Invasive Species as Rivals: Invasive Potential and Distribution Pattern of Xanthium strumarium L

Rafi Ullah, Nasrullah Khan, Nina Hewitt, Kishwar Ali, David Aaron Jones and Muhammad Ezaz Hasan Khan
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Rafi Ullah: Department of Botany, University of Malakand, Dir Lower, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan
Nasrullah Khan: Department of Botany, University of Malakand, Dir Lower, Chakdara 18800, Khyber Pakhtunkhwa, Pakistan
Nina Hewitt: Department of Geography, Vancouver Campus, University of British Columbia, 240A-1984 West Mall, Vancouver, BC V6T 1Z2, Canada
Kishwar Ali: College of General Education, University of Doha for Science and Technology, Arab League Street, Doha 24449, Qatar
David Aaron Jones: College of Health Sciences, University of Doha for Science and Technology, Arab League Street, Doha 24449, Qatar
Muhammad Ezaz Hasan Khan: College of General Education, University of Doha for Science and Technology, Arab League Street, Doha 24449, Qatar

Sustainability, 2022, vol. 14, issue 12, 1-20

Abstract: Xanthium strumarium L. is a globally successful invasive herb that has had significant negative ecological, economic and social impacts in many world regions. The present study was therefore conducted to evaluate the invasive potential and spatial distribution patterns of X . strumarium in heavily invaded plant communities of the semiarid regions of northern Pakistan. Investigations were based on data from 20 plants grown in the Herbarium at the University of Malakand, and from observations in 450 plots distributed across 45 stands representing habitats across Northern Province including open fields, hillocks and abandoned areas in both urban and rural areas. Multivariate analysis identified elevation, organic matter and organic carbon as the environmental variables most associated with communities invaded by X. strumarium . Increased soil silt was positively associated and available water was negatively associated with X . strumarium –invaded communities. These key environmental characteristics allowed us to identify four main associations: Group I: X . strumarium - C . sativa , Group II: X . strumarium - P . hysterophorus , Group III: X . strumarium - A. aspera and Group IV: X . strumarium - C . sativa . Other invasive species were observed, either exotic, such as P. hysterophorus , or indigenous, such as C. sativa and D. inoxia , often co-occurring and responding similarly to these factors. The results suggest that high temperature with drought stress could be a determinant of increasing population at lower elevations, whereas colder climates with adequate moisture are related to reduced populations at higher elevations, near the species’ upper range limits. It is recommend that the inclusion of appropriate, additional soil and climatic variables in species distribution models be implemented in order to better explain species’ ecological niches and help guide conservation and protection plans for native plant communities.

Keywords: X. strumarium; community structure; co-occurrence; invasive species; plant invasions (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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