Program, Project, or Expedition Name:
Stable isotope of weakfish in the Delaware Bay
Data Link: https://https://doi.org/10.6084/m9.figshare.15103092.v2
| Institution | LMRCSC, DSU |
| Principal Investigator | Stacy Smith | slsmith@desu.edu | 302-359-1359 |
| Funding Agency/Contract # | NOAA, Office of EPP, NA11SEC4810007 |
| Collection Start Date | 7/1/2016 |
| Objectives of Data Collection Effort | Brian Galvez graduate student research. |
| Collection End Date | 9/30/2018 |
| Data Collectors Identifying Numbers | SS1 |
| Ship or Other Platform Name | State of NJ/DSU |
| Geographic Location [Latitude(s)/longitude(s)] | Delaware Bay |
| Units | delta carbon13 and nitrogen 15 |
| Data Parameters | N/A |
| Precision | ±0.12‰ for δ13C ;±0.11‰ for δ15N |
| Observation Methodology | N/A |
| Instrument/Gear Identification of Description | Trawl, zooplankton nets |
| Analysis Methodology | Isotope Ratio Mass Spectrometry |
| Data Processing/ Reduction Methodology | Stable isotope analysis (SIA) was conducted for all size classes of juvenile Weakfish. Weakfish muscle and liver tissues were both analyzed for stable isotopes due to the differential between turnover times. Stable isotope δ values were calculated using the formula: δHX [(Rsample/Rstandard – 1)]*1000. The superscript H is the heavy isotope of the element X and R is the ratio of heavy to light isotope (e.g., 13C/12C) of the sample and the standard, respectively. All samples processed for SIA were dried to a constant weight in an oven for 48 hours at 60°C and ground to a fine powder using a mortar and pestle. |
| Explanations of Data Quality Flags | N/A |
| Citations of Relevant Publications and Grey Literature | Brian Galvez, B. and Smith, S.L., 2018. Weakfish caught in 2017 and 2018 from the Delaware Bay, USA. The GPS coordinates of the sampling stations can be provided on an individual basis. |
