Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan
Previous palaeoecological studies have shown that there have been major range shifts in Tsuga (hemlock) during the middle and late Holocene that seem to indicate climatic cooling and an increase in available moisture. We examined lake-level changes and peatland growth at Glimmerglass Lake and peatla...
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Online Access: | http://dx.doi.org/10.1191/0959683604hl761rp http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl761rp |
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crsagepubl:10.1191/0959683604hl761rp 2023-05-15T16:40:58+02:00 Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan Brugam, Richard B. Owen, Beth Kolesa, Lawrence 2004 http://dx.doi.org/10.1191/0959683604hl761rp http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl761rp en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 14, issue 6, page 807-817 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2004 crsagepubl https://doi.org/10.1191/0959683604hl761rp 2022-04-14T04:52:30Z Previous palaeoecological studies have shown that there have been major range shifts in Tsuga (hemlock) during the middle and late Holocene that seem to indicate climatic cooling and an increase in available moisture. We examined lake-level changes and peatland growth at Glimmerglass Lake and peatland in the Sylvania Wilderness Area to determine if the mid-Holocene increase in moisture indicated by the pollen record also influenced lakes and wetlands. Sphagnum peat began accumulating at the site at 6240 cal. yr BP. Diatom-inferred depth reconstructions show that the lake level rose 2 m and the peatland expanded out of its basin at 5300 cal. yr BP. All of these changes occurred as the last remnant of the Laurentide Ice Sheet disappeared and orbital forcing reduced seasonality relative to the early Holocene. We conclude that these continental-scale factors caused increased moisture availability in the Upper Peninsula of Michigan, resulting in rising lakewater levels and peatland expansion. Article in Journal/Newspaper Ice Sheet SAGE Publications (via Crossref) The Holocene 14 6 807 817 |
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 Brugam, Richard B. Owen, Beth Kolesa, Lawrence Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Previous palaeoecological studies have shown that there have been major range shifts in Tsuga (hemlock) during the middle and late Holocene that seem to indicate climatic cooling and an increase in available moisture. We examined lake-level changes and peatland growth at Glimmerglass Lake and peatland in the Sylvania Wilderness Area to determine if the mid-Holocene increase in moisture indicated by the pollen record also influenced lakes and wetlands. Sphagnum peat began accumulating at the site at 6240 cal. yr BP. Diatom-inferred depth reconstructions show that the lake level rose 2 m and the peatland expanded out of its basin at 5300 cal. yr BP. All of these changes occurred as the last remnant of the Laurentide Ice Sheet disappeared and orbital forcing reduced seasonality relative to the early Holocene. We conclude that these continental-scale factors caused increased moisture availability in the Upper Peninsula of Michigan, resulting in rising lakewater levels and peatland expansion. |
format |
Article in Journal/Newspaper |
author |
Brugam, Richard B. Owen, Beth Kolesa, Lawrence |
author_facet |
Brugam, Richard B. Owen, Beth Kolesa, Lawrence |
author_sort |
Brugam, Richard B. |
title |
Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan |
title_short |
Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan |
title_full |
Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan |
title_fullStr |
Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan |
title_full_unstemmed |
Continental-scale climate forcing factors and environmental change at Glimmerglass Lake in the upper Peninsula of Michigan |
title_sort |
continental-scale climate forcing factors and environmental change at glimmerglass lake in the upper peninsula of michigan |
publisher |
SAGE Publications |
publishDate |
2004 |
url |
http://dx.doi.org/10.1191/0959683604hl761rp http://journals.sagepub.com/doi/pdf/10.1191/0959683604hl761rp |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
The Holocene volume 14, issue 6, page 807-817 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1191/0959683604hl761rp |
container_title |
The Holocene |
container_volume |
14 |
container_issue |
6 |
container_start_page |
807 |
op_container_end_page |
817 |
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1766031399549140992 |