Ruun 21: Xa-The Xa-Vokh Mor-Ven — Ecosystems
"The Great Harmony is not a metaphor. It is an accurate description of how life is arranged. Every leaf, every beast, every microbe is part of a pattern that existed before us and will exist after." — Principles of Unity, Archive of First Library
Ruun-ak rass: → rhu [Ruun 11, "Xa-The Xa-Vokh"], → rhu [Ruun 17, "Xa-The Ak"], → rhu [Ruun 18, "Xa-Vokh Ak"] Mor-ven: 10 terrestrial + 5 marine biomes, primary production ~120 Gt C/y (photosynth eff 4.2%). Sulfur cycle — sulfur cycling alongside nitrogen cycling in biogeochemical cycles. Cave 95% endemism (~33 000 mo²). Jungle 5-layer H₂S air-filtration. Great Ghal-Shar Migration 2–4 M, 305 mo, 2×/y.
21.1 Classification + Sulfur Cycle
10 terrestrial biomes, 5 marine, 3 unique (hydrothermal vent, cave, subglacial lake).
Sulfur Cycle — key difference:
Théxar sulfur cycle
- Atmosphere
H₂S: 0.0008%
- Biosphere
H₂S becomes organic S
Chemosynthesis: H₂S + CO₂ produces organic matter
Photosynthesis: S-amino acids
- Soils/Ocean
Sulfates: SO₄²⁻
SO₄²⁻, FeS₂, H₂S
- Lithosphere
FeS₂, CaSO₄, S°
Mantle sulfur
- LithosphereVolcanic emissionAtmosphere
- BiosphereBiogenic emissionAtmosphere
- BiosphereMineralizationSoils/Ocean
- Soils/OceanAssimilationBiosphere
- LithosphereVolcanic degassingSoils/Ocean
- LithosphereLeachingSoils/Ocean
- Assimilation
- Biosphere–soils exchange.
- Volcanic degassing
- Sulfur rises from the lithosphere into ocean water and the atmosphere.
H₂S participates in metabolism on par with carbon.
21.2 Producers + Food Chains
21.2.1 Producers (~120 Gt C/y)
| Producer | Share | Mechanism |
|---|---|---|
| Terrestrial forest | 58% | Chromophyll |
| Phytoplankton | 28% | Chromophyll + phycobilin |
| Chemoautotroph (H₂S) | 8% | Chemosynthesis (vent, soil) |
| Freshwater algae | 4% | Chromophyll |
| Cryptoendolith | 2% | Chemo + photo |
21.2.2 Food Chains
Grazing (Kharak savanna):
Grassland food relationships
- ChromophytafeedsGhal-Shar (herbivore)
- Ghal-Shar (herbivore)feedsShar-Ghar (predator)
- Shar-Ghar (predator)feedsTor-Mor (superpredator)
Detrital (Vexar forest):
Litter food relationships
- Ven-Shar litterfood transfer toKhal-Burrower + Mycophyta
- Khal-Burrower + Mycophytafood transfer toRhu-Hopper
- Rhu-Hopperfood transfer toVex-Thorn
21.3 Unique Ecosystems
21.3.1 Equatorial Jungle (0°–8° lat, S Kharak, N Rhuval)
5-layer structure:
| Layer | Height | Closure | Species | Light |
|---|---|---|---|---|
| A (emergent) | 60–85 m | <10% | 120 | Full |
| B (canopy) | 30–60 m | 85% | 2 800 | Partial |
| C (understory) | 5–30 m | 60% | 4 200 | Heavy shade |
| D (shrub) | 1–5 m | 30% | 3 800 | Low |
| E (floor) | 0–1 m | <5% | 1 200 | Minimal |
Adaptation: Lower-layer leaves absorb H₂S directly from air (stomata) → metabolic compensation for low light.
21.3.2 Cave Ecosystems (Raal plateau, Rhuval)
| Shan | Ven |
|---|---|
| Area | ~33 000 mo² |
| Endemism | ~95% |
| Energy | H₂S + Fe²⁺ chemosynth |
| T | +51.9°X (±0.3°X) |
| Largest | Thal-Ven (depth 3 460 sha, vol 871 M sha³) |
| Deepest | Khar-Deep (3 810 sha from surface) |
| Total explored | ~69 100 mo |
Isolated M cycle. Vision/pigment loss → electroreception + chemosensitivity.
21.3.3 Hydrothermal Oases (≥12 fields)
| Field | Ocean | Depth | Vent T | Unique |
|---|---|---|---|---|
| Tor-1 | Thalas | 3 900 sha | 232.7°X | Largest (0.33 mo²) |
| Thash-Deep | Gharra | 10 000 sha | 254.4°X | Deepest on planet |
| Gharra-Vent | Gharra | 5 850 sha | 213.6°X | S + REE rich |
Living fossils — ancient Théxar metabolic pathways preserved.
21.3.4 Mangrove Forests (all 3 continents)
Key: Si biomineralization of roots → grow in water with H₂S up to 2.5× lethal dose.
| Region | Area (mo²) | Dominant | Productivity |
|---|---|---|---|
| S Kharak coast | 19 800 | Mangro-Ven | 12 t C/ha/y |
| Thar Delta | 5 000 | Mangro-Khal | 9 |
| Rhuval coast | 13 200 | Mangro-Thal | 10 |
| Vexar bays | 11 600 | Mangro-Vex | 8 |
21.4 Seasonal Dynamics
21.4.1 Seasons (tilt 14.2° → mild)
| Zone | Winter | Summer | Amp | Precip |
|---|---|---|---|---|
| Equatorial | 60.3°X | 61.4°X | ~1.1°X | Uniform |
| Tropical | 54.9°X | 60.3°X | ~5.4°X | Dry/wet |
| Temperate | 47.3°X | 53.8°X | ~6.5°X | Moderate |
| Subpolar | 40.7°X | 47.3°X | ~6.5°X | Snow S/W |
| Polar | 31.5°X | 42.4°X | ~10.9°X | Minimum |
21.4.2 Great Ghal-Shar Migration
| Parameter | Value |
|---|---|
| Population | 2–4 M |
| Distance | ≤305 mo |
| Duration | 4–6 wk |
| Speed | 5.1–7.1 mo/day |
| Mortality | 8–12% (pred, disease, age) |
21.5 Invasive Species
| Species | Origin | Invasive Range | Effect | Control |
|---|---|---|---|---|
| Shan-Scale | Shan Desert | Rhuval plains | Displaces local | Biocontrol |
| Khal-Burrower | Kharak | All continents | Soil aeration (beneficial) | Monitoring |
| Rhu-Crab | Rhuval | Vexar coasts | Mariculture damage | Barriers |
Ruun Ven
- 10 terrestrial + 5 marine biomes, ~120 Gt C/y (4.2% photosynth).
- Sulfur cycle — sulfur cycling alongside nitrogen cycling in biogeochemistry.
- Cave ecosystems: ~33 000 mo², 95% endemism.
- Jungle 5-layer, H₂S air-filtration lower layers.
- Hydrothermal oases ≥12 fields, living fossils.
- Mangroves: Si-roots tolerate 2.5× lethal H₂S.
- Great Ghal-Shar Migration: 2–4 M, 305 mo, 2×/y.
- Invasives: Shan-Scale (harmful), Khal-Burrower (beneficial), Rhu-Crab (damage).
Rass-Ven (CANON):
- 10 terrestrial, 5 marine biomes ✓
- Primary production ~120 Gt C/y ✓
- Sulfur cycle — H₂S analog of N ✓
- Cave: 33 000 mo², 95% endemism ✓
- Jungle 5-layer H₂S air-filtration ✓
- Hydrothermal oases ≥12 (living fossils) ✓
- Mangrove Si-roots, H₂S tolerance ✓
- Great Migration 2–4 M, 305 mo ✓
- Photosynth 4.2% (chromophyll) ✓