Article 1 Gulf of Mexico 1 Hydrocarbon degradation 1 Marine oil snow 1 Microbial aggregate 1 RNA 16S 1 bacterial aggregate biogeochemical cycling 1 carbon 14 1 catalysis 1 coastal waters 1 community structure 1 controlled study 1 discriminant analysis 1 dispersant 1 fluorescence in situ hybridization 1 gene sequence 1 hexadecane 1 hydrocarbon 1 marine bacterium 1 marine environment 1 metagenomics 1 microbial community 1 microbial degradation 1 mineralization 1 naphthalene 1 nonhuman 1 oil 1 oil spill 1 oxidation 1