scholarly journals Rhododendron and Japanese Knotweed: invasive species as innovative crops for second generation biofuels for the ionoSolv process

RSC Advances ◽  
2021 ◽  
Vol 11 (30) ◽  
pp. 18395-18403
Author(s):  
Louis M. Hennequin ◽  
Karen Polizzi ◽  
Paul S. Fennell ◽  
Jason P. Hallett
Keyword(s):  
Invasive Species ◽  
Ionic Liquid ◽  
Economic Burden ◽  
Second Generation ◽  
Japanese Knotweed ◽  
Fallopia Japonica ◽  
Second Generation Biofuels ◽  
Rhododendron Ponticum ◽  
Environmental Threat ◽  
The Uk

Japanese Knotweed (Fallopia japonica) and Rhododendron (Rhododendron ponticum), two invasive species in the UK that are an environmental threat and economic burden, can be integrated into a flexible ionic liquid based biorefinery process to produce bioenergy and chemicals.

scholarly journals Japanese knotweed (Fallopia japonica): An analysis of capacity to cause structural damage (compared to other plants) and typical rhizome extension

2018 ◽  
Author(s):  
Mark Fennell ◽  
Max Wade ◽  
Karen L Bacon
Keyword(s):  
Structural Damage ◽  
Structural Integrity ◽  
Negative Impact ◽  
Significant Risk ◽  
Japanese Knotweed ◽  
Socioeconomic Impacts ◽  
Fallopia Japonica ◽  
The United Kingdom ◽  
Invasive Species Control ◽  
The Uk

Fallopia japonica (Japanese knotweed) is a well-known invasive alien species in the United Kingdom and elsewhere in Europe and North America. The plant is known to have a negative impact on local biodiversity, flood risk, and ecosystem services; but in the UK it is also considered to pose a significant risk to the structural integrity of buildings that are within 7 m of the above ground portions of the plant. This has led to the presence of the plant regularly being used to refuse mortgage applications. Despite the significant socioeconomic impacts of such automatic mortgage option restriction, little research has been conducted to investigate this issue. The ‘7 m rule’ is derived from widely adopted government guidance in the UK. This study considered if there is evidence to support this phenomenon in the literature, reports the findings of a survey of invasive species control contractors and property surveyors to determine if field observations support these assertions, and reports a case study of 68 properties, located on three streets in northern England where F. japonicawas recorded. Additionally, given the importance of proximity, the 7 m rule is also tested based on data collected during the excavation based removal of F. japonicafrom 81 sites. No support was found to suggest that F. japonicacauses significant damage to built structures, even when it is growing in close proximity to them and certainly no more damage than other plant species that are not subject to such stringent lending policies. It was found that the 7 m rule is not a statistically robust tool for estimating likely rhizome extension. F. japonica rhizome rarely extends more than 4 m from above ground plants and is typically found within 2 m for small stands and 2.5 m for large stands. Based on these findings, the practice of automatically restricting mortgage options for home buyers when F. japonicais present, is not commensurate with the risk.

scholarly journals Japanese knotweed (Fallopia japonica): An analysis of capacity to cause structural damage (compared to other plants) and typical rhizome extension

2018 ◽  
Author(s):  
Mark Fennell ◽  
Max Wade ◽  
Karen L Bacon
Keyword(s):  
Structural Damage ◽  
Structural Integrity ◽  
Negative Impact ◽  
Significant Risk ◽  
Japanese Knotweed ◽  
Socioeconomic Impacts ◽  
Fallopia Japonica ◽  
The United Kingdom ◽  
Invasive Species Control ◽  
The Uk

Fallopia japonica (Japanese knotweed) is a well-known invasive alien species in the United Kingdom and elsewhere in Europe and North America. The plant is known to have a negative impact on local biodiversity, flood risk, and ecosystem services; but in the UK it is also considered to pose a significant risk to the structural integrity of buildings that are within 7 m of the above ground portions of the plant. This has led to the presence of the plant regularly being used to refuse mortgage applications. Despite the significant socioeconomic impacts of such automatic mortgage option restriction, little research has been conducted to investigate this issue. The ‘7 m rule’ is derived from widely adopted government guidance in the UK. This study considered if there is evidence to support this phenomenon in the literature, reports the findings of a survey of invasive species control contractors and property surveyors to determine if field observations support these assertions, and reports a case study of 68 properties, located on three streets in northern England where F. japonicawas recorded. Additionally, given the importance of proximity, the 7 m rule is also tested based on data collected during the excavation based removal of F. japonicafrom 81 sites. No support was found to suggest that F. japonicacauses significant damage to built structures, even when it is growing in close proximity to them and certainly no more damage than other plant species that are not subject to such stringent lending policies. It was found that the 7 m rule is not a statistically robust tool for estimating likely rhizome extension. F. japonica rhizome rarely extends more than 4 m from above ground plants and is typically found within 2 m for small stands and 2.5 m for large stands. Based on these findings, the practice of automatically restricting mortgage options for home buyers when F. japonicais present, is not commensurate with the risk.

Fallopia japonica (Japanese knotweed).

2021 ◽  
Author(s):  
Dick Shaw
Keyword(s):  
Invasive Species ◽  
Recipient Country ◽  
Soil Types ◽  
Invasive Weeds ◽  
Japanese Knotweed ◽  
Invasive Weed ◽  
Fallopia Japonica ◽  
Introduced Range ◽  
Hard Structures ◽  
Potential Contaminant

Abstract F. japonica is an extremely invasive weed despite its lack of extensive sexual reproduction in most of its introduced range. It is included on various lists of invasive weeds and is one of the 100 worst invasive species as identified by the IUCN. It is a potential contaminant of soil, and its ability to tolerate a remarkable range of soil types and climates means that it has the potential to spread much further than it has to date. It has gained a fearsome reputation for breaking through hard structures in the built environment and being almost impossible to eradicate once it has taken hold and is often recognized as one of the most pernicious weeds in any recipient country.

scholarly journals Fallopia japonica (Japanese knotweed).

2020 ◽  
Author(s):  
Dick Shaw
Keyword(s):  
Invasive Species ◽  
Recipient Country ◽  
Soil Types ◽  
Invasive Weeds ◽  
Japanese Knotweed ◽  
Invasive Weed ◽  
Fallopia Japonica ◽  
Introduced Range ◽  
Hard Structures ◽  
Potential Contaminant

Abstract F. japonica is an extremely invasive weed despite its lack of extensive sexual reproduction in most of its introduced range. It is included on various lists of invasive weeds and is one of the 100 worst invasive species as identified by the IUCN. It is a potential contaminant of soil, and its ability to tolerate a remarkable range of soil types and climates means that it has the potential to spread much further than it has to date. It has gained a fearsome reputation for breaking through hard structures in the built environment and being almost impossible to eradicate once it has taken hold and is often recognized as one of the most pernicious weeds in any recipient country.

scholarly journals Japanese knotweed (Fallopia japonica): an analysis of capacity to cause structural damage (compared to other plants) and typical rhizome extension

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5246 ◽  
Author(s):  
Mark Fennell ◽  
Max Wade ◽  
Karen L. Bacon
Keyword(s):  
Structural Damage ◽  
Structural Integrity ◽  
Negative Impact ◽  
Significant Risk ◽  
Japanese Knotweed ◽  
Socioeconomic Impacts ◽  
Fallopia Japonica ◽  
Invasive Species Control ◽  
Residential Properties ◽  
The Uk

Fallopia japonica (Japanese knotweed) is a well-known invasive alien species in the UK and elsewhere in Europe and North America. The plant is known to have a negative impact on local biodiversity, flood risk and ecosystem services; but in the UK it is also considered to pose a significant risk to the structural integrity of buildings that are within seven m of the above ground portions of the plant. This has led to the presence of the plant on residential properties regularly being used to refuse mortgage applications. Despite the significant socioeconomic impacts of such automatic mortgage option restriction, little research has been conducted to investigate this issue. The ‘seven-m rule’ is derived from widely adopted government guidance in the UK. This study considered if there is evidence to support this phenomenon in the literature, reports the findings of a survey of invasive species control contractors and property surveyors to determine if field observations support these assertions, and reports a case study of 68 properties, located on three streets in northern England where F. japonica was recorded. Additionally, given the importance of proximity, the seven-m rule is also tested based on data collected during the excavation based removal of F. japonica from 81 sites. No support was found to suggest that F. japonica causes significant damage to built structures, even when it is growing in close proximity to them and certainly no more damage than other plant species that are not subject to such stringent lending policies. It was found that the seven-m rule is not a statistically robust tool for estimating likely rhizome extension. F. japonica rhizome rarely extends more than four m from above ground plants and is typically found within two m for small stands and 2.5 m for large stands. Based on these findings, the practice of automatically restricting mortgage options for home buyers when F. japonica is present, is not commensurate with the risk.

scholarly journals Invasive Species Removal Promotes Habitat Restoration but Does Not Immediately Improve the Condition of a Threatened Plant Subspecies

2019 ◽  
Vol 10 (1) ◽  
pp. 111-125
Author(s):  
Kali Z. Mattingly ◽  
John J. Wiley ◽  
Donald J. Leopold
Keyword(s):  
Invasive Species ◽  
Habitat Restoration ◽  
Interspecific Interactions ◽  
Block Design ◽  
Light Condition ◽  
Japanese Knotweed ◽  
Fallopia Japonica ◽  
High Light Condition ◽  
Species Removal ◽  
Growth And Reproduction

Abstract Impacts of invasive species on rare species are relevant to conservation. We studied the response of Leedy's roseroot Rhodiola integrifolia subsp. leedyi, a subspecies listed as threatened under the Endangered Species Act, to removal of the invasive species Japanese knotweed Fallopia japonica. Japanese knotweed has invaded the largest known population of Leedy's roseroot, affecting about 10% of all Leedy's roseroot in the world. Japanese knotweed shaded Leedy's roseroot, but the two did not share belowground resources because of their position on cliffs. To study this interaction and, ultimately, to restore Leedy's roseroot habitat to an open, high-light condition, we removed Japanese knotweed in a three-treatment block design. We measured Leedy's roseroot abundance, growth, and reproduction in treatment blocks and in uninvaded areas before and after treatment. Compared with uninvaded areas, Japanese knotweed invasion negatively affected Leedy's roseroot abundance, growth, and reproduction. Light interception by Japanese knotweed degraded the habitat for Leedy's roseroot. Herbicide removal of Japanese knotweed resulted in increased light and temperature compared with untreated invaded plots but did not affect Leedy's roseroot abundance, growth, or reproduction over the 2 y of our study. These results show that invasive species removal is conducive to restoring Leedy's roseroot habitat, but recovery in the subspecies may lag behind restoration of the habitat, suggesting that additional action or time may be required to restore preinvasion performance of Leedy's roseroot. Results of this study may inform restoration efforts for other systems and contribute to the literature on interspecific interactions.

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