Tytuł artykułu

Morphology of the Invasive Amphiphyte Alternanthera Philoxeroides Under Different Water Levels and Nitrogen Concentrations

Tytuł czasopisma

Acta Biologica Cracoviensia s. Botanica




No 2

Autorzy publikacji

Wydział PAN

Nauki Biologiczne i Rolnicze


<jats:title>Abstract</jats:title> <jats:p>Water level fluctuation and inorganic nitrogen enrichment are two serious problems caused by anthropogenic disturbances in aquatic ecosystems. They cause resource fluctuation and thus might influence the invasive-ness of alien plants. <jats:italic>Alternanthera philoxeroides</jats:italic> is an amphibious and widespread clonal plant which exhibits significant invasiveness. This experimental study examined the plant's morphological traits under different nitrogen concentrations and water levels. The responses of <jats:italic>A. philoxeroides</jats:italic> to water levels and nitrogen concentrations were similar for both land-like and riverbank-like initial conditions. <jats:italic>A. philoxeroides</jats:italic> showed an escape strategy of shoot elongation when its growth was suppressed by shallow submergence. No toxic symptoms but increased clonal spread was observed at high nitrogen concentrations, suggesting that <jats:italic>A. philoxeroides</jats:italic> not only tolerated but benefitted from nitrogen-polluted water. High nitrogen level mitigated the negative effects of submergence on its leaf survival, thereby enhancing its adaptation to water level fluctuation. Such strong adaptability and clonal spread helps <jats:italic>A. philoxeroides</jats:italic> to grow and invade successfully in shallow eutrophic water.</jats:p>


Biological Commission of the Polish Academy of Sciences – Cracow Branch


2015[2015.01.01 AD - 2015.12.31 AD]


ISSN 0001-5296 ; eISSN 1898-0295