Ecological inferences in Orchidaceae species from the Brazilian subtropical Atlantic Forest based on morphological and functional anatomical traits

IF 1.7 4区 生物学 Q3 ECOLOGY Flora Pub Date : 2024-07-05 DOI:10.1016/j.flora.2024.152558
Débora Marcília Moreira, Lizandra Boff, Guilherme de Almeida Caputti Araújo, Shirley Martins Silva
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Abstract

Ecological anatomy studies seek to link structural aspects to environmental pressures, improving knowledge about the occurrence and distribution of species. Orchidaceae is a group with high species richness and ecological diversity, well represented in the Brazilian Atlantic Forest, a biodiversity hotspot. The Iguaçu National Park (ParNa Iguaçu) is an important remnant of the southern Brazilian Atlantic Forest with a high richness of Orchidaceae. Given the family's diversity and the relevance of ecological anatomy studies for interpreting traits associated with the survival of plants in certain environments, we studied 38 species of Orchidaceae from ParNa Iguaçu, seeking to identify possible functional groups. For this, we surveyed 57 leaf morpho-anatomical characters and conducted histochemical and statistical tests. The morpho-anatomical traits group the species into two functional groups, with Cyclopogon congestus emerging isolated. In group A, xeromorphic morphoanatomical characters predominate, and group B combines members with meso/hygromorphic characteristics. We advocate the importance of understanding the ecological behavior of species, especially Orchidaceae, due to their important ecological role, in conservation actions in protected areas. Furthermore, our results highlight the morphological and anatomical diversity of the Orchidaceae found in ParNa Iguaçu, as well contributing to the development of better management practices for these plants, considering the threats posed by the opening of clearings and climate change.

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根据形态和功能解剖特征推断巴西亚热带大西洋森林兰科植物的生态特征
生态解剖学研究试图将结构方面与环境压力联系起来,从而增进对物种出现和分布的了解。兰科植物物种丰富、生态多样,在生物多样性热点地区巴西大西洋森林中占有重要地位。伊瓜苏国家公园(ParNa Iguaçu)是巴西南部大西洋森林的重要遗迹,拥有丰富的兰科植物。鉴于兰科植物的多样性以及生态解剖学研究对于解释植物在特定环境中生存的相关特征的意义,我们研究了伊瓜苏国家公园中的 38 种兰科植物,试图确定可能的功能群。为此,我们调查了 57 个叶片形态解剖特征,并进行了组织化学和统计测试。形态解剖特征将这些物种分为两个功能群,其中 Cyclopogon congestus 独树一帜。在 A 组中,异形形态特征占主导地位,而 B 组则由具有中生/半生形态特征的成员组成。由于兰科植物在生态方面的重要作用,我们认为了解其生态行为对保护区的保护工作非常重要。此外,我们的研究结果突显了在伊瓜苏公园发现的兰科植物在形态和解剖学上的多样性,同时考虑到开辟空地和气候变化带来的威胁,我们的研究结果也有助于为这些植物制定更好的管理方法。
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来源期刊
Flora
Flora 生物-植物科学
CiteScore
3.30
自引率
10.50%
发文量
130
审稿时长
54 days
期刊介绍: FLORA publishes original contributions and review articles on plant structure (morphology and anatomy), plant distribution (incl. phylogeography) and plant functional ecology (ecophysiology, population ecology and population genetics, organismic interactions, community ecology, ecosystem ecology). Manuscripts (both original and review articles) on a single topic can be compiled in Special Issues, for which suggestions are welcome. FLORA, the scientific botanical journal with the longest uninterrupted publication sequence (since 1818), considers manuscripts in the above areas which appeal a broad scientific and international readership. Manuscripts focused on floristics and vegetation science will only be considered if they exceed the pure descriptive approach and have relevance for interpreting plant morphology, distribution or ecology. Manuscripts whose content is restricted to purely systematic and nomenclature matters, to geobotanical aspects of only local interest, to pure applications in agri-, horti- or silviculture and pharmacology, and experimental studies dealing exclusively with investigations at the cellular and subcellular level will not be accepted. Manuscripts dealing with comparative and evolutionary aspects of morphology, anatomy and development are welcome.
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