Dataset: Clam Outplants
Deployment: Grosholz

Clam outplants in Seadrift and Bolinas Lagoon for 2015

Principal Investigator:

Edwin Grosholz (University of California-Davis, UC Davis)

Co-Principal Investigator:

Catherine de Rivera (Portland State University, PSU)

Gregory E. Ruiz (Portland State University, PSU)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

RAPID: A rare opportunity to examine overcompensation resulting from intensive harvest of an introduced predator (Invasive_predator_harvest)

Current State:

Final no updates expected

Version:

15 June 2017

Version Date:

2017-06-15

Data URL:

https://www.bco-dmo.org/dataset-deployment/704872/data

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Description

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

Methods & Sampling

Dataset acquisition description

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:
Turner, 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

Data Processing Description

Dataset Processing Description

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.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1514893	NSF Division of Ocean Sciences

Instruments

None available yet

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
lagoon	Name of the lagoon	unitless	site
site	Site within the lagoon	unitless	site
lat	Latitude of the site	decimal degrees	lat
lon	Longitude of the site	decimal degrees	lon
date	Calendar date (yyyy-mm-dd) that tethered crabs were outplanted. Duration of all outplants was 24 hours.	unitless	date
species_code	Species identifier/code	unitless	taxon_code
species	Species or taxon	unitless	taxon
size	Carapace width of tethered crab in millimeters	millimeters (mm)	width
outcome_code	Outcome identifier/code	unitless	no_bcodmo_term
outcome	Outcome description	unitless	no_bcodmo_term

Database

Contribute Data

Dataset: Clam Outplants
Deployment: Grosholz

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Clam OutplantsDeployment: Grosholz

Dataset acquisition description

Dataset Processing Description

Dataset: Clam Outplants
Deployment: Grosholz