bugs around light at night

Light pollution is key ‘bringer of insect apocalypse’

Damian Carrington
November 22, 2019
The Guardian

Exclusive: scientists say bug deaths can be cut by switching off unnecessary lights

Light pollution is a significant but overlooked driver of the rapid decline of insect populations, according to the most comprehensive review of the scientific evidence to date.

https://www.theguardian.com/environment/2019/nov/22/light-pollution-insect-apocalypse

Click here to read the article.

Photo by Caio Resende from Pexels

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Designing the New I Street Bridge: Lighting Matters

New concept drawings for the replacement I Street bridge are now out for the public to see.

ECOS hopes the new bridge and the redesigned old bridge will both be lit in ways that is the least damaging to local ecosystems, like the Chinook Salmon that depend on the American River to survive as a species.Click here to learn more about light pollution effects on wildlife and ecosystems.

Click here to see some of the proposed bridge designs.

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Light Pollution Effects on Wildlife and Ecosystems

Source: International Dark-Sky Association

For billions of years, all life has relied on Earth’s predictable rhythm of day and night. It’s encoded in the DNA of all plants and animals. Humans have radically disrupted this cycle by lighting up the night.

Plants and animals depend on Earth’s daily cycle of light and dark rhythm to govern life-sustaining behaviors such as reproduction, nourishment, sleep and protection from predators.

Scientific evidence suggests that artificial light at night has negative and deadly effects on many creatures including amphibians, birds, mammals, insects and plants.

Artificial Lights Disrupt the World’s Ecosystems

Nocturnal animals sleep during the day and are active at night. Light pollution radically alters their nighttime environment by turning night into day.

According to research scientist Christopher Kyba, for nocturnal animals, “the introduction of artificial light probably represents the most drastic change human beings have made to their environment.”

“Predators use light to hunt, and prey species use darkness as cover,” Kyba explains “Near cities, cloudy skies are now hundreds, or even thousands of times brighter than they were 200 years ago. We are only beginning to learn what a drastic effect this has had on nocturnal ecology.”

Glare from artificial lights can also impact wetland habitats that are home to amphibians such as frogs and toads, whose nighttime croaking is part of the breeding ritual. Artificial lights disrupt this nocturnal activity, interfering with reproduction and reducing populations.

Click here to continue reading this on the International Dark-Sky Association’s website.


Outdoor Lighting Basics

Modern society requires outdoor lighting for a variety of needs, including safety and commerce. IDA recognizes this but advocates that any required lighting be used wisely. To minimize the harmful effects of light pollution, lighting should

  • Only be on when needed
  • Only light the area that needs it
  • Be no brighter than necessary
  • Minimize blue light emissions
  • Be fully shielded (pointing downward)

Learn more at www.darksky.org.

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