Zooplankton stable isotope data collected during NRDA Plankton Survey Walton Smith 4 (WS4) in the northern Gulf of Mexico from 2011-04-20 to 2011-05-27 on board the R/V F.G. Walton Smith Cruise WS1107

This dataset contains stable isotope data from zooplankton samples collected on board the R/V F.G. Walton Smith during Natural Resource Damage Assessment (NRDA) Plankton Survey Walton Smith 4 (WS4) in the northern Gulf of Mexico from 2011-04-20 to 2011-05-27. This survey (WS4, chief scientist: Malinda Sutor) was part of a series of NRDA cruises conducted in 2010 and 2011 to evaluate the distribution and densities of ichthyoplankton and other zooplankton in Gulf of Mexico waters potentially affected by the Deepwater Horizon Oil Spill (DWHOS) and in surrounding areas. The dataset includes data for zooplankton aliquots (field sample id, wet weight, dry weight, stable carbon and nitrogen values). Samples were analyzed for stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) using a Thermo Delta V stable isotope ratio mass spectrometer coupled to a Costech 4010 elemental analyzer by a Thermo Confo IV continuous flow interface. Isotopic values were calculated relative to conventional standards for each element of interest and expressed in standard delta (δ) notation. Corresponding cruise data for the zooplankton specimens in this dataset can be found in the following GRIIDC Unique Dataset Identifiers (UDIs): R6.x815.000:0006 (doi: 10.7266/n7-9vcj-nf90; MOCNESS instrument data), R6.x815.000:0010 (doi: 10.7266/n7-dp76-tz89; Ichthyoplankton data), R6.x815.000:0012 (doi: 10.7266/n7-fhn0-k550; Larval fish diet and stable isotope data), R6.x815.000:0021 (doi: 10.7266/n7-9kwb-eh85; Zooplankton abundance data), and R6.x815.000:0022 (doi: 10.7266/n7-q8s5-b255; Zooplankton imagery data).