Trees in the desert: Reproduction and genetic structure of fragmented Ulmus pumila forests in Mongolian drylands

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Trees in the desert: Reproduction and genetic structure of fragmented Ulmus pumila forests in Mongolian drylands. / Wesche, K.; Walther, D.; von Wehrden, H. et al.
in: Flora, Jahrgang 206, Nr. 2, 02.2011, S. 91-99.

Publikation: Beiträge in ZeitschriftenZeitschriftenaufsätzeForschungbegutachtet

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Wesche K, Walther D, von Wehrden H, Hensen I. Trees in the desert: Reproduction and genetic structure of fragmented Ulmus pumila forests in Mongolian drylands. Flora. 2011 Feb;206(2):91-99. doi: 10.1016/j.flora.2010.01.012

Bibtex

@article{a1d02afbcef940e7af92367fe5d08fd5,
title = "Trees in the desert: Reproduction and genetic structure of fragmented Ulmus pumila forests in Mongolian drylands",
abstract = "The potential natural distribution of deciduous forests in Central Asia is the subject of ongoing discussions. Ulmus pumila (Siberian elm) is the only tree species occurring in southern and south-eastern Mongolia. In the semi-arid Mongolian Gobi, the species is restricted to ravines and beds of semi-temporary rivers. Compared to zonal occurrences in moister northern Mongolia, elm trees in the Gobi were found to be larger, in spite of their slower growth. Recruitment was very rare in the field although germination studies revealed that seeds were viable, survived osmotic stress, and were tolerant of repeated cycles of moistening and drying. Thus, they should be capable of germination in episodically flooded river beds. Fingerprinting revealed that clonal growth is of negligible importance in the Gobi as almost all U. pumila individuals studied constituted separate genets. Given that many trees were <100 years old and must have become established under current climatic conditions, we infer that the current lack of recruitment is likely to be caused by grazing impact. Our data imply that Ulmus pumila could potentially be much more common in the drylands of southern Mongolia and northern China.",
keywords = "Biology, Clonality, Distribution map, Genetic structure, Germination, Gobi desert, deciduous forest, desert, DNA fingerprinting, flooding, genetic structure, germination, grazing, habitat fragmentation, recruitment (population dynamics), reproductive biology, riparian forest, semiarid region, Gobi Desert, Mongolia, Ulmus, Ulmus pumila",
author = "K. Wesche and D. Walther and {von Wehrden}, H. and I. Hensen",
year = "2011",
month = feb,
doi = "10.1016/j.flora.2010.01.012",
language = "English",
volume = "206",
pages = "91--99",
journal = "Flora",
issn = "0367-2530",
publisher = "Elsevier GmbH",
number = "2",

}

RIS

TY - JOUR

T1 - Trees in the desert

T2 - Reproduction and genetic structure of fragmented Ulmus pumila forests in Mongolian drylands

AU - Wesche, K.

AU - Walther, D.

AU - von Wehrden, H.

AU - Hensen, I.

PY - 2011/2

Y1 - 2011/2

N2 - The potential natural distribution of deciduous forests in Central Asia is the subject of ongoing discussions. Ulmus pumila (Siberian elm) is the only tree species occurring in southern and south-eastern Mongolia. In the semi-arid Mongolian Gobi, the species is restricted to ravines and beds of semi-temporary rivers. Compared to zonal occurrences in moister northern Mongolia, elm trees in the Gobi were found to be larger, in spite of their slower growth. Recruitment was very rare in the field although germination studies revealed that seeds were viable, survived osmotic stress, and were tolerant of repeated cycles of moistening and drying. Thus, they should be capable of germination in episodically flooded river beds. Fingerprinting revealed that clonal growth is of negligible importance in the Gobi as almost all U. pumila individuals studied constituted separate genets. Given that many trees were <100 years old and must have become established under current climatic conditions, we infer that the current lack of recruitment is likely to be caused by grazing impact. Our data imply that Ulmus pumila could potentially be much more common in the drylands of southern Mongolia and northern China.

AB - The potential natural distribution of deciduous forests in Central Asia is the subject of ongoing discussions. Ulmus pumila (Siberian elm) is the only tree species occurring in southern and south-eastern Mongolia. In the semi-arid Mongolian Gobi, the species is restricted to ravines and beds of semi-temporary rivers. Compared to zonal occurrences in moister northern Mongolia, elm trees in the Gobi were found to be larger, in spite of their slower growth. Recruitment was very rare in the field although germination studies revealed that seeds were viable, survived osmotic stress, and were tolerant of repeated cycles of moistening and drying. Thus, they should be capable of germination in episodically flooded river beds. Fingerprinting revealed that clonal growth is of negligible importance in the Gobi as almost all U. pumila individuals studied constituted separate genets. Given that many trees were <100 years old and must have become established under current climatic conditions, we infer that the current lack of recruitment is likely to be caused by grazing impact. Our data imply that Ulmus pumila could potentially be much more common in the drylands of southern Mongolia and northern China.

KW - Biology

KW - Clonality

KW - Distribution map

KW - Genetic structure

KW - Germination

KW - Gobi desert

KW - deciduous forest

KW - desert

KW - DNA fingerprinting

KW - flooding

KW - genetic structure

KW - germination

KW - grazing

KW - habitat fragmentation

KW - recruitment (population dynamics)

KW - reproductive biology

KW - riparian forest

KW - semiarid region

KW - Gobi Desert

KW - Mongolia

KW - Ulmus

KW - Ulmus pumila

UR - http://www.scopus.com/inward/record.url?scp=79551491505&partnerID=8YFLogxK

U2 - 10.1016/j.flora.2010.01.012

DO - 10.1016/j.flora.2010.01.012

M3 - Journal articles

VL - 206

SP - 91

EP - 99

JO - Flora

JF - Flora

SN - 0367-2530

IS - 2

ER -

DOI

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