LIGHTING IMPACT ASSESSMENTS

LIGHT ASSESSMENT AND LIGHTING DSEIGN GUIDANCE SPECIFIC TO THE SPECIES OF CONCERN

 

 

Directly visible light sources and sky glow may impact the behaviour of wildlife in different ways, and the impact can be different per species .  Turtles may be deterred from nesting on lit beaches and sky glow may disorientate turtle hatchlings trying to reach the water.  Migratory sea birds may avoid areas of sky glow, extending their flight path and reducing their chance of reaching the destination.  Lighting impact assessments requires understanding of how fauna are impacted and the technical limitations of equipment available.

 

The methodologies used by WAVES can be specific to humans or to the species of concern, and are built upon years of experience in measurement and research.  Our understanding of vision and light combined with current best practice lighting design principles allow us to assess the impact of the light and provide design guidance.

 

WAVES engages Ecologists to identify the species which would be impacted by light in an area.  WAVES assess the impact of light on the species identified, undertake measurements of light colour, luminous intensity, illumination or sky glow as required, and can provide lighting design guidance for the area.

 

We can assess the light levels to current Planning Scheme requirements or design a testing or monitoring methodology fit for the purpose.

 

WAVES have worked on projects involving sea turtle sensitive areas and have undertaken Artificial Light at Night (ALAN) Surveys and Light Audits to see the change in sky brightness over years and at different locations, and have identified the sources causing the most problems.  The results of our investigations provided scientifically justified guidance for lighting design in the area, and will be incorporated into the Planning Scheme.

 

Images from Sea Turtle Sensitive Area project:

1) Full Hemisphere sky glow photo

2) Circular photo converted to rectangular image, and

3) Image data converted to sky brightness (luminance. cd/m² or visual magnitude, mag/arcsec²)

 

Assessment and quantification of sky brightness is useful for monitoring the stability in sky brightness over time and may allow the impact of developments to be assessed.

 

Contact us to discuss your project and area of concern now.