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We conducted short-term size-based predation (=cannibalism) experiments in which five smaller green crabs were placed in a laboratory mesocosm with a large adult green crab.\u00a0Size ratios of large to small crabs were experimentally varied using adult crabs of three size classes and juvenile crabs as small as were available representing recent recruits. Adult crabs were starved for 48 hours prior to the trial.\u00a0Alternate prey in the form of small clams were also available in the mesocosms.\u00a0Experiments were run for 24 hours after which are remaining crabs were retrieved and remeasured. All crabs were collected from Seadrift Lagoon, CA.\u00a0
\nSee Turner et al. (2016)\u00a0Biological Invasions\u00a018: 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\u2013548. doi:10.1007/s10530-015-1026-9
Green crab size based predation trials conducted in laboratory mesocosms at Romberg Tiburon Center, Tiburon, CA in 2015.
Data were entered and checked in MS Excel spreadsheets.\u00a0Statistical analyses were run with either (R Development Core Team) or SAS (Statistical Analysis Systems).
\nBCO-DMO Processing:
\n- re-formatted date to yyyy-mm-dd;
\n- re-formatted time to HHMM;
\n- modified parameter names to conform with BCO-DMO naming conventions (changed to lowercase from mixed case; replaced spaces with underscores);\u00a0
\n- replaced commas with semi-colons.