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

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Sunderland, T. C. H. 2001. Cross River State Community Forest Project: Non-timber Forest Products Advisor Report. Department for International Development / Environmental Resources Management / Scott Wilson Kirkpatrick & Co Ltd., UK. Sunderland, T. C. H., a n d P. Tchouto. 1999. AParticipatory Survey and Inventory of Timber and Non-timber Forest Productsof the Mokoko River Forest Reserve, SW Province, Cameroon. Unpubl. report for USAID/CARPE. Wilkie, D. 1999. CARPE and non-wood forest products. Pp. 3-18 in: T. C. H. Sunderland, L. E. Clark, and P. Vantomme (eds.). The Non-wood Forest Products of Central Africa: Current Research Issues and Prospects for Conservation and Development. Food and Agriculture Organization, Rome. Wollenberg, E., and A. Ingles (eds.). 1999. Incomes from the Forest: Methods for the Development and Conservation of Forest Products for Local Communities. CIFOR, Bogor.
Landcover change in the Takamanda Forest Reserve, Cameroon: 1986-2000 1 Introduction As with many areas of conservation interest, the Takamanda Forest Reserve (TFR) is part of a dynamic, human-influenced landscape. Although located in a fairly remote region along the Nigerian border, the reserve is surrounded by numerous small villages on its eastern and southern sides, with three villages enclaved within the reserve itself (see figure 2 in Chapter 1). Figure 1 graphically indicates the relative proximity of much of the reserve to human settlements and movement. Additionally, numerous old village sites scattered throughout parts of the reserve indicate the extent and fluidity of previous human settlements. Until recently, access to the reserve was relatively difficult, often requiring a day’s journey on foot to reach either the southern boundary (from Mamfe) or the northern boundary (from the Obudu Cattle Ranch in Nigeria). Since the late 1980s, however, access to the area has been improved with the completion of a largespan bridge over the Manyu river at Mamfe. With this bridge in place, both logging companies and the government have constructed unpaved roads into the region. The government has also made significant progress on the long-awaited Mamfe-to-Akwaya road, which may be completed within the next few years at current rates of progress. A network of footpaths currently connects most villages in the region to one another. Given the existing pattern of settlements and the recently improved access to the region, we wanted to examine recent landcover change in and around TFR. Fortunately, the archive of high-resolution satellite imagery for the region includes clear images from 1986 Dan Slayback and 2000, allowing a study of landcover changes over that 14-year period. 2 Methods 2.1 Data Chapter 12 NASA’s Landsat series of earth-observing satellites have been acquiring medium to high-resolution multispectral earth imagery since 1972. Starting with the launch of Landsat 4 in 1982, the satellites began carrying the 30meter resolution Thematic Mapper (TM) instrument. The resulting TM data archive, from 1982 to present, is the most extensive global collection of high-resolution imagery. However, the archive contains relatively few cloudfree images from the coastal areas of central Africa, including the scene covering the TFR (identified as WRS path 187 row 56). This is in part due to the extreme cloudiness of the region and the satellite’s 16-day repeat coverage (any scene is observed only once every 16 days). Also, previous data acquisition policies and technical difficulties hindered the acquisition of imagery over central Africa until the launch of Landsat 7 in 1999. Fortunately, one relatively clear Landsat 5 image is available from December 12, 1986. This image and a clear Landsat 7 image from December 10, 2000 were acquired for this analysis. To ensure the precise image-to-image registration required for detecting changes between an image pair, both scenes were orthorectified (by the EarthSat corporation). Orthorectification uses the known locations of many ground reference points to remove the artificial curvature of satellite-acquired imagery, which is an artifact of the satellite’s viewing geometry. Further preprocessing of the imagery was unnecessary; due to the SI/MAB Series #8, 2003, Pages 173 to 179
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16 Comiskey and Dallmeier 5.4 Evalu
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18 Takamanda: the Biodiversity of a
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20 Sunderland et al. preliminary la
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22 Sunderland et al. avoided protru
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24 Sunderland et al. Table 2. Summa
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26 Sunderland et al. lowland forest
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28 Sunderland et al. impressive cat
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38 Sunderland et al. monitoring pro
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40 Sunderland et al. Letouzey, R. 1
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42 Sunderland et al. Appendix 1. Pl
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44 Sunderland et al. Agelaea pentag
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46 Sunderland et al. Afzelia pachyl
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48 Sunderland et al. Rhabdophyllum
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50 Sunderland et al. Aningeria robu
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52 Sunderland et al. Nervilia sp. P
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58 O’Kah Table 3. Species found i
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60 O’Kah Table 6. Indicators of s
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62 O’Kah Larsen, T. B. 1997. Butt
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64 O’Kah Appendix 1 (cont.). Chec
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66 O’Kah Appendix 1 (cont.). Chec
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68 O’Kah Species distribution Tak
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78 species from a phylogenetic poin
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96 Languy and Motombe f 5 q—2˜
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98 Languy and Motombe Table 3. Thre
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100 Languy and Motombe encroachment
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