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Cindy Luongo Cassidy presents Save the Night! Ecology of Darkness to the 2013 Master Naturalist, Hill Country Chapter training class.
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9/3/13
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Save the Night! The Ecology of Darkness
Presented by Cindy Luongo Cassidy What if we woke up one morning only to realize that all of
the conservation planning of the last thirty years told only half the story – the daytime story? Catherine Rich Founder, The Urban Wildlands Group © C W Luongo 2012
Animals, Plants, & Darkness
• NavigaEon
• ReproducEon
• Daily & Annual Rhythms
• CompeEEon
• PredaEon
Photos courtesy NOAA and NPS
© c luongo cassidy 2013 Photo courtesy Susan RIley
© c luongo cassidy 2012
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© c luongo cassidy 2012 © c luongo cassidy 2012 © c luongo cassidy 2013
© C W Luongo 2012
Do you spend Eme in the unhealthy glow of arEficial light?
© c luongo cassidy 2010 © c luongo cassidy 2012
© c luongo cassidy 2012
© c luongo cassidy 2008 Photo courtesy Steve Irvine
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© C W Luongo 2012
© c luongo cassidy 2012
© c luongo cassidy 2013
© c luongo cassidy 2012 © c luongo cassidy 2012
Outdoor LighEng Challenges
• Glare, Safety and Security
• Light Trespass
• Wasted Money and Energy
• Obscures Our View of the Stars
• Ecological and Health Issues
Glare Kills Visibility Good Visibility = Safety & Security!
Photos courtesy of Cliff Hass.
Safety at Home Light Trespass Demo
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Wasted Energy Have you seen the Milky Way?
Photos courtesy of Joe Roberts
Light PolluEon SoluEons
• Start with a Good Fixture
• Aim Lights Down
• Shield Every Light
• Reduce the Amount of Light
• Turn it Off
It’s not just the Light Fixture
• Lumens MaZer
• Timers, MoEon Detectors, & Half
Night Photocells
• InstallaEon MaZers
Aim Lights Down
Full Cutoff & Fully Shielding the Light Source
© c luongo cassidy 2012
Low Mounted Full Cutoff Light
© c luongo cassidy 2012
Shielding to Reduce WaZage!
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Photo by Lauren Cook
Turn the Lights Off When You’re Not There to Use Them