Research Article

The Impacts of Ex Situ Transplantation on the Physiology of the Taiwanese Reef-Building Coral Seriatopora hystrix

Table 2

Two-way, repeated-measures ANOVA of physiological parameter data. Four physiological response variables were measured both in situ and ex situ (after three weeks of acclimation and one week of experimentation) in corals from either Houbihu (HBH) or Houwan (HWN). “Stab”: stable temperature treatment (TT). “Var”: variable TT. Letters trailing treatment groups in the “Post hoc tests” column represent Tukey’s honestly significant difference groupings ( ). Site of origin (SO) comparisons were conducted across all data, regardless of TT and sampling time and so do not represent the in situ SO differences, whose values were compared with Student’s -tests or Wilcoxon rank-sum tests and are discussed in the text and displayed in Figures 2(a), 2(d), 2(g), and 2(j). “Time” corresponds to the ex situ versus in situ comparison, as there was a four-week gap between the two sampling times. Time × SO × TT test statistics are not shown.

Source of variationExact Post hoc tests

Symbiodinium density (cells cm−2)a
SO 2.0470.190
TT0.09400.767
SO × TT0.01040.921
Time0.0001.000
Time × SO3.310.1064
Time × TT0.4220.534
All within1.520.282

Areal chlorophyll a concentration (µg cm−2)
SO 0.03530.856
TT8.960.0172stab > var
SO × TT34.0<0.001HWN stab (A), HBH var (AB), HBH stab (BC), HWN var (C)
Time113<0.001ex situ > in situ
Time × SO0.1140.744
Time × TT1.280.290
All within3.480.0704

Cell-specific chlorophyll a concentration (pg cell−1)
SO 7.560.0251HWN > HBH
TT9.300.0158stab > var
SO × TT54.9<0.001HWN stab (A), HBH var (B), HBH stab (C), HWN var (C)
Time211<0.001ex situ > in situ
Time × SO3.610.0940
Time × TT8.460.0196stab ex situ (A), var ex situ (A), var in situ (B), stab in situ (B)
All within10.530.0038

Maximum (dark-adapted) quantum yield of photosystem II ( / )
SO 19.10.0024HWN > HBH
TT34.7<0.001stab > var
SO × TT0.00780.932
Time12.00.0084ex situ > in situ
Time × SO0.08440.779
Time × TT0.60790.458
All within0.4230.742

Rank-transformed data.