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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 | ||||||||||||
| log in | [Experiment 1: the effect of relatedness and density on survival and growth.] - The effect of relatedness and density on survival and growth of Bugula neritina in the Gulf of Mexico, Florida from October to December 2021. (Consequences of kin structure in benthic marine systems) | In the Gulf of Mexico, Florida, we performed a series of field experiments using an experimentally tractable species (the bryozoan Bugula neritina) to test the hypothesis that the density, spatial arrangement, and genetic relatedness of neighbours differentially affect survival, growth, reproduction, paternity, and sperm dispersal. We manipulated the density and relatedness of neighbours and found that increased density reduced survival but not growth rate, and that there was no effect of relatedness on survival, growth, or fecundity, in contrast to previous studies. We also manipulated the distances to the nearest neighbour and used genetic markers to assign paternity within known mother–offspring groups to estimate how proximity affects mating success. Distance to the nearest neighbour did not affect the number of settlers produced, the paternity share, or the degree of multiple paternity. Overall, larger than expected sperm dispersal led to high multiple paternity, regardless of the distance to the nearest neighbour.\n\ncdm_data_type = Other\nVARIABLES:\nlatitude (degrees_north)\nlongitude (degrees_east)\nUnique_ID (unitless)\nMother_colony (unitless)\nDensity (unitless)\nRelatedness (unitless)\nGrid_position (unitless)\nX (unitless)\nY (unitless)\nInside_outside (unitless)\nDate (unitless)\nAge_days (unitless)\nBifurcations (unitless)\nZooids (unitless)\nSurvival (unitless)\n | BCO-DMO | bcodmo_dataset_968839_v1 | ||||||||||||
| log in | [Experiment 2: the effect of relatedness on survival, growth, and reproduction] - The effect of relatedness on survival, growth, and reproduction of Bugula neritina in the Gulf of Mexico, Florida from March to June 2022. (Consequences of kin structure in benthic marine systems) | In the Gulf of Mexico, Florida, we performed a series of field experiments using an experimentally tractable species (the bryozoan Bugula neritina) to test the hypothesis that the density, spatial arrangement, and genetic relatedness of neighbours differentially affect survival, growth, reproduction, paternity, and sperm dispersal. We manipulated the density and relatedness of neighbours and found that increased density reduced survival but not growth rate, and that there was no effect of relatedness on survival, growth, or fecundity, in contrast to previous studies. We also manipulated the distances to the nearest neighbour and used genetic markers to assign paternity within known mother–offspring groups to estimate how proximity affects mating success. Distance to the nearest neighbour did not affect the number of settlers produced, the paternity share, or the degree of multiple paternity. Overall, larger than expected sperm dispersal led to high multiple paternity, regardless of the distance to the nearest neighbour.\n\ncdm_data_type = Other\nVARIABLES:\nlatitude (degrees_north)\nlongitude (degrees_east)\nUnique_ID (unitless)\nMother_colony (unitless)\nRelatedness (unitless)\nGrid_position (unitless)\nX (unitless)\nY (unitless)\nPosition (unitless)\nDate (unitless)\nAge_days (unitless)\nBifurcations (unitless)\nZooids (unitless)\nSurvival (unitless)\nFertilized_ovicells (unitless)\nOvicells_total (unitless)\n | BCO-DMO | bcodmo_dataset_968545_v1 | ||||||||||||
| log in | [Experiment 3: the effect of distance to the nearest neighbour on reproductive output and paternity] - The effect of distance to the nearest neighbour on reproductive output and paternity of Bugula neritina in the Gulf of Mexico, Florida from April to June 2021. (Consequences of kin structure in benthic marine systems) | In the Gulf of Mexico, Florida, we performed a series of field experiments using an experimentally tractable species (the bryozoan Bugula neritina) to test the hypothesis that the density, spatial arrangement, and genetic relatedness of neighbours differentially affect survival, growth, reproduction, paternity, and sperm dispersal. We manipulated the density and relatedness of neighbours and found that increased density reduced survival but not growth rate, and that there was no effect of relatedness on survival, growth, or fecundity, in contrast to previous studies. We also manipulated the distances to the nearest neighbour and used genetic markers to assign paternity within known mother–offspring groups to estimate how proximity affects mating success. Distance to the nearest neighbour did not affect the number of settlers produced, the paternity share, or the degree of multiple paternity. Overall, larger than expected sperm dispersal led to high multiple paternity, regardless of the distance to the nearest neighbour.\n\ncdm_data_type = Other\nVARIABLES:\nlatitude (degrees_north)\nlongitude (degrees_east)\nColony (units)\nBlock (units)\nTreatment (units)\nPosition (units)\nDirection (units)\nX (units)\nY (units)\nTime_days (units)\nBifurcations (units)\nZooids (units)\nrgr40 (units)\nOffspring (units)\nSamples (units)\nSurvival (units)\n | BCO-DMO | bcodmo_dataset_969070_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 |