Testing for priority effects of tree plantings on natural regeneration in restoration sites in the Brazilian Atlantic Forest

IF 2 3区环境科学与生态学 Q3 ECOLOGY

Applied Vegetation Science Pub Date : 2024-02-13 DOI:10.1111/avsc.12768

Isabel Cristina Restrepo-Carvajal, Adriana Pellegrini Manhães, Laura Cristina Pantaleão, Luiz Fernando Duarte de Moraes, Dulce Gilson Mantuano, Jerônimo Boelsums Barreto Sansevero

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引用次数: 0

Abstract

Questions

Our study aims to understand whether priority effects or environmental filters drive community assembly in 20-year-old restoration areas in the Brazilian Atlantic Forest. For this, we investigated the following questions: (i) does the initial composition of planted communities (distinct combination of ecological groups) affect the natural regeneration regarding functional composition (mean trait values), diversity (functional and taxonomic), and vegetation structure? (ii) Which functional traits of the planted community have the potential to promote or constrain natural regeneration?

Location

The study was carried out in the Poço das Antas Biological Reserve, located in Rio de Janeiro state, Brazil, in a stand of 2.16 hectares with an experimental restoration design established in the year 2000 to test tree species performance of different ecological groups.

Methods

In 2020, we sampled trees with a diameter at breast height greater than 2.5 cm in 20 m × 20 m plots with four replicates per treatment and measured leaf, wood, and seed functional traits. Then, we estimated the diversity (functional and taxonomic richness), functional composition, and vegetation structure of natural regeneration, compared them between treatments, and tested which traits of the planted community influenced them.

Results

Natural regeneration exhibited significant differences between treatments, particularly regarding the diversity dimension (functional and taxonomic) and vegetation structure (basal area and abundance). Wood density, leaf phosphorus content, and leaf C:N ratio of the planted species were associated with natural regeneration (functional composition, diversity, and vegetation structure).

Conclusions

Priority effects in conservative tree planting communities affect natural regeneration, while functional convergence observed in acquisitive planting communities suggests the role of environmental filtering. Communities with low wood density, low C:N ratio, and high specific leaf area, which characterize an acquisitive resource-use strategy, exhibited higher functional and taxonomic diversity of natural regeneration, leading to the desired trajectory in ecological restoration.

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测试植树对巴西大西洋森林恢复地点自然再生的优先影响

问题我们的研究旨在了解在巴西大西洋森林有 20 年历史的恢复区中，是优先效应还是环境过滤器驱动了群落的组合。为此，我们研究了以下问题：(i) 种植群落的初始组成（生态群落的独特组合）是否会在功能组成（平均性状值）、多样性（功能和分类）以及植被结构方面影响自然再生？(ii) 种植群落的哪些功能特征有可能促进或限制自然再生？地点研究在巴西里约热内卢州的波索达斯安塔斯（Poço das Antas）生物保护区进行，该保护区占地 2.16 公顷，于 2000 年进行了实验性恢复设计，以测试不同生态群落的树种表现。方法 2020 年，我们对胸径大于 2.5 厘米的树木进行了采样，采样点为 20 米×20 米的地块，每个处理有四个重复点，并对叶片、木材和种子的功能特性进行了测量。然后，我们估算了天然更新的多样性（功能和分类丰富度）、功能组成和植被结构，比较了不同处理之间的差异，并测试了种植群落的哪些特征会影响它们。结果天然更新在不同处理之间表现出显著差异，尤其是在多样性维度（功能和分类）和植被结构（基部面积和丰度）方面。种植物种的木质密度、叶片磷含量和叶片 C:N 比率与自然再生（功能组成、多样性和植被结构）有关。结论保守型植树群落中的优先效应会影响自然再生，而在获取型植树群落中观察到的功能趋同则表明了环境过滤的作用。低木质密度、低碳氮比和高比叶面积的群落是获取型资源利用策略的特征，它们表现出更高的自然再生功能和分类多样性，从而实现了生态恢复的理想轨迹。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Vegetation Science 环境科学-林学

CiteScore

6.00

自引率

10.70%

发文量

审稿时长

3 months

期刊介绍： Applied Vegetation Science focuses on community-level topics relevant to human interaction with vegetation, including global change, nature conservation, nature management, restoration of plant communities and of natural habitats, and the planning of semi-natural and urban landscapes. Vegetation survey, modelling and remote-sensing applications are welcome. Papers on vegetation science which do not fit to this scope (do not have an applied aspect and are not vegetation survey) should be directed to our associate journal, the Journal of Vegetation Science. Both journals publish papers on the ecology of a single species only if it plays a key role in structuring plant communities.