bcodmo_dataset_942729_v1 eng UTF8 dataset service Adam Shepherd BCO-DMO 508-289-2772 266 Woods Hole Rd. MS#36 Woods Hole MA 02543 USA erddap@bco-dmo.org pointOfContact 2026-05-15 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 2 column row [Kelp Wet Weights Pycnopodia Cages] - (CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem) 2026-05-15 creation erddap.bco-dmo.org bcodmo_dataset_942729_v1 BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/942729 information web browser Background Information Background information from the source information originator 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, Alaska 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 that suppresses grazing, and that the non-consumptive effects of P. helianthoides on sea urchin behaviour may be important for kelp restoration. BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/942729 information web browser Background Information Background information from the source information pointOfContact earth science atmosphere ocean biosphere biology environment theme BCO-DMO project latitude longitude theme CF The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. BCO-DMO largerWorkCitation project eng geoscientificInformation 1 -135.28 -135.255 57.033 57.036 [Kelp Wet Weights Pycnopodia Cages] - (CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem) 2026-05-15 creation BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/942729 information web browser Background Information Background information from the source information originator 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, Alaska 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 that suppresses grazing, and that the non-consumptive effects of P. helianthoides on sea urchin behaviour may be important for kelp restoration. ERDDAP tabledap 1 -135.28 -135.255 57.033 57.036 tight ERDDAPtabledapDatasetQueryAndAccess https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_942729_v1 ERDDAP:tabledap ERDDAP-tabledap ERDDAP's tabledap service (a flavor of OPeNDAP) for tabular (sequence) data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes. download [Kelp Wet Weights Pycnopodia Cages] - (CAREER: Energy fluxes and community stability in a dynamic, high-latitude kelp ecosystem) 2026-05-15 creation BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/942729 information web browser Background Information Background information from the source information originator 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, Alaska 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 that suppresses grazing, and that the non-consumptive effects of P. helianthoides on sea urchin behaviour may be important for kelp restoration. OPeNDAP 1 -135.28 -135.255 57.033 57.036 tight OPeNDAPDatasetQueryAndAccess https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_942729_v1 OPeNDAP:OPeNDAP OPeNDAP An OPeNDAP service for tabular (sequence) data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes. download physicalMeasurement RayID String Rayid Site String Site Treatment String Treatment RepID String Repid TreatRep String Treatrep Date String Date TimeElapsed_hr int Timeelapsed_hr Ray int Ray Track String Track Color String Color Dist_m float Dist_m KelpStartWt_g float Kelpstartwt_g AttachedKelpEndWt_g float Attachedkelpendwt_g DriftKelpEndWt_g String Driftkelpendwt_g Total_KelpEndWt_g float Total_kelpendwt_g KelpChgWt_g float Kelpchgwt_g KelpGrazed_g float Kelpgrazed_g PercentKelpGrazed float Percentkelpgrazed Flags int Flags Adam Shepherd BCO-DMO 508-289-2772 266 Woods Hole Rd. MS#36 Woods Hole MA 02543 USA erddap@bco-dmo.org distributor OPeNDAP DAP/2.0 https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_942729_v1.html order Data Subset Form ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. download https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_942729_v1.graph order Make-A-Graph Form ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data. mapDigital This record was created from dataset metadata by ERDDAP Version 2.22