| Titre |
Change in the woody floristic composition, diversity and structure from protected to unprotected savannahs in Pendjari Biosphere Reserve (Benin, West Africa). |
| Auteurs |
HOUEHANOU Thierry Dèhouégnon [1],
GLELE KAKAI ROMIN LUCAS [2],
ASSOGBADJO ACHILLE EPHREM [3],
KINDOMIHOU M. VALENTIN [4],
HOUINATO MARCEL ROMUALD BENJAMIN [5],
RÜDIGER Wittig [6],
SINSIN AUGUSTIN BRICE [7],
|
| Journal: |
African Journal of Ecology |
| Catégorie Journal: |
Africaine |
| Impact factor: |
0.824 |
| Volume Journal: |
51 |
| DOI: |
|
| Resume |
Savannahs are widespread vegetation type in Sudanian
zone of Africa. As protected areas are often assumed to be
the best way to conserve biodiversity, we assessed the
effectiveness of the Pendjari Biosphere Reserve in Benin,
for maintaining savannah woody species composition,
diversity and structure. Square plots of 900 m2 were
randomly established in protected and surrounding unprotected
savannahs, and all woody species (dbh 1 cm)
were recorded and identified. Species composition, Importance
Value Index, densities, basal area and diversity
indexes were assessed in relation to conservation status.
The results showed that DCA based on presence/absence
species data did not separate clearly protected savannahs
from unprotected ones. However, some species were
prominent in unprotected savannahs while others showed
the same scheme in protected ones. Diversity indexes
indicated a good distribution of species in the two
savannah types. The woody density showed a higher
value in protected than unprotected savannah at shrub
layer level. The basal area was significantly higher in the
protected savannah than unprotected one at the two
woody layer levels. It can be concluded that biodiversity
conservation in surrounding unprotected areas should be
of great importance to increase biodiversity conservation
by protected area whether specific actions were implemented. |
| Mots clés |
conservation, diversity, savannah, structure,
woody species |
| Pages |
358 - 365 |
| Fichier |
(PDF) |