This metadata record represents multiple analyses carried out on sea ice cores in McMurdo Sound.
Analyses include:
- Incorporated Biology from Sub-Ice Platlet Layer (SIPL) Cores, McMurdo Sound
- DNA, eDNA, and RNA Sequencing of Zooplankton, Phytoplankton, Microbial from Sea Ice Cores, McMurdo Sound
- Nitrate, Nitrite, Phosphate, and Silicate Concentration from Sea Ice Core Samples, McMurdo Sound
- Chlorohyll Concentration from Sea Ice Cores, McMurdo Sound
- Ice:water ratio (directly measured from each 25 cm core - described below)
Experimental Design:
- focus to document the various physical and biological differences between "mature" and "immature" sub-ice platelet layers.
- 500 m x 500 m array established of each type of ice ("old" vs. "new")
- Individual cores were collected from a randomised series of locations within each array.
- 12 full, segmented cores from 10 separate locations/sites
- first site at each array cored twice - 5 horizontal meters between cores, and all 25 cm sub-samples within each core were extracted, and the ice:water ratio was directly measured by weighing the separated components. These observations represent the first direct and quantitative measurements of SIPL composition.
- This was done to assess the very-high resolution spatial variability, and to provide reference points for the subsequent lower-resolution subsampling. These high-resolution cores then provided reference points for subsequent cores.
The data from these cores links with the Antarctic Science Platform Project 4 objective to understand platelet ice as a habitat. Specifically, direct association of the physical environment and the incorporated biology will guide an investigation of the ecosystem dependence on the SIPL.
GET DATA: natalie.robinson@vuw.ac.nz
