http://lod.bco-dmo.org/id/dataset/528964
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2014-09-30
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
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)
2015-07-15
publication
2015-07-15
revision
BCO-DMO Linked Data URI
2015-07-15
creation
http://lod.bco-dmo.org/id/dataset/528964
Brian Gaylord
University of California - Davis: Bodega Marine Laboratory
principalInvestigator
Michael N. Dawson
University of California-Merced
principalInvestigator
Richard K. Grosberg
University of California-Davis
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: 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]
Counts of Henricia sp. adults and recruits in quadrats, California coast Dataset Description: <p>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.</p>
<p>This data set includes counts of <em>Henricia</em> sp. (Pacific blood star) in quadrats along the California coast from 36.3 N to 39.2 N.</p>
<p><strong>Access Restriction</strong>: 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]</p>
<p>Version 4 (2015-07-15) replaces version 3 (2014-10-03). Values for the sampled area were corrected.</p>
<p><strong>Related Datasets:</strong><br />
<a href="http://www.bco-dmo.org/dataset/541003">Purple urchin density</a><br />
<a href="http://www.bco-dmo.org/dataset/541036">Purple urchin density by depth</a><br />
<a href="http://www.bco-dmo.org/dataset/528940">Seastar and chiton counts - quadrats and swaths</a><br />
<a href="http://www.bco-dmo.org/dataset/562467" target="_blank">CHIPS02 - seastar chiton urchin counts in quadrats</a></p> Methods and Sampling: <p>Quadrats for <em>C. stelleri, Henricia sp., Leptasterias sp., P. ochraceus</em>:<br />
We exhaustively searched 32-40 one-meter square quadrats per site (i.e. 16-20 per each of 2 areas), recording GPS waypoint, time, percent cover of major habitat types, and abundances and sizes of target species for each quadrat. Quadrat locations were selected by first finding one of the target habitat types - surf grass, low-zone red algae, coralline turf, cobble or boulder field, urchin pools with pits either empty or occupied, or mussel bed - selecting a starting point haphazardly, and then using a random numbers table to choose specific quadrat locations. Some sites had fewer than 32 quadrats or quadrats smaller than one-square meter due to the limited time in which we could work in suitable habitat. For mussel habitat one 0.25 m x 0.25 m quadrat was used. For Jurgens et al. (submitted) we calculated the number of each target species summed across all quadrats surveyed within each of the two areas within sites.&nbsp;</p>
<p>Swaths for <em>C. stelleri, Henricia sp., Leptasterias sp., P. ochraceus</em>:<br />
Timed, GPS-tracked, 2 m wide swath transects were nested within each of the two areas within all sites. &nbsp;From a distance, an approximate starting point and orientation (with landmarks) for the starting transect was selected. The GPS was set to auto-record a trackpoint every 6 seconds. Transects ran from the most shoreward to the most seaward possible suitable habitat at approximately 10 m intervals along shore, particularly targeting the low zone when the tide was the lowest, with as many transects being done as permitted by the tide. The start and end of each transect was GPS waypointed and recorded. &nbsp;All target species were searched for across the 2 m wide swath, with intertidal zones and habitat type recorded. A waypoint was recorded for each individual target species, with any additional species found within a meter being counted and recorded for the same waypoint. When the field of view was clear some swaths were extended to 4 meters wide. For Jurgens et al. (submitted) we calculated the number of each target species summed across all swaths within each of the two areas within sites.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1243970 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1243970
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1243958 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1243958
completed
Brian Gaylord
University of California - Davis: Bodega Marine Laboratory
707-875-1940
Bodega Marine Laboratory & Department of Evolution and Ecology 2099 Westshore Road, P.O. Box 247
Bodega Bay
CA
94923
USA
bpgaylord@ucdavis.edu
pointOfContact
Michael N. Dawson
University of California-Merced
209-228-4056
School of Natural Sciences 5200 North Lake Road
Merced
CA
95343
United States
mdawson@ucmerced.edu
pointOfContact
Richard K. Grosberg
University of California-Davis
Department of Ecology and Evolution 1 Shields Ave
Davis
CA
95616
USA
rkgrosberg@ucdavis.edu
pointOfContact
asNeeded
Dataset Version: 4
Unknown
site
lat
lon
loss_zone
date_survey
area
count_Henricia
GPS
theme
None, User defined
site
latitude
longitude
No BCO-DMO term
date
count
featureType
BCO-DMO Standard Parameters
Global Positioning System Receiver
instrument
BCO-DMO Standard Instruments
CalifCoast_Gaylord_CHIPS
service
Deployment Activity
North-central, CA: Andrew Molean State Park to Manchester State Park
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Ecological & genetic recovery from a massive invertebrate die-off along the central coast of California
https://osprey.bco-dmo.org/project/521152
Ecological & genetic recovery from a massive invertebrate die-off along the central coast of California
<p>This project is a Collaborative Research project funded by an NSF RAPID grant.</p>
<p><em>Description from NSF award abstract:</em><br />
The potentially important role that larval dispersal may play in determining gene flow, distributions, and population structure of marine invertebrates remains unclear despite many hundreds of descriptive comparisons of pelagic duration and population genetic structure. This lack of clarity suggests many factors may influence population genetic structure and their interactions may be complex. Difficulties studying these factors include (under normal circumstances) distinguishing local from exogenous recruitment and therefore the true distribution of dispersal distances. For example, experiments that normally could be undertaken to explore this issue are very small scale relative to the distances that many marine taxa may disperse.</p>
<p>In August 2011, a large-scale natural removal experiment was initiated along a 100 km stretch of the central California coast. The PIs propose to use this rare opportunity to clarify the effects of dispersal and species interactions on marine population genetic variation and community structure. They propose to study three species that suffered very high rates of mortality: an ecosystem engineer (<em>Strongylocentrotus purpuratus</em>, ~100% mortality), a keystone species (<em>Pisaster ochraceus</em>, ~10-70% mortality), and one of its competitors (<em>Leptasterias sp.</em>, ~100% mortality). Their objectives during this first year following the natural large-scale die-off are to:</p>
<p>(1) quantify the abundance and distribution of the target species at sites across the impacted range and reference sites to the south and north,<br />
(2) develop and use genetic markers to identify the sources and dispersal distances of new recruits of <em>P. ochraceus</em>, <em>Leptasterias sp.</em>, and <em>S. purpuratus</em> that recolonize the impacted range, and<br />
(3) describe changes in abundance of these three species and their prey and competitors at sites throughout the impacted range.</p>
CHIPS
largerWorkCitation
project
eng; USA
biota
oceans
North-central, CA: Andrew Molean State Park to Manchester State Park
2015-07-15
Northeastern Pacific (northern California) 38-39 N
0
BCO-DMO catalogue of parameters from 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)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/528975.rdf
Name: site
Units: unitless
Description: <p>survey site name</p>
http://lod.bco-dmo.org/id/dataset-parameter/528976.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/528977.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/528978.rdf
Name: loss_zone
Units: unitless
Description: <p>The site is inside or outside the region across which intertidal S. purpuratus were extirpated. Unknown means that there was no pre-HAB urchin population.</p>
http://lod.bco-dmo.org/id/dataset-parameter/528979.rdf
Name: date_survey
Units: YYYY-MM-DD
Description: <p>date of survey</p>
http://lod.bco-dmo.org/id/dataset-parameter/528981.rdf
Name: area
Units: m^2
Description: <p>Total square meters surveyed at Site; Year or time-period may be specified.</p>
http://lod.bco-dmo.org/id/dataset-parameter/528982.rdf
Name: count_Henricia
Units: unitless
Description: <p>number of Henricia adults and recruits found within one quadrat</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2201
https://datadocs.bco-dmo.org/file/EKKygYpHpvlBDY/henricia.csv
henricia.csv
Primary data file for dataset ID 528964
download
https://osprey.bco-dmo.org/dataset/528964/data/download
download
onLine
dataset
<p>Quadrats for <em>C. stelleri, Henricia sp., Leptasterias sp., P. ochraceus</em>:<br />
We exhaustively searched 32-40 one-meter square quadrats per site (i.e. 16-20 per each of 2 areas), recording GPS waypoint, time, percent cover of major habitat types, and abundances and sizes of target species for each quadrat. Quadrat locations were selected by first finding one of the target habitat types - surf grass, low-zone red algae, coralline turf, cobble or boulder field, urchin pools with pits either empty or occupied, or mussel bed - selecting a starting point haphazardly, and then using a random numbers table to choose specific quadrat locations. Some sites had fewer than 32 quadrats or quadrats smaller than one-square meter due to the limited time in which we could work in suitable habitat. For mussel habitat one 0.25 m x 0.25 m quadrat was used. For Jurgens et al. (submitted) we calculated the number of each target species summed across all quadrats surveyed within each of the two areas within sites.&nbsp;</p>
<p>Swaths for <em>C. stelleri, Henricia sp., Leptasterias sp., P. ochraceus</em>:<br />
Timed, GPS-tracked, 2 m wide swath transects were nested within each of the two areas within all sites. &nbsp;From a distance, an approximate starting point and orientation (with landmarks) for the starting transect was selected. The GPS was set to auto-record a trackpoint every 6 seconds. Transects ran from the most shoreward to the most seaward possible suitable habitat at approximately 10 m intervals along shore, particularly targeting the low zone when the tide was the lowest, with as many transects being done as permitted by the tide. The start and end of each transect was GPS waypointed and recorded. &nbsp;All target species were searched for across the 2 m wide swath, with intertidal zones and habitat type recorded. A waypoint was recorded for each individual target species, with any additional species found within a meter being counted and recorded for the same waypoint. When the field of view was clear some swaths were extended to 4 meters wide. For Jurgens et al. (submitted) we calculated the number of each target species summed across all swaths within each of the two areas within sites.</p>
Specified by the Principal Investigator(s)
<p>To estimate swath length we first summed the Euclidean distances between consecutive GPS trackpoints. &nbsp;Given the GPS had an error of +/- 3 meters we smoothed the GPS tracks by averaging across two trackpoints and then by three. We selected a window size of two with which to estimate our total transect length to adjust for the noise in our swath transects but to minimize oversmoothing. &nbsp;(see example figure below). We identified and removed outlying trackpoints that led to a Euclidean distance &gt;=8 meters (likely due to temporarily poor satellite signal). The distance was then recalculated between the trackpoints immediately preceding and following the removed trackpoint. Total transect search area was calculated by multiplying the total adjusted transect length by swath width. Total transect search time was estimated using field notes and GPS waypoints and trackpoints, removing 6-second intervals where &lt; 0.05 m were traveled (suggesting this was time during which notes were being written or tissues samples were being collected).</p>
<p>Swathfigure: Sample GPS tracks for two transects at Iversen Point, Mendocino County. The blue line is the original unsmoothed track.&nbsp; The red line represents a window size of two, averaging latitudes and longitudes across each pair of consecutive trackpoints. The green line represents a window size of 3, averaging across 3 trackpoints.</p>
<p><a href="http://dmoserv3.whoi.edu/data_docs/CHIPS01/fig_swath_Dawson-Gaylord.png" target="_blank"><img alt="map of sample track" src="https://datadocs.bco-dmo.org/d3/data_docs/CHIPS01/fig_swath_Dawson-Gaylord.png" style="height:358px; width:500px" /></a></p>
<p><strong>BCO-DMO Processing Notes:</strong></p>
<ul>
<li>added conventional header with dataset name, PI name, version date, reference information</li>
<li>renamed parameters to BCO-DMO standard</li>
<li>sorted by latitude, high to low, and date</li>
</ul>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
GPS
GPS
PI Supplied Instrument Name: GPS Instrument Name: Global Positioning System Receiver Instrument Short Name:GPS Instrument Description: The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis. The U.S. Air Force develops, maintains, and operates the space and control segments of the NAVSTAR GPS transmitter system. Ships use a variety of receivers (e.g. Trimble and Ashtech) to interpret the GPS signal and determine accurate latitude and longitude. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/POS03/
Deployment: CalifCoast_Gaylord_CHIPS
CalifCoast_Gaylord_CHIPS
shoreside Calif_shore
shoreside
CalifCoast_Gaylord_CHIPS
Brian Gaylord
University of California - Davis: Bodega Marine Laboratory
shoreside Calif_shore
shoreside