The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration?
Published version available at: http://nhm2.uio.no/lichens/nordiclichensociety/ Allocetraria madreporiformis is a small, finger-like, fruticose lichen with isolated occurrences in the inner fiord section of the long, straight fiord Wijdefjorden in Svalbard. Several new localities are added and mappe...
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ftunivtroemsoe:oai:munin.uit.no:10037/19514 2023-05-15T14:24:30+02:00 The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? Elvebakk, Arve Bjerke, Jarle W. Nilsen, Lennart 2018-01-29 https://hdl.handle.net/10037/19514 eng eng Graphis Scripta Elvebakk A, Bjerke JW, Nilsen L. The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration?. Graphis Scripta. 2018;30(1):1-11 FRIDAID 1555774 0901-7593 https://hdl.handle.net/10037/19514 openAccess Copyright 2018 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2018 ftunivtroemsoe 2021-06-25T17:55:44Z Published version available at: http://nhm2.uio.no/lichens/nordiclichensociety/ Allocetraria madreporiformis is a small, finger-like, fruticose lichen with isolated occurrences in the inner fiord section of the long, straight fiord Wijdefjorden in Svalbard. Several new localities are added and mapped here, and we show that the species is confined to exclusive high-arctic steppe habitats on finetextured, moderately alkaline soil, exposed to wind erosion and aeolian transport of silt and sand. It avoids the most saline steppes and adjacent tundra areas, as indicated by numerous pH samples of mineral soils from sites with and without occurrences of A. madreporiformis . In this open habitat, all otherwise common arcticalpine fruticose lichen species were absent or extremely rare, and a cryptogamic cover was very depauperate. On Svalbard, this species is an exclusive character species of the steppe areas in Inner Wijdefjorden National Park. The genus Allocetraria is strongly centred in the Sino-Himalayan area. It is discussed here that it probably evolved as a response to the very extensive new habitats formed during a series of Qinghai-Tibetan Plateau uplift and orogeny events taking place 25–1.6 Ma. This and other aspects affecting current classification alternatives of cetrarioid lichens are also discussed. The habitat preferences of A. madreporiformis appear to have been largely defined by the conditions of its probable area of origin in steppe-like habitats of the northern part of the Qinghai-Tibetan Plateau. Article in Journal/Newspaper Arctic Arctic Svalbard Tundra Wijdefjord* University of Tromsø: Munin Open Research Archive Arctic Svalbard Wijdefjorden ENVELOPE(15.569,15.569,79.543,79.543) |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Elvebakk, Arve Bjerke, Jarle W. Nilsen, Lennart The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Published version available at: http://nhm2.uio.no/lichens/nordiclichensociety/ Allocetraria madreporiformis is a small, finger-like, fruticose lichen with isolated occurrences in the inner fiord section of the long, straight fiord Wijdefjorden in Svalbard. Several new localities are added and mapped here, and we show that the species is confined to exclusive high-arctic steppe habitats on finetextured, moderately alkaline soil, exposed to wind erosion and aeolian transport of silt and sand. It avoids the most saline steppes and adjacent tundra areas, as indicated by numerous pH samples of mineral soils from sites with and without occurrences of A. madreporiformis . In this open habitat, all otherwise common arcticalpine fruticose lichen species were absent or extremely rare, and a cryptogamic cover was very depauperate. On Svalbard, this species is an exclusive character species of the steppe areas in Inner Wijdefjorden National Park. The genus Allocetraria is strongly centred in the Sino-Himalayan area. It is discussed here that it probably evolved as a response to the very extensive new habitats formed during a series of Qinghai-Tibetan Plateau uplift and orogeny events taking place 25–1.6 Ma. This and other aspects affecting current classification alternatives of cetrarioid lichens are also discussed. The habitat preferences of A. madreporiformis appear to have been largely defined by the conditions of its probable area of origin in steppe-like habitats of the northern part of the Qinghai-Tibetan Plateau. |
format |
Article in Journal/Newspaper |
author |
Elvebakk, Arve Bjerke, Jarle W. Nilsen, Lennart |
author_facet |
Elvebakk, Arve Bjerke, Jarle W. Nilsen, Lennart |
author_sort |
Elvebakk, Arve |
title |
The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? |
title_short |
The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? |
title_full |
The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? |
title_fullStr |
The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? |
title_full_unstemmed |
The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration? |
title_sort |
lichen allocetraria madreporiformis in high-arctic steppes on svalbard: a result of out-of-tibet migration? |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/19514 |
long_lat |
ENVELOPE(15.569,15.569,79.543,79.543) |
geographic |
Arctic Svalbard Wijdefjorden |
geographic_facet |
Arctic Svalbard Wijdefjorden |
genre |
Arctic Arctic Svalbard Tundra Wijdefjord* |
genre_facet |
Arctic Arctic Svalbard Tundra Wijdefjord* |
op_relation |
Graphis Scripta Elvebakk A, Bjerke JW, Nilsen L. The lichen Allocetraria madreporiformis in high-arctic steppes on Svalbard: a result of out-of-Tibet migration?. Graphis Scripta. 2018;30(1):1-11 FRIDAID 1555774 0901-7593 https://hdl.handle.net/10037/19514 |
op_rights |
openAccess Copyright 2018 The Author(s) |
_version_ |
1766296922521337856 |