03194naa a2200169 a 450000100080000000500110000800800410001910000160006024501060007626000090018252024420019170000190263370000150265270000160266770000200268377303210270313150452008-10-06       2008    bl uuuu     u00u1 u    #d1 aHOPP, P. W.  aRecovery of leaf-litter Beetles during Forest Regeneration in the Atlantic Forest of Southern Brazil.  c2008  aAs deforestation of neotropical primary forest continues the proportion of secondary forests of total forest area increases. Therefor, the interest in secondary forest fragments for management and conservation issues grows. The project SOLOBIOMA evaluate the ecosystematic quality of secondary forests in the coastal submontane forest of Paraná state, southern Brazil. The objective of this study is a diversity survey of litter-dwelling beetle assemblages as part of the soil invertebrate community which are recognised as important components of biodiversity and an evaluation of the recovery process during forest regeneration . Spatial changes in species richness, abundance and assemblage structure of e.g. carabids and curculionids were studied using three replicate chronosequences. Three regeneration stages of secondary forest ranging in age from 4 to 55 years after anthropogenic disturbance - here totally deforestation to pasture - as well as old-growth forest (&gt100 years, only some logging activities known) were included, making a total of 21 sites. Each succession stage was selected on two soil types (cambisol and gleysol) to estimate the influence of soil associated environmental conditions on the distribution pattern of leaf-litter beetles. Between July and June 2003 twenty 1m2 leaf-litter samples were taken at each study site and were treated using the Winkler technique. A total of 3742 beetles were extracted belonging to 37 families. 80 % of all individuals were staphylinids (22% plus 30% Pselaphinae), carabids (10.5%), scydmaenids (9%) and curculionids (8.5%). Carabids and curculionids were determined to 48 morphospecies. Uni- and mulivariate statistical analysis revealed high increase of species richness and significant changes in species composition towards old-growth forest conditions during secondary succession on cambisol. But there were no significant differences in species richness and species composition between the oldest secondary forest stage and old-growth forest. On gleysol a weaker increase of species richness with increasing forest age and clearly lower species richness than in the corresponding stages on cambisol were observed. Species composition on gleysol changed in-consistently during forest regeneration. These first results suggest a fast recovery of the leaf-litter beetle community during natural forest regeneration at least on non-temporarily flooded forest areas.1 aOTTERMANNS, R.1 aHÖFER, H.1 aMARQUES, R.1 aROB-NICKOLL, M.  tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.