NDLI: Papaver croceum Ledeb.: a rare example of an alien species in alpine environments of the Upper Engadine, Switzerland

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Papaver croceum Ledeb.: a rare example of an alien species in alpine environments of the Upper Engadine, Switzerland

Content Provider	Springer Nature Link
Author	Irl, Severin D. H. Jentsch, Anke Walther, Gian Reto
Copyright Year	2013
Abstract	Current research suggests that high-elevation mountain ecosystems are less susceptible to plant invasion than lowland ecosystems. Surprisingly, a number of successful establishments have been documented, although mainly from Mediterranean to tropical mountain systems. Evidence for alpine invaders in temperate mountain environments is scarce, increasing the importance to better understand their invasion process and mechanisms. This study characterizes the habitat of the Central Asian poppy, Papaver croceum, in its introduced range and compares it with a native congener, Papaver aurantiacum, in the subalpine and alpine zone of the Upper Engadine, Switzerland. Vegetation composition and soil characteristics were measured at P. croceum and P. aurantiacum sites in the Upper Engadine region. P. croceum is best characterized as a pioneer species preferring anthropogenic and naturally disturbed habitats on silicate soils ranging between 1,700 and 2,300 m asl in the study area. Species composition, Landolt indicator values for light availability, soil nitrogen and temperature as well as certain soil properties differed significantly between the sites colonized by native and exotic poppy species, although an overlapping zone exists in glacier forefield habitats of the study area. P. croceum did not express typical traits and characteristics of a disruptive invader. In the Morteratsch glacier forefield, however, it has invaded the primary successional stages but is outcompeted in later stages. Presently, a clear ecological separation is apparent between the native and alien congener indicating limited threat to the native congener. However, climate change, land use change and possible hybridization might alter P. croceum’s current status as a non-disruptive invader.
Starting Page	21
Ending Page	30
Page Count	10
File Format	PDF
ISSN	16642201
Journal	Alpine Botany
Volume Number	123
Issue Number	1
e-ISSN	1664221X
Language	English
Publisher	SP Birkhäuser Verlag Basel
Publisher Date	2013-03-05
Publisher Place	Basel
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biological invasion High-elevation ecosystem Papaver croceum Papaver aurantiacum Swiss Alps Mountain invasion Plant Sciences Plant Ecology Ecology Life Sciences Forestry
Content Type	Text
Resource Type	Article
Subject	Plant Science Ecology, Evolution, Behavior and Systematics

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Papaver croceum Ledeb.: a rare example of an alien species in alpine environments of the Upper Engadine, Switzerland