1. Australian Antarctic Data Centre
2. Discover and Manage Data
3. Records
4. AAS_4633_BEAUT_Terrestrial_Lake_BungerHills_202425

Description

Lakes were sampled in the Bunger Hills as part of the Biodiversity of East Antarctica: Underwater and Terrestrial (BEAUT) field program in 2024/2025. For each lake, a series of samples were collected including water (for chemistry) and sediment (for physical parameters, invertebrate eDNA and extraction). A total of 44 lakes were sampled. This dataset includes the lake water chemistry results.

For water chemistry sampling, three bottles were used to collect water samples from each lake. Bottles were sourced from Australian Laboratory Services (ALS).
• Bottle 1: Nutrients – 60 mL plastic bottle (ALS #010), sulfuric acid (0.6 mL) pre-dispensed
• Bottle 2: TOC - 40 mL amber glass vial, sulfuric acid (0.4 mL) pre-dispensed
• Bottle 3: Major ions - 250 mL plastic bottle (#007), unpreserved (ambient)
Access to liquid water was gained using an ice axe if lake was frozen. Bottle 3 was rinsed in lake water and used to fill bottles 1 and 2 to appropriate volume, being careful not to overfill in case of freezing and expansion during transport. Samples were preserved with pre-dispensed acid (if appropriate) and stored ambient at camp.

Samples were sent to ALS for analysis of the following parameters: electrical conductivity, bicarbonate, carbonate, total alkalinity, sulfate, chloride, calcium, magnesium, potassium, sodium, ammonia, nitrite, nitrate, total N, TP, reactive phosphorus, ionic balance, total anions, total cations, TOC.

Purpose

To understand lake water chemistry across the Bunger Hills region as a driver of biodiversity.

Quality

The data is of good analytical quality.

Access

These data are not yet publicly available for download from the provided URL.

Temporal Coverages

• Start date: 2024-12-01 - Stop date: 2025-01-31

Spatial Coverages

Science Keywords

• EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS > PHOSPHOROUS
• EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND
• EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > WATER CHARACTERISTICS > CONDUCTIVITY
• EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS > INORGANIC MATTER
• EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS > ORGANIC MATTER
• EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS
• EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS
• EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND
• EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS > NITROGEN
• EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > LAKE ICE

Use Constraints

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4633_BEAUT_Terrestrial_Lake_BungerHills_202425 when using these data.