with stereophotogrammetry system the swimming trajectories of krill were recorded while altering flow and light levels in the tank. \n\nThe purpose of the study is to understand how Antarctic krill schooling structure changes under environmental cues such as flow and light, with the hope that distribution of these important species can be predicted through knowledge of the environment in the wild. Southern Ocean ecologists, biologists, and oceanographers in general could benefit from this work. Kuvvat Garayev and David Murphy from University of South Florida were responsible for the collection and interpretation of data.\n\ncdm_data_type = Other\nVARIABLES:\ntrial (exp_id)\nburst (unitless)\nconsecutive_time_point (unitless)\nkrill_count (unitless)\nx (pixel units)\ny (pixel units)\nz (pixel units)\n | BCO-DMO | bcodmo_dataset_923530_v1 | ||||||||||||
| https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_739790 | https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_739790.graph | https://erddap.bco-dmo.org/erddap/files/bcodmo_dataset_739790/ | public | [Snail larvae in turbulence and waves] - Processed data from Particle Imaging Velocimetry (PIV) observations of Tritia trivittata and Tritia obsoleta behavior in various flow tanks (Relative Influence of Turbulence and Waves on Larval Behavior) | Dispersing marine larvae can alter their physical transport by swimming vertically or sinking in response to environmental signals. However, it remains unknown whether any signals could enable larvae to navigate over large scales. We tested whether flow-induced larval behaviors vary with adults' physical environments using congeneric snail larvae from the wavy continental shelf (Tritia trivittata) and from turbulent inlets (Tritia obsoleta). This dataset includes observations of larvae in turbulence, in rotating flows dominated by vorticity or strain rates, and in rectilinear wave oscillations. Larval and water motion were observed using near-infrared particle image velocimetry (IR PIV), and analyses identified threshold signals causing larvae to change their direction or magnitude of propulsive force. The two species reacted similarly to turbulence but differently to waves, and their transport patterns would diverge in wavy, offshore regions. Wave-induced behaviors provide evidence that larvae may detect waves as both motions and sounds useful in navigation.\n\ncdm_data_type = Other\nVARIABLES:\nfile_name (unitless)\nlarval_stage (unitless)\nspecies (unitless)\nflow_tank (unitless)\ndirection (unitless)\nx (Longitude, centimeters (cm))\nz (centimeters (cm))\nuf (centimeters per second (cm/s))\nwf (centimeters per second (cm/s))\nub (centimeters per second (cm/s))\nwb (centimeters per second (cm/s))\nlarval_axial_rotation_ang (radians)\nlarval_propulsive_force (N)\npropulsion_direction (radians)\ndissipation_rate (m^2 s^-3)\nhorizontal_comp_of_vorticity (s^-1)\nacceleration (meters per second (m s^-2))\nstrain_rate (s^-1)\n | https://erddap.bco-dmo.org/erddap/info/bcodmo_dataset_739790/index.htmlTable | https://www.bco-dmo.org/dataset/739790
| https://erddap.bco-dmo.org/erddap/rss/bcodmo_dataset_739790.rss | https://erddap.bco-dmo.org/erddap/subscriptions/add.html?datasetID=bcodmo_dataset_739790&showErrors=false&email= | BCO-DMO | bcodmo_dataset_739790 |