Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec
Subfossil black spruce ( Picea mariana [Mill.] B.S.P.) stems from permafrost mires in a 250-km 2 area at the arctic tree-line, near the eastern coast of Hudson Bay, were sampled for the construction of a long 'light-ring' chronology spanning the late Holocene. Thirty-three out of the 143 s...
Published in: | The Holocene |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
1997
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1177/095968369700700201 http://journals.sagepub.com/doi/pdf/10.1177/095968369700700201 |
id |
crsagepubl:10.1177/095968369700700201 |
---|---|
record_format |
openpolar |
spelling |
crsagepubl:10.1177/095968369700700201 2023-05-15T15:11:34+02:00 Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec Lavoie, Claude Payette, Serge 1997 http://dx.doi.org/10.1177/095968369700700201 http://journals.sagepub.com/doi/pdf/10.1177/095968369700700201 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 7, issue 2, page 129-137 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 1997 crsagepubl https://doi.org/10.1177/095968369700700201 2022-04-14T04:39:16Z Subfossil black spruce ( Picea mariana [Mill.] B.S.P.) stems from permafrost mires in a 250-km 2 area at the arctic tree-line, near the eastern coast of Hudson Bay, were sampled for the construction of a long 'light-ring' chronology spanning the late Holocene. Thirty-three out of the 143 sampled spruce logs were 14 C- dated yielding dates between 4580 and 1540 BP (3550-3010 cal. BC - cal. AD 377-649). Light rings (rings with thin-walled latewood cells or showing reduced latewood cell development) were numerous in all the studied stem discs and a set of 47 logs was successfully cross-dated. The cross-dated trees were used to build seven 'floating' light-ring chronologies located between c. 1200 cal. BC and cal. AD 500 (i.e., c. 1200 to 1000 cal. BC, 900 to 800 cal. BC, 700 to 400 cal. BC, 700 to 500 cal. BC, 100 cal. BC to cal. AD 300, cal. AD 50 to 450 and cal. AD 400 to 500). The large number of light rings in mire spruces appears to be associated with particular growth conditions in mires. A comparison of the frequency of light rings in extant spruce growing in mires and in dry-mesic sites showed that light rings were more common in peatland trees during this century. A delayed growing season caused by late peat thaw may possibly explain the difference between the two groups of sampled trees. Article in Journal/Newspaper Arctic Hudson Bay permafrost Subarctic SAGE Publications (via Crossref) Arctic Hudson Hudson Bay The Holocene 7 2 129 137 |
institution |
Open Polar |
collection |
SAGE Publications (via Crossref) |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Lavoie, Claude Payette, Serge Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Subfossil black spruce ( Picea mariana [Mill.] B.S.P.) stems from permafrost mires in a 250-km 2 area at the arctic tree-line, near the eastern coast of Hudson Bay, were sampled for the construction of a long 'light-ring' chronology spanning the late Holocene. Thirty-three out of the 143 sampled spruce logs were 14 C- dated yielding dates between 4580 and 1540 BP (3550-3010 cal. BC - cal. AD 377-649). Light rings (rings with thin-walled latewood cells or showing reduced latewood cell development) were numerous in all the studied stem discs and a set of 47 logs was successfully cross-dated. The cross-dated trees were used to build seven 'floating' light-ring chronologies located between c. 1200 cal. BC and cal. AD 500 (i.e., c. 1200 to 1000 cal. BC, 900 to 800 cal. BC, 700 to 400 cal. BC, 700 to 500 cal. BC, 100 cal. BC to cal. AD 300, cal. AD 50 to 450 and cal. AD 400 to 500). The large number of light rings in mire spruces appears to be associated with particular growth conditions in mires. A comparison of the frequency of light rings in extant spruce growing in mires and in dry-mesic sites showed that light rings were more common in peatland trees during this century. A delayed growing season caused by late peat thaw may possibly explain the difference between the two groups of sampled trees. |
format |
Article in Journal/Newspaper |
author |
Lavoie, Claude Payette, Serge |
author_facet |
Lavoie, Claude Payette, Serge |
author_sort |
Lavoie, Claude |
title |
Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec |
title_short |
Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec |
title_full |
Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec |
title_fullStr |
Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec |
title_full_unstemmed |
Late-Holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic Québec |
title_sort |
late-holocene light-ring chronologies from subfossil black spruce stems in mires of subarctic québec |
publisher |
SAGE Publications |
publishDate |
1997 |
url |
http://dx.doi.org/10.1177/095968369700700201 http://journals.sagepub.com/doi/pdf/10.1177/095968369700700201 |
geographic |
Arctic Hudson Hudson Bay |
geographic_facet |
Arctic Hudson Hudson Bay |
genre |
Arctic Hudson Bay permafrost Subarctic |
genre_facet |
Arctic Hudson Bay permafrost Subarctic |
op_source |
The Holocene volume 7, issue 2, page 129-137 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/095968369700700201 |
container_title |
The Holocene |
container_volume |
7 |
container_issue |
2 |
container_start_page |
129 |
op_container_end_page |
137 |
_version_ |
1766342405448007680 |