Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62
ABSTRACT. To support the determination of hydrophytic vegetation in wetland delineations in Alaska, USA, a series of tests were conducted to develop a group of “test positive ” species to be used in a “cryptogam indicator. ” In 2004, non-vascular cryptogam species (bryophytes, lichens, and fungi) fr...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.420.2143 2023-05-15T15:11:54+02:00 Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 Robert W. Lichvar Gary A. Laursen Walter R. Ochs The Pennsylvania State University CiteSeerX Archives 2009 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2143 http://www.lter.uaf.edu/pdf/1198_Lichvar_Laursen_2009.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2143 http://www.lter.uaf.edu/pdf/1198_Lichvar_Laursen_2009.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.lter.uaf.edu/pdf/1198_Lichvar_Laursen_2009.pdf Key words Alaska wetlands delineation bryophytes indicators mosses Alaskan wetland supplement mushrooms text 2009 ftciteseerx 2016-01-08T03:58:44Z ABSTRACT. To support the determination of hydrophytic vegetation in wetland delineations in Alaska, USA, a series of tests were conducted to develop a group of “test positive ” species to be used in a “cryptogam indicator. ” In 2004, non-vascular cryptogam species (bryophytes, lichens, and fungi) from Interior and South-Central Alaska in the vicinities of Fairbanks and Anchorage were collected at a series of ten 50 × 50 cm plots along two 30 m transects in each of six upland and five wetland sites. Nineteen moss and liverwort species were selected from 86 species surveyed to test for wetland fidelity. In 2005, a plot-based analysis of frequency and cover data yielded a revised list of 17 bryophyte species that were specific to wetland communities dominated by black spruce, Picea mariana (P. Mill.) B.S.P. Fungi and lichens were found to be inadequate wetland indicators in the sampled locations because the lichen species were sparsely distributed and the fungi were too ephemeral. The cryptogam indicator was thus restricted to bryophytes. Also in 2005, bryophytes were analyzed for their presence on microtopographic positions within the landscape, including tops of hummocks and hollows at the bases of hummocks. Upland bryophyte species were found on hummock tops inside the wetland boundary, but were not abundant in the hollows (p < 0.05). The fidelity of the species selected for use in the cryptogam indicator was tested. It was determined that if more than 50 % of all bryophyte cover present in hollows is composed of one or more of the 17 wetland bryophytes tested in 2005, then vascular vegetation can be considered to be hydrophytic (p < 0.001). Text Arctic Alaska Unknown Anchorage Arctic Fairbanks |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Key words Alaska wetlands delineation bryophytes indicators mosses Alaskan wetland supplement mushrooms |
spellingShingle |
Key words Alaska wetlands delineation bryophytes indicators mosses Alaskan wetland supplement mushrooms Robert W. Lichvar Gary A. Laursen Walter R. Ochs Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 |
topic_facet |
Key words Alaska wetlands delineation bryophytes indicators mosses Alaskan wetland supplement mushrooms |
description |
ABSTRACT. To support the determination of hydrophytic vegetation in wetland delineations in Alaska, USA, a series of tests were conducted to develop a group of “test positive ” species to be used in a “cryptogam indicator. ” In 2004, non-vascular cryptogam species (bryophytes, lichens, and fungi) from Interior and South-Central Alaska in the vicinities of Fairbanks and Anchorage were collected at a series of ten 50 × 50 cm plots along two 30 m transects in each of six upland and five wetland sites. Nineteen moss and liverwort species were selected from 86 species surveyed to test for wetland fidelity. In 2005, a plot-based analysis of frequency and cover data yielded a revised list of 17 bryophyte species that were specific to wetland communities dominated by black spruce, Picea mariana (P. Mill.) B.S.P. Fungi and lichens were found to be inadequate wetland indicators in the sampled locations because the lichen species were sparsely distributed and the fungi were too ephemeral. The cryptogam indicator was thus restricted to bryophytes. Also in 2005, bryophytes were analyzed for their presence on microtopographic positions within the landscape, including tops of hummocks and hollows at the bases of hummocks. Upland bryophyte species were found on hummock tops inside the wetland boundary, but were not abundant in the hollows (p < 0.05). The fidelity of the species selected for use in the cryptogam indicator was tested. It was determined that if more than 50 % of all bryophyte cover present in hollows is composed of one or more of the 17 wetland bryophytes tested in 2005, then vascular vegetation can be considered to be hydrophytic (p < 0.001). |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Robert W. Lichvar Gary A. Laursen Walter R. Ochs |
author_facet |
Robert W. Lichvar Gary A. Laursen Walter R. Ochs |
author_sort |
Robert W. Lichvar |
title |
Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 |
title_short |
Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 |
title_full |
Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 |
title_fullStr |
Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 |
title_full_unstemmed |
Selecting and testing cryptogam species for use in wetland delineation in Alaska. Arctic 62 |
title_sort |
selecting and testing cryptogam species for use in wetland delineation in alaska. arctic 62 |
publishDate |
2009 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2143 http://www.lter.uaf.edu/pdf/1198_Lichvar_Laursen_2009.pdf |
geographic |
Anchorage Arctic Fairbanks |
geographic_facet |
Anchorage Arctic Fairbanks |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
http://www.lter.uaf.edu/pdf/1198_Lichvar_Laursen_2009.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.2143 http://www.lter.uaf.edu/pdf/1198_Lichvar_Laursen_2009.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766342685329719296 |