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.\u00a0Arrays 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.
\nSee 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.\u00a0Assessing population increase as a possible outcome to management of invasive species. Biological Invasions, 18(2),\u00a0pp 533\u2013548. doi:10.1007/s10530-015-1026-9
Clam outplants in Seadrift and Bolinas Lagoons (Central California coast, shallow subtidal (<2 m depth)) for 2015.
Data were entered and checked in MS Excel spreadsheets.\u00a0Statistical analyses\u00a0were run with either (R Development Core Team) or SAS (Statistical Analysis Systems).
\nNote that all Seadrift sites are very close together and thus one lat/lon pair are used to represent all sites within Seadrift.
\nBCO-DMO Processing:
\n- re-formatted date to yyyy-mm-dd;
\n- modified parameter names to conform with BCO-DMO naming conventions\u00a0(removed units, changed to lowercase from mixed case);
\n- created lat and lon columns and added values from metadata page;\u00a0
\n- created column for full species names and added names corresponding to each code from metadata page; changed 'species' column provided to 'species_code';
\n- changed 'outcome' column provided to 'outcome_code'; created column for full text of outcome and added text corresponding to each code from metadata page;
\n- replaced commas with semi-colons (e.g. in \"Alive, unharmed\");
\n-\u00a0replaced spaces with underscores;
\n- replaced blanks (missing data) with 'nd';
\n- sorted by lagoon, site, then date.