Data

Macquarie Island lake water chemistry survey data, 2017-2018

Australian Antarctic Division

Saunders, K.M., Meredith, K. and McDonough, L. ; SAUNDERS, KRYSTYNA MAGDALENA ; MEREDITH, KARINA ; MCDONOUGH, LIZA

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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26179/vt61-zd43&rft.title=Macquarie Island lake water chemistry survey data, 2017-2018&rft.identifier=10.26179/vt61-zd43&rft.publisher=Australian Antarctic Data Centre&rft.description=This data set is based on the in-field measurements and collection of water samples from 40 lakes on the Macquarie Island plateau.Samples were analysed at the Australian Nuclear Science and Technology Organisation (ANSTO).Isotopic and hydrochemical data from lakes provide direct information on catchment response to changing rainfall, evaporation, nutrient cycling, and the health of ecosystems. These techniques have not been widely applied to lakes in the Southern Hemisphere high latitudes, including Southern Ocean Islands (SOIs) experiencing rapid, significant shifts in climate. Historical work has highlighted the localised nature of geochemical drivers in controlling the hydrochemical evolution of lakes, such as geology, sea spray contribution, vegetation, geographical location, and ice cover extent. The role of groundwater in lake hydrology and hydrochemistry has not been identified until now, and its omission will have major implications for interpreting soil–water–air processes affecting lakes. Here we present the first comprehensive, island-wide hydrochemical and isotopic survey of lakes on a SOI. Forty lakes were examined across Macquarie Island, using comparable methods to identify key environmental processes and their geochemical drivers. Methods include stable carbon (δ13CDOC: dissolved organic carbon and δ13CDIC: dissolved inorganic carbon), oxygen (δ18O), hydrogen (δ2H) and strontium isotopic ratios (87Sr/86Sr) in water. These provide essential baseline data for hydrological, biological, and geochemical lake processes. Lakes on the western side of the island are influenced by sea spray aerosols. In general, it was found that lakes at higher elevations are dilute and those located in lower elevation catchments have experienced more water–rock interactions. The hydrochemical and isotopic tracers suggest that lakes in lower elevations contain more terrestrial sourced ions that may be contributed from groundwater. Increasing temperatures and changing rainfall patterns predicted for the region will lead to shifts in nutrient cycles, and impact the island’s unique ecosystems. Future research will focus on long-term monitoring to understand seasonal, annual, and long-term variability to test fundamental hypotheses concerning ecosystem function and the consequences of environmental change on SOIs.Details are in Meredith et al. 2022 https://doi.org/10.1038/s41598-022-25115-3Spreadsheet details1. Notes – information about water chemistry sampling and description of each spreadsheet2. Lake_field_parameters – lake codes, names, locations, in-field measurements made3. Lake_water_chemistry – water chemistry analysesProgress Code: completed&rft.creator=Saunders, K.M., Meredith, K. and McDonough, L. &rft.creator=SAUNDERS, KRYSTYNA MAGDALENA &rft.creator=MEREDITH, KARINA &rft.creator=MCDONOUGH, LIZA &rft.date=2023&rft.coverage=westlimit=158.75793; southlimit=-54.78168; eastlimit=158.95294; northlimit=-54.48759&rft.coverage=westlimit=158.75793; southlimit=-54.78168; eastlimit=158.95294; northlimit=-54.48759&rft.coverage=uplimit=314; downlimit=9&rft.coverage=uplimit=314; downlimit=9&rft_rights=These data are publicly available for download from the provided URL.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&rft_rights=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_4156_Macquarie_Island_water_chemistry when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=inlandWaters&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER BUDGET > HYDROLOGIC REGIME&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ISOTOPES > STABLE ISOTOPES&rft_subject=EARTH SCIENCE > CLIMATE INDICATORS > TERRESTRIAL HYDROSPHERE INDICATORS&rft_subject=EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > OCEAN/LAKE RECORDS > ISOTOPES&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ISOTOPES&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ISOTOPES > RADIOISOTOPES&rft_subject=EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND&rft_subject=EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS&rft_subject=EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > STABLE ISOTOPES&rft_subject=AUSTRALIAN NUCLEAR SCIENCE AND TECHNOLOGY ORGANISATION&rft_subject=ANSTO&rft_subject=4156&rft_subject=AAS 4156&rft_subject=CONDUCTIVITY METERS > CONDUCTIVITY METERS&rft_subject=OXYGEN METERS > OXYGEN METERS&rft_subject=TEMPERATURE PROBES > TEMPERATURE PROBES&rft_subject=PH METERS > PH METERS&rft_subject=ICP-MS > Inductively Coupled Plasma Mass Spectrometer&rft_subject=ICP-AES > Inductively Coupled Plasma Atomic Emission Spectrometer&rft_subject=ION CHROMATOGRAPHS > ION CHROMATOGRAPHS&rft_subject=FIELD SURVEYS > FIELD SURVEYS&rft_subject=LABORATORY > LABORATORY&rft_subject=CEOS&rft_subject=AMD/AU&rft_subject=AMD&rft_subject=OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND&rft_subject=GEOGRAPHIC REGION > POLAR&rft.type=dataset&rft.language=English Access the data

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Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/by/4.0/legalcode

These data are publicly available for download from the provided URL.

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_4156_Macquarie_Island_water_chemistry when using these data.

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Full description

This data set is based on the in-field measurements and collection of water samples from 40 lakes on the Macquarie Island plateau.

Samples were analysed at the Australian Nuclear Science and Technology Organisation (ANSTO).

Isotopic and hydrochemical data from lakes provide direct information on catchment response to changing rainfall, evaporation, nutrient cycling, and the health of ecosystems. These techniques have not been widely applied to lakes in the Southern Hemisphere high latitudes, including Southern Ocean Islands (SOIs) experiencing rapid, significant shifts in climate. Historical work has highlighted the localised nature of geochemical drivers in controlling the hydrochemical evolution of lakes, such as geology, sea spray contribution, vegetation, geographical location, and ice cover extent. The role of groundwater in lake hydrology and hydrochemistry has not been identified until now, and its omission will have major implications for interpreting soil–water–air processes affecting lakes. Here we present the first comprehensive, island-wide hydrochemical and isotopic survey of lakes on a SOI. Forty lakes were examined across Macquarie Island, using comparable methods to identify key environmental processes and their geochemical drivers. Methods include stable carbon (δ13CDOC: dissolved organic carbon and δ13CDIC: dissolved inorganic carbon), oxygen (δ18O), hydrogen (δ2H) and strontium isotopic ratios (87Sr/86Sr) in water. These provide essential baseline data for hydrological, biological, and geochemical lake processes. Lakes on the western side of the island are influenced by sea spray aerosols. In general, it was found that lakes at higher elevations are dilute and those located in lower elevation catchments have experienced more water–rock interactions. The hydrochemical and isotopic tracers suggest that lakes in lower elevations contain more terrestrial sourced ions that may be contributed from groundwater. Increasing temperatures and changing rainfall patterns predicted for the region will lead to shifts in nutrient cycles, and impact the island’s unique ecosystems. Future research will focus on long-term monitoring to understand seasonal, annual, and long-term variability to test fundamental hypotheses concerning ecosystem function and the consequences of environmental change on SOIs.

Details are in Meredith et al. 2022 https://doi.org/10.1038/s41598-022-25115-3

Spreadsheet details
1.    Notes – information about water chemistry sampling and description of each spreadsheet
2.    Lake_field_parameters – lake codes, names, locations, in-field measurements made
3.    Lake_water_chemistry – water chemistry analyses

Lineage

Progress Code: completed

Notes

Purpose
The purpose of this dataset was to characterise the hydrogeochemical processes in lakes on Macquarie Island.

Data time period: 2017-12-01 to 2022-12-01

This dataset is part of a larger collection

Click to explore relationships graph

text: westlimit=158.75793; southlimit=-54.78168; eastlimit=158.95294; northlimit=-54.48759

text: uplimit=314; downlimit=9

Subjects

4156 | AAS 4156 | AMD | AMD/AU | ANSTO | AUSTRALIAN NUCLEAR SCIENCE AND TECHNOLOGY ORGANISATION | CEOS | CONDUCTIVITY METERS > CONDUCTIVITY METERS | EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > STABLE ISOTOPES | EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > FRESHWATER ECOSYSTEMS > LAKE/POND | EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > OCEAN/LAKE RECORDS > ISOTOPES | EARTH SCIENCE > CLIMATE INDICATORS > TERRESTRIAL HYDROSPHERE INDICATORS | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER FEATURES > LAKES/RESERVOIRS | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER BUDGET > HYDROLOGIC REGIME | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ISOTOPES | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ISOTOPES > RADIOISOTOPES | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ISOTOPES > STABLE ISOTOPES | FIELD SURVEYS > FIELD SURVEYS | GEOGRAPHIC REGION > POLAR | ICP-AES > Inductively Coupled Plasma Atomic Emission Spectrometer | ICP-MS > Inductively Coupled Plasma Mass Spectrometer | ION CHROMATOGRAPHS > ION CHROMATOGRAPHS | LABORATORY > LABORATORY | OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND | OXYGEN METERS > OXYGEN METERS | PH METERS > PH METERS | TEMPERATURE PROBES > TEMPERATURE PROBES | inlandWaters |