Sediment and nutrient sources and sinks in a wet-dry tropical catchment draining to the Great Barrier Reef
| Autor: | J. Shellberg, Andrew Brooks, Michele A. Burford, Jon Olley, C. Howley, John Ronald Spencer |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Geologic Sediments Floodplain Drainage basin 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Freshwater ecosystem Rivers Animals Ecosystem 0105 earth and related environmental sciences Hydrology geography geography.geographical_feature_category Baseflow 010604 marine biology & hydrobiology Australia Sediment Estuary Nutrients Pollution Environmental science Cattle Water quality Sediment transport Environmental Monitoring |
| Zdroj: | Marine pollution bulletin. 165 |
| ISSN: | 1879-3363 |
| Popis: | Many tropical river systems have altered water quality due to human land use, impacting the biodiversity of freshwater and coastal ecosystems. Long-term, catchment-scale monitoring is needed to understand pollutant sources, controls, and trends. This 12-year study monitored baseflow and flood event nutrient and sediment concentrations, and estimated sediment loads across the Normanby Basin in northern Australia. Suspended sediment concentrations and yields were highest in upper catchment areas where cattle grazing occurred on erosion-prone sodic soils. Mid- and lower catchment rivers and floodplains were a sink for sediments and nutrients, trapping around 75% of suspended sediments during events. Clays ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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