Sun, 27 Jul 2008 06:04:49 BST CiteULike: Tag neotropical http://www.citeulike.org/tag/neotropical CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/group/3535/article/2066531 <i>Lichenologist, Vol. 31, No. 3. (1999), pp. 269-289.</i><br /><br />A community ecology approach using an association of species test and a principal component analysis resulted in the recognition of two major and two minor foliicolous lichen communities in a neotropical rainforest. The major communities are governed by microclimatic factors, one characteristic of the shady understorey and the other confined to light gaps. The minor communities are due to subtle phorophyte preferences towards palm and dicot leaves. The shady understorey community is dominated by the families Arthoniaceae, Opegraphaceae, Trichotheliaceae and Pilocarpaceae, which predominantly have Phycopeltis as their phycobiont, thin thalli, abundant sexual reproduction, small ascospores produced in high numbers, and pycnidial conidiomata. The light-gap community is mainly composed of the families Gomphillaceae and Ectolechiaceae, with Trebouxia as their phycobiont, thickly crystalline or whitish, dispersed thalli, frequent asexual reproduction, large ascospores produced in low numbers, and specialized campylidia and hyphophores as conidiomata. Phycobiont, thallus structure, and the mode of reproduction are considered as adaptations to different microsites, whereas the shape and size of ascospores and conidia seem to be of less importance. The foliicolous lichen communities reflect the spatial and temporal structure of the forest, in particular the continuity of the shady understorey in comparison to the discontinuity of the light gaps. While the formation of the shady understorey community follows more deterministic patterns, the light-gap community exhibits high stochasticity. Ecology of foliicolous lichens at the 'Botarrama' trail (Costa Rica), a neotropical rainforest. IV. Species associations, their salient features and their dependence on environmental variables R Lu?cking doi:10.1006/lich.1998.0186 Lichenologist, Vol. 31, No. 3. (1999), pp. 269-289. 2007-12-06T11:41:32-00:00 1999 Lichenologist 31 3 269 289 costa-rica ecology foliicolous lichen microclimate neotropical http://www.citeulike.org/user/ants/article/838963 <i>Ecological Entomology, Vol. 31, No. 5. (October 2006), pp. 403-410.</i> Limitation of nesting resources for ants in Colombian forests and coffee plantations Inge Armbrecht Ivette Perfecto Emily Silverman doi:10.1111/j.1365-2311.2006.00802.x Ecological Entomology, Vol. 31, No. 5. (October 2006), pp. 403-410. 2006-09-11T16:27:23-00:00 2006 Ecological Entomology 0307-6946 31 5 403 410 Blackwell Publishing ants formicidae neotropical