01072nas a2200241   4500008004100000245010600041210006900147260000800216300001200224490000700236520038500243653001700628653002400645653001400669653001800683653001200701653001300713653003100726653001100757653001100768100001700779856003400796       1998                        eng d00aLog-normal distribution of species abundances is not a universal indicator of rain forest disturbance0 aLognormal distribution of species abundances is not a universal   cJun  a454-4570 v353 a1. The fit to log-normal distribution of species abundances of grasshoppers, ladybird beetles, tortoise beetles and dung beetles and forest floor vegetation in unlogged and selectively felled sites in Kibale Forest, western Uganda was analysed. It was shown that the fit to log-normal distribution cannot be used as a straightforward universal indicator of rainforest disturbance.10abioindicator10acommunity structure10adiversity10akibale forest10alogging10apatterns10atropical forest management10aUganda10avirgin1 aNummelin, M.  u<Go to ISI>://00007610020000902216nas a2200169   4500008004100000245010900041210006900150260000800219300001400227490000700241520169000248653001701938100002401955700001601979700001701995856003402012       2004                        eng d00aEffects of a hydropower plant on Coleopteran diversity and abundance in the Udzungwa Mountains, Tanzania0 aEffects of a hydropower plant on Coleopteran diversity and abund  cJul  a1453-14640 v133 aThe effects of river flow diversion on biodiversity were assessed using Coleoptera as an indicator group in three habitats of the Kihansi Gorge (Udzungwa Mountains, Tanzania), before and after commissioning of a hydropower plant. Data collected using sweep netting and pitfall traps showed that the effect of diversion of the river flow was site-specific, affecting particularly the spray habitat. Rarefaction analysis of both sweep netting and pitfall samples indicated that the expected richness of Coleoptera declined significantly in all habitats after commissioning of the power plant. Sweep netting and pitfall samples showed that the highest Shannon-Wiener diversity index value before the diversion of the river flow was in the spray zone, but the index value decreased after diversion. Changes in the other two habitats were less prominent. Analysis of variance using diversity index values from five pitfall samples in each habitat type before and after commissioning indicated that there were no statistically significant differences in the diversity index between the two sampling periods or among the three habitat types. Renkonen's similarity index between habitats showed that pitfall samples had higher similarity (greater than or equal to87%) than did samples from sweep netting (less than or equal to69%). It is suggested that for mitigation purposes, artificial spray systems, which have been installed in other wetlands of the Kihansi Gorge, also be installed to cover the whole Lower Wetland in which this study was undertaken. In order to maintain overall biodiversity in the Kihansi Gorge, it is suggested that the ecosystem conservation approach be prioritised.10aDung beetles1 aZilihona, I., J. E.1 aNiemela, J.1 aNummelin, M.  u<Go to ISI>://000220411800003