zmk1587
Image Number One
From pictures that I have compared online, I believe that this is foliose lichen. Lichen is considered a symbiont because it is composed of an algal part that performs photosynthesis and nitrogen fixation and a fungus part that provides structural support. They can only grow in temperatures fifty degrees and below and thus go dormant in the warmer spring and summer months. Lichen is also considered to be a good indicator of air quality because of its sensitivity to sulfur dioxide. They tend to be more sensitive than other plants because the get many of their nutrients from the atmosphere as opposed to the soil. Crustose are the most resistant to low air quality but leafier lichens like foliose require higher levels of air quality to grow.
Sources:
www.nps.gov/articles/lichens-and-air-quality.htm
www.uaex.edu/yard-garden/resource-library/plant-week/foli...
Image Number One
From pictures that I have compared online, I believe that this is foliose lichen. Lichen is considered a symbiont because it is composed of an algal part that performs photosynthesis and nitrogen fixation and a fungus part that provides structural support. They can only grow in temperatures fifty degrees and below and thus go dormant in the warmer spring and summer months. Lichen is also considered to be a good indicator of air quality because of its sensitivity to sulfur dioxide. They tend to be more sensitive than other plants because the get many of their nutrients from the atmosphere as opposed to the soil. Crustose are the most resistant to low air quality but leafier lichens like foliose require higher levels of air quality to grow.
Sources:
www.nps.gov/articles/lichens-and-air-quality.htm
www.uaex.edu/yard-garden/resource-library/plant-week/foli...