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      Levantamento da fauna de abelhas silvestres na "zona da mata" de Minas Gerais: III. Mata secundária na região de Viçosa (Hymenoptera, Apoidea) Translated title: Survey of the wild bees of the "zona da mata" of Minas Gerais, Brazil: III. Secondary forest in Viçosa region (Hymenoptera, Apoidea)

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          Translated abstract

          The outcome of a wild bee fauna survey in a secondary forest is reported. Sampling was carried out mainly on herbaceous and shrubby vegetation under and at the border of the forest. Results are compared with data collected with the same methodology from a previously surveyed grassland nearby. The secondary forest was richer in Anthophoridae and Apidae species, and less diverse in Megachilidae. Similarity between the two habitats was low. Several unidentified species of Ceratinula, Trichocerapis mirabilis and the stingless bees Melipona bicolor, M. quadrifasciata, M. marginata, Paratrigona subnuda, Scaptotrigona tubiba and S. xanthotricha, are among the species dependent on the forest environment to survive. Bee population densities in the forest understory are as large as the largest values found for open vegetation in Southeastern Brazil; species richness is also comparable to those of other areas in Southeastern Brazil. Sampling strategies are discussed.

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          The Nonconcept of Species Diversity: A Critique and Alternative Parameters

          The recent literature on species diversity contains many semantic, conceptual, and technical problems. It is suggested that, as a result of these problems, species diversity has become a meaningless concept, that the term be abandoned, and that ecologists take a more critical approach to species-number relations and rely less on information theoretic and other analogies. As multispecific collections of organisms possess numerous statistical properties which conform to the conventional criteria for diversity indices, such collections are not intrinsically arrangeable in linear order along some diversity scale. Several such properties or "species composition parameters" having straightforward biological interpretations are presented as alternatives to the diversity approach. The two most basic of these are simply ▵1 =[n/n-1][1-Σi (N _i/_N)2 ] =the proportion of potential interindividual encounters which is interspecific (as opposed to intraspecific), assuming every individual in the collection can encounter all other individuals, E(Sn ) = Σi [1-(N-Nin )/(Nn )] =the expected number of species in a sample of n individuals selected at random from a collection containing N individuals, S species, and Ni individuals in the ith species.
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            Marine Benthic Diversity: A Comparative Study

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              The vanishing Brazilian Atlantic forest

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                Author and article information

                Journal
                rbzool
                Revista Brasileira de Zoologia
                Rev. Bras. Zool.
                Sociedade Brasileira de Zoologia (Curitiba, PR, Brazil )
                0101-8175
                1992
                : 9
                : 3-4
                : 223-239
                Affiliations
                [01] Viçosa Minas Gerais orgnameUniversidade Federal de Viçosa orgdiv1Departamento de Biologia Animal Brasil
                Article
                S0101-81751992000200008 S0101-8175(92)00900308
                10.1590/S0101-81751992000200008
                c223680a-abce-4fad-b941-36c7e8ed6969

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 20 June 1993
                : 30 April 1993
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 17
                Product

                SciELO Brazil


                abundance,Apoidea,diversity,neotropics
                abundance, Apoidea, diversity, neotropics

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