[Stolen from Wild Green Memes for Ecological Fiends x]
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Are lichens not some of gods little creatures
i think lichens are their own gods and rulers honestly
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Trumpet Lichens by fungiphotoholic
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Lichens I saw on my walk yesterday. I would love to know more about lichens.
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gotta love a lil piece of bark carrying a whole bunch of life
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been thinking about lichens a lot again lately....... very happy i share a planet with the lads
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December 2021
waldesgeist
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flickr
Lichens as Biological Fertilizers by Field Museum
Via Flickr:
Lichens have many different roles in ecosystems. One of their most important is to act as biological fertilizers. Nitrogen is one of the essential nutrients, forming part of organic and macromolecules such as amino acids, proteins, nucleic acids (DNA, RNA), and chlorophyll. Nitrogen occurs in the nitrogen cycle in four forms, as free nitrogen (N2) in the atmosphere, as ammonia (NH3), as nitrite (NO2–), and as nitrate (NO3–). Whereas plants are able to incorporate nitrate into their metabolism through a process called assimilation, the other three forms can only be used by different kinds of bacteria. Hence, bacteria are essential to maintain the nitrogen cycle and making plant, animal, and fungal life possible. The most important source of nitrogen is the free nitrogen that makes up 78% of the atmosphere. However, only certain bacteria are capable of using this form of nitrogen and incorporating it into the nitrogen cycle, through the process of fixation. Many of these bacteria form symbioses with plant roots, for example in the bean family (Fabaceae). Another large group are cyanobacteria, and many of these enter symbioses with fungi to form lichens. Cyanobacterial lichens are especially abundant in nutrient-poor environments and hence, with their substantial biomass, act as biological fertilizers, without the negative side effects of industrial nitrates. Some of these lichens are depicted here (from left to right, top to bottom): Sticta, Placopsis (a green algal lichen with additional cyanobacteria in so-called cephalodia), Cora, Leptogium, Lobariella, Erioderma. (c) The Field Museum, Robert Luecking
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