Rôle de la proximité des essences feuillues sur la composition du sous-bois des jeunes peuplements dans les pessières à mousse sensibles à la paludification.
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| Title: | Rôle de la proximité des essences feuillues sur la composition du sous-bois des jeunes peuplements dans les pessières à mousse sensibles à la paludification. |
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| Authors: | De Noronha, Maísa1 (AUTHOR) maisa.de.noronha@umoncton.ca, Fenton, Nicole J.1 (AUTHOR), Leduc, Alain2 (AUTHOR), Bergeron, Yves1,2 (AUTHOR) |
| Source: | Canadian Journal of Forest Research. 4/2/2026, Vol. 56, p1-14. 14p. |
| Subject Terms: | *Waterlogging (Soils), *Soils, *Forest productivity, *Forests & forestry, *Plant diversity, Deciduous plants, Understory plants, Black spruce |
| Abstract (English): | In young moss-dominated black spruce stands, paludification reduces forest productivity, posing a challenge for the forest industry. Interactions between conifers and broadleaf species could mitigate this phenomenon, but early silvicultural treatments often limit such mixing. Through field surveys, we examined whether broadleaf presence influences understory composition, favouring herbaceous species while moderating Sphagnum growth, potentially slowing paludification. We also explored whether broadleaf-to-spruce ratios affect the humic layer and forest productivity. Additionally, we assessed broadleaf influence on soil nutrients and black spruce growth, as a key indicator of individual tree performance. Our results show that pure conifer stands have lower understory diversity and more light-loving Sphagnum, typical of older or paludified forests. Canopy gaps do not directly initiate paludification in young stands, though they indirectly favor light-preferring Sphagnum species. In contrast, broadleaf litter plays a crucial role in countering paludification by enhancing humus properties: it increases pH and nutrient availability, which favours herbaceous species over the light-preferring Sphagnum that drives peat accumulation. These findings confirm that early-stage broadleaf-conifer coexistence enhances plant diversity and soil quality, delaying paludification. [ABSTRACT FROM AUTHOR] |
| Abstract (French): | Dans les jeunes pessières à mousses, la paludification réduit la productivité forestière, posant un défi pour l'industrie. L'interaction conifères-feuillus pourrait atténuer ce phénomène, mais les traitements sylvicoles précoces limitent souvent ce mélange. À travers des inventaires de terrain, nous avons étudié si la présence des feuillus influence la composition du sous-bois, favorisant les espèces herbacées tout en modérant l'abondance des sphaignes de lumière, et si le ratio feuillus/conifères impacte la couche humique et la productivité forestière. Nous avons aussi analysé l'effet des feuillus sur la disponibilité des nutriments du sol et la croissance des épinettes noires. Les jeunes peuplements uniquement conifériens présentent une diversité réduite du sous-bois et davantage de sphaignes de lumière, typiques des forêts plus âgées ou paludifiées. L'ouverture du couvert des peuplements conifériens ne semble pas être le principal déclencheur de la paludification chez les jeunes peuplements, bien que la lumière favorise indirectement les sphaignes de lumière; la litière feuillue joue un rôle clé en enrichissant l'humus. Nos observations confirment que la coexistence précoce de feuillus et de conifères améliore la diversité végétale et la qualité des sols, retardant ainsi la paludification. [ABSTRACT FROM AUTHOR] |
| Copyright of Canadian Journal of Forest Research is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Rôle de la proximité des essences feuillues sur la composition du sous-bois des jeunes peuplements dans les pessières à mousse sensibles à la paludification. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22De+Noronha%2C+Maísa%22">De Noronha, Maísa</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> maisa.de.noronha@umoncton.ca</i><br /><searchLink fieldCode="AR" term="%22Fenton%2C+Nicole+J%2E%22">Fenton, Nicole J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Leduc%2C+Alain%22">Leduc, Alain</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bergeron%2C+Yves%22">Bergeron, Yves</searchLink><relatesTo>1,2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Canadian+Journal+of+Forest+Research%22">Canadian Journal of Forest Research</searchLink>. 4/2/2026, Vol. 56, p1-14. 14p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Waterlogging+%28Soils%29%22">Waterlogging (Soils)</searchLink><br />*<searchLink fieldCode="DE" term="%22Soils%22">Soils</searchLink><br />*<searchLink fieldCode="DE" term="%22Forest+productivity%22">Forest productivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Forests+%26+forestry%22">Forests & forestry</searchLink><br />*<searchLink fieldCode="DE" term="%22Plant+diversity%22">Plant diversity</searchLink><br /><searchLink fieldCode="DE" term="%22Deciduous+plants%22">Deciduous plants</searchLink><br /><searchLink fieldCode="DE" term="%22Understory+plants%22">Understory plants</searchLink><br /><searchLink fieldCode="DE" term="%22Black+spruce%22">Black spruce</searchLink> – Name: Abstract Label: Abstract (English) Group: Ab Data: In young moss-dominated black spruce stands, paludification reduces forest productivity, posing a challenge for the forest industry. Interactions between conifers and broadleaf species could mitigate this phenomenon, but early silvicultural treatments often limit such mixing. Through field surveys, we examined whether broadleaf presence influences understory composition, favouring herbaceous species while moderating Sphagnum growth, potentially slowing paludification. We also explored whether broadleaf-to-spruce ratios affect the humic layer and forest productivity. Additionally, we assessed broadleaf influence on soil nutrients and black spruce growth, as a key indicator of individual tree performance. Our results show that pure conifer stands have lower understory diversity and more light-loving Sphagnum, typical of older or paludified forests. Canopy gaps do not directly initiate paludification in young stands, though they indirectly favor light-preferring Sphagnum species. In contrast, broadleaf litter plays a crucial role in countering paludification by enhancing humus properties: it increases pH and nutrient availability, which favours herbaceous species over the light-preferring Sphagnum that drives peat accumulation. These findings confirm that early-stage broadleaf-conifer coexistence enhances plant diversity and soil quality, delaying paludification. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Abstract (French) Group: Ab Data: Dans les jeunes pessières à mousses, la paludification réduit la productivité forestière, posant un défi pour l'industrie. L'interaction conifères-feuillus pourrait atténuer ce phénomène, mais les traitements sylvicoles précoces limitent souvent ce mélange. À travers des inventaires de terrain, nous avons étudié si la présence des feuillus influence la composition du sous-bois, favorisant les espèces herbacées tout en modérant l'abondance des sphaignes de lumière, et si le ratio feuillus/conifères impacte la couche humique et la productivité forestière. Nous avons aussi analysé l'effet des feuillus sur la disponibilité des nutriments du sol et la croissance des épinettes noires. Les jeunes peuplements uniquement conifériens présentent une diversité réduite du sous-bois et davantage de sphaignes de lumière, typiques des forêts plus âgées ou paludifiées. L'ouverture du couvert des peuplements conifériens ne semble pas être le principal déclencheur de la paludification chez les jeunes peuplements, bien que la lumière favorise indirectement les sphaignes de lumière; la litière feuillue joue un rôle clé en enrichissant l'humus. Nos observations confirment que la coexistence précoce de feuillus et de conifères améliore la diversité végétale et la qualité des sols, retardant ainsi la paludification. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Canadian Journal of Forest Research is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1139/cjfr-2025-0258 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 1 Subjects: – SubjectFull: Waterlogging (Soils) Type: general – SubjectFull: Soils Type: general – SubjectFull: Forest productivity Type: general – SubjectFull: Forests & forestry Type: general – SubjectFull: Plant diversity Type: general – SubjectFull: Deciduous plants Type: general – SubjectFull: Understory plants Type: general – SubjectFull: Black spruce Type: general Titles: – TitleFull: Rôle de la proximité des essences feuillues sur la composition du sous-bois des jeunes peuplements dans les pessières à mousse sensibles à la paludification. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: De Noronha, Maísa – PersonEntity: Name: NameFull: Fenton, Nicole J. – PersonEntity: Name: NameFull: Leduc, Alain – PersonEntity: Name: NameFull: Bergeron, Yves IsPartOfRelationships: – BibEntity: Dates: – D: 02 M: 04 Text: 4/2/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00455067 Numbering: – Type: volume Value: 56 Titles: – TitleFull: Canadian Journal of Forest Research Type: main |
| ResultId | 1 |
