sustainable penrith indicators

Sustainability Indicators
 

Principle 3:

Recognise the intrinsic value of biodiversity and natural ecosystems, and protect and restore them

Objective:

Our natural habitats are healthy

Indicator PC6:

The river and creeks are healthy


2006/2007 Data

Why use this indicator?

Macroinvertebrates are small creatures that live in the bottom of streams, estuaries and wetlands and include insects, mites, shrimp and crayfish. These organisms provide a good indication of the ecological health of waterways as the pollution tolerances of the different macroinvertebrate families vary. Assemblages of macroinvertebrates are used to gauge general water quality condition depending upon species numbers and distribution.

What is the current situation?

Macroinvertebrate sampling in 2007-2008 confirms that all sample sites within the City remain in the range of highly disturbed waters.

Overall, water health at the test sites has remained static. The 2008 report indicates that in general the total number of taxa (or richness) was greater in the 2008 survey compared to the 2006 survey, and that total number of individuals (abundance) of macroinvertebrate was generally smaller in the 2008 survey compared to the survey in 2006.

Council is undertaking a range of programs and initiatives to address pollution sources including on-site sewage management program, environmental auditing of businesses, water quality health monitoring, recreational water quality monitoring, stormwater management programs, creek restoration projects, stormwater policy initiatives and a range of targeted education programs.

What is the desired trend?

An increase in the SIGNAL value within the mild to clean water range at all sites. This will require an increase in the types and number of macro-invertebrates found in local streams and rivers.

What does this mean for the Sustainability of Penrith City?

An increase in type and number of macroinvertebrate will be indicative of an improvement in water quality. Improvement in water quality will have both social and economic benefits for residents in terms of recreational and business opportunities.


2007 - 2008 Response - Stable


 

 

Status Legend

 

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