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

Title data

Irl, Severin D. H. ; Jentsch, Anke ; Walther, Gian-Reto:
Papaver croceum LEDEB. : a rare example of an alien species in alpine environments of the Upper Engadine, Switzerland.
In: Alpine Botany. Vol. 123 (2013) Issue 1 . - pp. 21-30.
ISSN 1664-221X
DOI: https://doi.org/10.1007/s00035-013-0111-x

Abstract in another language

Current research suggests that high-elevation mountain ecosystems are lesssusceptible to plant invasion than lowland ecosystems. Surprisingly, a number ofsuccessful establishments have been documented, although mainly fromMediterranean to tropical mountain systems. Evidence for alpine invaders in temperatemountain environments is scarce, increasing the importance to better understand theirinvasion process and mechanisms. This study characterizes the habitat of the CentralAsian poppy, Papaver croceum, in its introduced range and compares it with a nativecongener, Papaver aurantiacum, in the subalpine and alpine zone of the UpperEngadine, Switzerland. Vegetation composition and soil characteristics were measuredat P. croceum and P. aurantiacum sites in the Upper Engadine region. P. croceum isbest characterized as a pioneer species preferring anthropogenic and naturallydisturbed habitats on silicate soils ranging between 1700 and 2300 m a.s.l. in the studyarea. Species composition, Landolt indicator values for light availability, soil nitrogenand temperature as well as certain soil properties differed significantly between thesites colonized by native and exotic poppy species, although an overlapping zoneexists in glacier forefield habitats of the study area. P. croceum did not express typicaltraits and characteristics of a disruptive invader. In the Morteratsch glacier forefield,however, it has invaded the primary successional stages but is outcompeted in laterstages. Presently, a clear ecological separation is apparent between the native andalien congener indicating limited threat to the native congener. However, climatechange, land use change and possible hybridization might alter P. croceum's currentstatus as a non-disruptive invader.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER113423
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Disturbance Ecology
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 24 Apr 2015 11:56
Last Modified: 28 May 2015 10:25
URI: https://eref.uni-bayreuth.de/id/eprint/11403