Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands
The black locust (<i>Robinia pseudoacacia</i> L.) is the second-most abundant deciduous tree in forest plantations, and one of the most important invasive woody species worldwide. The species has a strong transformer capacity, especially expressed by its nitrogen enrichment effect caused...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/18/3253 |
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| author | Ágnes Csiszár Dániel Winkler Dénes Bartha Gergely Zagyvai |
| author_facet | Ágnes Csiszár Dániel Winkler Dénes Bartha Gergely Zagyvai |
| author_sort | Ágnes Csiszár |
| collection | DOAJ |
| description | The black locust (<i>Robinia pseudoacacia</i> L.) is the second-most abundant deciduous tree in forest plantations, and one of the most important invasive woody species worldwide. The species has a strong transformer capacity, especially expressed by its nitrogen enrichment effect caused by nitrogen-fixing bacteria living in its root-nodules. The aim of this study was to explore the mutually interacting factors of nitrogen-fixing root-nodules, site characteristics, and herb-layer composition of 28 North Hungarian black locust stands. In the herb-layers of the study sites, a total of 121 plant species were identified, representing a relatively low species richness. The studied black locust stands showed high variability both in their herb-layer compositions and root-nodule formation, but no clear relationship could be demonstrated between these characteristics. The PCA component with which the species richness and Shannon–Wiener diversity index were strongly correlated was negatively associated with all root-nodule parameters (number, surface area, and weight), supporting the biodiversity-reducing effect of black locust by its nitrogen-fixing bacteria. All of the root-nodule parameters were negatively correlated with the PCA factor predominantly determined by stand age, confirming that the root-nodule biomass decreases as time progresses. |
| first_indexed | 2024-03-10T22:13:49Z |
| format | Article |
| id | doaj.art-e4a396ab0b334596aac9a6f905009b6f |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T22:13:49Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-e4a396ab0b334596aac9a6f905009b6f2023-11-19T12:32:16ZengMDPI AGPlants2223-77472023-09-011218325310.3390/plants12183253Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) StandsÁgnes Csiszár0Dániel Winkler1Dénes Bartha2Gergely Zagyvai3Institute of Environmental Protection and Nature Conservation, 9400 Sopron, HungaryInstitute of Wildlife Biology and Management, University of Sopron, 9400 Sopron, HungaryInstitute of Environmental Protection and Nature Conservation, 9400 Sopron, HungaryInstitute of Environmental Protection and Nature Conservation, 9400 Sopron, HungaryThe black locust (<i>Robinia pseudoacacia</i> L.) is the second-most abundant deciduous tree in forest plantations, and one of the most important invasive woody species worldwide. The species has a strong transformer capacity, especially expressed by its nitrogen enrichment effect caused by nitrogen-fixing bacteria living in its root-nodules. The aim of this study was to explore the mutually interacting factors of nitrogen-fixing root-nodules, site characteristics, and herb-layer composition of 28 North Hungarian black locust stands. In the herb-layers of the study sites, a total of 121 plant species were identified, representing a relatively low species richness. The studied black locust stands showed high variability both in their herb-layer compositions and root-nodule formation, but no clear relationship could be demonstrated between these characteristics. The PCA component with which the species richness and Shannon–Wiener diversity index were strongly correlated was negatively associated with all root-nodule parameters (number, surface area, and weight), supporting the biodiversity-reducing effect of black locust by its nitrogen-fixing bacteria. All of the root-nodule parameters were negatively correlated with the PCA factor predominantly determined by stand age, confirming that the root-nodule biomass decreases as time progresses.https://www.mdpi.com/2223-7747/12/18/3253biological indicationinvasive tree speciesdiversitynitrogen fixationroot-nodule |
| spellingShingle | Ágnes Csiszár Dániel Winkler Dénes Bartha Gergely Zagyvai Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands Plants biological indication invasive tree species diversity nitrogen fixation root-nodule |
| title | Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands |
| title_full | Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands |
| title_fullStr | Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands |
| title_full_unstemmed | Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands |
| title_short | Diverse Interactions: Root-Nodule Formation and Herb-Layer Composition in Black Locust (<i>Robinia pseudoacacia</i>) Stands |
| title_sort | diverse interactions root nodule formation and herb layer composition in black locust i robinia pseudoacacia i stands |
| topic | biological indication invasive tree species diversity nitrogen fixation root-nodule |
| url | https://www.mdpi.com/2223-7747/12/18/3253 |
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