NASA Earthdata hosts a dataset from SCIOPS on nutrient uptake experiments for microbial mats from Bratina Island ponds on the McMurdo Ice Shelf. Mat cores were incubated in pond water spiked with nitrate or phosphate, with water samples withdrawn at specific time intervals. The dataset was last updated in January 2001.
Use Cases
- Modeling nutrient uptake rates over time using incubation duration and nutrient concentration data.
- Comparing nitrate versus phosphate uptake dynamics across different pond samples (Skua, Duet, P70).
- Analyzing temporal patterns in nutrient depletion from water samples taken at 1, 3, 6, 12, and 24-hour intervals.
Strengths
- Experimental data includes controlled incubations with specific nutrient spikes (50 µg l-1 nitrate or phosphate).
- Sampling design provides temporal resolution with measurements at five distinct time points.
Limitations
- Dataset is temporally stale, with last update in 2001, potentially limiting relevance to current models.
- Specific sample size (number of mat cores, rows of data) and geographic scope beyond three named ponds are unknown.
Provenance
- Source
- SCIOPS via NASA Earthdata.
- Collection Method
- Mat cores incubated in spiked pond water, with filtered water samples analyzed for nutrient concentrations.
- Time Range
- null
- Freshness
- Last updated 2001-01-23.
- Geography
- Bratina Island ponds, McMurdo Ice Shelf, Antarctica.