DOI: 10.5281/zenodo.3746325
title: Data of Cerrado´s Tree Crown Networks

description: Information about the architecture of the woody crown obtained through representations in the form of a network (graphs). The essential components of these networks are nodes and connectors. Decomposition, topology, and properties calculated for analyzing the strategies of crown airspace acquisition in any environment. The networks represented in a two-dimensional space follow the general laws of network theory, but with specific meanings for the crown architecture. Thus, a dataset generated and included information about five individuals from fifteen tree species growing under the natural conditions of the Cerrado vegetation. We presented the types and the total number of nodes. Initial node (IN) was the node that starts the network, regular node (RN) was the vast majority of nodes with three connectors. Emission node (EN) showed four connectors, and the final node (FN) was the last in leafy axes. There are data about the distances between the initial and final nodes (IN-IF), and initial and emission nodes (IN-IE). Decomposition and topological combinations permitted to disclose the properties (navigability, vulnerability, symmetry, and complexity). The data presented can be used by researchers from all over the world in works that investigate the behavior of networks in biological systems, in addition to the specific applications of studies of functional ecology and plant ecophysiology. We obtained the data directly from a skeletonized representation of the woody crown in a two-dimensional space in the form of a drawing. Subsequently, the nodes counted, and their proportions (decomposition), the distances between the different types of nodes (topology), and the values of network properties (the combination of decomposition and topology) obtained.
description: The acquisition of the airspace by Woody Crown Networks (WCN) occurred by branching edifying nodes (NO) networked by connectors (CO). It was possible to represent the WCN in a two-dimensional space by showing the relative positions of all NO and CO. Each individual per specie (5 individuals, 15 species) has its crown network drowned. In the drawing representing the WCN, we can identify the relative position and how many CO each NO has in all leafy axes. The NO with three CO was the regular nodes (RN). Initial Node (IN) is the first NO of the WCN. The final NO (FN) is the last in leafy axes, and Emission Nodes (EN) were nodes with more three connectors. The number of connectors between types of NO represents the distance that separates them in the WCN. The length IN-FN determined by the number of CO between IN and FN. The distance between IN and EN (IN-EN) by counting the number of connectors between the corresponding NO. The topology was captured by distances and properties (navigability, vulnerability, complexity, and symmetry) by combining decomposition and topology.
description: {"references": ["Souza, J. P., Prado, C. H. B., Albino, A. L. S., Damascos, M. A., & Souza, G. M. (2011). Network analysis of tree crowns distinguishes functional groups of Cerrado species. Plant ecology, 212(1), 11-19."]}