Abundance, migrant biomass and carbon flux data of micronekton (fishes and crustaceans) from CAPEGOLCA cruises (June-October 2018) in the Gulf of California

The values of carbon flux were determined in juveniles/adults of 3 species of migratory mesopelagic fishes, 2 species of decapods and 2 species of large euphausiids sampled during the CAPEGOLCA XIII and CAPEGOLCA XIV cruises (June-October 2018). This dataset contains the values of numerical abundance, migrant biomass, specific respiration and respiration flux data for each individual analyzed at the north-central regions in the Gulf of California. Specimens were collected during the nighttime (20:00–05:00 h local) using a standard Bongo net (0.61 m mouth diameter, 505 µm mesh net). The integrated layer from maximum depth to surface (32–272 m) was evaluated through oblique hauls for each cruise. Collected specimens were identified on board to the lowest possible taxonomic level and those selected for electron transfer system (ETS) activity analysis were immediately frozen in liquid nitrogen contained for posterior chemical analyses in the land-based laboratory. Values of abundance, migrant biomass, specific respiration and respiration flux were integrated from sampling depth to surface.