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Results of Two Dry-season Surveys of Keppel Bay and Casuarina Creek: Biogeochemical Properties of the Water Column and Underlying Sediments

Created 17/10/2025

Updated 17/10/2025

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The Fitzoy Estuary is one of several macrotidal estuaries in tropical northern Australia that face ecological change due to agricultural activities in their catchments. The biochemical functioning of such macrotidal estuaries is not well understood in Australia, and there is a pressing need to identify sediment, nutrient and agrochemical pathways, sinks and accumulation rates in these extremely dynamic environments. This is particularly the case in coastal northern Queensland because the impact of water quality changes in rivers resulting from vegetation clearing, changes in land-use and modern agricultural practices are the single greatest threat to the Great Barrier Reef Marine Park. This report includes: 1 Aims and Research questions 2 Study Area 3 Climate and Hydrology 4 Geology 5 Vegetation and land use 6 Methods 7 Sampling strategy 8 Water column observations and samples 9 Bottom sediment properties 10 Core and bottle incubations 11 Data analysis 12 Results 13 Discussion 14 The roll of Keppel Bay in accumulating and redirecting sediment and nutrients from the catchment 15 Sediment biogeochemistry 16 Links between primary production, biogeochemistry and sediment dynamics: A preliminary zonation for Keppel Bay 17 Conclusions

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Field Value
Title Results of Two Dry-season Surveys of Keppel Bay and Casuarina Creek: Biogeochemical Properties of the Water Column and Underlying Sediments
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/796dc09d-9fbb-4b80-bb22-fd9d7c2bb44e
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Results of Two Dry-season Surveys of Keppel Bay and Casuarina Creek: Biogeochemical Properties of the Water Column and Underlying Sediments". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/results-of-two-dry-season-surveys-of-keppel-bay-and-casuarina-creek-biogeochemical-properties-o1