The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland
The natural invasion of mountain alder (Alnuscrispa (Ait.) Pursh) into monoculture plantations of black spruce (Piceamariana (Mill.) B.S.P.) and Sitka spruce (Piceasitchensis (Bong.) Carr.) afforded an opportunity to assess the effects of mountain alder on soils, and on the growth, nutrient status,...
Published in: | Canadian Journal of Forest Research |
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Language: | English |
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Canadian Science Publishing
1993
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Online Access: | http://dx.doi.org/10.1139/x93-097 http://www.nrcresearchpress.com/doi/pdf/10.1139/x93-097 |
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crcansciencepubl:10.1139/x93-097 2023-12-17T10:43:48+01:00 The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland Hudson, André J. 1993 http://dx.doi.org/10.1139/x93-097 http://www.nrcresearchpress.com/doi/pdf/10.1139/x93-097 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Forest Research volume 23, issue 4, page 743-748 ISSN 0045-5067 1208-6037 Ecology Forestry Global and Planetary Change journal-article 1993 crcansciencepubl https://doi.org/10.1139/x93-097 2023-11-19T13:39:37Z The natural invasion of mountain alder (Alnuscrispa (Ait.) Pursh) into monoculture plantations of black spruce (Piceamariana (Mill.) B.S.P.) and Sitka spruce (Piceasitchensis (Bong.) Carr.) afforded an opportunity to assess the effects of mountain alder on soils, and on the growth, nutrient status, and survival of spruce in eastern Newfoundland. The plantations were established on ploughed Kalmia–Vaccinium heath in 1968–1969. Significant increases in the growth of spruce were associated with the presence of high densities of mountain alder in the two plantations studied. The increases began 3–6 years after the invasion and establishment of mountain alder. Estimated nitrogen (N) contributions to each plantation from mountain alder leaf litter fall were approximately 50 kg•ha −1 •year −1 . Spruce foliage N content was 10–15% higher in high-density mountain alder (HD-alder) plots than in low-density mountain alder (LD-alder) plots, but other foliar nutrient concentrations were low and possibly deficient in the HD-alder plots. Development of a litter fall–humus layer was observed in HD-alder plots but not in LD-alder plots; however, B-horizon soil-N values did not differ significantly between HD-alder and LD-alder plots. The mountain alder invasion did not reduce the densities (stems/ha) of spruce. Additional studies on the autecology of Alnus spp. native to Newfoundland, and on alder-spruce interaction are recommended to further the development of an adequate ecological basis for heathland and peatland afforestation in the region. Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Carr ENVELOPE(130.717,130.717,-66.117,-66.117) Canadian Journal of Forest Research 23 4 743 748 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Ecology Forestry Global and Planetary Change |
spellingShingle |
Ecology Forestry Global and Planetary Change Hudson, André J. The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland |
topic_facet |
Ecology Forestry Global and Planetary Change |
description |
The natural invasion of mountain alder (Alnuscrispa (Ait.) Pursh) into monoculture plantations of black spruce (Piceamariana (Mill.) B.S.P.) and Sitka spruce (Piceasitchensis (Bong.) Carr.) afforded an opportunity to assess the effects of mountain alder on soils, and on the growth, nutrient status, and survival of spruce in eastern Newfoundland. The plantations were established on ploughed Kalmia–Vaccinium heath in 1968–1969. Significant increases in the growth of spruce were associated with the presence of high densities of mountain alder in the two plantations studied. The increases began 3–6 years after the invasion and establishment of mountain alder. Estimated nitrogen (N) contributions to each plantation from mountain alder leaf litter fall were approximately 50 kg•ha −1 •year −1 . Spruce foliage N content was 10–15% higher in high-density mountain alder (HD-alder) plots than in low-density mountain alder (LD-alder) plots, but other foliar nutrient concentrations were low and possibly deficient in the HD-alder plots. Development of a litter fall–humus layer was observed in HD-alder plots but not in LD-alder plots; however, B-horizon soil-N values did not differ significantly between HD-alder and LD-alder plots. The mountain alder invasion did not reduce the densities (stems/ha) of spruce. Additional studies on the autecology of Alnus spp. native to Newfoundland, and on alder-spruce interaction are recommended to further the development of an adequate ecological basis for heathland and peatland afforestation in the region. |
format |
Article in Journal/Newspaper |
author |
Hudson, André J. |
author_facet |
Hudson, André J. |
author_sort |
Hudson, André J. |
title |
The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland |
title_short |
The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland |
title_full |
The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland |
title_fullStr |
The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland |
title_full_unstemmed |
The influence of mountain alder on the growth, nutrition, and survival of black spruce and Sitka spruce in an afforested heathland near Mobile, Newfoundland |
title_sort |
influence of mountain alder on the growth, nutrition, and survival of black spruce and sitka spruce in an afforested heathland near mobile, newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1993 |
url |
http://dx.doi.org/10.1139/x93-097 http://www.nrcresearchpress.com/doi/pdf/10.1139/x93-097 |
long_lat |
ENVELOPE(130.717,130.717,-66.117,-66.117) |
geographic |
Carr |
geographic_facet |
Carr |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Canadian Journal of Forest Research volume 23, issue 4, page 743-748 ISSN 0045-5067 1208-6037 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/x93-097 |
container_title |
Canadian Journal of Forest Research |
container_volume |
23 |
container_issue |
4 |
container_start_page |
743 |
op_container_end_page |
748 |
_version_ |
1785559588784832512 |