(Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species
Usnea species of the Neuropogon group are amongst the most widespread and abundant macrolichens in Antarctic regions. Four principal species, U. antarctica, U. aurantiaco-atra, U. sphacelata and U. subantarctica, have been described on morphological grounds. However, identification to species level...
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Format: | Dataset |
Language: | English |
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PANGAEA
2007
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.858324 https://doi.org/10.1594/PANGAEA.858324 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.858324 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antarctica Antarctic Peninsula Area/locality Biological sample BIOS Carlini_Base_C1 Carlini/Jubany Station Chimborazo_Area Ecuador Event label Falkland Islands East Falkland East of Stanley Jubany Jubany_Station_C1 Lapataia_Bay Latitude of event Livingston_Island_Station Longitude of event Mars_Oasis MULT Multiple investigations Potter Cove King George Island Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Research station Rothera_St RS Sampling date SPP1158 Stanley_Area Svalbard Tierra del Fuego South America Usnea acromelana Usnea antarctica Usnea aurantiacoatra Usnea sphacelata Usnea spp. Usnea subantarctica Usnea trachycarpa |
spellingShingle |
Antarctica Antarctic Peninsula Area/locality Biological sample BIOS Carlini_Base_C1 Carlini/Jubany Station Chimborazo_Area Ecuador Event label Falkland Islands East Falkland East of Stanley Jubany Jubany_Station_C1 Lapataia_Bay Latitude of event Livingston_Island_Station Longitude of event Mars_Oasis MULT Multiple investigations Potter Cove King George Island Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Research station Rothera_St RS Sampling date SPP1158 Stanley_Area Svalbard Tierra del Fuego South America Usnea acromelana Usnea antarctica Usnea aurantiacoatra Usnea sphacelata Usnea spp. Usnea subantarctica Usnea trachycarpa Seymour, Fabian A Crittenden, Peter D Wirtz, Nora Øvstedal, Dag O Dyer, Paul S Lumbsch, H Thorsten (Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species |
topic_facet |
Antarctica Antarctic Peninsula Area/locality Biological sample BIOS Carlini_Base_C1 Carlini/Jubany Station Chimborazo_Area Ecuador Event label Falkland Islands East Falkland East of Stanley Jubany Jubany_Station_C1 Lapataia_Bay Latitude of event Livingston_Island_Station Longitude of event Mars_Oasis MULT Multiple investigations Potter Cove King George Island Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Research station Rothera_St RS Sampling date SPP1158 Stanley_Area Svalbard Tierra del Fuego South America Usnea acromelana Usnea antarctica Usnea aurantiacoatra Usnea sphacelata Usnea spp. Usnea subantarctica Usnea trachycarpa |
description |
Usnea species of the Neuropogon group are amongst the most widespread and abundant macrolichens in Antarctic regions. Four principal species, U. antarctica, U. aurantiaco-atra, U. sphacelata and U. subantarctica, have been described on morphological grounds. However, identification to species level is often difficult and atypical morphologies frequently arise. Over 400 specimens were collected on the Antarctic Peninsula and Falkland Islands. Both morphological and molecular characters (ITS and RPB1) were used to compare samples to clarify taxonomic relationships. Morphological characteristics used included presence of apothecia, apothecial rays, soredia, papillae, fibrils, pigmentation and the diameter of the central axis as a proportion of branch diameter. Results revealed a very close relationship between U. antarctica and U. aurantiaco-atra, suggesting that they might constitute a species pair or be conspecific. Usnea sphacelata was comprised of at least two genetically distinct groups with no clear differences in morphology. One group included the first reported fertile specimen of this species. Usnea subantarctica was phylogenetically distinct from the other main Antarctic Usnea species, but clustered with U. trachycarpa. Genetic variation was evident within all species although there was no clear correlation between geographic origin and genetic relatedness. Phylogenetic analyses indicated that species circumscription in the Neuropogon group needs revision, with the principal species being non-monophyletic. None of the morphological characters, or groups of characters, used in this study proved to be completely unambiguous markers for a single species. However, axis thickness was supported as being informative for the identification of monophyletic lineages within the group. |
format |
Dataset |
author |
Seymour, Fabian A Crittenden, Peter D Wirtz, Nora Øvstedal, Dag O Dyer, Paul S Lumbsch, H Thorsten |
author_facet |
Seymour, Fabian A Crittenden, Peter D Wirtz, Nora Øvstedal, Dag O Dyer, Paul S Lumbsch, H Thorsten |
author_sort |
Seymour, Fabian A |
title |
(Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species |
title_short |
(Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species |
title_full |
(Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species |
title_fullStr |
(Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species |
title_full_unstemmed |
(Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species |
title_sort |
(table 2) collection sites and number of specimens of usnea subgenus neuropogon species |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.858324 https://doi.org/10.1594/PANGAEA.858324 |
op_coverage |
MEDIAN LATITUDE: -36.682202 * MEDIAN LONGITUDE: -55.418510 * SOUTH-BOUND LATITUDE: -71.866700 * WEST-BOUND LONGITUDE: -78.870000 * NORTH-BOUND LATITUDE: 78.900000 * EAST-BOUND LONGITUDE: 18.010000 * DATE/TIME START: 2001-11-01T00:00:00 * DATE/TIME END: 2003-01-01T00:00:00 * MINIMUM ELEVATION: 20.0 m * MAXIMUM ELEVATION: 20.0 m |
long_lat |
ENVELOPE(-78.870000,18.010000,78.900000,-71.866700) |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica King George Island Sea ice Svalbard Usnea antarctica Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica King George Island Sea ice Svalbard Usnea antarctica Tierra del Fuego |
op_source |
Supplement to: Seymour, Fabian A; Crittenden, Peter D; Wirtz, Nora; Øvstedal, Dag O; Dyer, Paul S; Lumbsch, H Thorsten (2007): Phylogenetic and morphological analysis of Antarctic lichen-forming Usnea species in the group Neuropogon. Antarctic Science, 19(1), 71-82, https://doi.org/10.1017/S0954102007000107 |
op_relation |
Øvstedal, Dag O; Smith, R (2001): Lichens of Antarctica and South Georgia. A guide to their identification and ecology. Cambridge University Press, Cambridge, 411 pp Walker, F Joy (1985): The lichen genus Usnea subgenus Neuropogon. Bulletin of the British Museum (Natural History), Botany, 130 pp https://doi.pangaea.de/10.1594/PANGAEA.858324 https://doi.org/10.1594/PANGAEA.858324 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.85832410.1017/S0954102007000107 |
_version_ |
1810490158101823488 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.858324 2024-09-15T17:43:16+00:00 (Table 2) Collection sites and number of specimens of Usnea subgenus Neuropogon species Seymour, Fabian A Crittenden, Peter D Wirtz, Nora Øvstedal, Dag O Dyer, Paul S Lumbsch, H Thorsten MEDIAN LATITUDE: -36.682202 * MEDIAN LONGITUDE: -55.418510 * SOUTH-BOUND LATITUDE: -71.866700 * WEST-BOUND LONGITUDE: -78.870000 * NORTH-BOUND LATITUDE: 78.900000 * EAST-BOUND LONGITUDE: 18.010000 * DATE/TIME START: 2001-11-01T00:00:00 * DATE/TIME END: 2003-01-01T00:00:00 * MINIMUM ELEVATION: 20.0 m * MAXIMUM ELEVATION: 20.0 m 2007 text/tab-separated-values, 72 data points https://doi.pangaea.de/10.1594/PANGAEA.858324 https://doi.org/10.1594/PANGAEA.858324 en eng PANGAEA Øvstedal, Dag O; Smith, R (2001): Lichens of Antarctica and South Georgia. A guide to their identification and ecology. Cambridge University Press, Cambridge, 411 pp Walker, F Joy (1985): The lichen genus Usnea subgenus Neuropogon. Bulletin of the British Museum (Natural History), Botany, 130 pp https://doi.pangaea.de/10.1594/PANGAEA.858324 https://doi.org/10.1594/PANGAEA.858324 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Seymour, Fabian A; Crittenden, Peter D; Wirtz, Nora; Øvstedal, Dag O; Dyer, Paul S; Lumbsch, H Thorsten (2007): Phylogenetic and morphological analysis of Antarctic lichen-forming Usnea species in the group Neuropogon. Antarctic Science, 19(1), 71-82, https://doi.org/10.1017/S0954102007000107 Antarctica Antarctic Peninsula Area/locality Biological sample BIOS Carlini_Base_C1 Carlini/Jubany Station Chimborazo_Area Ecuador Event label Falkland Islands East Falkland East of Stanley Jubany Jubany_Station_C1 Lapataia_Bay Latitude of event Livingston_Island_Station Longitude of event Mars_Oasis MULT Multiple investigations Potter Cove King George Island Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Research station Rothera_St RS Sampling date SPP1158 Stanley_Area Svalbard Tierra del Fuego South America Usnea acromelana Usnea antarctica Usnea aurantiacoatra Usnea sphacelata Usnea spp. Usnea subantarctica Usnea trachycarpa dataset 2007 ftpangaea https://doi.org/10.1594/PANGAEA.85832410.1017/S0954102007000107 2024-07-24T02:31:33Z Usnea species of the Neuropogon group are amongst the most widespread and abundant macrolichens in Antarctic regions. Four principal species, U. antarctica, U. aurantiaco-atra, U. sphacelata and U. subantarctica, have been described on morphological grounds. However, identification to species level is often difficult and atypical morphologies frequently arise. Over 400 specimens were collected on the Antarctic Peninsula and Falkland Islands. Both morphological and molecular characters (ITS and RPB1) were used to compare samples to clarify taxonomic relationships. Morphological characteristics used included presence of apothecia, apothecial rays, soredia, papillae, fibrils, pigmentation and the diameter of the central axis as a proportion of branch diameter. Results revealed a very close relationship between U. antarctica and U. aurantiaco-atra, suggesting that they might constitute a species pair or be conspecific. Usnea sphacelata was comprised of at least two genetically distinct groups with no clear differences in morphology. One group included the first reported fertile specimen of this species. Usnea subantarctica was phylogenetically distinct from the other main Antarctic Usnea species, but clustered with U. trachycarpa. Genetic variation was evident within all species although there was no clear correlation between geographic origin and genetic relatedness. Phylogenetic analyses indicated that species circumscription in the Neuropogon group needs revision, with the principal species being non-monophyletic. None of the morphological characters, or groups of characters, used in this study proved to be completely unambiguous markers for a single species. However, axis thickness was supported as being informative for the identification of monophyletic lineages within the group. Dataset Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica King George Island Sea ice Svalbard Usnea antarctica Tierra del Fuego PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-78.870000,18.010000,78.900000,-71.866700) |