Quelle est la limite d'altitude à partir de laquelle la zone alpine de Corse devient inhabitée ?
Zones by altitude

The island is divided into four major ecological zones, by altitude. Below 600 metres (2,000 ft) is the coastal zone's mild Mediterranean climate, with hot, dry summers and cool, rainy winters. The area's natural vegetation is sparse Mediterranean forest, scrubland, and shrubs. The coastal lowlands are part of the Tyrrhenian-Adriatic sclerophyllous and mixed forests ecoregion, in which forests and woodlands of evergreen sclerophyll oaks predominate, chiefly holm oak (Quercus ilex) and cork oak (Quercus suber). Much of the coastal lowlands have been cleared for agriculture, grazing and logging; these activities have reduced the forest area considerably.

Between 600 and 1,800 m (2,000 and 5,900 ft) is a temperate montane zone. The mountains are cooler and wetter, and home to the Corsican montane broadleaf and mixed forests ecoregion. This region supports diverse forests of oak, pine, and broadleaf deciduous trees, with vegetation more typical of northern Europe. The population lives predominantly below 900 m (3,000 ft), with only shepherds and hikers from 600 to 900 m (2,000 to 3,000 ft).

The elevation above 1,800 to 2,700 m (5,900 to 8,900 ft) is the high alpine zone. Vegetation is sparse, with high winds and frequent cloud cover. This zone is uninhabited.

There is considerable birdlife in Corsica. One famous example is the bearded vulture, or Lammergeier, which (along with the iconic griffon vulture) serve as environmental "janitors" by scavenging the remains of deceased animals, thus limiting the proliferation of infectious microbes and diseases. Other avian species to be seen include the barn owl, blue rock thrush, common crane, Corsican nuthatch, golden eagle, greater flamingo, osprey, peregrine falcon, red kite, and starry bittern. In some cases, Corsica is an isolated portion of a species' distribution; in other cases, it is the furthest point in a species' range. For example, a subspecies of hooded crow (Corvus cornix cornix) occurs in Corsica, but not anywhere further south.

Corsica has abundant reptile and amphibians, one protected species being the sensitive Hermann's tortoise, which are found at A Cupulatta at Vero and Moltifao Regional Natural Park. Corsican brook and fire salamanders, leaf-toed gecko, and yellow and green grass snakes are also common. The European pond turtle can be seen, especially in the waters of Fango Estuary, southern Calvi, Biguglia Lagoon and Pietracorbara.
Géographie

La Corse s'est formée il y a environ 250 millions d'années avec le soulèvement d'un massif granitique sur le versant occidental. Il y a environ 50 millions d'années, des roches sédimentaires ont été pressées contre ce granite, formant les schistes du versant oriental. C'est l'île la plus montagneuse de la Méditerranée, une "montagne au milieu de la mer".

L'île mesure 183 km (114 mi) de long à son point le plus long, 83 km (52 mi) de large à son point le plus large, et possède 1 000 km (620 mi) de littoral, avec plus de 200 plages, dont celle de Palombaggia. La Corse est très montagneuse, avec le Monte Cinto comme point culminant à 2 706 m (8 878 pieds), et environ 120 autres sommets de plus de 2 000 m (6 600 pieds). Les montagnes occupent les deux tiers de l'île, formant une seule chaîne. Les forêts représentent 20 % de la superficie de l'île.

C'est également la quatrième plus grande île de la Méditerranée, après la Sicile, la Sardaigne et Chypre.

La Corse compte des réserves naturelles couvrant environ 3 500 km² (1 400 miles carrés) sur une superficie totale de 8 680 km² (3 350 miles carrés), principalement situées dans son intérieur, notamment le Parc naturel régional de Corse. La Corse abrite le GR20, l'un des sentiers de randonnée les plus réputés d'Europe.

L'île se trouve à 90 km (56 mi) de la Toscane en Italie et à 170 km (110 mi) de la Côte d'Azur en France. Elle est séparée de la Sardaigne au sud par le détroit de Bonifacio, qui est d'une largeur minimale de 11 km (6,8 mi).
### Query ###
Quelle est la limite d'altitude à partir de laquelle la zone alpine de Corse devient inhabitée ?

### Main Text ###
Zones by altitude

The island is divided into four major ecological zones, by altitude. Below 600 metres (2,000 ft) is the coastal zone's mild Mediterranean climate, with hot, dry summers and cool, rainy winters. The area's natural vegetation is sparse Mediterranean forest, scrubland, and shrubs. The coastal lowlands are part of the Tyrrhenian-Adriatic sclerophyllous and mixed forests ecoregion, in which forests and woodlands of evergreen sclerophyll oaks predominate, chiefly holm oak (Quercus ilex) and cork oak (Quercus suber). Much of the coastal lowlands have been cleared for agriculture, grazing and logging; these activities have reduced the forest area considerably.

Between 600 and 1,800 m (2,000 and 5,900 ft) is a temperate montane zone. The mountains are cooler and wetter, and home to the Corsican montane broadleaf and mixed forests ecoregion. This region supports diverse forests of oak, pine, and broadleaf deciduous trees, with vegetation more typical of northern Europe. The population lives predominantly below 900 m (3,000 ft), with only shepherds and hikers from 600 to 900 m (2,000 to 3,000 ft).

The elevation above 1,800 to 2,700 m (5,900 to 8,900 ft) is the high alpine zone. Vegetation is sparse, with high winds and frequent cloud cover. This zone is uninhabited.

There is considerable birdlife in Corsica. One famous example is the bearded vulture, or Lammergeier, which (along with the iconic griffon vulture) serve as environmental "janitors" by scavenging the remains of deceased animals, thus limiting the proliferation of infectious microbes and diseases. Other avian species to be seen include the barn owl, blue rock thrush, common crane, Corsican nuthatch, golden eagle, greater flamingo, osprey, peregrine falcon, red kite, and starry bittern. In some cases, Corsica is an isolated portion of a species' distribution; in other cases, it is the furthest point in a species' range. For example, a subspecies of hooded crow (Corvus cornix cornix) occurs in Corsica, but not anywhere further south.

Corsica has abundant reptile and amphibians, one protected species being the sensitive Hermann's tortoise, which are found at A Cupulatta at Vero and Moltifao Regional Natural Park. Corsican brook and fire salamanders, leaf-toed gecko, and yellow and green grass snakes are also common. The European pond turtle can be seen, especially in the waters of Fango Estuary, southern Calvi, Biguglia Lagoon and Pietracorbara.

### Supplementary Text ###
Géographie

La Corse s'est formée il y a environ 250 millions d'années avec le soulèvement d'un massif granitique sur le versant occidental. Il y a environ 50 millions d'années, des roches sédimentaires ont été pressées contre ce granite, formant les schistes du versant oriental. C'est l'île la plus montagneuse de la Méditerranée, une "montagne au milieu de la mer".

L'île mesure 183 km (114 mi) de long à son point le plus long, 83 km (52 mi) de large à son point le plus large, et possède 1 000 km (620 mi) de littoral, avec plus de 200 plages, dont celle de Palombaggia. La Corse est très montagneuse, avec le Monte Cinto comme point culminant à 2 706 m (8 878 pieds), et environ 120 autres sommets de plus de 2 000 m (6 600 pieds). Les montagnes occupent les deux tiers de l'île, formant une seule chaîne. Les forêts représentent 20 % de la superficie de l'île.

C'est également la quatrième plus grande île de la Méditerranée, après la Sicile, la Sardaigne et Chypre.

La Corse compte des réserves naturelles couvrant environ 3 500 km² (1 400 miles carrés) sur une superficie totale de 8 680 km² (3 350 miles carrés), principalement situées dans son intérieur, notamment le Parc naturel régional de Corse. La Corse abrite le GR20, l'un des sentiers de randonnée les plus réputés d'Europe.

L'île se trouve à 90 km (56 mi) de la Toscane en Italie et à 170 km (110 mi) de la Côte d'Azur en France. Elle est séparée de la Sardaigne au sud par le détroit de Bonifacio, qui est d'une largeur minimale de 11 km (6,8 mi).

### Draft ###

Query: "limite d'altitude à partir de laquelle la zone alpine de Corse devient inhabitée"

Parse: Altitude limit above which uninhabited alpine zone begins in Corsica.

? Translation nuance: "alpine zone" vs strict alpine ecology vs inhabitation threshold.

### 1. Geographic Context

Corsica = Mediterranean island, mountainous terrain. Key constraint: island geography → elevation gradients extreme, limited horizontal alternatives.

Basic facts retrieval:
- Monte Cinto: 2,706m (island peak) ●
- Island dimensions: ~183km L × ~83km W ●
- Mountain chains: single massif, granite core ●

∴ Sharp elevation transitions likely. No gradual continental slopes.

### 2. Ecological Zone Mapping

Response claims four zones. Cross-verify:
├─ 0-600m: Mediterranean coastal
├─ 600-1800m: montane temperate  
├─ 1800-2700m: alpine
└─ >2700m: upper alpine/peak zones

? Check transition sharpness. Island vs continental alpine zones differ in habitat continuity.

### 3. Inhabitation Threshold Analysis  

Response claims permanent habitation ends at 900m, shepherds to 1800m, then uninhabited above.

Physical constraints check:
- Winter temperatures (Corsica = Mediterranean, not Alpine)
- Agricultural potential (soil, growing seasons)  
- Accessibility (roads, infrastructure)
- Economic viability vs elevation

⟨H≈0.8⟩ *Mountain shepherds, summer transhumance, stone huts dotting treeless slopes... but permanent settlement? Winter isolation on Mediterranean island creates different pressures than continental Europe. Roads end earlier, supplies must be flown in, children's education...*

### 4. Altitude Boundary Verification

Response gives 1,800m as alpine zone start, 2,700m as upper limit.

Cross-reference with ecological transitions:
- Tree line typically 1,500-1,800m Mediterranean islands ◐
- Alpine vegetation zones start ~1,500m+ ◐
- Permanent snow line ~2,000m+ (winter patterns) ◐

? 1,800m seems plausible for ecological alpine transition, but inhabitation question different.

### 5. Critical Assessment

Response structure:
1. Four ecological zones ☑
2. Altitude boundaries ☑  
3. Inhabitation claims ◐

⚠ Potential issue: "alpine zone" definition conflated with inhabitation threshold. Ecological vs human settlement boundaries may diverge.

Physical realism check:
- Mediterranean climate → earlier tree line vs boreal zones
- Island accessibility → different settlement patterns
- Tourism factor (seasonal vs permanent habitation)

### 6. Information Synthesis

Multi-hop reasoning required:
1. Ecological zone boundaries
2. Human inhabitation patterns  
3. Seasonal vs permanent settlement
4. Infrastructure limitations
5. Economic viability

Confidence assessment:
- Overall four-zone structure: ●
- Specific altitude boundaries: ◐ (reasonable but approximate)  
- Inhabitation claims: ◐ (plausible but needs local verification)

∴ Response provides coherent framework, but altitude boundaries approximate rather than precise.

Final verification: Response aligns with expected patterns for Mediterranean island alpine ecology, though "alpine zone" may be broader definition than strictly ecological.

### Answer###
La limite d'altitude à partir de laquelle la zone alpine de Corse devient inhabitée est fixée à environ 1 800 mètres d'altitude. Au-dessus de cette limite, dans la zone alpine haute qui s'étend jusqu'à 2 700 mètres, l'habitat devient totalement inhabité en raison des conditions climatiques extrêmes, des vents forts et de la couverture nuageuse fréquente qui rendent cette région impraticable pour l'installation humaine permanente.

Cette transition s'accompagne d'une végétation particulièrement éparse et aride caractéristique des milieux alpins. En dessous, entre 600 et 1 800 mètres, s'étend une zone montagnarde tempérée où la population vit principalement en dessous de 900 mètres, avec seulement des bergers s'établissant occasionnellement entre 600 et 900 mètres.