The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate
The isolated occurrences of forest plants in the desert mountains of southern Mongolia raise questions as to the mode of their dispersal and the age and direction of former range connections. For species without a possibility of long distance dispersal, a once continuous distribution over the southe...
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ftunivnebraskali:oai:digitalcommons.unl.edu:biolmongol-1133 2023-11-12T04:27:10+01:00 The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate Jäger, Eckehart Johannes 2005-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/biolmongol/134 https://digitalcommons.unl.edu/context/biolmongol/article/1133/viewcontent/Erforschung_band_9_05_0266_Mongolei_p237_245.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/biolmongol/134 https://digitalcommons.unl.edu/context/biolmongol/article/1133/viewcontent/Erforschung_band_9_05_0266_Mongolei_p237_245.pdf Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 Forest plants Relics Southern Mongolia Paleoclimate Disjunction Dispersal Animal Sciences Asian Studies Biodiversity Environmental Sciences Geography Nature and Society Relations Other Animal Sciences text 2005 ftunivnebraskali 2023-10-30T11:27:06Z The isolated occurrences of forest plants in the desert mountains of southern Mongolia raise questions as to the mode of their dispersal and the age and direction of former range connections. For species without a possibility of long distance dispersal, a once continuous distribution over the southern Mongolian mountain chains must be assumed. To the Gurvan Saykhan mountains, the forest plants immigrated from the west. Nevertheless their distribution types are eastern Asiatic, or else Eurasiatic with an eastern center of gravity. This shows that the seasonal type of the recent climate with summer rains in eastern Asia influences vegetation composition. The climatic conditions at the time of continuous distribution should include a precipitation sum about 200–300 mm higher than today, as can be judged from the climatic envelope of the recent distribution of these forest plants. This deviates very much from the ’Atlas of paleoclimates,’ but it is corroborated by radiocarbon-dated macrofossils of Picea, Pinus sibirica and Abies found by Russian authors in middle holocene deposits in the Gobi Altay. Between 4,000 and 3,500 yr BP, when the dark taiga forests disappeared due to the aridization in southern Mongolia, also the forest plants in the Gurvan Saykhan became isolated. Text taiga University of Nebraska-Lincoln: DigitalCommons@UNL |
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University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Forest plants Relics Southern Mongolia Paleoclimate Disjunction Dispersal Animal Sciences Asian Studies Biodiversity Environmental Sciences Geography Nature and Society Relations Other Animal Sciences |
spellingShingle |
Forest plants Relics Southern Mongolia Paleoclimate Disjunction Dispersal Animal Sciences Asian Studies Biodiversity Environmental Sciences Geography Nature and Society Relations Other Animal Sciences Jäger, Eckehart Johannes The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate |
topic_facet |
Forest plants Relics Southern Mongolia Paleoclimate Disjunction Dispersal Animal Sciences Asian Studies Biodiversity Environmental Sciences Geography Nature and Society Relations Other Animal Sciences |
description |
The isolated occurrences of forest plants in the desert mountains of southern Mongolia raise questions as to the mode of their dispersal and the age and direction of former range connections. For species without a possibility of long distance dispersal, a once continuous distribution over the southern Mongolian mountain chains must be assumed. To the Gurvan Saykhan mountains, the forest plants immigrated from the west. Nevertheless their distribution types are eastern Asiatic, or else Eurasiatic with an eastern center of gravity. This shows that the seasonal type of the recent climate with summer rains in eastern Asia influences vegetation composition. The climatic conditions at the time of continuous distribution should include a precipitation sum about 200–300 mm higher than today, as can be judged from the climatic envelope of the recent distribution of these forest plants. This deviates very much from the ’Atlas of paleoclimates,’ but it is corroborated by radiocarbon-dated macrofossils of Picea, Pinus sibirica and Abies found by Russian authors in middle holocene deposits in the Gobi Altay. Between 4,000 and 3,500 yr BP, when the dark taiga forests disappeared due to the aridization in southern Mongolia, also the forest plants in the Gurvan Saykhan became isolated. |
format |
Text |
author |
Jäger, Eckehart Johannes |
author_facet |
Jäger, Eckehart Johannes |
author_sort |
Jäger, Eckehart Johannes |
title |
The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate |
title_short |
The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate |
title_full |
The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate |
title_fullStr |
The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate |
title_full_unstemmed |
The Occurrence of Forest Plants in the Desert Mountains of Mongolia and Their Bearing on the History of the Climate |
title_sort |
occurrence of forest plants in the desert mountains of mongolia and their bearing on the history of the climate |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2005 |
url |
https://digitalcommons.unl.edu/biolmongol/134 https://digitalcommons.unl.edu/context/biolmongol/article/1133/viewcontent/Erforschung_band_9_05_0266_Mongolei_p237_245.pdf |
genre |
taiga |
genre_facet |
taiga |
op_source |
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 |
op_relation |
https://digitalcommons.unl.edu/biolmongol/134 https://digitalcommons.unl.edu/context/biolmongol/article/1133/viewcontent/Erforschung_band_9_05_0266_Mongolei_p237_245.pdf |
_version_ |
1782340870896353280 |