Regras de montagem: do estado da arte a vegetação de afloramentos rochosos na Serra da Jiboia

Abstract

Ecology is a branch of science that investigates organisms, their relationships between themselves and the environment in which they live. One of the biggest questions in the study of the ecology of communities is how they are formed and whether in this formation process, species that settle there arrived simply by chance or if they are subjected to some rule, in this case the assembly rules. One of the means used to empirical measurements of the assembly rule is the null model. Its use is a important tool to highlight whether or not communities have the rules of assembly. In this context, this work has the general objective of elucidating the state of art about assembly rules and testing these rules through the use of null models in vegetation of rocky outcrops of Serra da Jiboia. In this way, it was a scientometrics search in the international data collection of the ISI website - Web of Science, the use of the following keyword: “assembly rule”. The articles found were separated into two categories, one global and one for Brazil and the works were quantified in different topics. We note that the assembly rules in communities is an area still of research interest, both globally, nationally and there is a tendency to study assembly rules in forest ecosystems with plant communities. Finally, practical work is the majority in relation to theoretical and tooling. To evaluate species co-occurrence patterns in plant communities on rocky outcrops we use four indices: the Checker, the C-score, the V-ratio and the COMBO. They were not significant results were found for the C-score and V-ratio indices. The Checker was significant only for three simulations, but these are vulnerable to false positive. The COMBO index proved to be significant, which allows us to state that the synthesis of these communities is guided by combinations of species, possibly due to the great influence of facilitating species in places with adverse conditions.