lichens In A Sentence
Learn how to use lichens in a sentence and make better sentences with `lichens` by reading lichens sentence examples.
- Environmental modifications and the taxonomy of the crustose lichens.
- Other species that can tolerate the acidic soils of the taiga are lichens and mosses, yellow nutsedge and water horsetail.
- They mainly eat lichens in winter, especially reindeer moss. However, they also eat the leaves of willows and birches, as well as sedges and grasses.
- Peysonellia squamaria, Melobesia lichenoides, Leathesia difformis are forms which are not attached throughout but grow in plates like the foliaceous lichens.
- The holdings include 250.000 specimens of ferns and spermatophytes, 30.000 algae, 17.000 moss, and 8.000 lichens.
- Dyes included woad for blue and less frequently madder and lichens for reds and purples.
- Today studies in lichenology are not restricted to the description and taxonomy of lichens but have application in various scientific fields.
- The life of many lichens thus consists of alternating periods of activity when moisture is plentiful, and completely suspended animation under conditions of dryness.
- Lichens also sometimes contain structures made from fungal metabolites, for example crustose lichens sometimes have a polysaccharide layer in the cortex.
- Mosses and lichens provide much of the patchy ground cover, forming mats rather than carpets with bare ground between.
- The full list of values for : amphibian, arthropod, bird, bryophyte, fern, forb, graminoid, lichens, mammal, reptile, shrub, tree, and vine.
- There is low but abundant vegetation, consisting of mosses, lichens, liverworts, ferns, grasses, sedges, and crowberry.
- There are no large land animals but bacteria, nematodes, springtails, mites, and midges live on the mosses and lichens.
- When these lichens die their thalli are decomposed to add humus.
- In the two genera of lichens - the Basidiolichens - i n which the fungus is a member of the Basidiomycetes, we have the fructification characteristic of that class of fungi: these are dealt with separ
- There are only two species of flowering plant, Antarctic hair grass and Antarctic pearlwort, but a range of mosses, liverworts, lichens and macrofungi.
- It is a genus of only three currently accepted species, found in Africa . " Xanthomaculina " lichens have an umbilicate growth form.
- A similar relation between oil formation and the nature of the substratum has been observed in many lichens.
- Some people who study lichens ( lichenologists ) group squamulose lichens separately from crustose lichens.
- Daisies, wild asters and lupine, grasses, lichens, hawkweed, goldenrod, thistles and birdfoot violets.
- Lichen fungi are usually ascomycetes although the other two higher fungi are sometimes found in lichens.
- Byssoid lichens are of two types, those where the cottony structure is dominated by photobiont filaments ( e . g ., " coccoid photobionts among them.
- He studied how cryptogam communities ( lichens and bryophytes ) change with differing forest composition.
- There are dried-out channels of the bog which are colonised by algae, deergrass, " Scirpus cespitosus " and lichens.
- Lichens are found growing in various situations such as bare earth, the bark of trees, dead wood, the surface of stones and rocks, where they have little competition to fear from ordinary plants.
- Dr . Irwin M . Brodo, lichenologist emeritus at the Canadian Museum of Nature, who wrote most of the text, has studied lichens for more than 40 years.
- For example, three species of land snails in the genus " Euchondrus " in the Negev desert are noted for eating lichens growing under the surface limestone rocks and slabs ( endolithic lichens ).
- Foliose lichens have an upper cortex on the top side of the " leaf ", and a separate lower cortex on the bottom side.
- It is particularly associated with forests rich in moss and lichens.
- With these investigations the number of antibacterial substances and possible drug targets known to be produced by lichens increased ergosterol, usnic acid etc.
- If the air is clean, shrubby, hairy and leafy lichens become abundant.
- Mosses are commonly confused with lichens, diploid sporophyte generation is dominant.
- He was the author of treatises on lichens, fungi, teratology in plants, Darwinism and on the botanical genus " Rubus ".
- These cyanobacteria are generally more rich in nitrogen-fixing cells called heterocysts than those cyanobacteria which may live in the main thalli of lichens.
- The " lichens " authors would certainly, happily relate.
- This is especially the case in the lichens (symbiotic organisms composed of a fungal mycelium in association with algal cells), which are usually exposed to very severe fluctuations in external condit
- The early colonizers-often algae, cyanobacteria and lichens-stabilize the substrate.
- Many lichens, such as the Verrucariae and Collemaceae, are found in the best condition during the winter months.
- Estuarine lichens (Link) 2 February 2005 On the Adur at mid-tide, two Little Grebes were diving underwater near Cuckoo 's Corner.
- This promotes soil building and the environment becomes suitable for growth of foliose and fruticose type of lichens.
- In 1896 he returned to Germany with an extensive collection of mosses, lichens, ferns and phanerogams.
- Throughout the garden a rich patina of moss, lichens ferns and saxifrages gives a sub-tropical feel to the whole area.
- The trees on this bog were bonsai-like black spruce, red maple, and occasional scrawny larch covered with lichens.
- Usnic acid is the most commonly studied metabolite produced by lichens and has been associated with the suppression of tuberculosis.
- Sometimes lichens contain structures made from fungal metabolites, for example crustose lichens sometimes have a polysaccharide layer in the cortex.
- (a) With respect to corticolous lichens, some prefer the rugged bark of old trees (e.g.
- Funf stuck gives ten free living algae which have been identified as the gonidia of lichens.
- In the field of lichenology, he conducted anatomical and developmental studies on the thallus of lichens.
- Many thousands of microfungal species occur in lichens, forming symbiotic relationships with algae.
- Overall, about 100 species are known to occur as autotrophs in lichens.
- He sent a significant collection of lichens from Egglestone to Smith.
- These lichens have cheerier associations as well.
- Alexander, R.W. and Calvo, A. The influence of lichens on slope processes in some Spanish badlands.
- I have a fascination with lichens and have studied them a lot.
- Of great historical and commercial significance are lichens belonging to the family Roccellaceae, commonly called orchella weed or orchil.
- Some exist for ferns, but mosses and lichens have been ignored.
- Pleurococcus (Cystococcus) humicola in the majority of lichens, e.g.
- Many of the dyes are made from lichens, the useful ones for this purpose being known as crottle.
- The outcroppings have additional interest because club mosses and lichens can be found on their surfaces.
- Moss campion, scurvy grass, sea mayweed and lichens on the rocky foreshore.
- In crustose areolate lichens, the edges of the areolas peel up from the substrate and appear leafy.
- The underside of the leaf-like lobes of foliose lichens is a different color from the top side ( dorsiventral ), often brown or black, sometimes white.
- Lichens, in botany, compound or dual organisms each consisting of an association of a higher fungus, with a usually unicellular, sometimes filamentous, alga.
- The majority of the lichens, however, possess a stratified thallus in which the gonidia are found as a definite layer or layers embedded in a pseudoparenchymatous mass of fungal hyphae, i.e.
- Since industrialisation many of the shrubby and leafy lichens such as " Ramalina, Usnea " and " Lobaria " species have very limited ranges, often being confined to the parts with the purest air.
- There are over 66 species of lichens in the bog, primarily lignicolous types.
- Competition for space with other lichens stimulates longer stipes to develop, whereby the squamules may overlay other lichens.
- Yes, there are, but the power source for lichens is sunlight, and how does that get inside a rock.
- What a shame the lichens themselves can't appreciate it.
- One of his favorite expeditions was to collect endolithic lichens in Antarctica.
- Fruticose lichens have a single cortex wrapping all the way around the " stems " and " branches ".
- The forest is rich in mosses and lichens, and the protection of the moss " Buxbaumia viridis " is one of the explicit aims of the nature reserve.
- It is a genus of thin crustose lichen of widely varying forms, commonly called "'comma lichens " '.
- Like other lichens it is a symbiosis of a fungus and an alga.
- In numerous lichens, e.g.
- In the December 1977 issue of " Castanea ", Skorepa " et al . " listed 242 species of lichens collected in Maryland.
- These are not the only tar lichens present on the shore and they are difficult to distinguish from each other.
- (2) The tundra or region of intensely cold winters, forbidding tree-growth, where mosses and lichens cover most of the ground when unfrozen, and shrubs occur of species which in other conditions are t
- Bonnier, " Recherches sur la synthbse des lichens," Ann.
- In the arts, as food and as medicine, many lichens have been highly esteemed, though others are not now employed for the same purposes as formerly.
- The old oak trees in the reserve are covered with lichens.
- Patterns in Nature: Mysterious Earth lichens grow on a granite gravestone in Lake Champlain, New York.
- Some crustose lichens have thalli consisting of scattered or loosely grouped granules.
- Like human farmers growing plants, the fungi in lichens cultivate their own photosynthesizing food source, the algae.
- This form of relationship is now known in other groups of plants (see Bacteriology and Fungi), but it was first discovered in the lichens.
- Lichens, mosses, ferns and flowering plants find homes on the walls.
- Cladonia perforata, a member of the group lichens, is endangered.
- Their food is entirely vegetable, especially grass roots and stalks, shoots of dwarf birch, reindeer lichens and mosses, in search of which they form, in winter, long galleries through the turf or und
- Foliose lichens may sometimes branch and appear to be fruticose.
- "Clorococcoid " means a green algae ( Chlorophyta ) that has single cells that are globose, which is common in lichens.
- It does not show ascocarps or other reproductive structures, belonging to the group commonly known as the'Fungi or lichens imperfecti'in the UK.
- The presence of " Lobaria " species, along with certain other lichens, has been used as part of an index of forest continuity and habitat quality in Britain.
- All of St . Matthew Island lies under the management control of the Alaska Maritime National Wildlife Refuge, an area of significant phytogeographic interest for its diverse lichens.
- The oldest fossil lichens in which both symbiotic partners have been recovered date to the Early Devonian Rhynie chert, about 400 million years old . and " Prototaxites " were lichenized.
- The fungi form lichens in a photosynthetic partners which may be a cyanobacterium such as " Nostoc " or a green alga such as " Coccomyxa ".
- Orcinol, a natural phenolic organic compound, occurs in many species of lichens including " R . tinctoria ".
- Lichens encrust the old, tightly spaced trunks.
- In squamulose lichens the part of the lichen thallus that is not attached to the substrate may also appear leafy.
- Lichens have a main body part called the thallus, which is composed of hyphae, and houses the fruticose.
- Humans have a long history of using lichens for different purposes.
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