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Spatial Patterns of Frangula alnus (Rosales: Rhamnaceae): Implications for Invasive Plant Management
Jennifer Greenleaf1, Roghaiyeh Karimzadeh1,2, Yong-Lak Park1
1Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
Biology
|November 24, 2023
Summary
Glossy buckthorn (Frangula alnus) invades North American forests, spreading from roadsides. Managing this invasive shrub is most effective near forest roads, where its density is highest.
Area of Science:
- Ecology
- Invasive Species Management
- Forestry
Background:
- Glossy buckthorn (Frangula alnus) is a European invasive shrub in North America.
- It threatens native vegetation in open and disturbed forest habitats.
- Current management is limited to roadsides, leaving interior forest populations unaddressed.
Purpose of the Study:
- To investigate the spatial patterns of Frangula alnus.
- To determine the relationship between Frangula alnus distribution and forest roads.
Main Methods:
- Field data collected at 1412 sample points across four sites in Allegheny National Forest, Pennsylvania.
- Buffer analyses conducted along forest roads to assess proximity effects.
- Geostatistics and Spatial Analysis by Distance Indices (SADIE) used for spatial pattern characterization.
Main Results:
- Frangula alnus exhibits spatial aggregation.
- The invasive shrub was found beyond forest roads.
- Both presence and density of Frangula alnus decreased with increasing distance from forest roads.
Conclusions:
- Forest roads are significant in the spatial distribution of Frangula alnus.
- Precision management strategies targeting areas near roads are recommended.
- Effective control can be achieved by focusing on high-density zones identified through spatial analysis.
Keywords:
Frangula alnusSADIEdistributiongeostatisticsglossy buckthorninvasive speciesspatial patternMore Related Videos
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