NDEMA NSOMBO Eugene1,2*, AKO'O BENGONO Frédéric1, ETAME Jacques2, NDONGO DIN3, AJONINA Gordon1,4 and Paul BILONG5

 

1Department of Aquatics Ecosystem's Management, Institute of Fisheries and Aquatic Sciences (ISH), University of

Douala, P. O. Box. 24157 Douala – Cameroon.

2Department of Geosciences and Environment, Faculty of Sciences, University of Douala, P. O. Box. 24157 Douala- Cameroon.

3Department of Botany, Faculty of Science, University of Douala, P.O. Box. 24157 Douala-Cameroon.

4Cameroon Wildlife Conservation Society, P. O. Box. 54 Mouanko, Littoral Region-Cameroon.

5Department of Earth Sciences, Faculty of Sciences, University of Yaoundé, P. O. Box. 812 Yaounde-Cameroon.

 

Received 3 July, 2015; Accepted 25 August, 2015

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This  study was  conducted  to  assess the  capacity of  mangroves soils  to  stock  carbon  and  how degradation can influence its various properties. Transect method was performed. So, two transects of light inside the degraded transect (Brown to grayish) than the natural transect (brown to blackish) while100 m length and 10 m wide were established according to the degradation level. Total of 18 Soil samples were taken to be described and analysed. The degraded transect (T1) shows a mean carbon stock value of 2102.06 ± 405 Mg.ha-1 while natural (T ) accumulate 2476.6 ± 409 Mg.ha-1. Colour are more

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NDEMA NSOMBO Eugene 1,2*, SONE ESSOH Willy 1, GORDON Ajonina 1,4, ETAME Jacques   2, NDONGO DIN 3, DIYOUKE MIBOG Eugene

(1) Département de Gestion des Écosystèmes Aquatiques, Institut des Sciences Halieutiques (ISH), Université de
Douala, B.P. 2701 Douala-Cameroun
(2) Département de Géosciences et Environnement, Faculté des Sciences, Université de Douala, B.P. 24157
Douala-Cameroun
(3) Département de Biologie des Organismes Végétaux, Faculté de Sciences, Université de Douala, B.P. 24157
Douala-Cameroun
(4) Cameroon Wildlife Conservation Society, B.P. 54 Mouanko, Region du Littoral-Cameroun
(*) Corresponding author : Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. ; Tel : +237 699421742

Original submitted in on 21st October 2014. Published online at www.m.elewa.org on 30 January 2015 http://dx.doi.org/10.4314/jab.v85i1.7 th2

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RÉSUMÉ
Objectifs : L’objectif des présents travaux est de clarifier le stock du peuplement de Rhizophora ssp. du site
par la détermination de ses paramètres de structure spatiale et d'évaluer sa croissance annuelle.
Méthodologie et résultats : La méthode d'étude est celle des transects. Deux transects de 100mx10m
distantes de 5km orientés WNW-ESE et perpendiculaires au principal chenal ont été établis au hasard
.Chaque transect était subdivisé en trois placettes de 20mx10m et chaque placettes scindé en deux sous
placettes de 20mx5m. Les mesures (Diamètre et hauteur) Lire la suite...

Gordon N.Ajonina
CWCS Coastal Forests and Mangrove Programme, Cameroon Wildlife Conservation Society, and Institute of Fisheries and Aquatic Sciences, University of Doula, Yabassi, Douala, Cameroon

M. Tomedi Eyango
Intitute of Fisheries and Aquatic Sciences, University of Douala, Yabassi, Douala, Cameroon,BP: 7236 Douala

Published 21 Oct 2014, Encyclopedia of Natural Resources

ABSTRACT

As water covers over 70% of the Earth’s surface, all over the world from the mountain to the sea and particularly visible in the tropical savanna, urban and periurban areas, the natural vegetation associated with waterways which is mostly represented by forests at various levels of inundation from permanent (swamp forests) to dry riparian forests is credited to be among the most species-rich ecosystems. Aquatic forest ecosystems provide critical services for man and wildlife. They are important both to flora and to fauna living in water as well as those living on land. These forests are degraded or lost at an alarming rate due to factors mostly anthropogenic. This entry sets to raise the status of such forests and to demonstrate their capacity and potentials to satisfy mankind needs if sustainably managed under an emerging management regime of “aquaforestry”. Divided into two major parts: part1 –

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Tsi, Evaristus Angwafo*; Tomedi, Eyango Minette; Talla Francis N and Nguimkeng Djakwour Loius 
Corresponding author: *TSI Evaristus Angwafo
Faculty of Agronomy and Agricultural Sciences (FASA) 
P.O. Box 222 Dschang, University of Dschang, Cameroon
Tel: (+237) 74 52 94 12 Tel: Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.">Cette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser. 
Accepted 25 th February 2011.

The determination of the status and dynamics of Hippopotamus (Hippopotamus amphibious) was carried out in
the rainy season in Faro National Park from April to September 2008. The main objective was to examine the
changing population of Hippopotamus in the park. The method of collecting data was through inventory on foot
along the Faro River and questionnaires addressed to the local population and staff of the park. A total of 525
hippopotamus were counted indicating a linear density of 5.57 animals per kilometer. However, 94.1% of this
population was within the park with a high concentration in the north. The composition of the Hippopotamus
population was 228 adults, 193 sub-adults and 104 juveniles, where females constituted 68% and males 31%.
This is an encouraging population given the decline and complete absence of this species in other areas of
Africa where they were formally in a large population. The factors that influence changes in Hippopotamus
population are estimated at 34%, 30%, 16% and 7% for fights, poaching, diseases and sport hunting respectively. Lire la suite...