What is Turtle-Friendly Lighting?
Phil: Turtle-friendly lighting is defined by specific parameters set by the Florida Fish and Wildlife Conservation Commission (FWC), which specify the use of true amber-emitting diodes and limited wavelength amber LED lighting. Phosphor-coated amber is typically not permitted due to differences in lumen output and sustainability. These strict guidelines ensure that the lighting does not interfere with the natural behaviors of turtles, particularly during nesting and hatching periods.
Andrew: The concept originated from research by the FWC. It has since expanded to be more broadly termed as wildlife-friendly lighting, as it affects not only turtles but also migratory birds and other species. Research indicates that artificial lighting impacts various wildlife, leading to the need for specific lighting solutions. This shift reflects a growing awareness of the broader ecological impacts of artificial lighting.
What Types of Wildlife are Impacted by Blue Light?
Phil: The FWC has identified specific areas as wildlife-sensitive, mandating the use of appropriate lighting to protect various species, including turtles. These areas are designated based on the presence of sensitive wildlife and the need to minimize disruption caused by artificial lighting.
How Does True Amber LED Lighting Work?
Phil: True amber LED lighting operates at a specific wavelength (around 550 nanometers) that does not attract turtles. This wavelength is crucial for preventing hatchlings from being misled by artificial lights. True amber lighting also involves high levels of shielding to minimize reflection and attraction. This ensures that turtles are guided by natural moonlight rather than artificial sources.
Andrew: True amber LEDs are preferred over phosphor-coated LEDs because phosphor coatings can degrade over time. True amber LEDs provide a narrow wavelength range that is less visible to wildlife, making them more effective for wildlife-friendly applications. This stability and reliability make true amber LEDs a sustainable choice for long-term wildlife protection.
How Do Amber and Full Cut-Off Illumination Preserve the Night Sky?
Phil: Amber light, particularly true amber LED lighting, operates at a wavelength that minimizes skyglow, which is the brightening of the night sky caused by artificial lighting. This type of lighting reduces the amount of blue light emitted, which is a major contributor to light pollution. Full cutoff fixtures are designed to direct light downward, preventing it from spilling into the sky and surrounding areas. As a result, the combination helps preserve the natural darkness and clarity of our night sky.
Andrew: The use of amber light and full cutoff fixtures is crucial for maintaining dark skies, especially in areas near observatories and natural parks. Amber light reduces the impact on nocturnal wildlife and minimizes the disruption of natural behaviors. Full cutoff fixtures ensure that light is used efficiently and only where it is needed, reducing unnecessary light pollution. This approach not only benefits wildlife but also enhances the quality of life for humans by preserving the beauty and clarity of the night sky.
How Do You Balance Good Lighting Performance with Amber?
Phil: Balancing performance with true amber lighting can be challenging due to the limited lumen output of true amber LEDs. In some cases, such as state roads, the required lighting levels may not be met, leading to conflicts and the need for compromises. This often requires innovative design solutions to meet both safety standards and wildlife protection goals.
Andrew: It is a balancing act to maintain minimum foot-candle levels for safety while meeting wildlife-friendly requirements. This often involves making compromises and finding innovative solutions to ensure both human and wildlife needs are met. The challenge lies in achieving effective illumination without compromising the ecological integrity of the environment.
What Solutions does Acuity Brands Lighting Offer for Amber Lighting?
Phil: Holophane® and American Electric Lighting® offer several products with true amber options, including the Autobahn, Wallpack, and decorative fixtures like the Taft or Washington. On a project basis, we are able to accommodate custom requests for other products to emit true amber. These products are designed to meet the stringent requirements of wildlife-sensitive areas while also delivering good lighting performance.
Andrew: When it comes to the Cyclone brand, much of the portfolio is customizable to the needs of our customers and their applications. One of the ways we do this is with our Orion LED engine, which can be adapted to true amber for various fixtures. This flexibility allows us to meet specific project needs and provide wildlife-friendly lighting solutions.
Where Do You Expect This Trend to Go in the Future?
Phil: In Florida, the focus is on coastal areas first, with plans to expand to inland areas. The FWC aims to protect wildlife across the state, and this trend is expected to grow as more areas adopt wildlife-sensitive lighting practices. The ongoing research and increasing awareness will likely drive further adoption of these practices.
Andrew: The trend will likely expand beyond coastal areas to include wetlands, mountains, valleys, and deserts. Artificial lighting impacts a wide range of wildlife, and as research continues, more regions will adopt wildlife-friendly lighting solutions. The evolution of lighting technology will also play a role in addressing these concerns, potentially leading to new innovations in wildlife-friendly lighting.
