Abstract
This study aims to determine changes in the floristic composition and structure. The survey was conducted in seven localities of the SW region. Transects were opened perpendicular to the main tidal channels. Sampling plots (25 m x 25 m) were established to evaluate the structure of the vegetation. All African Atlantic mangroves characteristics species are present. Rhizophora spp. predominate as in most African stands. Floristic diversity was low and varied according to localities. The Shannon diversity index H" ranged from 0.34 to 1.91 and the Margalef specific richness index varied from 1.08 to 4.45. The mean diameter was 20.38 18.79 cm; and trees height ranged from 3.82 to 37 m. The absolute density was 934.19 564.88 stem ha -1 and the basal area was 1.54 0.99 m 2 ha -1 . In many cases, the diameter class distribution has shown characteristics of disturbed stands. The Newman-Keuls test has shown differences between plots. The sample unit sizes, the degree of vegetation evolution, the Nypa fruticans invasion and the anthropogenic activities extent affect significantly the characteristic of mangrove stands.
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Claims 12
Claim · model-written summary
All characteristic African Atlantic mangrove species were present.
Verbatim
e0“All African Atlantic mangroves characteristics species are present”
Claim · model-written summary
Rhizophora predominated.
- Taxon
- Rhizophora spp.
Rhizophorae0 - Outcome
- predominatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizophora spp. predominate as in most African stands”
Claim · model-written summary
Floristic diversity was low and varied by locality.
Verbatim
e0“Floristic diversity was low and varied according to localities”
t0“Mangrove Vegetation”
Claim · model-written summary
Shannon diversity ranged from 0.34 to 1.91.
Verbatim
e0“Shannon diversity index H" ranged from 0.34 to 1.91”
t0“Mangrove Vegetation”
Claim · model-written summary
Margalef richness ranged from 1.08 to 4.45.
Verbatim
e0“Margalef specific richness index varied from 1.08 to 4.45”
t0“Mangrove Vegetation”
Claim · model-written summary
Mean diameter was reported as 20.38 18.79 cm.
Verbatim
e0“mean diameter was 20.38 18.79 cm”
t0“Mangrove Vegetation”
Claim · model-written summary
Tree height ranged from 3.82 to 37 m.
Verbatim
e0“trees height ranged from 3.82 to 37 m”
t0“Mangrove Vegetation”
Claim · model-written summary
Absolute density was reported as 934.19 564.88 stems per hectare.
Verbatim
e0“absolute density was 934.19 564.88 stem ha -1”
t0“Mangrove Vegetation”
Claim · model-written summary
Basal area was reported as 1.54 0.99 square metres per hectare.
Verbatim
e0“basal area was 1.54 0.99 m 2 ha -1”
t0“Mangrove Vegetation”
Claim · model-written summary
Diameter class distributions often indicated disturbed stands.
Verbatim
e0“In many cases, the diameter class distribution has shown characteristics of disturbed stands”
t0“Mangrove Vegetation”
Claim · model-written summary
Plots differed in the Newman-Keuls test.
Verbatim
e0“The Newman-Keuls test has shown differences between plots”
t0“Mangrove Vegetation”
Claim · model-written summary
Sampling unit size, stand evolution, Nypa invasion and human activity significantly affected stand characteristics.
Not reportedDirection
Verbatim
e0“The sample unit sizes, the degree of vegetation evolution, the Nypa fruticans invasion and the anthropogenic activities extent affect significantly the characteristic of mangrove stands”
t0“Mangrove Vegetation”