Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska
The University Archives has determined that this item is of continuing value to OSU's history. A population of ice worms, Mesenchytraeus solifugus, was observed during the summer months of 1967 on Casement Glacier, southeastern Alaska. Live and preserved specimens wre brought back for laborator...
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The Ohio State University Research Foundation
1971
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ftohiostateu:oai:kb.osu.edu:1811/35337 2023-05-15T16:20:19+02:00 Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska Daniel, Goodman 1971-12 application/pdf http://hdl.handle.net/1811/35337 en_US eng The Ohio State University Research Foundation Report (Ohio State University. Institute of Polar Studies) no. 39 http://hdl.handle.net/1811/35337 Attribution-NonCommercial-NoDerivs 3.0 Unported http://creativecommons.org/licenses/by-nc-nd/3.0/ CC-BY-NC-ND ice worms Casement Glacier Alaska Technical Report 1971 ftohiostateu 2020-08-22T19:31:53Z The University Archives has determined that this item is of continuing value to OSU's history. A population of ice worms, Mesenchytraeus solifugus, was observed during the summer months of 1967 on Casement Glacier, southeastern Alaska. Live and preserved specimens wre brought back for laboratory studies. Casement Glacier specimens are distinguishable from previously described populations mainly on the basis of morphology of internal reproductive organs. On snow, the worm's appearance at the surface is mediated by light intensity. Worms were not seen on snowfields not overlying glacier ice. Their distribution on the glacier seemed related to the distribution of snow and ice algae. Counts were made of various algal forms in ice, snow and water samples. The worms ingest algae. Estimates of standing crop and energy flow in the worm and algal populations indicate the plausability of the ice worm's subsisting on the algal productivity. Snow buntings, and probably semipalmated plovers, eat ice worms. Respiration rate of the ice worm is compared with those of other oligochaetes. Results indicate that the ice worm does not maintain a state that would be predicted from low temperature physiological acclimation in a worm normally living at higher temperatures. This suggests an operational distinction between evolutionary ecological adaptation to temperature and physiological adaptation in the individual. The ice worms begin to autolyze and finally disintegrate at 20 degrees C and above. The Ohio State University Research Foundation Report glacier ice algae Alaska Ohio State University (OSU): Knowledge Bank |
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Open Polar |
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Ohio State University (OSU): Knowledge Bank |
op_collection_id |
ftohiostateu |
language |
English |
topic |
ice worms Casement Glacier Alaska |
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ice worms Casement Glacier Alaska Daniel, Goodman Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska |
topic_facet |
ice worms Casement Glacier Alaska |
description |
The University Archives has determined that this item is of continuing value to OSU's history. A population of ice worms, Mesenchytraeus solifugus, was observed during the summer months of 1967 on Casement Glacier, southeastern Alaska. Live and preserved specimens wre brought back for laboratory studies. Casement Glacier specimens are distinguishable from previously described populations mainly on the basis of morphology of internal reproductive organs. On snow, the worm's appearance at the surface is mediated by light intensity. Worms were not seen on snowfields not overlying glacier ice. Their distribution on the glacier seemed related to the distribution of snow and ice algae. Counts were made of various algal forms in ice, snow and water samples. The worms ingest algae. Estimates of standing crop and energy flow in the worm and algal populations indicate the plausability of the ice worm's subsisting on the algal productivity. Snow buntings, and probably semipalmated plovers, eat ice worms. Respiration rate of the ice worm is compared with those of other oligochaetes. Results indicate that the ice worm does not maintain a state that would be predicted from low temperature physiological acclimation in a worm normally living at higher temperatures. This suggests an operational distinction between evolutionary ecological adaptation to temperature and physiological adaptation in the individual. The ice worms begin to autolyze and finally disintegrate at 20 degrees C and above. The Ohio State University Research Foundation |
format |
Report |
author |
Daniel, Goodman |
author_facet |
Daniel, Goodman |
author_sort |
Daniel, Goodman |
title |
Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska |
title_short |
Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska |
title_full |
Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska |
title_fullStr |
Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska |
title_full_unstemmed |
Ecological Investigations of Ice Worms on Casement Glacier, Southeastern Alaska |
title_sort |
ecological investigations of ice worms on casement glacier, southeastern alaska |
publisher |
The Ohio State University Research Foundation |
publishDate |
1971 |
url |
http://hdl.handle.net/1811/35337 |
genre |
glacier ice algae Alaska |
genre_facet |
glacier ice algae Alaska |
op_relation |
Report (Ohio State University. Institute of Polar Studies) no. 39 http://hdl.handle.net/1811/35337 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Unported http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766008225630519296 |