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[Article Dataset] Combined effects of microplastics and nitrogen on bivalve-mediated biogeochemical cycling.
Summary
This dataset accompanies a study on how microplastics and excess nitrogen together affect biogeochemical processes mediated by the bivalve Macomona liliana. The mesocosm experiment measured nutrient fluxes, sediment properties, fatty acid profiles, and microbial indicators under control, microplastic, nitrogen, and combined-stressor conditions. The data provide resources for understanding how multiple environmental stressors interact to disrupt coastal sediment ecosystem functions.
This dataset accompanies the research article titled “Combined effects of microplastics and nitrogen on bivalve-mediated biogeochemical cycling.” It contains post-exposure metrics from a mesocosm experiment in which deep-dwelling bivalves (Macomona liliana) were exposed to control, microplastic, nitrogen, and multiple-stressor conditions. Measurements include ammonium and oxygen fluxes across the sediment–water interface; fatty acid profiles of bivalve tissue and surficial sediment; porewater ammonium concentrations; sediment loss on ignition; sediment porosity; and sediment chlorophyll-a concentrations. Visual indices of black sediment presence within the sediment column and visible microphytobenthos are also included. For detailed information on the methods used in sampling and analysis, please refer to the Methods section of the paper itself.