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trabalhos:abstracts [2021/05/27 01:18]
trabalhos:abstracts [2021/09/17 02:28] (atual)
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 ==== Dissertações de Mestrado ==== ==== Dissertações de Mestrado ====
 +=== BEL, Renan Lucas Siena Del ===
 +**Tree recruitment in a restinga rainforest: Influence of functional neighborhood and soil**
 +**Abstract:​** While biological communities are complex systems in which numerous mechanisms act in different scales and different processes can generate the same pattern, one way to answer questions regarding the assembly of plant communities is to find correlations between environmental patterns indicative of underlying niche processes with the emerging patterns of a community. Because of that, it is essential to keep developing our understanding on how to represent the niche processes and how to better assess the community structure. In this dissertation we investigate how different environmental variables contribute to our understanding of niche processes. In particular, we are interested in how variables of biotic or abiotic nature interact and contribute to the pattern observed in the structure of the community, and whether the integration of these components is important in identifying the processes involved in community assembly. We use the spatially explicit leaf traits distribution of young (recruited in the last 10 years) individuals from a restinga in Ilha do Cardoso to represent the resulting pattern of the assembly processes, as well as data collected in 2009, to rebuild the neighborhood in which these individuals were recruited. We found that different combinations of biotic and abiotic variables explain different leaf traits distributions,​ but when we include the young individuals species as a random factor in our models, our results point for no correlation between environmental variables and leaf traits. Because of these conflicting results we infer that while both biotic and abiotic variables work together as predictors of the structure of the community, they do so via species distribution,​ which is in turn, correlated to an individual'​s leaf traits values. Thus, environmental variables are only informative when we have no information about the identity of the species. Based on our results, we propose that both types of variables (biotic and abiotic) must be used together when trying to assess the niche processes in a community, as both may be complementary and sometimes interact to form a more complete picture. Together our results open some lines of investigation that may further our knowledge over the mechanisms behind the tree community assembly and may inform future work in the field in order to achieve a better resolution in structure analyses.
 === SOUZA, Luanne Caires da Cruz === === SOUZA, Luanne Caires da Cruz ===
trabalhos/abstracts.txt · Última modificação: 2021/09/17 02:28 por jennifervasconcelosjdsv2