The objective of this study was to generate information relative to the allele distribution and dynamics within and among populations of Araucaria angustifolia, a naturally-occurring conifer in the south of Brazil, being known popularly as “pinheiro-do-Paraná”, “araucaria” or pine tree. In order to elucidate the levels and the distribution of the genetic variability, the population’s genetic st...

Sandflies were collected in the base of tree-trunks in the seasons of high and least rainfall in the Ducke Forest Reserve, near Manaus in the State of Amazonas. Lutzomyia umbratilis was the most abundant sandfly species. Caryocar villosum, Chrysophyllum amazonicum, Dinizia excelsa, Eschweilera atropetiolata and Parkia multijuga were the tree species on which most sandflies were collected and re...

A new stilbene, 4-[(2"E)-7"-hydroxy-3",7"-dimethyloct-2"-enyl]-2',3,4',5-tetrahydroxy-trans-stilbene (1), and the known compound chlorophorin (2) were isolated from the heartwood of Chlorophora excelsa. Both 1 and 2 showed tyrosinase inhibitory activity with IC(50) values of 96 and 1.3 microM, respectively.

Within a single site in the Kohala Forest Reserve, Hawai`i, we examined the composition and diversity of soil microbial communities under four introduced (Cryptomeria japonica, Casuarina equisetifolia, Araucaria columnaris, and Eucalyptus sp.) and one native (Metrosideros polymorpha) canopy tree species, as well as pasture. Terminal restriction fragment length polymorphism (T-RFLP) analysis of ...

The genus Oniella Matsumura 1912 is reviewed and seven species from China are recognized, including a new species, O. shaanxiana sp. nov., a new synonym, O. flavomarginata, syn. nov. and a new combination, O. albula (Cai & Shen, 1998) n. comb. transferred from Sophonia. O. excelsa (Melichar) is removed from this genus. The seven species are described and illustrated in detail, and a key to all ...

The Orongorongo Valley is located 18 km east of Wellington (4121’S, 17458’E). The study area of 4.4 ha is located at about 100 m a.s.l., and comprises forest with scattered emergent Metrosideros robusta and Dacrydium cupressinum over a canopy of Elaeocarpus dentatus, Laurelia novae-zelandiae, Melicytus ramiflorus, Hedycarya arborea, Knightia excelsa, Weinmannia racemosa, Schefflera digitata and...