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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 |