Figure 1.
Daily back-calculated settlement of Stegastes partitus in reef and rubble habitat at Pickles and Sand Island Reefs combined (bars).
Timing of settlement of collected recruits was adjusted for monthly density estimates and estimated post-settlement mortality. Maximum tidal amplitude is indicated by a line, and new moons by solid circles. Asterisks indicate months when sampling did not take place.
Table 1.
Monthly variability in recruitment of Stegastes partitus to reefs in the upper Florida Keys.
Table 2.
Rayleigh statistics for lunar and tidal amplitude synchrony in settlement and successful spawning of Stegastes partitus in the upper Florida Keys.
Figure 2.
Mean otolith-derived (a) larval growth, (b) pelagic larval duration (PLD), (c) size-at-settlement, and (d) early (2 d) juvenile growth of Stegastes partitus settlement-stage larvae, recruits (1–10 d post settlement), and juveniles (11–28 d) by lunar phase of settlement.
Effect of temperature was minimized by including only 25 monthly cohorts collected from May 2003 to August 2008 with mean water temperatures of >28°C. Error bars represent SE. Different letters above the bars indicate significant relationships among age groups, within lunar phases. Different letters within the bars indicate significant relationships among lunar phases, within age groups (capital A, B denote differences within larvae, lowercase a, b denote differences within 1–10 d old recruits, lowercase x, y denote differences within 11–28 d old juveniles). Settlement-stage larvae are not included in the last panel because they had not yet settled so did not exhibit juvenile growth.
Table 3.
Results of Kruskal-Wallis tests comparing Stegastes partitus early life history traits among different phases of lunar settlement (1 = first quarter; F = full moon; 3 = third quarter; N = new moon); and among three age groups (L = larvae; R = recruits 1–10 d post-settlement; J = juveniles 11–28 d post-settlement).
Figure 3.
Mean otolith-derived (a) larval growth, (b) pelagic larval duration (PLD), (c) size-at-settlement, and (d) early (2 d) juvenile growth of Stegastes partitus settlement-stage larvae (dark gray bars), recruits (1–10 d post-settlement; light gray bars), and juveniles (11–28 d; white bars) by size of light trap pulse (larvae) and size of settlement event (recruits/juveniles).
Effects of temperature and lunar phase were minimized by including only individuals from cohorts that encountered mean water temperatures of >28°C and settled during the darker half of the lunar cycle. Error bars are SE. Different letters above the bars indicate significant differences among age groups, within events of a given size. Different letters within the bars indicate significant differences between small and large events, within age groups (capital A, B denote differences within larvae, lowercase a, b denote differences within 1–10 d old recruits, lowercase x, y denote differences within 11–28 d old juveniles). Settlement-stage larvae are not included in the last panel because they had not yet settled so did not exhibit juvenile growth.
Table 4.
Results of Mann-Whitney U tests comparing Stegastes partitus early life history traits between small and large settlement events for larvae, recruits (1–10 d post-settlement), and juveniles (1–28 d post-settlement); and among age groups (L = larvae; R = recruits; J = juveniles).
Figure 4.
Mean otolith-derived (a) larval growth, (b) pelagic larval duration (PLD), (c) size-at-settlement, and (d) early (2 d) juvenile growth for two different age groups of Stegastes partitus recruits by habitat type (i.e., reef crest and rubble).
Effect of temperature was minimized by including only 25 monthly cohorts collected from May 2003 to August 2008 that encountered mean water temperatures of >28°C. Error bars are SE. Different letters above the bars indicate significant relationships between habitats for a given age group. Different letters within the bars indicate significant relationships between age groups (selective mortality) by habitat (a, b denote differences between recruits (1–10 d post-settlement) and juveniles (11–28 d) in reef habitats, x, y denote differences between recruits and juveniles in rubble habitats.
Figure 5.
Relationship between mean otolith-derived (a) larval growth and (b) size-at-settlement of Stegastes partitus recruits and adult conspecific density from June 2007 to August 2008.