©2020 Biological and Chemical Oceanography Data Management Office.Twenty accessible rocky intertidal sites were selected to span the ‘kill-zone’ and peripheral locations (see list of sites in Jurgens et al. submitted). Two rocky intertidal areas were sampled per site, usually one on either side of the point of entry onto the beach and separated by approximately 100 m. We used quadrats (1m2 [4 * 0.25 m^2] or 0.0625 m^2) and swaths (2 m wide transects) to estimate juvenile and adult abundance for each target species.
This data set includes counts of Henricia sp. (Pacific blood star) in quadrats along the California coast from 36.3 N to 39.2 N.
Access Restriction: Access to these data are restricted until publication of the associated manuscript, which is currently in review at PLOS ONE Progress Series. [2015-02-05]
Version 4 (2015-07-15) replaces version 3 (2014-10-03). Values for the sampled area were corrected.
Related Datasets:
Purple urchin density
Purple urchin density by depth
Seastar and chiton counts - quadrats and swaths
CHIPS02 - seastar chiton urchin counts in quadrats
Gaylord, B., Dawson, M. N., Grosberg, R. K. (2015) Counts of Henricia sp. adults and recruits in quadrats, north-central California coast: Andrew Molean State Park to Manchester State Park from 2005-2014 (CHIPS project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 4) Version Date 2015-07-15 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/528964 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.