1b:I[42426,["/_next/static/immutable/chunks/1xctgzqre-wsy.js","/_next/static/immutable/chunks/06_-wz6pdtp2b.js","/_next/static/immutable/chunks/30e52g49hg40p.js","/_next/static/immutable/chunks/02yq6tul2z-oh.js","/_next/static/immutable/chunks/10bx_ec2vj7n_.js","/_next/static/immutable/chunks/33bfn03fo8xnt.js","/_next/static/immutable/chunks/0tfjf78scu61b.js","/_next/static/immutable/chunks/31xnvej4n1bi9.js"],"default"] 1c:T459,

Data were entered and checked in MS Excel spreadsheets. Statistical analyses were run with either (R Development Core Team) or SAS (Statistical Analysis Systems).

Note that all Seadrift sites are very close together and thus one lat/lon pair are used to represent all sites within Seadrift.

BCO-DMO Processing:
- re-formatted date to yyyy-mm-dd;
- modified parameter names to conform with BCO-DMO naming conventions (removed units, changed to lowercase from mixed case);
- created lat and lon columns and added values from metadata page;
- created column for full species names and added names corresponding to each code from metadata page; changed 'species' column provided to 'species_code';
- changed 'outcome' column provided to 'outcome_code'; created column for full text of outcome and added text corresponding to each code from metadata page;
- replaced commas with semi-colons (e.g. in "Alive, unharmed");
- replaced spaces with underscores;
- replaced blanks (missing data) with 'nd';
- sorted by lagoon, site, then date.

1d:Tc25,The usual expectation is that when populations of plants and animals experience repeated losses to predators or human harvest, they would decline over time. If instead these populations rebound to numbers exceeding their initial levels, this would seem counter-intuitive or even paradoxical. However, for several decades mathematical models of population processes have shown that this unexpected response, formally known as overcompensation, is not only possible, but even expected under some circumstances. In what may be the first example of overcompensation in a marine system, a dramatic increase in a population of the non-native European green crab was recently observed following an intensive removal program. This RAPID project will use field surveys and laboratory experiments to verify that this population explosion results from overcompensation. Data will be fed into population models to understand to what degree populations processes such as cannibalism by adult crabs on juvenile crabs and changes in maturity rate of reproductive females are contributing to or modifying overcompensation. The work will provide important insights into the fundamental population dynamics that can produce overcompensation in both natural and managed populations. Broader Impacts include mentoring graduate trainees and undergraduate interns in the design and execution of field experiments as well as in laboratory culture and feeding experiments. The project will also involve a network of citizen scientists who are involved with restoration activities in this region and results will be posted on the European Green Crab Project website. This project aims to establish the first example of overcompensation in marine systems. Overcompensation refers to the paradoxical process where reduction of a population due to natural or human causes results in a greater equilibrium population than before the reduction. A population explosion of green crabs has been recently documented in a coastal lagoon and there are strong indications that this may be the result of overcompensation. Accelerated maturation of females, which can accompany and modify the expression of overcompensation has been observed. This RAPID project will collect field data from this unusual recruitment class and conduct targeted mesocosm experiments. These will include population surveys and mark-recapture studies to measure demographic rates across study sites. Laboratory mesocosm studies using this recruitment class will determine size specific mortality. Outcomes will be used in population dynamics models to determine to what degree overcompensation has created this dramatic population increase. The project will seek answers to the following questions: 1) what are the rates of cannibalism by adult green crabs and large juveniles on different sizes of juvenile green crabs, 2) what are the consequences of smaller size at first reproduction for population dynamics and for overcompensation and 3) how quickly will the green crab population return to the levels observed prior to the eradication program five years earlier?6:["$","$L1b",null,{"dataset":{"_id":"701701","description":"

Clam outplants in Seadrift and Bolinas Lagoons (Central California coast, shallow subtidal (<2 m depth)) for 2015.

\n","problem":"","acquisition":"

We conducted experiments in which groups of clams were outplanted in Seadrift and adjacent Bolinas Lagoon, CA. Sites were accessed by foot via shore entry. At each of three sites within each bay, we placed a small section of plastic mesh to which 15 small clams (generally <10 mm) had been attached. Arrays were placed just below the sediment surface in shallow subtidal areas (<2 m) and retrieved 24 hours later. Clams were scored for presence/absence and any damage or remaining shell fragments.

See Turner et al. (2016) Biological Invasions 18: 533-548 for additional methodological details:
\nTurner, B.C., de Rivera, C.E., Grosholz, E.D., & Ruiz, G.M. 2016. Assessing population increase as a possible outcome to management of invasive species. Biological Invasions, 18(2), pp 533–548. doi:10.1007/s10530-015-1026-9

\n","processing":"$1c","bcodmoProcessing":"","title":"Clam outplant experiments conducted in Seadrift and Bolinas Lagoon for 2015","nickname":"Clam Outplants","dataUrl":"","currentState":"Final no updates expected","currentStateId":"7","validated":true,"restricted":false,"version":"1","version_date":"2017-06-15T04:00:00.000Z","abstract":"Clam outplants in Seadrift and Bolinas Lagoons (Central California coast, shallow subtidal (<2 m depth)) for 2015.","citation":"Grosholz, E., de Rivera, C., Ruiz, G. (2017) Clam outplant experiments conducted in Seadrift and Bolinas Lagoon for 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2017-06-15 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.701701.1 [access date]","citationParts":{"identifier":"doi:10.1575/1912/bco-dmo.701701.1","versionDate":"2017-06-15","versionId":"1","year":"2017","title":"Clam outplant experiments conducted in Seadrift and Bolinas Lagoon for 2015","authors":"Grosholz, E., de Rivera, C., Ruiz, G.","publisher":"Biological and Chemical Oceanography Data Management Office (BCO-DMO)."},"doi":"10.1575/1912/bco-dmo.701701.1","release_date":null,"field_dataset_location":"","temporal_extent":{"start":"2014-09-11T04:00:00.000Z","end":"2015-08-20T04:00:00.000Z"},"temporal":{"resolution":"time:unitDay","type":"time:Interval","start":{"value":"1410408000","label":"2014-09-11"},"end":{"value":"1440043200","label":"2015-08-20"}},"spatial_extent":{"shape":"polygon","center":{"latitude":37.916570991474,"longitude":-122.6670494724},"wkt":"POLYGON ((-122.681003 37.906503, -122.653096 37.906503, -122.653096 37.926639, -122.681003 37.926639, -122.681003 37.906503))","north":37.926639,"east":-122.653096,"south":37.906503,"west":-122.681003},"dataset_type":["Other Field Results"],"keywords":["biota","oceans"],"data_files":[{"id":"901636","title":"clam_outplants.csv","url":"https://datadocs.bco-dmo.org/dataset/701701/file/l880l5XfKNpqz/clam_outplants.csv","showTableUrl":"https://www.bco-dmo.org/dataset/701701/data/view/901636","description":"Primary data file for dataset ID 701701","filename":"clam_outplants.csv","bytesize":17398,"checksum":{"value":"c4c0a1e9fe5c4c7b85cca56c2d1e9a53","Algorithm":{"_id":"190","name":"MD5"}},"mimetype":"text/csv","fileType":{"_id":"192","name":"Comma Separated Values (.csv)"},"isErddap":"bcodmo_dataset_701701","date":"","isPublicDuringEmbargo":false,"primaryDataFile":true,"showTable":true,"restricted":false}],"supplemental_files":[],"roles":[{"role":{"_id":"138","name":"Principal Investigator"},"performedBy":{"_id":"699768","name":"Edwin Grosholz"},"performedAtOrganization":{"_id":"147","name":"University of California-Davis"}},{"role":{"_id":"140","name":"Co-Principal Investigator"},"performedBy":{"_id":"471603","name":"Gregory E. Ruiz"},"performedAtOrganization":{"_id":"215","name":"Portland State University"}},{"role":{"_id":"140","name":"Co-Principal Investigator"},"performedBy":{"_id":"699771","name":"Catherine de Rivera"},"performedAtOrganization":{"_id":"215","name":"Portland State University"}},{"role":{"_id":"145","name":"BCO-DMO Data Manager"},"performedBy":{"_id":"51498","name":"Shannon Rauch"},"performedAtOrganization":{"_id":"191","name":"Woods Hole Oceanographic Institution"}}],"deployments":[{"_id":"704849","name":"Grosholz","synonyms":[],"dates":{"start":"2009-07-07T00:00:00.000Z","end":"2019-08-08T00:00:00.000Z"},"platform":{"_id":"704848","name":"Central_CA_Coast"},"chiefScientists":[]}],"funding":[{"_id":"699764","name":"OCE-1514893","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=1514893"}],"instruments":[],"parameters":[{"_id":"701712","name":"lagoon","format":"","frictionlessType":"","description":"

Name of the lagoon

","units":{"_id":"","name":"unitless"},"type":{"_id":"1124","name":"site","description":"

Sampling site identification.

"}},{"_id":"701713","name":"site","format":"","frictionlessType":"","description":"

Site within the lagoon

","units":{"_id":"","name":"unitless"},"type":{"_id":"1124","name":"site","description":"

Sampling site identification.

"}},{"_id":"701714","name":"lat","format":"","frictionlessType":"","description":"

Latitude of the site

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"730","name":"latitude","description":"

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

"}},{"_id":"701715","name":"lon","format":"","frictionlessType":"","description":"

Longitude of the site

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"731","name":"longitude","description":"

longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes

"}},{"_id":"701716","name":"date","format":"","frictionlessType":"","description":"

Calendar date (yyyy-mm-dd) that tethered crabs were outplanted. Duration of all outplants was 24 hours.

","units":{"_id":"","name":"unitless"},"type":{"_id":"1070","name":"date","description":"

date; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (http://www.iso.org/iso/home/standards/iso8601.htm)

"}},{"_id":"701717","name":"species_code","format":"","frictionlessType":"","description":"

Species identifier/code

","units":{"_id":"","name":"unitless"},"type":{"_id":"995","name":"taxon_code","description":"

taxonomic group or entity code, such as the AphiaID (from the World Register of Marine Species), NCBI taxon_id, or the ten digit number from the NODC Taxonomic List, v. 8.

"}},{"_id":"701718","name":"species","format":"","frictionlessType":"","description":"

Species or taxon

","units":{"_id":"","name":"unitless"},"type":{"_id":"994","name":"taxon","description":"

taxonomic group or entity. This may be a family, class, genus, species, etc.; usually this parameter will contain a mixture of taxonomic entities.

"}},{"_id":"701719","name":"size","format":"","frictionlessType":"","description":"

Carapace width of tethered crab in millimeters

","units":{"_id":"","name":"millimeters (mm)"},"type":{"_id":"511577","name":"width","description":"

Width is a one-dimenstional extent equal to the distance from one side of an object to another side that is opposite. See dataset for units.

"}},{"_id":"701720","name":"outcome_code","format":"","frictionlessType":"","description":"

Outcome identifier/code

","units":{"_id":"","name":"unitless"},"type":{"_id":"1073","name":"no_bcodmo_term","description":"

An association with a community-wide standard parameter has not yet been made.

"}},{"_id":"701721","name":"outcome","format":"","frictionlessType":"","description":"

Outcome description

","units":{"_id":"","name":"unitless"},"type":{"_id":"1073","name":"no_bcodmo_term","description":"

An association with a community-wide standard parameter has not yet been made.

"}}],"related_publications":[{"id":"787290","citation":"Turner, B. C., de Rivera, C. E., Grosholz, E. D., & Ruiz, G. M. (2015). Assessing population increase as a possible outcome to management of invasive species. Biological Invasions, 18(2), 533–548. doi:10.1007/s10530-015-1026-9\r\n","relation_type":["Methods"],"relation_desc":""}],"related_datasets":[],"services":[{"grouping":"","items":[{"name":"View Data","description":"An in-browser view of the primary tabular data file","url":"https://www.bco-dmo.org/dataset/701701/data/view","contentType":"text/html","actionType":"view"}]},{"grouping":"ERDDAP","items":[{"name":"SUBSET DATA","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.html","contentType":"text/html","actionType":"tool"},{"name":"VIEW TABLE","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.htmlTable","contentType":"text/html","actionType":"view"},{"name":"CSV","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.csv","contentType":"text/csv","actionType":"download"},{"name":"TSV","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.tsv","contentType":"text/tsv","actionType":"download"},{"name":"GeoJSON","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.geoJson","contentType":"application/geo+json","actionType":"download"},{"name":"MATLAB","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.mat","contentType":"text/x-matlab","actionType":"download"},{"name":"netCDF","description":"","url":"https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_701701.nc","contentType":"application/x-netcdf","actionType":"download"}]},{"grouping":"Metadata","items":[{"name":"HTML","description":"A simple HTML page of the dataset metadata","url":"https://www.bco-dmo.org/dataset/701701/description","contentType":"text/html","actionType":"view"},{"name":"PDF","description":"A PDF of the HTML dataset metadata","url":"https://www.bco-dmo.org/dataset/701701/Dataset_description.pdf","contentType":"application/pdf","actionType":"download"},{"name":"ISO 19115-2 (NOAA Profile)","description":"","url":"https://www.bco-dmo.org/dataset/701701/iso","contentType":"application/xml","actionType":"download"}]}],"programs":[],"projects":[{"_id":"699765","name":"RAPID: A rare opportunity to examine overcompensation resulting from intensive harvest of an introduced predator","acronym":"Invasive_predator_harvest","description":"$1d"}],"archives":[{"id_value":"10.1575/1912/bco-dmo.701701.1","url":"https://doi.org/10.1575/1912/bco-dmo.701701.1","date_assigned":"2020-01-14","version_date":"2017-06-15","archiver":"Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)","archiver_id":"272"}],"license":{"name":"Creative Commons Attribution 4.0","id":"CC-BY-4.0","uri":"https://creativecommons.org/licenses/by/4.0/","spdxUri":"https://spdx.org/licenses/CC-BY-4.0"},"metrics":{"views":{"count":88},"downloads":{"count":298}}},"fileId":"901636"}]