Irl, S; Jentsch, A; Walther, GR: Papaver croceum LEDEB. - a rare example of an alien species in alpine environments of the Upper Engadine, Switzerland, Alpine Botany, 123(1), 21-30 (2013), doi:10.1007/s00035-013-0111-x
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 1700 and 2300 m a.s.l. 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.
Aktuelle Termine

Fr. 10.07.2020 aktuell
12th BayCEER Workshop 2020: "Call for Abstracts" geöffnet
BayCEER-Kolloquium:
Do. 22.10.2020
Extreme redox oscillations in freshwater re-flooded acid sulfate soil wetlands: Effects on Fe, S, and trace metals geochemical behavior
Do. 29.10.2020
Dissolved organic matter quality in differently managed forest ecosystems
Do. 05.11.2020
Signaling of rhizosphere microbiome: key for plant health, development and nutrition
Workshop:
Do. 29.10.2020
Neuer Termin: BayCEER Workshop 2020
BayCEER Blog
13.01.2020
Why Science Communication?
24.05.2019
Stoichiometric controls of C and N cycling
07.05.2019
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
16.04.2019
Picky carnivorous plants?
RSS Blog als RSS Feed
Wetter Versuchsflächen
Luftdruck (356m): 968.9 hPa
Lufttemperatur: 28.6 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 7.3 km/h
Wind (Max.): 17.6 km/h
Windrichtung: SO

...mehr
Globalstrahlung: 619 W/m²
Lufttemperatur: 25.8 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: 3 h/d
Wind (Höhe 32m): 0.0 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen