Keith S. Brown

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A generic-level phylogeny for the butterfly family Nymphalidae was produced by cladistic analysis of 234 characters from all life stages. The 95 species in the matrix (selected from the 213 studied) represent all important recognized lineages within this family. The analysis showed the taxa grouping into six main lineages. The basal branch is the(More)
Nowadays 37% of Earth’s ice-free land is composed by fragments of natural habitats settled in anthropogenic biomes. Therefore, we have to improve our knowledge about distribution of organisms in remnants and to understand how the matrix affects these distributions. In this way, the present study aims to describe the structure of the butterfly assemblages(More)
1 The Media Bureau Staff Research Paper Series consists of reports and papers prepared by the professional staff of the Media Bureau, often in collaboration with staff in other organizational units within the Commission or external academic researchers, on topics in media economics, media policy, and media industry developments and performance. The Media(More)
There are few papers describing long-term fluctuations and general patterns of temporal diversity in butterfly assemblages in the Neotropical region. The present paper presents a long-term study on the variation in richness and composition of butterflies in a fragment of semi-deciduous forest in Southeastern Brazil, and examines the viability of using(More)
1 1 The Media Bureau Staff Research Paper Series consists of reports and papers prepared by the professional staff of the Media Bureau, often in collaboration with staff in other organizational units within the Commission or external academic researchers, on topics in media economics, media policy, and media industry developments and performance. The Media(More)
In 1996 Congress passed the landmark Telecommunications Act (hereafter " the Act "). The Act, under Section 271, allowed the Regional Bell Operating Companies to offer long distance service to their local customers in exchange for opening their own local networks to local competitors in that state. Using a state-level panel data set we evaluate the effect(More)
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