Thexar-VII: The-Xa — Sha-El 01: The-Xa Vokh-El — Biodiversity of Théxar
"Life finds a way. Not just to survive — to thrive. Théxar is a planet where life has flourished like nowhere in the known galaxy." — Keeper of Biodiversity, +3,800 y.
Ruun-ak rass: → rhu [Thexar-I, Ruun 17, "Flora"], → rhu [Thexar-I, Ruun 18, "Fauna"], → rhu [Thexar-I, Ruun 21, "Xa-The Xa-Vokh Mor-Ven"]. Mor-ven: Théxar hosts an exceptional biosphere shaped by 4.2 billion cycles of evolution under an orange sun, active tectonics, and abundant sulfur. Its life uses a 6-letter genetic code (G, C, A, T, P, X), D-chirality, and H₂S chemosynthesis, yielding roughly 3.15 million described species out of an estimated 5.22 million.
01.1 Scale of Biodiversity
01.1.1 Described Species
| Kingdom | Species Described | Estimated Total | Study Coverage |
|---|---|---|---|
| Plants (Chromophyta et al.) | 380,000 | ~520,000 | 73% |
| Animals (incl. Thermochromadae) | 1,800,000 | ~2,500,000 | 72% |
| Fungi (Mycophyta) | 120,000 | ~200,000 | 60% |
| Microorganisms | 850,000 | ~2,000,000 | 42% |
| Total | 3,150,000 | ~5,220,000 | ~60% |
01.1.2 Endemism by Region
| Region | % Endemic Species | Number of Endemics |
|---|---|---|
| Vexar (overall) | 38% | ~690,000 |
| Raal Plateau (highlands) | 52% | ~120,000 |
| Ocean Gharra (depths) | 45% | ~280,000 |
| Cave systems | 95% | ~45,000 |
| Subglacial lakes | 100% | ~2,000 |
| Kharak (savannas) | 18% | ~320,000 |
| Shan Desert | 42% | ~85,000 |
01.2 Unique Features of the Biosphere
01.2.1 Six-Letter Genetic Code
Théxar's biosphere uses 6 nucleotides (G, C, A, T, P, X) instead of 4.
Consequences:
- 216 codons (instead of 64)
- 24 proteinogenic amino acids (instead of 20)
- Repair and replication checks protect the genome
- Protein diversity depends on sequence and folding
01.2.2 Sulfur Cycle
H₂S fuels chemosynthesis and participates in signalling. Its effects depend on concentration and the organism’s adaptations: excess can damage even resistant tissues.
01.2.3 D-Chirality
Chiral amino acids belong to the D series and sugars to the L series; glycine is achiral. This limits compatibility with Earth enzymes and nutrients without excluding chemical interaction or toxicity.
01.3 Biosphere Productivity
| Parameter | Value | Relative Magnitude |
|---|---|---|
| Primary production | 120 Gt C/cycle | High |
| Producer biomass | 1,200 Gt C | High |
| Consumer biomass | 400 Gt C | Moderate |
| Biomass turnover rate | 13.3 cycles | High |
| Photosynthesis efficiency | 4.2% | High |
Ruun Ven
- Théxar's biosphere is the product of 4.2 billion cycles of evolution under an orange sun, active tectonics, and abundant sulfur.
- About 3.15 million species have been described out of an estimated 5.22 million, giving roughly 60% overall study coverage.
- Endemism is extreme in isolated habitats: 95% in cave systems and 100% in subglacial lakes.
- A 6-nucleotide genetic code (G, C, A, T, P, X) yields 216 codons and 24 proteinogenic amino acids, without determining repair efficiency or protein complexity by itself.
- H₂S chemosynthesis operates alongside photosynthesis as a full metabolic pathway.
- Opposite chirality restricts enzyme compatibility; it does not prevent chemical interaction.