Fascinating Insights into Lichens: Algae, Fungi, and Ecological Succession
In the world of lichens, a unique symbiotic relationship between algae and fungi thrives, showcasing the wonders of mutualism. Through photosynthesis, algae produce glucose and oxygen, while fungi provide stability and protection on rocks. This partnership plays a crucial role in primary succession, paving the way for the formation of soil and nurturing various plant and animal life. Lichens also act as bioindicators, reflecting the impact of air pollution on their environment. Witness the captivating journey of lichens from pioneer species to the establishment of a vibrant forest ecosystem.
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Warm-up: Write two new things you have learned about lichens. Lichen cartoon, DevonMiddleSchool (2:06) http://www.youtube.com/watch?v=j6UFRIAcWgY Ecological Succession of Climax Forest, Buck&SonsLandscaping (6:22) https://www.youtube.com/watch?v=k03vxRYsJ4Y Lichens, Millie Davenport https://youtu.be/KEjpGwfEJl0 Lichen Diversity https://youtu.be/YHBcW7Qhhpc
Lichen = algae & fungi, or bacteria & fungi; in this example endolithic bacteria & fungi
Lichen cartoons http://www.defendersblog.org/wp-content/uploads/2011/10/lichen-cartoon_BPwm.jpg http://farm9.static.flickr.com/8456/8049059081_ab6169e428_m.jpg
A Day in the Life of a Lichen (cartoon) Primary Succession (pioneer species), Crustose Lichen live on rock Lichen are algae and fungus live together, symbiosis = mutualism Algae produce glucose (sugar) and oxygen through photosynthesis. Fungus produce carbon dioxide and hold onto rock with hyphae and hold water. Fungus hold onto rock with hyphae; protect algae from UV rays Carbonic acid produced breaks up rock Frost wedging, Rain that freezes in cracks in rock , breaks rock Lichen are Bioindicators; die with air pollution Algae die, decompose and add nutrients to broken rock = beginning of soil. Moss and other plants grow, then die, adding nutrients. Deer, caribou, squirrels, mountain goats, birds eat lichen End of process (100 s 1,000 s of years)- forest, Climax Community.
