Dimethylsulfoniopropionate-derived compound concentrations, volatile organic compound concentrations, nutrient and organic matter concentrations, microorganism abundances and activity, and bromoperoxidase activity along a transect from the tropical ocean into the coral back reef lagoon of Moorea (French Polynesia). Production and loss rates of volatile organic compounds by photochemistry, microbial plankton, Turbinaria ornata, carbonate sediment, and ventilation to the atmosphere in the back-reef lagoon.

These data belong in the paper: Marta Masdeu-Navarro, Miguel Cabrera-Brufau, Lei Xue, Pablo Rodríguez-Ros, Stephanie G. Gardner, Kristin Bergauer, Kevin M. Posman, Stephen D. Archer, Gerhard J. Herndl, Celia Marrasé, David J. Kieber, Rafel Simó. The seascape of VOC production ans cycling in a tropical coral reef. Elementa -Science of the Anthropocene, in press (2025). File 1: Concentrations of DMSP, DMS, DMDS, COS, CS2, isoprene, CH3I, CH2ClI, CH2Br2 and CHBr3, DOC, DON, FDOM, POC, PON, nutrients, chla, bacteria and sized phytoplankton abundances, phytoplankton group biomasses, bacterial activity, and bromoperoxidase activity in seawater samples along a transect of 6 sampling sites from the open ocean into and across the northern coral reef of Mo'orea, French Polynesia. The sampling sites along the transect were visited 4-5 times in April 2018. All samples are surface seawater (20 cm approx). Included are two short distance gradients of volatile compounds between the very proximity of a coral Pocillopora sp. and the water 2 m away, as well as between a raft of decomposing seaweeds and 2 m away. File 2: Rates of net production (positive values) or net loss (negative values) of DMS, DMDS, COS, CS2, isoprene, CH3I, CH2ClI, CH2Br2 and CHBr3 in the back-reef lagoon of the northern reef of Mo'orea (French Polynesia) caused by several reef components and processes: seawater photochemistry, microbial plankton, the dominant seaweed Turbinaria ornata, bare carbonate sediments, ans air-sea exchange (ventilation). All rates were determined from bottle incubations, with corrections to in situ conditions between 10:00 and 14:00 local time, and the transit time of the water across the lagoon. Methodological details of sampling, analyses, process-oriented incubations and calculations are provided in the paper.