Description

The ours (bears) data frame has 38 rows, areas of the "Inventaire National Forestier", and 10 columns.

Usage

Format

This data frame contains the following columns:

1. altit: importance of the altitudinal area inhabited by bears, a factor with levels:

   • 1 less than 50% of the area between 800 and 2000 meters

   • 2 between 50 and 70%

   • 3 more than 70%

2. deniv: importance of the average variation in level by square of 50 km2, a factor with levels:

   • 1 less than 700m

   • 2 between 700 and 900 m

   • 3 more than 900 m

3. cloiso: partitioning of the massif, a factor with levels:

   • 1 a great valley or a ridge isolates at least a quarter of the massif

   • 2 less than a quarter of the massif is isolated

   • 3 the massif has no split

4. domain: importance of the national forests on contact with the massif, a factor with levels:

   • 1 less than 400 km2

   • 2 between 400 and 1000 km2

   • 3 more than 1000 km2

5. boise: rate of afforestation, a factor with levels:

   • 1 less than 30%

   • 2 between 30 and 50%

   • 3 more than 50%

6. hetra: importance of plantations and mixed forests, a factor with levels:

   • 1 less than 5%

   • 2 between 5 and 10%

   • 3 more than 10% of the massif

7. favor: importance of favorable forests, plantations, mixed forests, fir plantations, a factor with levels:

   • 1 less than 5%

   • 2 between 5 and 10%

   • 3 more than 10% of the massif

8. inexp: importance of unworked forests, a factor with levels:

   • 1 less than 4%

   • 2 between 4 and 8%

   • 3 more than 8% of the total area

9. citat: presence of the bear before its disappearance, a factor with levels:

   • 1 no quotation since 1840

   • 2 1 to 3 quotations before 1900 and none after

   • 3 4 quotations before 1900 and none after

   • 4 at least 4 quotations before 1900 and at least 1 quotation between 1900 and 1940

10. depart: district, a factor with levels:

    • AHP Alpes-de-Haute-Provence

    • AM Alpes-Maritimes

    • D Drôme

    • HP Hautes-Alpes

    • HS Haute-Savoie

    • I Isère

    • S Savoie

Source

Erome, G. (1989) L'ours brun dans les Alpes françaises. Historique de sa disparition. Centre Ornithologique Rhône-Alpes, Villeurbanne. 120 p.

Examples