Facilivota

Facilivota is the oldest major domain of Life and forms one of its two deepest surviving cellular branches alongside Asperlae. Its members, known as Facili, are generally small and structurally simple, but occupy an immense range of ecological and metabolic niches.

Facili occur in water, soil, sediments, living organisms, decomposing material, mineral surfaces, atmospheric aerosols, and microbial communities. The domain includes free-living organisms, primary producers, decomposers, parasites, commensals, and numerous symbionts.

General Biology

Most Facili lack the internal compartmentalization found in Proviyota. Their smaller size and comparatively simple structure allow rapid growth and reproduction, while many lineages possess a lot of metabolic flexibility.

Individual Facili may occur as isolated cells or form colonies, mats, films, threads, crusts, blooms, and layered microbial communities. These larger structures can produce internal chemical gradients and allow several species with different metabolisms to coexist within a small area.

Facilivote reproduction most commonly occurs through cellular division, although budding, fragmentation, and colonial propagation occur in several species. Genetic exchange between unrelated cells is widespread and contributes substantially to the rapid adaptation of many lineages.

Evolution

Facilivota diverged early from LUCA. Early Facili became widespread in shallow water, sediments, minerals, and other chemically variable environments, where rapid reproduction and metabolic flexibility allowed them to diversify extensively.

Before the emergence of large Proviyotes, Facili already formed large microbial ecosystems. Photosynthetic, decomposing, metal processing, and nitrogen cycling lineages created many of the chemical pathways that are fundamental to modern ecosystems.

Facilivota are the domain that later produced the lineage that became Nexivota.

Kingdom Facilivia

Facilivia contains a broad range of generalist Facili inhabiting water, sediments, soils, biological surfaces, digestive environments, and suspended organic material.

Many Facilivians form biofilms on stone, shells, roots, reefs, exposed tissues, reproductive structures, and other surfaces. These films trap nutrients, stabilize substrates, alter local chemistry, and provide food for many grazing organisms.

Host-associated Facilivians range from harmless commensals to invasive parasites. Some consume waste products or occupy stable surface communities, while others enter tissues or internal fluids. Unlike Nexivotes, they generally retain the ability to reproduce outside a specific host.

Major Facilivian clades include mat-forming, pelagic, soil-associated, crust-forming, host-associated, and parasitic lineages.

Kingdom Fosozoi

Fosozoi comprises photosynthetic Facili and includes some of the most important primary producers on Aron.

Most major Fosozoi use Azurophyll or other related pigments to capture light energy. This energy drives the electron-transport systems and supplies carbon fixation through the Morgan Cycle. Pigment composition and associated metabolic pathways vary substantially among lineages.

Fosozoi form extensive films, mats, and suspended aerial populations in shallow seas, lakes, wetlands, soils, reef systems, and the lower atmosphere. Their pigmentation contributes strongly to the blue coloration of many Soverans. Fosozoi are also the important partners of the Mykovian supergroup Sovera.

Fosozoi also form an important component of the Aerobiome. Cells, colonies, and dispersal stages are carried upward from forests, wetlands, water bodies, reefs, and other biomes and become part of the lower Aerobiome food web.

Kingdom Nitrofacia

Nitrofacia contains Facili specializing in nitrogen fixation, transformation, recycling, storage, and removal.

Nitrofacians occur throughout soils, sediments, wetlands, decomposing material, digestive systems, root networks, reef substrates, and microbial mats. Their activity controls the availability of nitrogen compounds used by producers and prevents excessive accumulation of reactive nitrogen compounds in nutrient-rich environments.

Some lineages fix molecular nitrogen directly, while others transform ammonium and related compounds or recover nitrogen from decaying material. Different Nitrofacia frequently occupy neighboring layers of the same microbial community, forming interconnected nitrogen cycles.

Associations between Nitrofacia and Mykovia are particularly common in nutrient-limited environments. Nitrogen-processing populations may occupy root networks, absorptive tissues, sediments surrounding large organisms, or specialized symbiotic structures.

Nitrogen-fixing Facili also played an important role in the early evolution of Proviyota. One ancient symbiotic lineage was incorporated into early Proviyote cells and ultimately became the Nitroplast.

Kingdom Necrofacia

Parvimortus contains Facili specializing in decomposition and nutrient recycling.

Parvimortians consume dead tissues, shed surfaces, discarded reproductive structures, carcasses, waste, fallen Mykovia, damaged reef material, and buried organic matter. Their activity returns carbon, nitrogen, phosphorus, sulfur, and minerals to their ecosystems.

Parvimortians frequently form successive communities during decomposition. Early populations alter tissues and surrounding chemistry, allowing later Facili, Mykovia, Provista, and scavenging Zoavia to exploit material that was initially inaccessible.

Ecology

Facilivota occurs throughout nearly every known biome.

In Silvabiomes, Facili occupy soils, wet surfaces, root networks, reproductive structures, decaying material, and the tissues of larger organisms. In Siccubiomes, microbial communities are concentrated around water-sharing root networks, aquifers, lakes, and moist substrates.

Marine Facili form films and mats across reefs, sediments, shallow waters, open water, carcasses, and large aquatic organisms. Photosynthetic and suspended forms contribute substantially to marine primary production.

Atmospheric populations are concentrated within the lower Aerobiome, where cells and colonies carried upward by convection contribute to Aeroplankton and provide food for small aerial organisms.

Facili living within larger organisms may be beneficial, neutral, or pathogenic. They remain distinct from Nexivota Worker Cells, which are obligately host-dependent descendants of Facilivota and cannot maintain independent populations.

The enormous abundance and metabolic diversity of Facilivota makes the domain a central component of nutrient cycling and food webs across Aron.