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Density and age of invasive "Robinia pseudoacacia" modulate its impact on floodplain forests

Titelangaben

Staska, Bernadette ; Essl, Franz ; Samimi, Cyrus:
Density and age of invasive "Robinia pseudoacacia" modulate its impact on floodplain forests.
In: Basic and Applied Ecology. Bd. 15 (September 2014) Heft 6 . - S. 551-558.
ISSN 1439-1791
DOI: 10.1016/j.baae.2014.07.010

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Link zum Volltext (externe URL): Volltext

Abstract

The invasion of black locust (Robinia pseudoacacia L.) into nutrient-poor and dry habitats strongly alters resident species composition, species diversity and nutrient availability. However, less is known if its occurrence in more nutrient-rich habitats and dense forests causes similar effects, and if so, how the gradient of stand density and tree age affect soil properties and vegetation composition.We chose riparian forests of the Donau-Auen National Park in Eastern Austria and selected 28 plots which differed in R. pseudoacacia stand density and tree age. Vegetation composition, physical and chemical soil parameters were analyzed. Data analysis was performed using descriptive and bivariate statistics.We found that the content of soil nitrogen, NO3 and carbon increased with black locust density and stand age, respectively, while total C/N ratio appeared to be less affected. While plant diversity (Simpson index) did not show a significant variation neither among Robinia age classes nor along density gradients, some nitrophilous species gained abundance with increased density and some other species with increased age of R. pseudoacacia stands. Only one species (Anemone ranunculoides) became less abundant with Robinia stem density. We argue that these changes in species abundance are primarily due to altered mineral nitrogen availability, but increased radiation intensity under the open canopy of R. pseudoacacia and allelopathic qualities of the tree might also play a role. However, we found evidence that these effects imply certain thresholds and are not linearly scaled.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Europe; Austria; National Park; Invasive species; Robinia pseudoacacia; Soil; Ecological monitoring
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Professur Klimatologie > Professur Klimatologie - Univ.-Prof. Dr. Cyrus Samimi
Profilfelder > Advanced Fields > Ökologie und Umweltwissenschaften
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Professur Klimatologie
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
Eingestellt am: 02 Dec 2014 13:19
Letzte Änderung: 02 Dec 2014 13:19
URI: https://eref.uni-bayreuth.de/id/eprint/4414