bcodmo_dataset_990975_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 2026-05-21 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 2 column row [Belt Transect: Size] - Sea star size structure from surveys along the Oregon and Northern California rocky intertidal coastline from 2000 to 2024 (Collaborative Research: The role of calcifying algae as a determinant of rocky intertidal macrophyte community structure at a meta-ecosystem scale) 2026-05-21 creation erddap.bco-dmo.org bcodmo_dataset_990975_v1 BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/990975 information web browser Background Information Background information from the source information originator This dataset includes sea star size structure data collected as part of the study described below. See the "Related Datasets" section for abundance data. Mass mortality from disease epidemics can challenge the resistance and resilience of populations and communities. Assessing the impacts of such events and their consequences is crucially dependent on long-term datasets In 2013-16, sea star wasting disease (SSWD) caused population-wide crashes of the archetypal keystone species, the sea star Pisaster ochraceus, along the North American west coast. We used two long-term datasets to assess the resilience of Pisaster populations to this perturbation in Oregon: a 16-year time series (2007-2023) of annual predation rate at 7 sites, and a 23-year time series (2001-2024) of density and size of Pisaster at 8 sites. In spring 2015, a novel and massive Pisaster recruitment event occurred at all sites, averaging 3.00 ± 0.57 recruits m-2 (± SE), an 8,100% increase compared to pre-SSWD. Elevated but spatiotemporally variable recruitment has persisted over the subsequent decade. Before SSWD, population size structure was relatively stable, consisting mostly of large adults with virtually no recruitment. After the outbreak, density, average size, and biomass density declined at nearly all sites, while SSWD persisted at low levels, averaging ~4% symptomatic per year. As of the current period (2021-2024), density and biomass density had recovered at all sites and often overshot prior levels, but average body size recovered at only 3 of 7 sites. However, the 2014 crash and the post-2014 recruitment events apparently destabilized the populations; density remains more variable among years at all but two sites. BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/990975 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 -124.5651 -117.7994 33.54477 45.02575 [Belt Transect: Size] - Sea star size structure from surveys along the Oregon and Northern California rocky intertidal coastline from 2000 to 2024 (Collaborative Research: The role of calcifying algae as a determinant of rocky intertidal macrophyte community structure at a meta-ecosystem scale) 2026-05-21 creation BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/990975 information web browser Background Information Background information from the source information originator This dataset includes sea star size structure data collected as part of the study described below. See the "Related Datasets" section for abundance data. Mass mortality from disease epidemics can challenge the resistance and resilience of populations and communities. Assessing the impacts of such events and their consequences is crucially dependent on long-term datasets In 2013-16, sea star wasting disease (SSWD) caused population-wide crashes of the archetypal keystone species, the sea star Pisaster ochraceus, along the North American west coast. We used two long-term datasets to assess the resilience of Pisaster populations to this perturbation in Oregon: a 16-year time series (2007-2023) of annual predation rate at 7 sites, and a 23-year time series (2001-2024) of density and size of Pisaster at 8 sites. In spring 2015, a novel and massive Pisaster recruitment event occurred at all sites, averaging 3.00 ± 0.57 recruits m-2 (± SE), an 8,100% increase compared to pre-SSWD. Elevated but spatiotemporally variable recruitment has persisted over the subsequent decade. Before SSWD, population size structure was relatively stable, consisting mostly of large adults with virtually no recruitment. After the outbreak, density, average size, and biomass density declined at nearly all sites, while SSWD persisted at low levels, averaging ~4% symptomatic per year. As of the current period (2021-2024), density and biomass density had recovered at all sites and often overshot prior levels, but average body size recovered at only 3 of 7 sites. However, the 2014 crash and the post-2014 recruitment events apparently destabilized the populations; density remains more variable among years at all but two sites. ERDDAP tabledap 1 -124.5651 -117.7994 33.54477 45.02575 tight ERDDAPtabledapDatasetQueryAndAccess https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_990975_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 [Belt Transect: Size] - Sea star size structure from surveys along the Oregon and Northern California rocky intertidal coastline from 2000 to 2024 (Collaborative Research: The role of calcifying algae as a determinant of rocky intertidal macrophyte community structure at a meta-ecosystem scale) 2026-05-21 creation BCO-DMO info@bco-dmo.org https://osprey.bco-dmo.org/dataset/990975 information web browser Background Information Background information from the source information originator This dataset includes sea star size structure data collected as part of the study described below. See the "Related Datasets" section for abundance data. Mass mortality from disease epidemics can challenge the resistance and resilience of populations and communities. Assessing the impacts of such events and their consequences is crucially dependent on long-term datasets In 2013-16, sea star wasting disease (SSWD) caused population-wide crashes of the archetypal keystone species, the sea star Pisaster ochraceus, along the North American west coast. We used two long-term datasets to assess the resilience of Pisaster populations to this perturbation in Oregon: a 16-year time series (2007-2023) of annual predation rate at 7 sites, and a 23-year time series (2001-2024) of density and size of Pisaster at 8 sites. In spring 2015, a novel and massive Pisaster recruitment event occurred at all sites, averaging 3.00 ± 0.57 recruits m-2 (± SE), an 8,100% increase compared to pre-SSWD. Elevated but spatiotemporally variable recruitment has persisted over the subsequent decade. Before SSWD, population size structure was relatively stable, consisting mostly of large adults with virtually no recruitment. After the outbreak, density, average size, and biomass density declined at nearly all sites, while SSWD persisted at low levels, averaging ~4% symptomatic per year. As of the current period (2021-2024), density and biomass density had recovered at all sites and often overshot prior levels, but average body size recovered at only 3 of 7 sites. However, the 2014 crash and the post-2014 recruitment events apparently destabilized the populations; density remains more variable among years at all but two sites. OPeNDAP 1 -124.5651 -117.7994 33.54477 45.02575 tight OPeNDAPDatasetQueryAndAccess https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_990975_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 StarID String Starid TransectDateID String Transectdateid TransectSurveyID String Transectsurveyid SurveyID String Surveyid TransectID String Transectid GroupCode String Groupcode Region String Region Cape String Cape CapeNum int Capenum SiteCode_STARS String Sitecode_stars Site String Site SiteNum int Sitenum SiteType String Sitetype Year int Year Month int Month Day int Day Date String Date AvgSurveyDate String Avgsurveydate SurveyPeriod String Surveyperiod Season String Season SeasonCode String Seasoncode YearOfSSWS int Yearofssws DateofSSWS String Dateofssws YrSinceSSWS int Yrsincessws DiseasePhase3 String Diseasephase3 DiseasePhase4 String Diseasephase4 Transect String Transect TransectArea_m2 float Transectarea_m2 SpeciesCode String Speciescode N_Individuals float N_individuals SeaStarNum float Seastarnum Stage_Field String Stage_field LengthMethod String Lengthmethod WeightMethod String Weightmethod MeasuredArmLength_cm float Measuredarmlength_cm MeasuredWetWt_g float Measuredwetwt_g ArmLength_cm float Armlength_cm WetWt_g float Wetwt_g Stage_Arm String Stage_arm Stage_Wt String Stage_wt Stage4_Wt String Stage4_wt Diet1 String Diet1 Diet2 String Diet2 Diet3 String Diet3 Diet4 String Diet4 Diet5 String Diet5 DetailDisease String Detaildisease DiseaseCode String Diseasecode DiseaseSimple String Diseasesimple Surveyors String Surveyors Notes String Notes EnteredBy String Enteredby 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_990975_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_990975_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