Guilherme Diego Fockink, Betina Camargo, Djoney Procknow, Emily Talita Pereira de Aguiar, Pedro Joel Silva da Silva Filho, Ricardo Bergamo Schenato, Ana Paula Moreira Rovedder
{"title":"护理树在公园草地植物群落中的作用：以巴西南部为例","authors":"Guilherme Diego Fockink, Betina Camargo, Djoney Procknow, Emily Talita Pereira de Aguiar, Pedro Joel Silva da Silva Filho, Ricardo Bergamo Schenato, Ana Paula Moreira Rovedder","doi":"10.1111/avsc.70027","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aims</h3>\n \n <p>Understanding the mechanisms that act in the assembly of the grassy-woody plant community in park grassland is important to define conservation, management, and restoration strategies. We investigated the facilitation of three nurse tree species typical of park grassland (<i>Prosopis affinis</i>, <i>Prosopis nigra,</i> and <i>Aspidosperma quebracho-blanco</i>) on the composition and structure of the plant community and the mechanisms through which these species facilitate the establishment of other species under their canopies.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>Park grasslands of Rio Grande do Sul, Brazil.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>We carried out a paired vegetation survey in 30 circular plots (under trees and in open areas) in park grassland isolated from grazing, located in the Espinilho State Park, Rio Grande do Sul, southern Brazil. We evaluated attributes related to the composition and structure, dimensions of each tree, and environmental variables, aiming to understand the mechanisms of plant community assembly.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions. Consequently, they provide microhabitat for herbaceous and woody plants. These tree species are decisive in the assembly of the plant community in park grassland, and their conservation is fundamental for the maintenance of associated species. However, they can act as nuclei for woody plants typical of forests and possibly contribute to forest expansion in the long term.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Given the nursing role they play, these tree species demonstrate potential for application in ecological restoration, as well as promoting the conservation of local biodiversity in park grasslands.</p>\n </section>\n </div>","PeriodicalId":55494,"journal":{"name":"Applied Vegetation Science","volume":"28 2","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/avsc.70027","citationCount":"0","resultStr":"{\"title\":\"The Role of Nurse Trees in the Plant Community of Park Grassland: A Case Study in Southern Brazil\",\"authors\":\"Guilherme Diego Fockink, Betina Camargo, Djoney Procknow, Emily Talita Pereira de Aguiar, Pedro Joel Silva da Silva Filho, Ricardo Bergamo Schenato, Ana Paula Moreira Rovedder\",\"doi\":\"10.1111/avsc.70027\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Aims</h3>\\n \\n <p>Understanding the mechanisms that act in the assembly of the grassy-woody plant community in park grassland is important to define conservation, management, and restoration strategies. We investigated the facilitation of three nurse tree species typical of park grassland (<i>Prosopis affinis</i>, <i>Prosopis nigra,</i> and <i>Aspidosperma quebracho-blanco</i>) on the composition and structure of the plant community and the mechanisms through which these species facilitate the establishment of other species under their canopies.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Location</h3>\\n \\n <p>Park grasslands of Rio Grande do Sul, Brazil.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>We carried out a paired vegetation survey in 30 circular plots (under trees and in open areas) in park grassland isolated from grazing, located in the Espinilho State Park, Rio Grande do Sul, southern Brazil. We evaluated attributes related to the composition and structure, dimensions of each tree, and environmental variables, aiming to understand the mechanisms of plant community assembly.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions. Consequently, they provide microhabitat for herbaceous and woody plants. These tree species are decisive in the assembly of the plant community in park grassland, and their conservation is fundamental for the maintenance of associated species. 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引用次数: 0
摘要
目的了解公园草地草木本植物群落聚集的机制对制定保护、管理和恢复策略具有重要意义。研究了3种典型的公园草地护树（Prosopis affinis, Prosopis nigra, Aspidosperma quebracho-blanco）对植物群落组成和结构的促进作用，以及这些物种促进其他物种在其冠层下建立的机制。地点：巴西南大德州里约热内卢公园草原。方法在巴西南部南里约热内卢Grande do Sul埃斯皮尼略州立公园隔离放牧的30个圆形样地（树下和空地）进行成对植被调查。我们评估了与每棵树的组成和结构、尺寸以及环境变量相关的属性，旨在了解植物群落组装的机制。结果护林树在植物群落的聚集、促进非生物（提供遮荫、增加凋落物、减少暴露土壤）和生物（减少草本丰度）条件的变化中起着重要作用。因此，它们为草本和木本植物提供了微生境。这些树种在公园草地植物群落的组成中起着决定性的作用，对它们的保护是维持伴生物种的基础。然而，它们可以作为森林典型木本植物的细胞核，并可能长期促进森林扩张。结论这些树种具有良好的护理作用，在公园草地生态修复中具有一定的应用潜力，并可促进当地生物多样性的保护。
The Role of Nurse Trees in the Plant Community of Park Grassland: A Case Study in Southern Brazil
Aims
Understanding the mechanisms that act in the assembly of the grassy-woody plant community in park grassland is important to define conservation, management, and restoration strategies. We investigated the facilitation of three nurse tree species typical of park grassland (Prosopis affinis, Prosopis nigra, and Aspidosperma quebracho-blanco) on the composition and structure of the plant community and the mechanisms through which these species facilitate the establishment of other species under their canopies.
Location
Park grasslands of Rio Grande do Sul, Brazil.
Methods
We carried out a paired vegetation survey in 30 circular plots (under trees and in open areas) in park grassland isolated from grazing, located in the Espinilho State Park, Rio Grande do Sul, southern Brazil. We evaluated attributes related to the composition and structure, dimensions of each tree, and environmental variables, aiming to understand the mechanisms of plant community assembly.
Results
Nurse trees play an important role in the assembly of the plant community, promoting changes in abiotic (provide shade, increased litter, decreased exposed soil) and biotic (decreased herbaceous abundance) conditions. Consequently, they provide microhabitat for herbaceous and woody plants. These tree species are decisive in the assembly of the plant community in park grassland, and their conservation is fundamental for the maintenance of associated species. However, they can act as nuclei for woody plants typical of forests and possibly contribute to forest expansion in the long term.
Conclusions
Given the nursing role they play, these tree species demonstrate potential for application in ecological restoration, as well as promoting the conservation of local biodiversity in park grasslands.
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.
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