Monthly nutrient and chlorophyll a measurements were collected across Port Phillip Bay for two years. Reported concentrations show ammonium varied between <0.5 and 40 mM, while silicate reached up to 80 mM during high runoff. The data, collected by the Australian Ocean Data Network, distinguishes nutrient sources from the Yarra/Maribyrnong and Werribee rivers.
Use Cases
- Modeling nutrient transport and dispersion based on salinity relationships mentioned in the description.
- Analyzing spatial variability of ammonium, nitrate, phosphate, and silicate concentrations during different runoff conditions.
- Identifying primary nutrient input sources (e.g., Werribee River vs. Yarra River) based on the described nutrient/salinity relationships.
- Studying the link between freshwater runoff, nutrient input, and chlorophyll a biomass abundance.
Strengths
- Data collected via continuous profiling technique with measurements every 10 seconds, resolving features over scales of about 200 meters.
- Surveys cover approximately 2000 km2 of Port Phillip Bay and could be completed in 3 days.
- Compares two distinct environmental periods: high runoff (September 1993) and low runoff (January 1995).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data files are in PDF and HTML formats, which may require extraction for analysis.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Continuous profiling technique with seawater pumped into a mobile laboratory aboard ship, filtered, and measured by flow-segmented colorimetric analysis.
- Time Range
- Monthly intervals over two years, with specific periods reported for September 1993 and January 1995.
- Freshness
- Last updated 2026-05-05 02:01:02.720959; freshness should be verified.
- Geography
- Northern Port Phillip Bay, Victoria, Australia.