Increasing nitrogen loading in the Gulf of Mexico undermines coral reef resilience

This spreadsheet compiles annually resolved and auxiliary environmental, geochemical, climatic, and river-basin variables used to compare nitrogen isotope records from West Flower Garden Banks (WFGB) and Cuba with potential environmental drivers of coral disease outbreaks. Each row appears to represent a year-based observation or aligned annual value from one or more datasets. Because the sheet combines multiple time series, some columns may contain missing values where a given record is not available for that year. ## Column descriptions | Column name | Description || `Year wfgb` | Year corresponding to the West Flower Garden Banks (WFGB) coral d15N record. || `wfgb23` | WFGB coral d15N values from the core that ends in 2023. || `wfgb05` | WFGB coral d15N values from the core that ends in 2005. || `wfgb_average` | Mean WFGB \d15N value calculated from the available WFGB records. || `wfgb_norm` | Normalized WFGB d15N timeseries. || `Year model N` | Year corresponding to the modeled nitrogen-related dataset. || `model N` | Modeled nitrogen variable. || `MISS_BASIN_y` | Year corresponding to Mississippi Basin agricultural or watershed data. || `MISS_BASIN_N_use(kg.ha-1)` | Nitrogen use in the Mississippi Basin, expressed in kilograms per hectare. Likely fertilizer or agricultural nitrogen application intensity. || `Year_cuba` | Year corresponding to the Cuba coral d15N record. || `cuba_d15N` | Coral-bound d15N values from the Cuba record. || `cuba_norm` | Normalized Cuba \d15N timeseries. || `Year AMM` | Year corresponding to Atlantic Meridional Mode (AMM)-related data. || `AMM_SST` | Sea surface temperature component or AMM-related SST index. || `AMM_Wind` | Wind component or AMM-related wind index. || `AMO` | Atlantic Multidecadal Oscillation index value. || `AMO_year` | Year associated with the annual AMO dataset. || `AMO_monthly` | Monthly AMO index value. || `NAO_monthly` | Monthly North Atlantic Oscillation index value. || `SST at FGB (OIv2SST)` | Sea surface temperature at Flower Garden Banks from NOAA Optimum Interpolation SST v2. || `SST norm` | Normalized SST series for Flower Garden Banks. || `Annual SST` | Annual mean sea surface temperature. || `Standardized SST` | Standardized annual SST series. || `year ERSST` | Year corresponding to the ERSST dataset. || `Annual SST ERv5SST` | Annual sea surface temperature from ERSST version 5. || `DHW` | Degree Heating Weeks, a cumulative thermal stress metric commonly used for coral bleaching risk. || `Year_zeax` | Year corresponding to the zeaxanthin record. || `Zeaxanthin (µg/g)` | Zeaxanthin concentration in micrograms per gram, likely from sediment or environmental samples. || `Fraction Mississippi` | Estimated fractional contribution of Mississippi-derived nitrogen or water mass influence in the WFGB system. || `propagated error` | Propagated uncertainty associated with `Fraction Mississippi` or the associated mixing-model calculation. |