Corresponding Author.
Moist calcareous tundra has many ecosystem properties analogous to those of the hypothesized Mammoth Steppea or steppe tundra of glacial Beringia, and today it is an important range land for arctic wildlife. Moist calcium-rich tundras are associated with moderately drained "ne-grained arctic so...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.6.7603 2023-05-15T14:57:17+02:00 Corresponding Author. Mail Address Daw D. A. Walker J. G. Bockheim F. S. Chapin Iii W. Eugster F. E. Nelson C. L. Ping The Pennsylvania State University CiteSeerX Archives 2001 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.6.7603 http://sinus.unibe.ch/~eugster/publications/FULL/Walker.2001.QSR.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.6.7603 http://sinus.unibe.ch/~eugster/publications/FULL/Walker.2001.QSR.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://sinus.unibe.ch/~eugster/publications/FULL/Walker.2001.QSR.pdf text 2001 ftciteseerx 2016-01-08T13:56:44Z Moist calcareous tundra has many ecosystem properties analogous to those of the hypothesized Mammoth Steppea or steppe tundra of glacial Beringia, and today it is an important range land for arctic wildlife. Moist calcium-rich tundras are associated with moderately drained "ne-grained arctic soils with relatively high soil pH. Compared to tussock tundra, moist calcareous tundra has 10 times the extractable Ca in the active layer, half the organic layer thickness, and 30% deeper active layers. The vegetation is less shrubby than that of tussock tundra, has twice the vascular-plant species richness, greater habitat diversity at multiple scales, and contains plants with fewer antiherbivory chemicals and more nutrients (particularly calcium). It has some properties that are unlike the hypothesized steppe tundras, including abundant sedges and a mossy understory. Moist calcium-rich tundra is common north of the acidic shrubby southern tundras and south of the sparsely vegetated polar deserts. Successionally, this tundra type occurs between the present-day dry calcareous dune vegetation and tussock tundra. Thus, at least conceptually, moist calcareous tundra is intermediate between the steppe tundra and tussock tundra and provides insights regarding the transitions from cold arid Beringian ecosystems to present-day moist acidic tundra. # 2000 Elsevier Science Ltd. All rights reserved. Text Arctic Tundra Beringia Unknown Arctic |
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Moist calcareous tundra has many ecosystem properties analogous to those of the hypothesized Mammoth Steppea or steppe tundra of glacial Beringia, and today it is an important range land for arctic wildlife. Moist calcium-rich tundras are associated with moderately drained "ne-grained arctic soils with relatively high soil pH. Compared to tussock tundra, moist calcareous tundra has 10 times the extractable Ca in the active layer, half the organic layer thickness, and 30% deeper active layers. The vegetation is less shrubby than that of tussock tundra, has twice the vascular-plant species richness, greater habitat diversity at multiple scales, and contains plants with fewer antiherbivory chemicals and more nutrients (particularly calcium). It has some properties that are unlike the hypothesized steppe tundras, including abundant sedges and a mossy understory. Moist calcium-rich tundra is common north of the acidic shrubby southern tundras and south of the sparsely vegetated polar deserts. Successionally, this tundra type occurs between the present-day dry calcareous dune vegetation and tussock tundra. Thus, at least conceptually, moist calcareous tundra is intermediate between the steppe tundra and tussock tundra and provides insights regarding the transitions from cold arid Beringian ecosystems to present-day moist acidic tundra. # 2000 Elsevier Science Ltd. All rights reserved. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Mail Address Daw D. A. Walker J. G. Bockheim F. S. Chapin Iii W. Eugster F. E. Nelson C. L. Ping |
spellingShingle |
Mail Address Daw D. A. Walker J. G. Bockheim F. S. Chapin Iii W. Eugster F. E. Nelson C. L. Ping Corresponding Author. |
author_facet |
Mail Address Daw D. A. Walker J. G. Bockheim F. S. Chapin Iii W. Eugster F. E. Nelson C. L. Ping |
author_sort |
Mail Address Daw |
title |
Corresponding Author. |
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Corresponding Author. |
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Corresponding Author. |
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Corresponding Author. |
title_full_unstemmed |
Corresponding Author. |
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corresponding author. |
publishDate |
2001 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.6.7603 http://sinus.unibe.ch/~eugster/publications/FULL/Walker.2001.QSR.pdf |
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Arctic |
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Arctic |
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Arctic Tundra Beringia |
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Arctic Tundra Beringia |
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http://sinus.unibe.ch/~eugster/publications/FULL/Walker.2001.QSR.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.6.7603 http://sinus.unibe.ch/~eugster/publications/FULL/Walker.2001.QSR.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766329370859798528 |