Germination performance of native and non-native Ulmus pumila populations

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Germination performance of native and non-native Ulmus pumila populations. / Hirsch, Heidi; Wypior, Catherina; von Wehrden, Henrik et al.
In: NeoBiota, Vol. 15, No. 15, 14.12.2012, p. 53-68.

Research output: Journal contributionsJournal articlesResearchpeer-review

Harvard

Hirsch, H, Wypior, C, von Wehrden, H, Wesche, K, Renison, D & Hensen, I 2012, 'Germination performance of native and non-native Ulmus pumila populations', NeoBiota, vol. 15, no. 15, pp. 53-68. https://doi.org/10.3897/neobiota.15.4057

APA

Vancouver

Hirsch H, Wypior C, von Wehrden H, Wesche K, Renison D, Hensen I. Germination performance of native and non-native Ulmus pumila populations. NeoBiota. 2012 Dec 14;15(15):53-68. doi: 10.3897/neobiota.15.4057

Bibtex

@article{7f6400b74b7d44f9bcfe0f328b5ae6a0,
title = "Germination performance of native and non-native Ulmus pumila populations",
abstract = "Germination is a crucial step for invasive plants to extend their distribution under different environmental conditions in a new range. Therefore, information on germination characteristics of invasive plant species provides invaluable knowledge about the factors which might contribute to the invasion success. Moreover, intra-specific comparisons under controlled conditions will show if different responses between non-native and native populations are caused by evolutionary changes or by phenotypic plasticity towards different environmental influences. This paper focuses on the germination of native and non-native Ulmus pumila populations. We expected that non-native populations would be characterized by their higher final germination percentage and enhanced germination rate, which might indicate an influence due to corresponding climatic conditions. Germination experiments with a moderate and a warm temperature treatment did not reveal significant differences in final germination percentage. However, seeds from the North American non-native range germinated significantly faster than native seeds (p < 0.001). Additionally, mean time to germination in both ranges was significantly negatively correlated with annual precipitation (p = 0.022). At the same time, this relationship is stronger in the native range whereas mean time to germination in non-native populations seems to be less influenced by climatic conditions. Different germination responses of the North American populations could be caused by a fast evolutionary change mediating a higher tolerance to current climatic conditions in the non-native range. However, our findings could also be caused by artificial selection during the introduction process and extensive planting of Ulmus pumila in its non-native range. Nevertheless, we assume that the faster germination rate of non-native populations is one potential explanation for the invasion success of Ulmus pumila in its new range since it might provide a competitive advantage during colonization of new sites. ",
keywords = "Biology, Ecosystems Research",
author = "Heidi Hirsch and Catherina Wypior and {von Wehrden}, Henrik and Karsten Wesche and Daniel Renison and Isabell Hensen",
year = "2012",
month = dec,
day = "14",
doi = "10.3897/neobiota.15.4057",
language = "English",
volume = "15",
pages = "53--68",
journal = "NeoBiota",
issn = "1619-0033",
publisher = "Pensoft Publishers",
number = "15",

}

RIS

TY - JOUR

T1 - Germination performance of native and non-native Ulmus pumila populations

AU - Hirsch, Heidi

AU - Wypior, Catherina

AU - von Wehrden, Henrik

AU - Wesche, Karsten

AU - Renison, Daniel

AU - Hensen, Isabell

PY - 2012/12/14

Y1 - 2012/12/14

N2 - Germination is a crucial step for invasive plants to extend their distribution under different environmental conditions in a new range. Therefore, information on germination characteristics of invasive plant species provides invaluable knowledge about the factors which might contribute to the invasion success. Moreover, intra-specific comparisons under controlled conditions will show if different responses between non-native and native populations are caused by evolutionary changes or by phenotypic plasticity towards different environmental influences. This paper focuses on the germination of native and non-native Ulmus pumila populations. We expected that non-native populations would be characterized by their higher final germination percentage and enhanced germination rate, which might indicate an influence due to corresponding climatic conditions. Germination experiments with a moderate and a warm temperature treatment did not reveal significant differences in final germination percentage. However, seeds from the North American non-native range germinated significantly faster than native seeds (p < 0.001). Additionally, mean time to germination in both ranges was significantly negatively correlated with annual precipitation (p = 0.022). At the same time, this relationship is stronger in the native range whereas mean time to germination in non-native populations seems to be less influenced by climatic conditions. Different germination responses of the North American populations could be caused by a fast evolutionary change mediating a higher tolerance to current climatic conditions in the non-native range. However, our findings could also be caused by artificial selection during the introduction process and extensive planting of Ulmus pumila in its non-native range. Nevertheless, we assume that the faster germination rate of non-native populations is one potential explanation for the invasion success of Ulmus pumila in its new range since it might provide a competitive advantage during colonization of new sites.

AB - Germination is a crucial step for invasive plants to extend their distribution under different environmental conditions in a new range. Therefore, information on germination characteristics of invasive plant species provides invaluable knowledge about the factors which might contribute to the invasion success. Moreover, intra-specific comparisons under controlled conditions will show if different responses between non-native and native populations are caused by evolutionary changes or by phenotypic plasticity towards different environmental influences. This paper focuses on the germination of native and non-native Ulmus pumila populations. We expected that non-native populations would be characterized by their higher final germination percentage and enhanced germination rate, which might indicate an influence due to corresponding climatic conditions. Germination experiments with a moderate and a warm temperature treatment did not reveal significant differences in final germination percentage. However, seeds from the North American non-native range germinated significantly faster than native seeds (p < 0.001). Additionally, mean time to germination in both ranges was significantly negatively correlated with annual precipitation (p = 0.022). At the same time, this relationship is stronger in the native range whereas mean time to germination in non-native populations seems to be less influenced by climatic conditions. Different germination responses of the North American populations could be caused by a fast evolutionary change mediating a higher tolerance to current climatic conditions in the non-native range. However, our findings could also be caused by artificial selection during the introduction process and extensive planting of Ulmus pumila in its non-native range. Nevertheless, we assume that the faster germination rate of non-native populations is one potential explanation for the invasion success of Ulmus pumila in its new range since it might provide a competitive advantage during colonization of new sites.

KW - Biology

KW - Ecosystems Research

UR - https://www.mendeley.com/catalogue/d8ca9e51-4668-321d-9559-2ed9c9fa737e/

U2 - 10.3897/neobiota.15.4057

DO - 10.3897/neobiota.15.4057

M3 - Journal articles

VL - 15

SP - 53

EP - 68

JO - NeoBiota

JF - NeoBiota

SN - 1619-0033

IS - 15

ER -

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