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Seeds of non-native species in King George Island soil

Published online by Cambridge University Press:  23 February 2017

Eduardo Fuentes-Lillo ,
Marely Cuba-Díaz ,
José M. Troncoso-Castro  and
Mauricio Rondanelli-Reyes
Eduardo Fuentes-Lillo
Affiliation:
Laboratorio de Biotecnología y Estudios Ambientales, Escuela de Ciencias y Tecnología, Universidad de Concepción, Campus Los Ángeles. Casilla 341, Juan Antonio Coloma 0201, Los Ángeles, Chile Laboratorio de Palinología y Ecología Vegetal, Escuela de Ciencias y Tecnología, Universidad de Concepción, Campus Los Ángeles. Casilla 341, Juan Antonio Coloma 0201, Los Ángeles, Chile
Marely Cuba-Díaz*
Affiliation:
Laboratorio de Biotecnología y Estudios Ambientales, Escuela de Ciencias y Tecnología, Universidad de Concepción, Campus Los Ángeles. Casilla 341, Juan Antonio Coloma 0201, Los Ángeles, Chile
José M. Troncoso-Castro
Affiliation:
Laboratorio de Palinología y Ecología Vegetal, Escuela de Ciencias y Tecnología, Universidad de Concepción, Campus Los Ángeles. Casilla 341, Juan Antonio Coloma 0201, Los Ángeles, Chile
Mauricio Rondanelli-Reyes
Affiliation:
Laboratorio de Palinología y Ecología Vegetal, Escuela de Ciencias y Tecnología, Universidad de Concepción, Campus Los Ángeles. Casilla 341, Juan Antonio Coloma 0201, Los Ángeles, Chile
*
*corresponding author: [email protected]
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Abstract

The Antarctic terrestrial ecosystem is relatively simple and has low plant diversity. Taking into account the current effects of climate change and the exponential increase in visitors during the past 50 years, this ecosystem is very vulnerable to the arrival of non-native species. Fildes Peninsula, King George Island, is an area of high human impact due to the scientific and logistical activities that occur there making the area particularly interesting for the arrival of non-native species. In this study, we determine the spectrum of seeds arriving to the peninsula and being deposited in the topsoil. Soil samples were collected and analysed in order to identify and quantify plant material. The results indicate that there is a direct relationship between the sites where seeds were found and areas with higher levels of human activity on the peninsula. Eight species were identified, with the most common being Hypochaeris radicata and Senecio jacobaea. Seed quantification indicated that areas of high human activity are most vulnerable to the invasion and establishment of non-native species. This study is the first to demonstrate the presence of non-native seeds in the topsoil at Fildes Peninsula, Antarctica.

Keywords

anthropizationHypochaeris radicatainvasionplant soil particlesSenecio jacobaea
Type
Biological Sciences
Information
Antarctic Science , Volume 29 , Issue 4 , August 2017 , pp. 324 - 330
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Copyright
© Antarctic Science Ltd 2017 

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