Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland
A large proportion of drained spruce mire stands is currently approaching regeneration maturity in Finland. Traditional regeneration methods with effective site preparation and planting generally result in satisfactory seedling stands also in spruce mires. However, natural regeneration methods may b...
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ftdoajarticles:oai:doaj.org/article:79c800fc7d2545b990432f7074480466 2023-05-15T17:42:20+02:00 Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland Hökkä, Hannu Repola, Jaakko Moilanen, Mikko Saarinen, Markku 2011-01-01T00:00:00Z https://doi.org/10.14214/sf.97 https://doaj.org/article/79c800fc7d2545b990432f7074480466 EN eng Finnish Society of Forest Science https://www.silvafennica.fi/article/97 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.97 https://doaj.org/article/79c800fc7d2545b990432f7074480466 Silva Fennica, Vol 45, Iss 4 (2011) Forestry SD1-669.5 article 2011 ftdoajarticles https://doi.org/10.14214/sf.97 2022-12-31T06:58:49Z A large proportion of drained spruce mire stands is currently approaching regeneration maturity in Finland. Traditional regeneration methods with effective site preparation and planting generally result in satisfactory seedling stands also in spruce mires. However, natural regeneration methods may be more appropriate in protecting watercourses and minimizing regeneration costs. We studied the survival of advance growth and establishment of new seedlings in small canopy openings that were cut at three different diameters in two experimental drained spruce mire stands in Northern Finland (Tervola and Oulu) in 2004. The number of seedlings was repeatedly surveyed from five small circular plots (one 10 m and four 5 m plots in size) located within the opening. Advance growth which survived the cutting and new seedlings were separated in the surveys. The density of advance growth was on average 9000Â ha after cutting, and it decreased by 30% during the five-year monitoring period (2006â2010) due to natural mortality. The number of new seedlings increased rapidly within the three years after cutting the openings. In 2010, 11 000â26 000 new seedlings ha in Tervola and 12 000â16 000Â ha in Oulu on average were observed. The size of the opening had no clear effect on the regeneration result. The proportion of birch of the new seedlings increased with time and opening size in Tervola. The results show that Norway spruce regenerates naturally in small canopy openings cut in mature drained spruce mire stands.22â1â1â1 Article in Journal/Newspaper Northern Finland Directory of Open Access Journals: DOAJ Articles Norway Silva Fennica 45 4 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Forestry SD1-669.5 |
spellingShingle |
Forestry SD1-669.5 Hökkä, Hannu Repola, Jaakko Moilanen, Mikko Saarinen, Markku Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland |
topic_facet |
Forestry SD1-669.5 |
description |
A large proportion of drained spruce mire stands is currently approaching regeneration maturity in Finland. Traditional regeneration methods with effective site preparation and planting generally result in satisfactory seedling stands also in spruce mires. However, natural regeneration methods may be more appropriate in protecting watercourses and minimizing regeneration costs. We studied the survival of advance growth and establishment of new seedlings in small canopy openings that were cut at three different diameters in two experimental drained spruce mire stands in Northern Finland (Tervola and Oulu) in 2004. The number of seedlings was repeatedly surveyed from five small circular plots (one 10 m and four 5 m plots in size) located within the opening. Advance growth which survived the cutting and new seedlings were separated in the surveys. The density of advance growth was on average 9000Â ha after cutting, and it decreased by 30% during the five-year monitoring period (2006â2010) due to natural mortality. The number of new seedlings increased rapidly within the three years after cutting the openings. In 2010, 11 000â26 000 new seedlings ha in Tervola and 12 000â16 000Â ha in Oulu on average were observed. The size of the opening had no clear effect on the regeneration result. The proportion of birch of the new seedlings increased with time and opening size in Tervola. The results show that Norway spruce regenerates naturally in small canopy openings cut in mature drained spruce mire stands.22â1â1â1 |
format |
Article in Journal/Newspaper |
author |
Hökkä, Hannu Repola, Jaakko Moilanen, Mikko Saarinen, Markku |
author_facet |
Hökkä, Hannu Repola, Jaakko Moilanen, Mikko Saarinen, Markku |
author_sort |
Hökkä, Hannu |
title |
Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland |
title_short |
Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland |
title_full |
Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland |
title_fullStr |
Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland |
title_full_unstemmed |
Seedling survival and establishment in small canopy openings in drained spruce mires in Northern Finland |
title_sort |
seedling survival and establishment in small canopy openings in drained spruce mires in northern finland |
publisher |
Finnish Society of Forest Science |
publishDate |
2011 |
url |
https://doi.org/10.14214/sf.97 https://doaj.org/article/79c800fc7d2545b990432f7074480466 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Silva Fennica, Vol 45, Iss 4 (2011) |
op_relation |
https://www.silvafennica.fi/article/97 https://doaj.org/toc/2242-4075 2242-4075 doi:10.14214/sf.97 https://doaj.org/article/79c800fc7d2545b990432f7074480466 |
op_doi |
https://doi.org/10.14214/sf.97 |
container_title |
Silva Fennica |
container_volume |
45 |
container_issue |
4 |
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1766144177724194816 |