Diversity patterns along ecological succession in tropical dry forests: A multi-taxonomic approach

Evaluating the diversity of multiple taxa is fundamental to understand community assembly and to assess the integrity and functionality of tropical secondary forests. In this study, we analyzed the natural regeneration of tropical dry forests (TDFs) in three regions of Brazil using Hill-Simpson diversity, abundance and β-diversity of trees and five groups of insects (herbivores, fruit-feeding butterflies, ants, culicid mosquitoes and dung beetles). Sampling was conducted in 39 0.1 ha plots using a chronosequence approach (13 plots in early, intermediate and old-growth forests). We evaluated the contribution of three different levels to γ-diversity: α (within plots), β¹ (among plots) and β² (among successional stages), and further determined the relative importance of turnover (species replacement) and nestedness (differences in species number among sites) to β². Our results showed that, unexpectedly, the Hill-Simpson diversity was consistently higher in early than old-growth stages for ..., Methods - Tree Sampling
From January to May 2012, 39 plots of 50 x 20 m were delimited (9 in Serra do Cipó, 15 in North MG and 15 in Patos), with 13 plots in each successional stage. Whenever possible, plots from different stages were interspersed, with a minimum distance of 200 m among plots (Figure S1). The floristic survey was carried out only once in the same period. In each plot, all living trees with diameter at breast height (DBH = 1.30 m from the ground) ≥ 5 cm were identified and measured. Height was visually estimated with the aid of a 2 m stick as a reference. These inventoried individuals were marked and numbered with aluminum tags and identified according to the Brazilian Flora project (Brazil Flora Group 2021). Voucher specimens were deposited in the Herbarium of the Federal University of Pernambuco (UFPE) and in the Herbarium Montes Claros (MCMG) at the State University of Montes Claros (UNIMONTES).
Methods - Fauna Sampling
Herbivorous insects
Herbivorous insects associat..., , # DIVERSITY PATTERNS ALONG ECOLOGICAL SUCCESSION IN TROPICAL DRY FORESTS: A MULTI-TAXONOMIC APPROACH

This dataset contains the abundance of each of the species collected per plot (50 x 20 m) for six different taxa: butterflies, ants, mosquitoes, herbivorous insects, dung beetles and trees in tropical dry forests in three regions: North of MG (15 plots, three sites), Serra do Cipó (9 plots, one site) and Patos (15 plots, one site). For insects, multiple samples (traps) were used per plot. For trees, the plot is the sampling unit. In each region, plots were equally distributed into three successional stages: early, intermediate and old-growth.

## Description of the data and file structure

The dataset contains a column for “Plot code” that indicates the region, successional stage and plot number. The column “Region” has three categories: North of MG, Patos and Serra do Cipó. In each region, there are three successional stages- Early, Intermediate and Late – which are indicated in anot...

### 热带旱生林沿生态演替的多样性格局：多类群研究方法
评估多类群的多样性，是理解群落构建、评估热带次生林完整性与功能的核心基础。本研究针对巴西三个区域的热带旱生林（TDFs）自然更新状况展开分析，采用Hill-Simpson多样性（Hill-Simpson diversity）、多度与β多样性（β-diversity）指标，分别探究树木以及五类昆虫类群——植食性昆虫、食果蝴蝶、蚂蚁、库蚊科蚊子以及粪金龟子——的相关特征。本研究采用时间序列法，在39块面积为0.1公顷的样地中开展采样，其中早期、中期与老龄林样地各13块。本研究评估了三个层级对γ多样性（γ-diversity）的贡献：α多样性（α，样地内）、β¹多样性（β¹，样地间）以及β²多样性（β²，演替阶段间），并进一步明确了周转（物种替代）与嵌套性（样地间物种数量差异）对β²多样性的相对重要性。研究结果显示，令人意外的是，早期林分的Hill-Simpson多样性整体高于老龄林分，[后文截断]。
## 方法——树木采样
2012年1月至5月，共划定39块50×20米的样地（塞拉多西波9块、北米纳斯吉拉斯州15块、帕托斯15块），各演替阶段样地各13块。不同演替阶段的样地尽可能交错分布，样地间最小间距为200米（图S1）。植物区系调查于同期仅开展一次。在每块样地中，对所有胸高直径（DBH，diameter at breast height，距地面1.30米处）≥5厘米的活立木进行物种鉴定与尺寸测量。树高以2米长杆为参照，通过目视估算得出。所有被调查的个体均用铝制标签标记并编号，依据《巴西植物志》项目（Brazil Flora Group 2021）进行物种鉴定。凭证标本分别存放于伯南布哥联邦大学标本馆（UFPE）以及蒙蒂斯克拉鲁斯州立大学（UNIMONTES）的蒙蒂斯克拉鲁斯标本馆（MCMG）。
## 方法——动物采样：植食性昆虫
植食性昆虫相关采样[后文截断]
# 热带旱生林沿生态演替的多样性格局：多类群研究方法
本数据集包含巴西三个区域热带旱生林内，6个不同类群（蝴蝶、蚂蚁、蚊子、植食性昆虫、粪金龟子与树木）在每块50×20米样地中的物种多度数据。三个区域分别为：北米纳斯吉拉斯州（North of MG，15块样地，含3个采样点）、塞拉多西波（Serra do Cipó，9块样地，1个采样点）以及帕托斯（Patos，15块样地，1个采样点）。针对昆虫类群，每块样地设置多个采样陷阱以获取样本；针对树木类群，样地即为采样单元。每个区域的样地均均等分配至三个演替阶段：早期、中期与老龄林。
## 数据与文件结构说明
数据集包含"样地编码"列，用于标注样地所属区域、演替阶段与样地编号；"区域"列包含三个分类：北米纳斯吉拉斯州、帕托斯与塞拉多西波。每个区域均设有三个演替阶段——早期、中期与晚期——相关信息将在[anot...，后文截断]中说明。