- Title
- Numerical and mass concentrations of microplastic debris collected by manta net; Numerical concentrations of Halobates sericeus adults/juveniles and eggs; zooplankton biomass concentration. Various cruises from 1972 - 2010 (completed).
- Abstract
- Microplastic, Halobates, and zooplankton were collected using a standard manta net tow. Each sample was sorted at 6-12x magnification under a Wild M-5 dissecting microscope, and plastic particles and H. sericeus removed for further analysis. Plastic particles were soaked in deionized water to remove salts, dried at 60°C, and stored in a desiccator. Dry mass was measured on an analytical balance. Particles were then digitally imaged with a Zooscan digital scanner (Gorsky et al. 2010). The total number of particles was measured using NIH ImageJ-based tools in the Zooprocess software, calibrated against manual measurements (Gilfillan et al. 2009, Gorsky et al. 2010). H. sericeus samples were enumerated and classified into 5 categories: juvenile, adult male, adult female, newly molted, and molted exoskeletons. H. sericeus eggs, both those attached to plastic and those that had become detached during the collection process, were also enumerated. Dry mass of zooplankton was obtained from preserved manta tow samples. After fixation in 1.8% formaldehyde for 24 months, samples were split in a Folsom splitter, filtered onto 202 µm Nitex mesh disks and rinsed with isotonic ammonium formate. Filters were dried for 24 hours at 60°C and placed in a vacuum dessicator until weighing. Filters were weighed to the nearest 0.0001 gram on the same analytical balance as the plastic samples. A 20% correction factor was applied in order to compensate for the biomass lost by preservation.
- Keywords
- oceans, pollution, ecosystem ecology, measurements, biomass
- LTER Data System Record
- http://dx.doi.org/10.6073/pasta/aae73c3c7b812db67bb761679e511a8a
- Projects
-
California Current Ecosystem LTER
- Creators
-
Goldstein, Miriam (miriam.goldstein@gmail.com)
- Contact
- CCE LTER Information Manager (ccelter.im@gmail.com)
Data
| table |
MicroplasticNumericalandMassConcentration
Main data table for dataset |
Rows: 235 Columns: 19 |
View / Download |