Natural regeneration of Picea abies on small clear-cuts in SE Norway

Hanssen, Kjersti

doi:10.1016/s0378-1127(02)00610-2

Cited by 69 publications

(76 citation statements)

References 44 publications

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“…Moss cover has been shown to have both positive and negative effects on spontaneous establishment of forest tree species, with the main negative effect being associated with thick moss layers (e.g. Hanssen, 2003). Establishment of some alvar species has also been shown to be negatively affected by moss cover (Zamfir, 2000).…”

Section: Discussionmentioning

confidence: 99%

Vegetation development on extensive vegetated green roofs: Influence of substrate composition, establishment method and species mix

Emilsson

2008

Ecological Engineering

145

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Section: Discussionmentioning

confidence: 99%

Vegetation development on extensive vegetated green roofs: Influence of substrate composition, establishment method and species mix

Emilsson

2008

Ecological Engineering

145

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“…Furthermore, the positive properties of humus layers on seedling establishment of spruce are at the moment not fully understood [30,31]. Increased understanding about the relationship between chemical properties of mineral soil, organic layer, and decayed woody debris on the one hand and the development and nutrition of Norway spruce seedlings on the other may have practical applications for the improvement of future methods of natural or artificial regeneration.…”

Section: Stand Historymentioning

confidence: 99%

“…Thick litter accumulations on the forest floor are often viewed as detrimental to conifer seedling survival because they are prone to drying and prevent the root systems of the seedlings from quickly reaching mineral soil [14]. However, Hanssen [30] found a positive influence of increasing humus thickness on regeneration of spruce. We suggest that due to enhanced nutrient availability and higher water storage capacity, dead wood and organic layers represent a good seedbed for naturally regenerating spruce in mountainous forests of the Bavarian limestone Alps.…”

Section: Seedbed Qualities Of the Studied Substratesmentioning

confidence: 99%

Early development and nutrition of Norway spruce (Picea abies(L.) Karst.) seedlings on different seedbeds in the Bavarian limestone Alps – a bioassay

et al. 2006

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-The development and nutrition of Norway spruce seedlings growing under controlled conditions in three different seedbed types (mineral Ah horizon, organic layer, highly decayed dead wood) obtained from two protective forest sites in the Bavarian limestone Alps was investigated for one growing season. The seedlings showed clear responses to the three natural seedbed types in biomass development and nutritional status. Their biomass was significantly lower in mineral soils and organic layers as compared to decayed dead wood. Seedlings in organic and in decayed wood substrates had significantly higher contents of N, P, K, Mn, Zn (only decayed wood), and more balanced nutrient relations as compared to seedlings grown in mineral soils. It was indicated that the acid organic layers and highly decayed dead wood represents a good seedbed for spruce natural regeneration, especially in regard to the impaired nutrient availability on alkaline dolomite sites in the Bavarian limestone Alps.Picea abies / decayed woody debris / organic layer / mineral soil / seedbed Résumé -Développement précoce et nutrition de semis de Picea abies (L) Karst. élevés sur différents substrats dans les Alpes Bavaroises calcaires. Le développement et la nutrition de semis d'épicéa poussant en conditions contrôlées sur trois types de substrat (horizon minéral Ah, strate organique, bois mort très pourri), prélevés dans deux sites forestiers protégés dans les Alpes Bavaroises calcaires, ont été étudiés pendant une saison de végétation. Les semis ont présenté une réponse nette au trois types de substrats naturels au plan du développement de la biomasse et du statut nutritionnel. Leur biomasse était significativement plus faible sur sol minéral et strate organique comparativement au bois mort pourri. Les semis sur sol organique et substrat de bois mort pourri ont présenté des teneurs significativement plus élevées en N, P, K, Mn, Zn (seulement sur bois mort pourri), et des relations nutritionnelles plus équilibrées comparativement aux semis poussant sur sol minéral. Il a été montré que les strates organiques acides et le bois mort très pourri constituent un bon substrat pour la régénération naturelle de l'épicéa, en particulier au plan de la faible disponibilité des nutriments sur les sites dolomitiques alcalins dans les Alpes calcaires bavaroises.Picea abies / débris décomposés de bois / strate organique / sol minéral / substrat

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“…As the effective dispersal range of Norway spruce seeds is limited, the maximal distance from surrounding edge that may allow sufficient seed supply is limited to ca. one-two times the height of the edge trees (Hanssen 2003) survival and growth will differ markedly from those that prevail when regenerating the stand by using small gaps or methods that maintain a uniform canopy cover. Important factors that are strongly affected by gap size and the degree of canopy cover include e.g.…”

Section: Discussionmentioning

confidence: 99%

Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification

et al. 2017

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Natural regeneration of Norway spruce (Picea abies (L.) Karst.) is a relatively common practice in Norway on medium to low site indices. However, seedling establishment is often hampered by rapid regrowth of competing vegetation in scarified patches. The aim of our study was to examine the effect of coordinating scarification towards an expected seed-fall, by studying germination and seedling establishment in scarified patches of different age (fresh, one-and two-year-old). The experiment was conducted in two stands in southeast Norway that were clear-cut in 2007. Scarification was applied to subplots in autumn 2008-2010. To simulate seed-fall, seeds were sown in fresh scarification patches in spring 2009-2011, in one-year-old patches in 2010 and 2011, and in twoyear-old patches in 2011. Both germination and seedling survival were negatively affected by the age of the scarified patches. Germination was higher, and mortality lower, at the small fern woodland site, compared with the bilberry woodland site. Sowing in fresh patches also resulted in increased height and root collar diameter of the seedlings compared with sowing in older patches. It is likely that the competing vegetation both on the site and in the scarification patches affected the growth of the seedlings. In conclusion, the age of the scarified patches affected both germination and mortality, as well as early growth of the seedlings.

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Natural regeneration of Picea abies on small clear-cuts in SE Norway

Cited by 69 publications

References 44 publications

Vegetation development on extensive vegetated green roofs: Influence of substrate composition, establishment method and species mix

Vegetation development on extensive vegetated green roofs: Influence of substrate composition, establishment method and species mix

Early development and nutrition of Norway spruce (Picea abies(L.) Karst.) seedlings on different seedbeds in the Bavarian limestone Alps – a bioassay

Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification

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