Characteristics of the seven central Pacific atolls, including the four northern Line Islands and three additional equatorial atolls.

Quantitative environment and biota data are presented as means with variability presented as either standard error (reported with ‘±’), standard deviation (reported in parentheses), or 95% confidence intervals (reported in braces). Abbreviations are as follows: SST, Sea surface temperature; DHW, Degree heating weeks; Chl a, Chlorophyll a; DIN, Dissolved inorganic nitrogen; SRP, Soluble reactive phosphorous. Details on the estimations and calculations are presented in the Methods and Supplemental Data.
aUnpublished data from NOAA Fisheries, Pacific Islands Fisheries Science Center, Coral Reef Ecosystem Division and US Fish and Wildlife Service. These data were collected using similar methods as those used in this study.
bThis study
cNOAA data showed a total fish biomass of 1020 g m−2 and 49% coral cover at Kingman, and 520 g m−2 and 45% at Palmyra. Differences in estimates of biomass across the different data sets may be due to a difference in sampling effort, higher variability in habitat types in the NOAA data, and changes over time.