Table 1. Review of previously-published analyses of Blue Crab megalopae daily settlement rates.
| Study | Region (Locale) | Years | Season | Lunar | Auto-correlation | Hydro-dynamics | Wind | Other |
|---|---|---|---|---|---|---|---|---|
| *Goodrich et al. 1989 [13] | MAB (Chesapeake) | 1985–1987 | —- | trend | —- | bay volume | —- | —- |
| Van Montfrans et al. 1990 [14] | MAB (Chesapeake) | 1985–1988 | —- | quarter (3rd) | —- | sea level flux a | —- | —- |
| Boylan & Wenner 1993 [15] | SAB (Charleston) | 1987–1988 | —- | quarter (4th), days (7, 24) | —- | sea level flux | speed, direction | bottom temp, bottom salinity, surface temp, surface salinity, precipitation |
| Jones & Epifanio 1995 [16] | MAB (Delaware) | 1989–1992 | —- | Quarter | —- | spring tide, sea level anomaly | alongshore speed | —- |
| Mense et al. 1995 [17] | SAB (North Carolina) | 1990–1992 | —- | quarter b (1st, 4th) | —- | —- | speed, direction | surface temp, air temp, surface salinity |
| Perry et al. 1995[18] | GOM (Mississippi) | 1991–1992 | —- | quarters | —- | predicted flux | speed, direction | temp, salinity |
| Van Montfrans et al. 1995[11] | MAB (various) | 1989–1992 | —- | quarter (variable) | —- | —- | —- | —- |
| Rabalais et al. 1995 [12] (baseline this study) | GOM (various) | 1990–1992 | —- | quarter b (1st) c | —- | sea level flux | direction | surface temp, surface salinity |
| Morgan et al. 1996 [19] | GOM (Mobile Bay) | 1990–1991 | — | Trend | — | sea level flux | speed, direction | surface temp |
| Hasek & Rabalais 2001 [20] | GOM (Louisiana) | 1990–1991 | — | quarter b (3rd), declination | — | sea level flux, sea level max | speed, direction | surface temp, surface salinity |
| Spitzer et al. 2003 [21] | GOM (Mobile Bay) | 1997–1998 | — | Quarter | — | sea level flux | speed, direction, peak wind | temp, salinity |
| *Forward et al. 2004 [22] | SAB (North Carolina) | 1993–2002 | trend | Trend | 3 days | night max level | speed, direction | — |
| Bishop et al. 2010 [23] | SAB (Georgia) | 2005 | trend | — | — | sea level max, night max level | speed, direction | temp, surface salinity |
| *Eggleston et al. 2010 [24] | SAB (Pamlico Sound) | 1996–2005 | —- | Quarter | 2–3 days | sea level flux, night flood tide | speed, direction d | storm days |
| *Ogburn et al. 2012 [25] | SAB (Newport River) | 1993–2009 | trend | quarter b | —- | night flood tides, tidal range | speed+ direction | — |
| Grey et al. 2015 (this study) | GOM (various) | 2011–2012 | trend | trend | yes | sea level flux, sea level max | alongshore, speed, direction | —- |
Regions were defined as MAB = Mid-Atlantic Bight, SAB = South Atlantic Bight, GOM = Gulf of Mexico. Explanatory variables were grouped into six categories: Season = seasonal trends, Lunar = lunar trends or quarters, Autocorrelation = autoregressive process in days, Hydrodynamics = various sea level and tidal metrics, Wind = wind speed or direction, and Other includes various temperature, salinity and storm metrics. For each study, variables found to be significantly associated with daily megalopal settlement are highlighted in bold.
*Settlement pulse correlates also investigated but not included in this table.
aCorrelation only significant during full moon periods.
bQuarters defined as: 1) lunar days 26–4, 2) lunar days 5–11, 3) lunar days 12–18, 4) lunar days 19–25.
cLunar quarter only significant in some years and some sites.
dSignificant correlation in most years.