Title: Fungus
Content:  Although often inconspicuous, fungi occur in every environment on Earth and play very important roles in most ecosystems. Along with bacteria, fungi are the major decomposers in most terrestrial (and some aquatic) ecosystems, and therefore play a critical role in biogeochemical cycles and in many food webs. As decomposers, they play an essential role in nutrient cycling, especially as saprotrophs and symbionts, degrading organic matter to inorganic molecules, which can then re-enter anabolic metabolic pathways in plants or other organisms.
Title: Biology
Content:  Fungi are eukaryotic organisms that digest foods outside of their bodies. They do so through a process called absorptive heterotrophy whereby they would first secrete digestive enzymes that break down large food molecules before absorbing them through their cell membranes. Many fungi are also saprobes as they are able to take in nutrients from dead organic matter and are hence, the principal decomposers in ecological systems. Some fungi are parasites by absorbing nutrients from living hosts while others are mutualists. Fungi, along with two other lineages, choanoflagellates and animals, can be grouped as opisthokonts. A synapomorphy that distinguishes fungi from other two opisthokonts is the presence of chitin in their cell walls. Most fungi are multicellular but some are unicellular such as yeasts, which live in liquid or moist environments and are able to absorb nutrients directly 
Title: Fungus
Content:  as a branch of botany, although it is now known fungi are genetically more closely related to animals than to plants. Abundant worldwide, most fungi are inconspicuous because of the small size of their structures, and their cryptic lifestyles in soil or on dead matter. Fungi include symbionts of plants, animals, or other fungi and also parasites. They may become noticeable when fruiting, either as mushrooms or as molds. Fungi perform an essential role in the decomposition of organic matter and have fundamental roles in nutrient cycling and exchange in the environment. They have long been used as a direct source of human food, in the 
Title: Fungus
Content:  larvae consume and depend on fungus transferred from old to new nests. Termites on the African savannah are also known to cultivate fungi, and yeasts of the genera Candida and Lachancea inhabit the gut of a wide range of insects, including neuropterans, beetles, and cockroaches; it is not known whether these fungi benefit their hosts. Fungi growing in dead wood are essential for xylophagous insects (e.g. woodboring beetles). They deliver nutrients needed by xylophages to nutritionally scarce dead wood. Thanks to this nutritional enrichment the larvae of the woodboring insect is able to grow and develop to adulthood. The larvae of many families of fungicolous flies, particularly those within the superfamily Sciaroidea such as the Mycetophilidae and some Keroplatidae feed on fungal fruiting bodies and sterile mycorrhizae.
Title: Wombat State Forest
Content:  Hundreds of fungal species have been documented across the forest's diverse habitats. Fungi play a vital ecological role through their mutually beneficial symbioses with the great majority of plants as well as with numerous animal species. They are also important recyclers of organic matter, breaking down complex molecules, returning organic matter to the soil and making nutrients available to plants. To put it simply, without fungi, the forest wouldn't exist. The major morphological fungal groups such as agarics (fungi that typically have an umbrella shape and gills beneath the cap, commonly known as mushrooms), puffballs, coral fungi, polypores, disc fungi, clubs and lichenised fungi exist 
Title: Sporocarp (fungi)
Content:  A wide variety of animals feed on epigeous and hypogeous fungi. The mammals that feed on fungi are as diverse as fungi themselves and are called mycophages. Squirrels and chipmunks eat the greatest variety of fungi, but there are many other mammals that also forage on fungi, such as marsupials, mice, rates, voles, lemmings, deer, shrews, rabbits, weasels, and more. Some animals feed on fungi opportunisticaly, while others rely on them as a primary source of food. Hypogeous sporocarps are a highly nutritious primary food source from some small mammals like the Tasmanian Bettong. Evidence of this is that the composition 
Title: List of fungi of South Africa
Content:  is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the Eumycota (true fungi or Eumycetes), which share a common ancestor (from a monophyletic group), an interpretation that is also strongly supported by molecular phylogenetics. This fungal group is distinct from the structurally similar myxomycetes (slime molds) and 
Title: Outline of fungi
Content:  The following outline is provided as an overview of and topical guide to fungi: Fungi &ndash; "Fungi" is plural for "fungus". A fungus is any member of the group of eukaryotic organisms that includes unicellular microorganisms such as yeasts and molds, as well as multicellular fungi that produce familiar fruiting forms known as mushrooms. Biologists classify these organisms as a kingdom, Fungi, separate from the other life-kingdoms of plants, animals, protists, and bacteria. One difference that places fungi in a different kingdom is that their cell walls contain chitin, unlike the cell walls of plants, bacteria and some protists. Similar to animals, fungi are heterotrophs, that is, they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through air or water. Fungi function as the principal decomposers in ecological systems.
Title: Fungivore
Content:  In 2008, Euprenolepis procera a species of ant from the rainforests of South East Asia was found to harvest mushrooms from the rainforest. Witte & Maschwitz found that their diet consisted almost entirely of mushrooms, representing a previously undiscovered feeding strategy in ants. Several beetle families, including the Erotylidae, Endomychidae, and certain Tenebrionidae also are specialists on fungi, though they may eat other foods occasionally. Other insects, like fungus gnats and scuttle flies, utilize fungi at their larval stage. Feeding on fungi is crucial for dead wood eaters as this is the only way to acquire nutrients not available in nutritionally scarce dead wood.
Title: Food web
Content:  In a detrital web, plant and animal matter is broken down by decomposers, e.g., bacteria and fungi, and moves to detritivores and then carnivores. There are often relationships between the detrital web and the grazing web. Mushrooms produced by decomposers in the detrital web become a food source for deer, squirrels, and mice in the grazing web. Earthworms eaten by robins are detritivores consuming decaying leaves. "Detritus can be broadly defined as any form of non-living organic matter, including different types of plant tissue (e.g. leaf litter, dead wood, aquatic macrophytes, algae), animal tissue (carrion), dead microbes, faeces (manure, dung, faecal pellets, guano, frass), as well as products secreted, excreted or exuded from organisms (e.g. extra-cellular polymers, nectar, root exudates and leachates, dissolved organic matter, extra-cellular matrix, mucilage). The relative importance of these forms of detritus, in terms of origin, size and chemical composition, varies across ecosystems."

Question: where does fungi go on a food web?
Answer: the end.
decomposers.
At the end.