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eutrophication

Indicator protocols: Turbidity or total suspended solids (TSS) + flow

Suspended particulate matter in aquatic environments: turbidity/total suspended solids.

Human induced turbidity can result from a range of land management practices that increase sediment loads within streams. These include clearing of vegetation (particularly of riparian zones), excessive irrigation, and drainage which can lead to river bed and bank erosion, and increased soil erosion associated with rainfall run-off. While some Australian waters have naturally high turbidity, it remains important to monitor for changes in turbidity in these systems.

Indicator protocols: Total phosphorus + flow leaving a sub-catchment or whole catchment

Nutrients in aquatic environments: phosphorus.

Phosphorus is an essential element required by animals and plants and high levels of phosphorus can be an important contributor to eutrophication – especially in freshwater and estuarine systems. Symptoms of eutrophication may include algal blooms and seagrass decline. Phosphorus in aquatic systems is generally partitioned into particulate (organic and sediment-bound) and dissolved fractions. Dissolved phosphorus (measured as FRP) is found in the form of (more)...

Indicator protocols: Total nitrogen + flow leaving a sub-catchment or whole catchment

Nutrients in aquatic environments: nitrogen

Nitrogen is an essential element required by animals and plants. However, high levels of nitrogen can also be an important contributor to eutrophication - especially in estuarine and marine waterways. Symptoms of eutrophication may include algal blooms and seagrass decline.

Indicator guidelines: nutrient concentrations in the water column and/or sediments

Estuarine, coastal and marine habitat condition

This document presents the recommended monitoring guidelines for collecting, collating and reporting information on nutrient concentrations in the water column and/or sediments for national, state/territory and regional application.