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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 | [Sitka Sound Kelp Wet Weights] - (CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem) | While the recently decimated predatory sea star, Pycnopodia helianthoides, may support kelp forests by consuming herbivorous sea urchins, less is known about their non-consumptive effects. We conducted a field experiment in three replicate sea urchin barrens in Sitka Sound, AK in February of 2023, where we deployed pre-weighed Macrocystis pyrifera blades at discrete distances on four metre radial cables from caged adult P. helianthoides and control cages and reweighed after 24 hours. Our results suggest the chemical cue of P. helianthoides elicits a localised, species-specific landscape of fear of approximately 15m2 that suppresses grazing, and that the non-consumptive effects of P. helianthoides on sea urchin behaviour may be important for kelp restoration.\n\ncdm_data_type = Other\nVARIABLES:\nRayID (unitless)\nSite (unitless)\nlatitude (degrees_north)\nlongitude (Long, degrees_east)\nTreatment (unitless)\nRepID (unitless)\nReplicate (unitless)\nTreatRep (unitless)\nDate (unitless)\nTimeElapsed_hr (hours)\nRay (unitless)\nTrack (unitless)\nColor (unitless)\nDist_m (meters (m))\nKelpStartWt_g (grams (g))\nAttachedKelpEndWt_g (grams (g))\nDriftKelpEndWt_g (grams (g))\nTotal_KelpEndWt_g (grams (g))\nKelpChgWt_g (grams (g))\nKelpGrazed_g (grams (g))\nPercentKelpGrazed (unitless)\nFlags (unitless)\n | BCO-DMO | bcodmo_dataset_942729_v1 | ||||||||||||
| log in | [Urchin and Abalone Density Responses] - Urchin and abalone density responses to caged Pycnopodia field experiment in Sitka Sound urchin barrens, February 2023 from from February 2023 (High latitude kelp dynamics project) (CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem) | We conducted a field experiment in three replicate sea urchin barrens in Sitka Sound, AK (57°2'1\"N 135°15'51\"W) in February of 2023, where we deployed kelp blades at discrete distances on four meter radial cables from caged adult P. helianthoides and control cages for 24 hours. Via SCUBA we performed quadrat density surveys of three important kelp forest grazers (Haliotis kamtschatkana, Strongylocentrotus droebachiensis, and Mesocentrotus franciscanus) at discrete distances from the cage before, 15-30 min after, and 24 hours after P. helianthoides were added to the treatment cages.\n\ncdm_data_type = Other\nVARIABLES:\nQuadID (unitless)\nRayID (unitless)\nSite (unitless)\nlatitude (degrees_north)\nlongitude (Long, degrees_east)\nTreatment (unitless)\nReplicate (unitless)\nTreatRep (unitless)\nRay (unitless)\nDate (unitless)\nDiver (unitless)\nSurvey (unitless)\nTimePoint (units needed)\nHoursElapsed (hours)\ndepth_f (Depth_ft, feet (ft))\ndepth (Depth_m, m)\nQuad (unitless)\nDist_m (meters (m))\nSpecies (unitless)\nCount (individual)\nDensity_m2 (meters squared (m2))\nNotes (unitless)\n | BCO-DMO | bcodmo_dataset_942725_v1 |