Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content
Individual plants of Dicranum fuscescens were collected from two field sites (a highland semitundra and a lowland lichen woodland) near Schefferville, Quebec (latitude 55° N), for 4½ months during 1974. Collections were made at 2-week intervals from June until the 2nd week in October. Samples were s...
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Language: | French |
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Canadian Science Publishing
1977
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Online Access: | http://dx.doi.org/10.1139/b77-245 http://www.nrcresearchpress.com/doi/pdf/10.1139/b77-245 |
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crcansciencepubl:10.1139/b77-245 2023-12-17T10:50:47+01:00 Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content Hicklenton, Peter R. Oechel, Walter C. 1977 http://dx.doi.org/10.1139/b77-245 http://www.nrcresearchpress.com/doi/pdf/10.1139/b77-245 fr fre Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 55, issue 16, page 2168-2177 ISSN 0008-4026 Plant Science journal-article 1977 crcansciencepubl https://doi.org/10.1139/b77-245 2023-11-19T13:38:44Z Individual plants of Dicranum fuscescens were collected from two field sites (a highland semitundra and a lowland lichen woodland) near Schefferville, Quebec (latitude 55° N), for 4½ months during 1974. Collections were made at 2-week intervals from June until the 2nd week in October. Samples were separated into green and brown shoot components and oven-dried. Subsequently analyses were carried out to determine concentrations of total carbohydrates (sugar and starch) and lipids in the respective tissues. Total carbohydrates were found to increase in the green tissues towards the end of the season reaching a maximum of between 10 and 10.5% ash-free tissue dry weight in October. Lipid concentrations showed a maximum of between 3.6 and 4.0% ash-free dry weight during July and subsequently declined, in the same tissues. Seasonal trends of nutrient concentration in the brown portions of the shoot were not marked.An investigation of biomass distribution in complete plants of D. fuscescens revealed that brown shoots accounted for more than half of the total. Mean lengths of these parts of the shoot were about twice those of the upper stem. Article in Journal/Newspaper Subarctic Canadian Science Publishing (via Crossref) Canadian Journal of Botany 55 16 2168 2177 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
French |
topic |
Plant Science |
spellingShingle |
Plant Science Hicklenton, Peter R. Oechel, Walter C. Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content |
topic_facet |
Plant Science |
description |
Individual plants of Dicranum fuscescens were collected from two field sites (a highland semitundra and a lowland lichen woodland) near Schefferville, Quebec (latitude 55° N), for 4½ months during 1974. Collections were made at 2-week intervals from June until the 2nd week in October. Samples were separated into green and brown shoot components and oven-dried. Subsequently analyses were carried out to determine concentrations of total carbohydrates (sugar and starch) and lipids in the respective tissues. Total carbohydrates were found to increase in the green tissues towards the end of the season reaching a maximum of between 10 and 10.5% ash-free tissue dry weight in October. Lipid concentrations showed a maximum of between 3.6 and 4.0% ash-free dry weight during July and subsequently declined, in the same tissues. Seasonal trends of nutrient concentration in the brown portions of the shoot were not marked.An investigation of biomass distribution in complete plants of D. fuscescens revealed that brown shoots accounted for more than half of the total. Mean lengths of these parts of the shoot were about twice those of the upper stem. |
format |
Article in Journal/Newspaper |
author |
Hicklenton, Peter R. Oechel, Walter C. |
author_facet |
Hicklenton, Peter R. Oechel, Walter C. |
author_sort |
Hicklenton, Peter R. |
title |
Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content |
title_short |
Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content |
title_full |
Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content |
title_fullStr |
Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content |
title_full_unstemmed |
Physiological aspects of the ecology of Dicranum fuscescens in the subarctic. II. Seasonal patterns of organic nutrient content |
title_sort |
physiological aspects of the ecology of dicranum fuscescens in the subarctic. ii. seasonal patterns of organic nutrient content |
publisher |
Canadian Science Publishing |
publishDate |
1977 |
url |
http://dx.doi.org/10.1139/b77-245 http://www.nrcresearchpress.com/doi/pdf/10.1139/b77-245 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Canadian Journal of Botany volume 55, issue 16, page 2168-2177 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b77-245 |
container_title |
Canadian Journal of Botany |
container_volume |
55 |
container_issue |
16 |
container_start_page |
2168 |
op_container_end_page |
2177 |
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1785575848981561344 |