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      The species richness of termites (Isoptera) under differing levels of forest disturbance in the Mbalmayo Forest Reserve, southern Cameroon

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          Abstract

          Five forest plots of differing disturbance levels were sampled qualitatively for termites in the Mbalmayo Forest Reserve, southern Cameroon, using 100 m belt transects. Results showed a large reduction in species richness in two severely disturbed plots compared with a Near Primary plot, but little difference in two less disturbed regenerating plots; there is some evidence for a slight increase in species richness in the regenerating plots. Soil-feeders predominate in the primary and regenerating plots, but are greatly reduced in the severely disturbed plots. Wood-feeders appear to be more resilient to disturbance than soil-feeders, although their species richness is low in the most disturbed plots. The Termitinae are the dominant taxonomic group in the Near Primary plot, the Apicotermitinae in the less disturbed regenerating plots and the Macrotermitinae in the clear felled areas. There appears to be no secondary invasion of plots by savanna-associated species, and the small apparent increase in species richness in the less disturbed regenerating plots appears to be due to the influx of forest species usually associated with natural gaps.

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          The Estimation of Species Richness by Extrapolation

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            Estimating species richness using the jackknife procedure.

            An exact expression is given for the jackknife estimate of the number of species in a community and for the variance of this number when quadrat sampling procedures are used. The jackknife estimate is a function of the number of species that occur in one and only one quadrat. The variance of the number of species can be constructed, as can approximate two-sided confidence intervals. The behavior of the jackknife estimate, as affected by quadrat size, sample size and sampling area, is investigated by simulation.
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              Estimating Species Richness: The Second-Order Jackknife Reconsidered

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                Author and article information

                Journal
                applab
                Journal of Tropical Ecology
                J. Trop. Ecol.
                Cambridge University Press (CUP)
                0266-4674
                1469-7831
                February 1995
                July 2009
                : 11
                : 01
                : 85-98
                Article
                10.1017/S0266467400008439
                d12b29f0-5b5b-4afa-9397-c5f86c456d43
                © 1995
                History

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