environmental indicators Quotes

In the rich world, the environmental situation has improved dramatically. In the United States, the most important environmental indicator, particulate air pollution, has been cut by more than half since 1955, rivers and coastal waters have dramatically improved, and forests are increasing.

Information is not just something you download from the Web. The way trees grow and where birds choose to live are much better signs of water quality than all the data being collected by the EPA.

Consider the Lichen. Lichens are just about the hardiest visible organisms on Earth, but the least ambitious.

And when you look along the way we've come, there are spirals of vultures wheeling.

If the salmon and steelhead are running, then as far as I am concerned, God knows that all is well in His worldthe health of the environment is good if the salmon and steelhead are around. It is that simple.

Birds are indicators of the environment. If they are in trouble, we know we'll soon be in trouble.

Biologists have determined brookies to be indicators of ecosystem health and have been recently campaigning to get the word out. If brookies inhabit a stream, the odds are good that the waterway is in excellent condition.

There are a lot of signs. One of the things that makes me most nervous is the disappearance of the frogs. They're going downhill all over the planet. Frogs are susceptible to all kinds of problems, because they require water to breed and their skin is very porous. Their condition is nerve racking.