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 larger CBH The sampling units were not grouped within the same condition. Anetium
 citrifolium was an indicator species of the interior of fragments in the pastures matrix.
+=== SALLES, Maysa da Costa Lima ===
+**Linear edge effects of different ages on the composition and structure of the shrub-tree community in the Atlantic Forest**
+**Abstract:** Forest fragmentation reduces the total area covered by the forest and exposes the plant
+community to edge effects, even if the edge is a linear opening. Beside, environmental
+factors associated to disturbances, such as fragmentation and topographical features, are
+some of the factors that determine community change. Hence, the aim of this study
+consisted in evaluating the effects of linear edges with different ages (30 and 200 years)
+of and the influence of environmental factors associated with them on the plant
+community of two forest layers of an Atlantic rainforest area located in the state of Rio
+de Janeiro, Brazil. Data concerning community structure and composition were
+compared between the different locations within the studied area, from which both slope
+and altitudinal interactions were evaluated. We suggested that the plant community of
+the Tinguá Reserve is under edge effects, but that these are less intense given that the
+impacts have been buffered by the formation, along the years, of a secondary vegetation
+layer, associated with an adjacent forest matrix and the absence of stochastic events.
+The older edge (200 years) had a lower richness and a different plant composition from
+the others locations. It suggests that the tree and shrub community may be under the
+influence of permanent damages from edge effects. The more recent edge (30 years)
+could be in a period of transition which the early successional trees, that reproduced
+immediately after the edge creation may reach the adult stage, near by the other tree
+species, and they constitute the upper stratum of the forest. The altitudinal and slope
+variables influence in some way the floristic composition, but other associated variables
+must be considered for a more precise evaluation.
 === PANNUTI, Márcia Ione da Rocha ===
@@ Linha 286: / Linha 312: @@
 **Abstract:** Niche and dispersal limitation are important coexistence mechanisms that can spatially structure tree communities. We aimed to verify the influence of environmental heterogeneity in the relative importance of those processes. We used data from ForestGEO plots with different environmental heterogeneity (Colombia-CO < Brazil-BR < Ecuador-EQ). We selected the most plausible of four concurrent spatial models: Randomness (CSR), Niche (NH), Dispersal Limitation (DL), and both (NH+DL). BR e EQ didn't diverge in the probability of model selection, having 85,6% and 83% of niche models selected (NH and NH+DL), while in CO only 57,5% were observed. The proportion of no model selected was four times higher in CO than in BR and EQ. We attribute these differences to CO's lesser environmental heterogeneity and conclude that it influences the relative importance of processes. Plots with a higher proportion of coexistence mechanisms are also significantly more diverse (BR and EQ > CO).
+=== ROSA, Matheus Guthierris Bitencourt ===
+**Phylogenetic structure of seedling communities in Restinga forests with different environmental conditions**
+**Abstract:** Ecological communities often differ in species richness, composition and abundance,
+reflecting different assembly processes. Niche-determined processes and neutral
+processes may interact in the role of structuring different communities. Assessing the
+phylogenetic structure of communities should allow us to infer niche-related
+processes with respect to neutral processes, if the phylogenetic distances between
+co-ocurring species reflects niche differences. On one hand, if species tolerance to
+abiotic conditions are phyllogenetically conserved, intense environmental filtering is
+expected to promote community assemblages more phyllogenetically related than
+chance. On the other hand, negative interactions between neighbouring species can
+limit niche similarity in local assembly, if species interactions, such as competition for
+limited resources, is stronger between species that share the niche of a common
+ancestor. In the stage of seedlings, competition may not be able to impose a non-
+random signal on the phylogenetic structure of the entire habitat, but it may drive the
+assembly of local neighbourhoods. We therefore intend to infer the relative
+importance of different assembly processes by comparing the phylogenetic structure
+of seedlings communities in different Restinga forest physiognomies from the Parque
+Estadual da Ilha do Cardoso (Restinga Alta Alagada - RAA, Restinga Alta Drenada -
+RAD e Restinga Baixa – RB), at the scale of the entire habitat and the scale of local
+neighbourhoods. We describe phylogenetic structure of the entire habitat and local
+neighborhoods by calculating the mean pairwise phylogenetic distances between co-
+occuring species, both weighted and unweighted by species abundances. At the
+scale of the entire habitat, we ask if species composition at each forest type differs
+from null expectations, we test this by comparing the observed MPD value for each
+Restinga forest with a null distribution of communities generated by drawing species
+by chance from an adult tree species pool. We found that different Restinga forests
+show random phylogenetic structure at this scale. And, at the scale of local
+neighbourhoods, we ask if the distribution of MPD per triad differs between Restinga
+forests physiognomies, by comparing the F statistics from a simple Analysis of
+Variance with the distribution of F generated by permutations of MPD between
+habitats. We then conducted a post-hoc test to evaluate the absolute differences
+between groups of neighbourhoods in different Restinga forest types. We found that
+the distribution of MPD per triad in Restinga Baixa differs from the distribution of both
+Restinga Alta forests, but the Restinga Alta Alagada (flooded habitat) and Restinga
+Alta Drenada (drained habitat) don’t differ from each other. Our results therefore
+suggest that neutral processes are more important than niche processes to
+determine the assembly of seedlings communities at the entire habitat scale,
+however, niche-related processes, such as habitat filtering and competition may have
+a secondary role by determining local differences in the phylogenetic structure of
+neighbouring species.
+=== DIAS, Julia de Freitas ===
+**Survey of Seedling Production of Restinga Species in Nurseries State of São Paulo: Implications for ecological restoration**
+**Resumo:** To be viable to carry out restoration projects following the scientific statements and
+legislation is essential that there is availability of seedlings in nurseries with high species and
+genetic diversity. In order to evaluate the current availability of seedlings, production capacity
+and the main constraints to the production of a high diversity of restinga (white sand coastal
+vegetation) species, a study was conducted with nurseries producing seedlings of restinga
+species in the state of São Paulo. In total, 122 nurseries and 41 counties were contacted,
+resulting in only six nurseries producing seedlings from areas of restinga. The definition of
+the profile of resting seedlings production in these six nurseries was done through
+questionnaires technical and administrative. Among the main results of this survey, we can
+highlight the small number of seedlings of restinga species produced by the north coast
+nurseries, the difficulties in obtaining seeds mainly related to the process of seed collection,
+the disarticulation of the sectors involved in the production of seedlings of restinga species,
+the tiny share of the municipalities in seedling production and the perception of the producers
+of changes in the fruit phenology of the restinga species in their collection areas. This study
+highlights the current shortage of seedling of restinga species and should be useful as a tool to
+reveal the nurseries working in this ecosystem, and to improve the contact between them and
+the restoration planning groups.
+=== PEREIRA, Thiago ===
+**Effects of light quality on seed germination of Myrtaceae species from restinga of Cardoso Island**
+**Abstract:** The Myrtaceae family is one of the most ecologically important families, mainly in the Atlantic forest, being the dominant family in diverse tropical forests. Specifically in 3restinga" (coastal sandy plains) areas, Myrtaceae is noted for high species richness, being among the trees, often the most diverse. However there are few studies about the ecology and physiology of this family. Knowledge about the conditions for seed germination, in the case of Myrtaceae species, may increase the success in producing of seedlings in nurseries for use in forest restoration The analysis of light requirements for germination of the Myrtaceae species provides data that can be useful both in evolutionary studies about the family Myrtaceae, as to indicate the correct phase of succession to use of these species of Myrtaceae occurring in the Ilha do Cardoso in restoration projects in tropical areas. The germination of seeds of three species, //Eugenia umbelliflora//, //Myrcia multiflora// and //Blepharocalyx salicifolius//, were analyzed in a white light treatment and in the control (dark). An analysis of seed germination under distinct Red/Far red ratios was also performed for the species //Eugenia umbelliflora//. The seeds of the three species germinated in the presence of light and in the dark, indicating that the seeds have great environmental plasticity about light and can occupy different habitats. //E. umbelliflora// and //B. salicifolius// probably have their germination controlled by phytochrome A (phyA), using a Very Low Fluence Response (VLFR). The species //M. multiflora// show a higher germination rate under white light, which could indicates positive photoblastic seeds, but this classification requires complementary studies. Tests at different levels of R / FR for //E. umbelliflora// reinforce that this species has wide environmental plasticity, with the ability to germinate both in treefall gaps and under the canopy.
+=== PEREIRA, Nathália Helena Azevedo ===
+**Spatial distribution of terrestrial tank bromeliads in restinga: causes and consequences**
+**Abstract:** The plants’ spatial distribution pattern is the result of biotic and abiotic factors, from space
+competition to nutrients, light and water availability. To analyze the factors that vary spatially, light incidence and edaphic characteristics for example, is key to comprehend the influence they could have over the space distribution of the vegetation species in natural environments. This study aimed to analyze the possible factors that determine the distribution of terrestrial bromeliads, a group of plants that is very abundant in restinga, dominating the herbaceous layer on large tracts. On the other hand, the presence of bromeliads in the herbaceous layer can hinder the establishment of arboreal species and affect the vegetation structure. Thus, the consequences of the presence of bromeliads over the vegetation structure were also analyzed in this study. The study was conducted in a patch of restinga forest, at the “Parque Estadual da Ilha do Cardoso”, south coast of São Paulo state. Were sampled 5,76 ha, in 144 contiguous shares of 20 x 20m, in wich was registered the total number of rosettes of terrestrial bromeliads, as well as the percentage of coverage of the ground of each species. Were found seven terrestrial bromeliads species: //Bromelia antiacantha//, //Canistrum cyanthiforme//, //Nidularium innocentii//, //Nidularium procerum//, //Quesnelia arvensis//, //Vriesea carinata// e //Vriesea ensiformis//, and about 50% dos 5,76ha of the forest of restinga sampled were covered by bromeliads. The species that presented the greatest number of rosetas and the biggest coverage area were //N. procerum//, //N. innocentii// e //C. cyanthiforme//. The results indicate that the terrestrial bromeliads distribution is positively related with the canopy opening and that the growing of the porcentage of thick sand between 5 and 20m underground is related to the decrease of the number of bromeliads per share. The variety of individual arboreal adults decreased with the rising of the number of rosetas on a share. It wasn't noticed any relationship between the presence of bromeliads and the abundance of adult arboreal species on the shares, what suggests that the bromeliad don't interfere the structure of the forests dossel and seems to be using other space than the ocuppied by the arboreal species.

Laboratório de Ecologia de Florestas Tropicais

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