Fisheries in the Southern Border Zone of Takamanda - Impact ...

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20 Sunderland et al. preliminary landuse change and vegetation map was prepared by Slayback and Sunderland (see photo gallery, this volume). This chapter provides comprehensive descriptions of the forest types found in TFR. The objectives of the vegetation survey were to: • Elicit baseline information on the structure and composition of the different forested habitat types in TFR. • Initiate long-term monitoring of vegetation in the area to help better understand the natural dynamics of the different habitat types. • Build a framework for the assessment of other taxonomic groups. • Complete a biological baseline to inform elaboration of a management plan for the area. The current study presents the first comprehensive vegetation survey for Takamanda Forest Reserve. The vegetation assessment we conducted is part of the network of long-term vegetation monitoring sites established in Cameroon and Nigeria through the International Cooperative Biodiversity Groups, a project examining the link between biodiversity and human health and drug discovery. Two long-term biodiversity monitoring plots have been established in the Ejagham Forest Reserve, located south of TFR, and three at the Campo Faunal Reserve in South Province, Cameroon. 3 Methods 3.1 Introduction The methodology employed for these surveys concentrated on both quantitative and qualitative assessments of vegetative composition. In the former, both permanent 1-ha biodiversity plots (BDPs) were established in conjunction with Modified Whitaker plots (MWPs). Ten 1-ha BDPs and 38 MWPs were established throughout the Reserve (Table 1). In addition to the quantitative vegetation assessment, qualitative surveys were undertaken through textensive collection of voucher specimens. Takamanda: the Biodiversity of an African Rainforest 3.2 Quantitative sampling The assessment sites were determined from an initial reconnaissance survey of TFR, accompanied by examination of available aerial photographs and the main vegetative components identified (Sunderland 2000). At each site, it was intended that: • the area should contain species representative of the habitat type; • the common and/or dominant species should be represented, and • the plots should be located in each habitat type to provide a “true” representation of the area’s diversity. At each site, one BDP and four MWPs were established, using standard protocols (Figure 1). The protocol for establishing a BDP (100 x 100 m), reported in detail by Dallmeier et al. (1992) and Dallmeier and Comiskey (1996), is in use at more than 300 plots in 23 countries (Dallmeier and Comiskey 1998a, 1998b) and provides a unique comparative data set from forested regions throughout the tropics. All trees with a diameter at breast height (dbh; 1.3 m) ≥ 10 cm were measured, tagged, and marked. Where possible, measurements MWP 100m MWP 50 m 1-ha Biodiversity Plot (BDP) 100m MWP 20 m 500m Figure 1. Field arrangement of 1-ha biodiversity plots (BDPs) and modified Whitaker plots (MWPs) MWP
Vegetation Assessment Table 1. Location of plots in Takamanda Forest Reserve, Cameroon. The ten BDPs are numbered from P6 through P15. Plots 1- 3 are sited in the Campo Faunal Reserve and plots 4 and 5 in the Ejagham Forest Reserve, Cameroon. MWPs are numbered M1 to M36. Plot # Location Gazeteer Elevation Terrain and site description P6 Basho hills 06Ê07’818’’N; 320m Steep sloping M1, M2, M3, M4 09Ê24’776’’E ridges P7 Basho hills 06Ê07’871’’N; 400m On hillside M5, M6, M7, M8 09Ê24’589’’E plateau P8 Matene to Mendi hills 06Ê18’349’’N; 780m Steep sloping M9, M10 09Ê22’396’’E hillside P9 Mendi hills to Obudu 06Ê19’400’’N; 1,200m Montane gallery M11, 09Ê23’474’’E forest in M12 grassland P10, Mboh-Matene 06Ê11’340’’N; 210m Flat plateau in M13, M14, M15, M16 09Ê20’339’’E lowland forest P11 Mboh-Matene 06Ê11’815’’N; 210m Flat plateau in M17, M18, M19, M20 09Ê20’302’’E lowland forest P12 Magbe 06Ê07’488’’N; 150m Riverine forest; M21, M22, M23, M24 09Ê12’888’’E flat plateau P13 Magbe 06Ê07’885’’N; 150m Riverine forest; M25, M26, M27, M28 09Ê13’109’’E flat plateau P14 Takamanda camp 06Ê03’160’’N; 120m Flat plateau in M29, M30, M31, M32 09Ê16’794’’E lowland forest P15 Takamanda camp 06Ê03’264’’N; 120m Flat plateau in M33, M34, M35, M36 09Ê16’507’’E lowland forest 21 SI/MAB Series #8, 2003
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70 O’Kah Species distribution Tak
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72 Takamanda: the Biodiversity of a
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74 h—2@y——A 2 IE2— y2@w—
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76 The sites which have been survey
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78 species from a phylogenetic poin
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80 Appendix 1. Species list and sam
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82 Family / Species Notes Locations
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84 LeBreton et al. 3 Methods A team
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86 LeBreton et al. Bothrolycus ater
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90 LeBreton et al. Perret, J.-L. 19
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94 LeBreton et al. Appendix 1 (cont
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96 Languy and Motombe f 5 q—2˜
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100 Languy and Motombe encroachment
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102 Languy and Motombe Appendix 1.
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144 Table 1. Type and number of fis
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146 Migrating Labeo spp. make up 10
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148 Mdaihli et al. Mochokidae Barbu
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150 Monthly yield (t) 200 160 120 8
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156 Sunderland et al. Table 1. Majo
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No. of individuals (n = 315) 200 15
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No. of individuals (n = 1065) 1000
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Gnetum spp. Piper guineensis Site T
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Resource Impacts of seasonality Ava
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174 Slayback 7 H S IH type of autom
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