Seed functional traits as predictors of seedling establishment success in Brazilian tropical forest restoration

IF 1.8 3区环境科学与生态学 Q3 ECOLOGY Biotropica Pub Date : 2024-06-14 DOI:10.1111/btp.13355

Diego Cerveira de Souza, Vera Lex Engel

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Abstract

Several ecological filters in deforested and degraded areas reduce seedling emergence and establishment and hinder ecological restoration by direct seeding. Understanding whether functional traits are related to a species' capacity to overcome these filters and predict their field performance might improve the success of direct seeding techniques for ecological restoration. We assessed eight seed functional traits of tropical tree species, seeking those that best explained their establishment success in direct seeding restoration projects. We analyzed a dataset from 52 studies that tested direct seeding techniques with tree species in Brazil. From each study, we collected the mean establishment percentage for all tree species. Seed mass, cotyledon function, and germination speed were the only functional traits that significantly affected the species establishment percentage in direct seeding restoration projects. Species with larger seeds, storage cotyledons, and faster germination had higher establishment percentages. Choosing species with these functional traits for seed mixes will provide higher establishment percentages and, consequently, improve restoration success by direct seeding techniques.

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预测巴西热带森林恢复中幼苗成活率的种子功能特征

森林砍伐和退化地区的一些生态屏障会减少幼苗的萌发和建立，阻碍直播技术的生态恢复。了解功能特征是否与物种克服这些过滤器的能力有关，并预测其田间表现，可能会提高直接播种技术在生态恢复方面的成功率。我们评估了热带树种的八种种子功能特性，寻找最能解释其在直播恢复项目中建立成功的特性。我们分析了在巴西对树种进行直播技术测试的 52 项研究的数据集。我们从每项研究中收集了所有树种的平均成活率。在直接播种恢复项目中，种子质量、子叶功能和发芽速度是唯一对物种建群率有显著影响的功能特征。种子较大、子叶有储藏功能、发芽速度较快的树种建群率较高。在混合种子中选择具有这些功能特征的物种可提高建植率，从而提高直接播种技术的恢复成功率。

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来源期刊

Biotropica 环境科学-生态学

CiteScore

4.10

自引率

9.50%

发文量

122

审稿时长

8-16 weeks

期刊介绍： Ranked by the ISI index, Biotropica is a highly regarded source of original research on the ecology, conservation and management of all tropical ecosystems, and on the evolution, behavior, and population biology of tropical organisms. Published on behalf of the Association of Tropical Biology and Conservation, the journal''s Special Issues and Special Sections quickly become indispensable references for researchers in the field. Biotropica publishes timely Papers, Reviews, Commentaries, and Insights. Commentaries generate thought-provoking ideas that frequently initiate fruitful debate and discussion, while Reviews provide authoritative and analytical overviews of topics of current conservation or ecological importance. The newly instituted category Insights replaces Short Communications.