Tag Archive | Lichens on Tree Bark

Lichens – Litmus for Air Quality

Each spring, the parula warbler constructs nests made of bearded lichen in the mature forests of northern U.S. and southern Canada. This lichen is so important to the nesting success of this bird that when the lichen disappeared because of air pollution in the mid 1900’s, it stressed the populations of this tree top warbler. […]

Lichens – The First Pioneers

One of the most active volcanoes of the world, the Kilauea volcano in Hawaii frequently erupts  with lava flows to the ocean. The lava hardens into new land where forces began to break down the igneous rock into a hospitable place for plants to grow. In addition to the physical forces of weathering, lichens contribute […]