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Closed watercourse with medium gradient

Type 6

Salinity: <1 g/L
Altitude: <100 m (ici : 32-120 m)
Width of the watercourse (bottom width):  <5 m
Current: Usually low to medium

Description

The watercourse has an average gradient, has fine and coarse grain size (lava sometimes present). The water is fresh, generally lightly loaded. The watercourse is narrow, the canopy is continuous and the environment is totally forested. The banks are no longer clear and merge into the hillsides framing the watercourse, with fairly steep gradients (deep watercourse).

Description

Connection of riparian areas (if intact):  Total

Altitude: <100 m (ici : 32-120 m)

Watercourse width (low): <5 m

Grain size (banks and bed): Fine, with stones, (sometimes boulders and rocks coming from the gradients)

Gradient: Average: 4.9% (1-17%)

Current:
Usually low to medium

Banks:  42° (16°-70°)

Salinity:
<1 g/L

Ten-year daily rainfall: 155 to 200 mm

Sampled stations

  • Madame (upstream)
  • Onze heures (upstream)
  • Viard (upstream)

Main
species observed

Tree species : Calophyllum antillanum, Chimarrhis cymosa, Hymenaea courbaril, Protium attenuatum, Sterculia caribaea, Simarouba amara, Cecropia schreberiana, Syzygium jambos, Artocarpus altilis, Mangifera indica, Bambusa vulgaris

Shrub species Piper dilatatum, Cyathea arborea, Psychotria mapourioides, Clidemia umbrosa, Dracaena fragrans

Herbaceous species Thelypteris reticulata, Selaginella flabellata, Ischnosiphon arouma, Adiantum latifolium, Dieffenbachia seguine.

underlined: bioengineering / restoration; in gray: species from degraded environments; *: species from somewhat xerophilic environment

Intact type

Degraded type

Intact profile

Learn more about the watercourses and riparian areas of Guadeloupe
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