Pub Date : 2023-07-19DOI: 10.1080/03071375.2023.2233868
P. K. Pati, P. Kaushik, Devanand Maurya, Chayan Adhikari, A. J. Bishwas, M. L. Khan, P. K. Khare
{"title":"Evaluating the role of roadside vegetation in atmospheric carbon dioxide mitigation: a case study","authors":"P. K. Pati, P. Kaushik, Devanand Maurya, Chayan Adhikari, A. J. Bishwas, M. L. Khan, P. K. Khare","doi":"10.1080/03071375.2023.2233868","DOIUrl":"https://doi.org/10.1080/03071375.2023.2233868","url":null,"abstract":"","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84020214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-19DOI: 10.1080/03071375.2023.2233864
K. Sales, Hannah Walker, K. Sparrow, P. Handley, Madalena Vaz Monteiro, Kathryn L. Hand, Annabel Buckland, Alexander Chambers-Ostler, K. Doick
ABSTRACT Urban trees and other green infrastructure are advocated as a cost-effective sustainable solution to ameliorate the socio-economic and environmental challenges of urbanisation. UK research has only recently started to quantify urban trees. Tree canopy cover percentage (TCC) is a useful indicator of tree presence. Its estimation can be reproducible, simple, fast, and cost-effective; it can also be evaluated through citizen science, improving people’s appreciation for urban trees and widening the data collection resource pool. This research summarises a citizen science assessment of the TCC of the UK’s 5,749 urban wards. Descriptive statistics are presented spanning local authority to country. The area-weighted mean (and standard error) of TCC across urban wards was 17.3 ± 0.1%. Nationally, the TCC were 11.8 ± 0.5%, 15.7 ± 0.5%, 17.5 ± 0.2%, and 18.1 ± 0.5%, for Northern Ireland, Scotland, England, and Wales, respectively. Results show that only 27.6% of urban wards had a TCC higher than 20%, previously suggested as a minimum target for UK towns. The findings highlight substantial geographical variance in TCC equity, as well as a negative correlation between TCC and deprivation. This information will be of value in urban forest strategy and management.
{"title":"The canopy cover Webmap of the United Kingdom’s towns and cities","authors":"K. Sales, Hannah Walker, K. Sparrow, P. Handley, Madalena Vaz Monteiro, Kathryn L. Hand, Annabel Buckland, Alexander Chambers-Ostler, K. Doick","doi":"10.1080/03071375.2023.2233864","DOIUrl":"https://doi.org/10.1080/03071375.2023.2233864","url":null,"abstract":"ABSTRACT Urban trees and other green infrastructure are advocated as a cost-effective sustainable solution to ameliorate the socio-economic and environmental challenges of urbanisation. UK research has only recently started to quantify urban trees. Tree canopy cover percentage (TCC) is a useful indicator of tree presence. Its estimation can be reproducible, simple, fast, and cost-effective; it can also be evaluated through citizen science, improving people’s appreciation for urban trees and widening the data collection resource pool. This research summarises a citizen science assessment of the TCC of the UK’s 5,749 urban wards. Descriptive statistics are presented spanning local authority to country. The area-weighted mean (and standard error) of TCC across urban wards was 17.3 ± 0.1%. Nationally, the TCC were 11.8 ± 0.5%, 15.7 ± 0.5%, 17.5 ± 0.2%, and 18.1 ± 0.5%, for Northern Ireland, Scotland, England, and Wales, respectively. Results show that only 27.6% of urban wards had a TCC higher than 20%, previously suggested as a minimum target for UK towns. The findings highlight substantial geographical variance in TCC equity, as well as a negative correlation between TCC and deprivation. This information will be of value in urban forest strategy and management.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"116 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84920945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-18DOI: 10.1080/03071375.2023.2233871
Bola Fajemirokun
{"title":"Analysis of key issues and prospects for implementing urban forestry in Lagos State, Nigeria","authors":"Bola Fajemirokun","doi":"10.1080/03071375.2023.2233871","DOIUrl":"https://doi.org/10.1080/03071375.2023.2233871","url":null,"abstract":"","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90391024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-03DOI: 10.1080/03071375.2023.2235941
I. Rotherham
Long-standing climate changes are triggering more extreme weather events which are greater in intensity but also more frequent in occurrence. Whilst trees, particularly in urban and peri-urban areas, help moderate extreme weather and may even contribute to at least a slowing of some adverse changes, they are in turn threatened by storms, droughts, and floods. Responding to these pressures necessitates new approaches, and techniques to both reduce and sometimes to repair damage, and this is where arboricultural science and good practice come to the fore. Additionally, in order to improve best practice and to provide dissemination of novel ideas, and importantly to test them, communication is the key. Furthermore, this is increasingly necessary on a global scale, and hopefully, the Arboricultural Journal plays a vital role in this. However, the development of effective strategies to address the coming challenges for urban trees and especially for established trees which increasingly become urbanised and stressed, involves a host of variable stakeholders including NGOs. Moreover, with cash-strapped local authorities, the work of non-governmental organisations (NGOs) and of forest volunteers and tree wardens becomes more vital. These are all matters considered by the selection of papers for this issue of the Arboricultural Journal. Elton et al. (2023) have taken the eastern United States as a case-study region to examine urban forestry non-governmental organisations. They showed the importance of NGOs, of volunteers, and of strategic partnerships in delivering urban forestry, and especially in matters of awareness and communication to a wider public. Activities where this was the case included major tree-planting projects and in celebratory and educational events. In a paper that is relevant to this discussion, Danquah (2023), considered the perceptions of trees in urban areas held by landlords and owners of businesses. Concerns included root-damage to buildings and slippery surfaces caused by both fallen leaves and dropped fruit. Positive aspects of urban trees were felt to be the provision of edible fruits and nuts, improved health conditions, shade, and oxygen production by trees. Furthermore, in urban areas, protection from wind was important. It is useful to gain insight into attitudes and perceptions held by key stakeholders if effective, long-term strategies are to be implemented. As noted earlier, with changing climate, we are witnessing more extreme weather events, and these bring damage and risk. Potentially, in an urban area, the impacts of storm damage or other related impacts may decrease local resilience to long-term changes. Addressing responses to storm-damaged trees is discussed for the case-study area of New Jersey State (USA) by Greene and Greene (2023). They examined the damage to trees in storm-prone areas and considered possible actions to recover, remediate, or repair stormdamaged specimens. The approach and the ideas presented
长期的气候变化正在引发更多的极端天气事件，这些事件的强度更大，但发生的频率也更频繁。虽然树木，特别是城市和城郊地区的树木，有助于缓和极端天气，甚至可能至少有助于减缓一些不利的变化，但它们反过来又受到风暴、干旱和洪水的威胁。应对这些压力需要新的方法和技术来减少和有时修复损害，这就是树木科学和良好实践脱颖而出的地方。此外，为了改进最佳实践，传播新颖的想法，重要的是测试它们，沟通是关键。此外，这在全球范围内越来越有必要，希望《树木学杂志》在这方面发挥至关重要的作用。然而，制定有效的战略来应对城市树木面临的挑战，特别是对日益城市化和压力的现有树木，涉及包括非政府组织在内的许多不同的利益相关者。此外，由于地方政府资金紧张，非政府组织(ngo)、森林志愿者和树木管理员的工作变得更加重要。这些都是本期《树木学杂志》的论文选择所考虑的问题。Elton et al.(2023)以美国东部为个案研究区域考察城市林业非政府组织。它们显示了非政府组织、志愿者和战略伙伴关系在提供城市林业方面的重要性，特别是在向更广泛的公众宣传和沟通方面的重要性。这方面的活动包括大型植树项目以及庆祝和教育活动。在一篇与本讨论相关的论文中，Danquah(2023)考虑了房东和企业所有者对城市地区树木的看法。人们担心的是，落叶和掉落的果实会对建筑物的根部造成损害，并导致地面湿滑。城市树木的积极方面被认为是提供可食用的水果和坚果，改善健康条件，树荫和树木的氧气生产。此外，在城市地区，防风是很重要的。如果要实施有效的长期战略，了解关键利益攸关方持有的态度和看法是有用的。如前所述，随着气候变化，我们正在目睹更多的极端天气事件，这些事件带来了破坏和风险。在城市地区，风暴破坏或其他相关影响的影响可能会降低当地对长期变化的适应能力。Greene和Greene(2023)针对美国新泽西州的案例研究区域讨论了应对风暴破坏树木的方法。他们检查了风暴易发地区的树木受损情况，并考虑采取可能的措施来恢复、修复或修复被风暴破坏的树木。提出的方法和想法进一步提出了关于我们对灾难性事件和损害的反应的问题，也许是短期的，下意识的树木学杂志2023,VOL. 45, NO。3,177 - 178 https://doi.org/10.1080/03071375.2023.2235941
{"title":"Editorial: climate, extreme weather, and the need for community engagement with urban tree futures","authors":"I. Rotherham","doi":"10.1080/03071375.2023.2235941","DOIUrl":"https://doi.org/10.1080/03071375.2023.2235941","url":null,"abstract":"Long-standing climate changes are triggering more extreme weather events which are greater in intensity but also more frequent in occurrence. Whilst trees, particularly in urban and peri-urban areas, help moderate extreme weather and may even contribute to at least a slowing of some adverse changes, they are in turn threatened by storms, droughts, and floods. Responding to these pressures necessitates new approaches, and techniques to both reduce and sometimes to repair damage, and this is where arboricultural science and good practice come to the fore. Additionally, in order to improve best practice and to provide dissemination of novel ideas, and importantly to test them, communication is the key. Furthermore, this is increasingly necessary on a global scale, and hopefully, the Arboricultural Journal plays a vital role in this. However, the development of effective strategies to address the coming challenges for urban trees and especially for established trees which increasingly become urbanised and stressed, involves a host of variable stakeholders including NGOs. Moreover, with cash-strapped local authorities, the work of non-governmental organisations (NGOs) and of forest volunteers and tree wardens becomes more vital. These are all matters considered by the selection of papers for this issue of the Arboricultural Journal. Elton et al. (2023) have taken the eastern United States as a case-study region to examine urban forestry non-governmental organisations. They showed the importance of NGOs, of volunteers, and of strategic partnerships in delivering urban forestry, and especially in matters of awareness and communication to a wider public. Activities where this was the case included major tree-planting projects and in celebratory and educational events. In a paper that is relevant to this discussion, Danquah (2023), considered the perceptions of trees in urban areas held by landlords and owners of businesses. Concerns included root-damage to buildings and slippery surfaces caused by both fallen leaves and dropped fruit. Positive aspects of urban trees were felt to be the provision of edible fruits and nuts, improved health conditions, shade, and oxygen production by trees. Furthermore, in urban areas, protection from wind was important. It is useful to gain insight into attitudes and perceptions held by key stakeholders if effective, long-term strategies are to be implemented. As noted earlier, with changing climate, we are witnessing more extreme weather events, and these bring damage and risk. Potentially, in an urban area, the impacts of storm damage or other related impacts may decrease local resilience to long-term changes. Addressing responses to storm-damaged trees is discussed for the case-study area of New Jersey State (USA) by Greene and Greene (2023). They examined the damage to trees in storm-prone areas and considered possible actions to recover, remediate, or repair stormdamaged specimens. The approach and the ideas presented","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"224 1","pages":"177 - 178"},"PeriodicalIF":0.0,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88377192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/03071375.2022.2072622
G. Moreno, E. Martinez Carretero, J. Vazquez, B. Vento, M. Ontivero, Andrea Duplancic, Jorge Alcalá
ABSTRACT Human activities in cities, especially those burning fossil fuels, have increased atmospheric carbon dioxide (CO2) concentrations. Urban trees play a crucial role in the biogeochemical cycle of carbon storage in cities. Many tons of carbon are annually stored by the structural components of trees in urban ecosystems. In the urban forest of San Juan city, Platanus hispanica is one of the most abundant species. The goal of this study is to estimate the amount of carbon stored by this species in its different structural components: trunks, primary, secondary and minor branches. We analysed samples collected from two areas in the city: the urban and suburban areas. We estimated dry matter for each structural component. Significant differences were found between the studied areas. Results indicated that P. hispanica accumulated 5,630 tons of carbon in the urban area and 4,700 tons of carbon in the suburban area. Around 20,662 tons and 17,249 tons of CO2, in the urban and suburban areas respectively, are annually sequestered by this species from the atmosphere of San Juan city.
{"title":"Quantifying the role of Platanus hispanica in carbon storage in an urban forest in central west Argentina","authors":"G. Moreno, E. Martinez Carretero, J. Vazquez, B. Vento, M. Ontivero, Andrea Duplancic, Jorge Alcalá","doi":"10.1080/03071375.2022.2072622","DOIUrl":"https://doi.org/10.1080/03071375.2022.2072622","url":null,"abstract":"ABSTRACT Human activities in cities, especially those burning fossil fuels, have increased atmospheric carbon dioxide (CO2) concentrations. Urban trees play a crucial role in the biogeochemical cycle of carbon storage in cities. Many tons of carbon are annually stored by the structural components of trees in urban ecosystems. In the urban forest of San Juan city, Platanus hispanica is one of the most abundant species. The goal of this study is to estimate the amount of carbon stored by this species in its different structural components: trunks, primary, secondary and minor branches. We analysed samples collected from two areas in the city: the urban and suburban areas. We estimated dry matter for each structural component. Significant differences were found between the studied areas. Results indicated that P. hispanica accumulated 5,630 tons of carbon in the urban area and 4,700 tons of carbon in the suburban area. Around 20,662 tons and 17,249 tons of CO2, in the urban and suburban areas respectively, are annually sequestered by this species from the atmosphere of San Juan city.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"31 1","pages":"118 - 131"},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88285473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-08DOI: 10.1080/03071375.2022.2151194
P. Greene, Virginia A. Greene
ABSTRACT During a moderate to severe hurricane more than 5% of trees snap or uproot, depending on the strength and duration of the storm, causing considerable damage to nearby property, housing, and power lines. This study aims to specify the mechanics of trunk damage and possible repair mechanisms. Field data are assembled from trees after hurricane damage to the trunk. Allometric scaling parameters based on trunk diameter (D ^ exp) are determined for the damaged trees’ height, weight, Safety Factor S.F. and critical wind velocity Vcrit. 55% snap via stress fracture of the trunk, 45% by uprooting of the entire tree. Hurricane boundary layer profiles, shear layer forces, Safety Factor (SF), and critical wind velocity Vcrit are determined. Power law exponents (D ^ exp) predict tree height (0.84), weight (2.68), Safety Factor S.F. (0.74), and critical wind velocity Vcrit (0.33) in terms of trunk diameter, with correlation coefficients r = 0.94 to 0.99. Critical velocity Vcrit (wind velocity above which the tree will fail) is found to scale as the Safety Factor S.F.^ (1/2). In conclusion, strategic use of clamps, bolts, tree sap and cables allows restoration of uprooted or snapped trunks for some hurricane damaged trees. Success rate for repair is 67%, average longevity after repair 5.6 years for medium-sized commercially valuable trees.
{"title":"Hurricane Tree Damage and Repair","authors":"P. Greene, Virginia A. Greene","doi":"10.1080/03071375.2022.2151194","DOIUrl":"https://doi.org/10.1080/03071375.2022.2151194","url":null,"abstract":"ABSTRACT During a moderate to severe hurricane more than 5% of trees snap or uproot, depending on the strength and duration of the storm, causing considerable damage to nearby property, housing, and power lines. This study aims to specify the mechanics of trunk damage and possible repair mechanisms. Field data are assembled from trees after hurricane damage to the trunk. Allometric scaling parameters based on trunk diameter (D ^ exp) are determined for the damaged trees’ height, weight, Safety Factor S.F. and critical wind velocity Vcrit. 55% snap via stress fracture of the trunk, 45% by uprooting of the entire tree. Hurricane boundary layer profiles, shear layer forces, Safety Factor (SF), and critical wind velocity Vcrit are determined. Power law exponents (D ^ exp) predict tree height (0.84), weight (2.68), Safety Factor S.F. (0.74), and critical wind velocity Vcrit (0.33) in terms of trunk diameter, with correlation coefficients r = 0.94 to 0.99. Critical velocity Vcrit (wind velocity above which the tree will fail) is found to scale as the Safety Factor S.F.^ (1/2). In conclusion, strategic use of clamps, bolts, tree sap and cables allows restoration of uprooted or snapped trunks for some hurricane damaged trees. Success rate for repair is 67%, average longevity after repair 5.6 years for medium-sized commercially valuable trees.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"58 11 1","pages":"194 - 211"},"PeriodicalIF":0.0,"publicationDate":"2023-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86859235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03071375.2023.2177429
I. Rotherham
Along with reviews and letters, this first issue of the new year brings four papers and covers a variety of arboricultural topics. With tree diseases very much to the fore at the present time, Copeland et al. (2023) consider the current situation with Dutch Elm Disease in North America. The American elm (Ulmus americana) is a hugely significant tree across wide areas of North America, but as with elms throughout Western Europe, its status has been badly compromised by disease. There are issues in terms of the spread of the infection, of the potential for disease-resistant trees, and of how urban tree managers might deal with the issues that the American elms pose in towns and cities across the continent. With climate change, widespread environmental stresses, and increasing globalisation, problems such as Dutch Elm Disease are certain to grow in the decades to come, and reviews of key issues are therefore especially welcome and timely. Along with diseases, tree-related hazards are another major issue in on-going debates in the arboricultural industry. In urban areas, the risks posed by tree failure are also connected to the amount of traffic on a particular highway, and therefore assessing this in ways that are low cost, effective, and reliable, becomes imperative. Klein et al. (2023) have researched the development of a potential low-cost traffic counter to address these issues. They note the importance of reliable traffic counts (vehicles and pedestrians) in evaluating collisionand failure-related risks, and that the use of automatic counters may be prohibited by cost. Their study presents comparative findings from homemade counters and commercial units, with significant errors from both. The errors for both commercially manufactured and homemade units appear to increase with ambient temperatures. Steel (2023) has evaluated the issues for weaknesses in multi-stemmed trees where weak unions or attachments may generate concerns about structural integrity and possible failure. This becomes particularly important when considering significant specimen trees where interventions to strengthen the structure might be considered but may have longer-term problems. This interesting study assesses the potential of triggering natural support through inducing wound wood growth rather than through physical mechanical interventions alone. The new growth was induced through insertion of a plastic beam into the tree tissue. Manipulating the tree’s natural growth responses may offer effective ways in which to reduce risk. An important question posed is when the time is right to wound a tree to promote growth to reduce failure. Again, connected to assessment of risk and tree failure the study reported by Tong and Slater (2023) researched the impacts on current investigations into tree hollowing and rot, of earlier measures taken to fill tree cavities (such as with foam) to strengthen Arboricultural Journal 2023, VOL. 45, NO. 1, 1–2 https://doi.org/10.1080/03071375.
{"title":"Tree diseases, hollowing and assessment remain current topics in arboriculture","authors":"I. Rotherham","doi":"10.1080/03071375.2023.2177429","DOIUrl":"https://doi.org/10.1080/03071375.2023.2177429","url":null,"abstract":"Along with reviews and letters, this first issue of the new year brings four papers and covers a variety of arboricultural topics. With tree diseases very much to the fore at the present time, Copeland et al. (2023) consider the current situation with Dutch Elm Disease in North America. The American elm (Ulmus americana) is a hugely significant tree across wide areas of North America, but as with elms throughout Western Europe, its status has been badly compromised by disease. There are issues in terms of the spread of the infection, of the potential for disease-resistant trees, and of how urban tree managers might deal with the issues that the American elms pose in towns and cities across the continent. With climate change, widespread environmental stresses, and increasing globalisation, problems such as Dutch Elm Disease are certain to grow in the decades to come, and reviews of key issues are therefore especially welcome and timely. Along with diseases, tree-related hazards are another major issue in on-going debates in the arboricultural industry. In urban areas, the risks posed by tree failure are also connected to the amount of traffic on a particular highway, and therefore assessing this in ways that are low cost, effective, and reliable, becomes imperative. Klein et al. (2023) have researched the development of a potential low-cost traffic counter to address these issues. They note the importance of reliable traffic counts (vehicles and pedestrians) in evaluating collisionand failure-related risks, and that the use of automatic counters may be prohibited by cost. Their study presents comparative findings from homemade counters and commercial units, with significant errors from both. The errors for both commercially manufactured and homemade units appear to increase with ambient temperatures. Steel (2023) has evaluated the issues for weaknesses in multi-stemmed trees where weak unions or attachments may generate concerns about structural integrity and possible failure. This becomes particularly important when considering significant specimen trees where interventions to strengthen the structure might be considered but may have longer-term problems. This interesting study assesses the potential of triggering natural support through inducing wound wood growth rather than through physical mechanical interventions alone. The new growth was induced through insertion of a plastic beam into the tree tissue. Manipulating the tree’s natural growth responses may offer effective ways in which to reduce risk. An important question posed is when the time is right to wound a tree to promote growth to reduce failure. Again, connected to assessment of risk and tree failure the study reported by Tong and Slater (2023) researched the impacts on current investigations into tree hollowing and rot, of earlier measures taken to fill tree cavities (such as with foam) to strengthen Arboricultural Journal 2023, VOL. 45, NO. 1, 1–2 https://doi.org/10.1080/03071375.","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"2006 1","pages":"1 - 2"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86913166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03071375.2023.2178147
I. Rotherham
In autumn 2022, we lost one of the great founders of modern British plant ecology, Professor Christopher Donald Pigott. Donald who was my professor at the University of Lancaster died at the age of 94 and was a member of a distinguished generation of Cambridge botanists that emerged after the Second World War. His roots were deeply embedded in British plant ecology and the history of its emergence and development. As described in a previous obituary in the Arboricultural Journal (Rotherham, 2015), Donald also had a significant influence on the early work of Oliver Rackham, perhaps the most influential landscape historian of his generation. He was described to me by a mutual acquaintance of having the most frighteningly powerful intellect of anyone he had met, and yet he was also both kind and generous when sharing his vast knowledge and insight. At Lancaster, I had the chance to work on the lime trees that were his passion, and then on his brainchild, the fledgling National Vegetation Classification Project. It was Donald’s enthusiasm for trees and their natural history which sparked my own interests to this day. Over the years, it certainly became apparent to me how broad and deep Donald’s own interests in botany and ecology were. He wrote profusely for the Journal of Ecology but also for the proceedings of bodies such as the Botanical Society of the British Isles. Furthermore, when we live in a time of increasing specialisation, his influence was across a broad front to encompass the autecology of individual plant species and the factors influencing their distribution and occurrence, to matters of vegetation census and analysis. Whilst at Sheffield
{"title":"Donald Pigott – a personal tribute","authors":"I. Rotherham","doi":"10.1080/03071375.2023.2178147","DOIUrl":"https://doi.org/10.1080/03071375.2023.2178147","url":null,"abstract":"In autumn 2022, we lost one of the great founders of modern British plant ecology, Professor Christopher Donald Pigott. Donald who was my professor at the University of Lancaster died at the age of 94 and was a member of a distinguished generation of Cambridge botanists that emerged after the Second World War. His roots were deeply embedded in British plant ecology and the history of its emergence and development. As described in a previous obituary in the Arboricultural Journal (Rotherham, 2015), Donald also had a significant influence on the early work of Oliver Rackham, perhaps the most influential landscape historian of his generation. He was described to me by a mutual acquaintance of having the most frighteningly powerful intellect of anyone he had met, and yet he was also both kind and generous when sharing his vast knowledge and insight. At Lancaster, I had the chance to work on the lime trees that were his passion, and then on his brainchild, the fledgling National Vegetation Classification Project. It was Donald’s enthusiasm for trees and their natural history which sparked my own interests to this day. Over the years, it certainly became apparent to me how broad and deep Donald’s own interests in botany and ecology were. He wrote profusely for the Journal of Ecology but also for the proceedings of bodies such as the Botanical Society of the British Isles. Furthermore, when we live in a time of increasing specialisation, his influence was across a broad front to encompass the autecology of individual plant species and the factors influencing their distribution and occurrence, to matters of vegetation census and analysis. Whilst at Sheffield","PeriodicalId":35799,"journal":{"name":"Arboricultural Journal","volume":"40 1","pages":"87 - 92"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77401783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：