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Ethnobotanical study of medicinal plants used by Lois community of Kakching district, Manipur, India
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-22 DOI: 10.1016/j.tfp.2024.100765
Salam Shyamchandra Singh , Laldinfeli Ralte , Hmingremhlua Sailo , Athokpam Pinokiyo , M. Roma Devi , Sandhyarani Devi Khomdram , Y. Tunginba Singh
The majority of Manipuri still rely on medicinal plants, which have been utilized for generations. The Lois people, who live in the Kakching district of Manipur, have a rich cultural heritage and have long used plants for various purposes, including the production of traditional herbal medicine. Despite the usage of indigenous medicinal plants in the Kakching district, ethnobotanical research has not yet been conducted. The present study aims to document and analyze traditional medicinal plants as well as their associated knowledge and practices among local communities. Quantitative ethnobotanical data was documented from October 2022 to December 2023 using semi-structured interviews, in-person discussions, group discussions, and guided field trips. There were 140 informants for this cross sectional study. Maximum informants were characterized by mostly male practitioners, age around 45–60 years, with high school and diploma level education, farmers and herbalists by occupation. All the collected data were analyzed using MS Excel Spreadsheet, Graph Pad Prism, and ethnobotany R package in R software. We identified 236 traditional medicinal plant species distributed in 80 families and 184 genera used for treating 59 distinct medical conditions under 13 recognized categories of ailments in the present study. With the biggest number of species given and the highest number of dominant families in the area, the Fabaceae and Lamiaceae (20 species) were identified. The most often employed plant parts were leaves and the primary method of preparing cures was decoction. Fidelity level (FL) values ranged from 36.4 % (Ocimum americanum) to 80.4 % (Cucurma domestica). The medicinal plants with comparatively lower FL (below 40 FL value) need proper attention. Informant consensus factor (ICF) value ranged from 0.41 to 0.9. The disease category relating to digestive disorders and cardiovascular diseases had the highest consensus scores (0.9). With 192 use report scores, the greatest number of plant taxa Oroxylum indicum was used to treat stomachache. The Lois people possess considerable traditional ethnomedical expertise. The vegetation in the area supports rich diversity of medicinal plants, but droughts, agriculture, and deforestation pose great threat to their existence. Of the 5 factors studied considering selected informant based ranking, deforestation records to be the highest risk factor. In-depth studies of prospective species for medication development are crucial, as is scientific backing for local conservation initiatives. Prioritizing species with higher-use reports is also necessary.
{"title":"Ethnobotanical study of medicinal plants used by Lois community of Kakching district, Manipur, India","authors":"Salam Shyamchandra Singh ,&nbsp;Laldinfeli Ralte ,&nbsp;Hmingremhlua Sailo ,&nbsp;Athokpam Pinokiyo ,&nbsp;M. Roma Devi ,&nbsp;Sandhyarani Devi Khomdram ,&nbsp;Y. Tunginba Singh","doi":"10.1016/j.tfp.2024.100765","DOIUrl":"10.1016/j.tfp.2024.100765","url":null,"abstract":"<div><div>The majority of Manipuri still rely on medicinal plants, which have been utilized for generations. The Lois people, who live in the Kakching district of Manipur, have a rich cultural heritage and have long used plants for various purposes, including the production of traditional herbal medicine. Despite the usage of indigenous medicinal plants in the Kakching district, ethnobotanical research has not yet been conducted. The present study aims to document and analyze traditional medicinal plants as well as their associated knowledge and practices among local communities. Quantitative ethnobotanical data was documented from October 2022 to December 2023 using semi-structured interviews, in-person discussions, group discussions, and guided field trips. There were 140 informants for this cross sectional study. Maximum informants were characterized by mostly male practitioners, age around 45–60 years, with high school and diploma level education, farmers and herbalists by occupation. All the collected data were analyzed using MS Excel Spreadsheet, Graph Pad Prism, and ethnobotany R package in R software. We identified 236 traditional medicinal plant species distributed in 80 families and 184 genera used for treating 59 distinct medical conditions under 13 recognized categories of ailments in the present study. With the biggest number of species given and the highest number of dominant families in the area, the Fabaceae and Lamiaceae (20 species) were identified. The most often employed plant parts were leaves and the primary method of preparing cures was decoction. Fidelity level (FL) values ranged from 36.4 % (<em>Ocimum americanum</em>) to 80.4 % (<em>Cucurma domestica</em>). The medicinal plants with comparatively lower FL (below 40 FL value) need proper attention. Informant consensus factor (ICF) value ranged from 0.41 to 0.9. The disease category relating to digestive disorders and cardiovascular diseases had the highest consensus scores (0.9). With 192 use report scores, the greatest number of plant taxa <em>Oroxylum indicum</em> was used to treat stomachache. The Lois people possess considerable traditional ethnomedical expertise. The vegetation in the area supports rich diversity of medicinal plants, but droughts, agriculture, and deforestation pose great threat to their existence. Of the 5 factors studied considering selected informant based ranking, deforestation records to be the highest risk factor. In-depth studies of prospective species for medication development are crucial, as is scientific backing for local conservation initiatives. Prioritizing species with higher-use reports is also necessary.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100765"},"PeriodicalIF":2.7,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Farmers’ knowledge, attitude, and motivation for adoption of climate-smart agroforestry in two contrasting agroecosystems of Rwanda
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-22 DOI: 10.1016/j.tfp.2024.100766
Donatien Ntawuruhunga , Edwin Estomii Ngowi , Halima Omari Mangi , Raymond John Salanga , Kenneth Lynch Leonard
Globally, the experiences show that climate-smart agroforestry (CSAF) can contribute to sustainable agricultural growth and rural transformation while tackling climate change. This study evaluated the interplay between farmers’ knowledge, attitude, and motivation to adopt CSAF. The study used data from 381 farmers surveyed in Bugesera and Rulindo regions, Rwanda. Bugesera, in the semi-arid savannah lowlands, and Rulindo, in the temperate central highlands, were purposively selected for their distinct physiographic features. A questionnaire was used to collect the data and descriptive statistics, Pearson correlation, and binomial logistic regression were performed for data analysis. The results from the correlation analysis showed that various revealed factors, including gender, civil status, education, household size, household poverty level (ubudehe), farm size, farmers’ experience in CSAF, ownership of radio and mobile phone, livestock herd size, farm-river distance, training, and extension visits, influenced farmers’ knowledge in adopting CSAF. The most significant positive correlation was found between owning a mobile phone and farmers’ knowledge, while the weakest positive correlation existed between farmers’ gender and their knowledge of CSAF. These factors equally affected farmers’ attitudes, except for statistically insignificant gender. The most significant positive correlation was between owning a mobile phone and farmers’ attitudes, while the weakest was between extension visits and farmers’ attitudes towards CSAF. Further, results revealed a positively significant relationship between the farmers’ ages and their motivation to adopt CSAF. Additionally, the binomial logit regression analysis showed that farmers knowledgeable with CSAF were 2.5 times more likely to practice CSAF than farmers without such knowledge. Moreover, being motivated by CSAF benefits increased the likelihood of adopting CSAF by 0.6 times compared to unmotivated farmers. By filling the gap in understanding farmers’ knowledge, attitudes, and motivations toward CSAF adoption, this study contributes to advancing sustainable agricultural practices in Rwanda. It provides a blueprint for similar initiatives elsewhere.
{"title":"Farmers’ knowledge, attitude, and motivation for adoption of climate-smart agroforestry in two contrasting agroecosystems of Rwanda","authors":"Donatien Ntawuruhunga ,&nbsp;Edwin Estomii Ngowi ,&nbsp;Halima Omari Mangi ,&nbsp;Raymond John Salanga ,&nbsp;Kenneth Lynch Leonard","doi":"10.1016/j.tfp.2024.100766","DOIUrl":"10.1016/j.tfp.2024.100766","url":null,"abstract":"<div><div>Globally, the experiences show that climate-smart agroforestry (CSAF) can contribute to sustainable agricultural growth and rural transformation while tackling climate change. This study evaluated the interplay between farmers’ knowledge, attitude, and motivation to adopt CSAF. The study used data from 381 farmers surveyed in Bugesera and Rulindo regions, Rwanda. Bugesera, in the semi-arid savannah lowlands, and Rulindo, in the temperate central highlands, were purposively selected for their distinct physiographic features. A questionnaire was used to collect the data and descriptive statistics, Pearson correlation, and binomial logistic regression were performed for data analysis. The results from the correlation analysis showed that various revealed factors, including gender, civil status, education, household size, household poverty level (<em>ubudehe</em>), farm size, farmers’ experience in CSAF, ownership of radio and mobile phone, livestock herd size, farm-river distance, training, and extension visits, influenced farmers’ knowledge in adopting CSAF. The most significant positive correlation was found between owning a mobile phone and farmers’ knowledge, while the weakest positive correlation existed between farmers’ gender and their knowledge of CSAF. These factors equally affected farmers’ attitudes, except for statistically insignificant gender. The most significant positive correlation was between owning a mobile phone and farmers’ attitudes, while the weakest was between extension visits and farmers’ attitudes towards CSAF. Further, results revealed a positively significant relationship between the farmers’ ages and their motivation to adopt CSAF. Additionally, the binomial logit regression analysis showed that farmers knowledgeable with CSAF were 2.5 times more likely to practice CSAF than farmers without such knowledge. Moreover, being motivated by CSAF benefits increased the likelihood of adopting CSAF by 0.6 times compared to unmotivated farmers. By filling the gap in understanding farmers’ knowledge, attitudes, and motivations toward CSAF adoption, this study contributes to advancing sustainable agricultural practices in Rwanda. It provides a blueprint for similar initiatives elsewhere.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100766"},"PeriodicalIF":2.7,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of heterogeneous habitats on the taxonomic and functional diversity of avifauna in an eastern Himalayan foothill landscape, India
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-21 DOI: 10.1016/j.tfp.2024.100764
Vivek Chetry, Prasanta Kumar Saikia, Malabika Kakati Saikia, Kuladip Sarma, Pranjal Mahananda
The Eastern Himalaya in India is known for its rich avian biodiversity, often supported by the variation in habitat type and distribution. In this context, our study investigated the influence of habitat heterogeneity on avian assemblages in a foothill forest. We estimated the taxonomic and functional diversity of birds, considering species richness and abundance as species weightage. Our avian surveys, conducted from September 2021 to September 2023, recorded 2753 individuals representing 233 bird species, providing a comprehensive picture of avian diversity in the region. Taxonomic and functional diversity indices varied across the habitats. Shannon-Weiner diversity index and functional evenness were high in dense forest, while the forest edge showed high functional richness. Riparian habitat had the lowest Shannon-Weiner diversity but exhibited high functional divergence. Moreover, avian richness and abundance were significantly affected by habitat type. Indicator species analysis revealed that most habitats were associated with several invertebrate-feeding species. The foraging guild composition also significantly differed across the habitats. The presence of globally threatened and near-threatened species highlights the conservation significance of the study area. The results of our study underscore the critical role of habitat heterogeneity in the conservation of diverse bird species. In addition, our results highlight the importance of developing conservation strategies tailored to the specific needs of different bird functional groups to ensure the long-term survival of bird populations.
{"title":"Influence of heterogeneous habitats on the taxonomic and functional diversity of avifauna in an eastern Himalayan foothill landscape, India","authors":"Vivek Chetry,&nbsp;Prasanta Kumar Saikia,&nbsp;Malabika Kakati Saikia,&nbsp;Kuladip Sarma,&nbsp;Pranjal Mahananda","doi":"10.1016/j.tfp.2024.100764","DOIUrl":"10.1016/j.tfp.2024.100764","url":null,"abstract":"<div><div>The Eastern Himalaya in India is known for its rich avian biodiversity, often supported by the variation in habitat type and distribution. In this context, our study investigated the influence of habitat heterogeneity on avian assemblages in a foothill forest. We estimated the taxonomic and functional diversity of birds, considering species richness and abundance as species weightage. Our avian surveys, conducted from September 2021 to September 2023, recorded 2753 individuals representing 233 bird species, providing a comprehensive picture of avian diversity in the region. Taxonomic and functional diversity indices varied across the habitats. Shannon-Weiner diversity index and functional evenness were high in dense forest, while the forest edge showed high functional richness. Riparian habitat had the lowest Shannon-Weiner diversity but exhibited high functional divergence. Moreover, avian richness and abundance were significantly affected by habitat type. Indicator species analysis revealed that most habitats were associated with several invertebrate-feeding species. The foraging guild composition also significantly differed across the habitats. The presence of globally threatened and near-threatened species highlights the conservation significance of the study area. The results of our study underscore the critical role of habitat heterogeneity in the conservation of diverse bird species. In addition, our results highlight the importance of developing conservation strategies tailored to the specific needs of different bird functional groups to ensure the long-term survival of bird populations.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100764"},"PeriodicalIF":2.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Towards inclusive conservation governance in forest landscape co-management: Insights from the Yarlung Tsangpo river basin
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-21 DOI: 10.1016/j.tfp.2024.100762
Ting Ma , Peng Wang , Ding Yang , Zhi Wang
Co-management involves sharing resource management duties between the state and user groups. In the Yarlung Tsangpo River Basin (YTRB), resource management is fragmented across township-level governments, resulting in coordination challenges and the exclusion of critical stakeholders from decision-making processes. This research presents feedback and recommendations from focus group discussions with local residents and officials in the YTRB on their experiences with "forest landscape co-management." Participants advocated for a fairer and more inclusive conservation mechanism. The paper concludes with discussions on key issues such as equity, empowerment, and gender, emphasizing the need for a shift from co-management to an inclusive conservation governance model. This model would facilitate joint deliberations and decision-making among diverse stakeholders. The study underscores that adopting an inclusive conservation governance approach in the YTRB can enhance forest resource protection and conservation through shared responsibility. It also suggests that such a framework can organize forest resource management to achieve local sustainability. Furthermore, the research provides a baseline for forest resource planners to adopt shared responsibility, mitigating conflicts among users and ensuring that those affected by decisions can understand and accept common resource management goals.
{"title":"Towards inclusive conservation governance in forest landscape co-management: Insights from the Yarlung Tsangpo river basin","authors":"Ting Ma ,&nbsp;Peng Wang ,&nbsp;Ding Yang ,&nbsp;Zhi Wang","doi":"10.1016/j.tfp.2024.100762","DOIUrl":"10.1016/j.tfp.2024.100762","url":null,"abstract":"<div><div>Co-management involves sharing resource management duties between the state and user groups. In the Yarlung Tsangpo River Basin (YTRB), resource management is fragmented across township-level governments, resulting in coordination challenges and the exclusion of critical stakeholders from decision-making processes. This research presents feedback and recommendations from focus group discussions with local residents and officials in the YTRB on their experiences with \"forest landscape co-management.\" Participants advocated for a fairer and more inclusive conservation mechanism. The paper concludes with discussions on key issues such as equity, empowerment, and gender, emphasizing the need for a shift from co-management to an inclusive conservation governance model. This model would facilitate joint deliberations and decision-making among diverse stakeholders. The study underscores that adopting an inclusive conservation governance approach in the YTRB can enhance forest resource protection and conservation through shared responsibility. It also suggests that such a framework can organize forest resource management to achieve local sustainability. Furthermore, the research provides a baseline for forest resource planners to adopt shared responsibility, mitigating conflicts among users and ensuring that those affected by decisions can understand and accept common resource management goals.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100762"},"PeriodicalIF":2.7,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of direct and indirect drivers of land use and land cover changes from agriculture to Eucalyptus plantation using the DPSIR framework in Sinan and Mecha Districts of Northwestern Ethiopia
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-18 DOI: 10.1016/j.tfp.2024.100759
Kassa Chanie Wubetie, Asabeneh Alemayehu, Engidayehu Melaku
In Ethiopia, several factors are driving the conversion of agricultural land into Eucalyptus plantations. This study focuses on the Sinan and Mecha districts in northwest Ethiopia to identify the drivers behind this shift from agriculture to Eucalyptus forests. We used purposive and simple random sampling to select study areas and households. Data were collected through household surveys, key informant interviews, and focus group discussions. For data analysis, we employed descriptive statistics, ranking of drivers with a ranking index using the principle of weighted average, t-test, and a binary logistic regression model. The results reveal several key drivers of land use change. The most significant direct factors include using trees as an alternative income source, declining soil fertility, increasing demand for Eucalyptus wood products, and anticipated future returns from Eucalyptus plantations. Additionally, high agricultural input costs, rising wood prices, land degradation, and the shading effects of Eucalyptus on adjacent plots were identified as proximate drivers. Econometric regression analysis shows that family size and landholding size positively influence land use decisions, while distance to nearby towns negatively affects these choices. Respondents also reported challenges such as limited cropland, insufficient grazing land and fodder, land fragmentation, reduced agricultural production, and food shortages following land use conversion. Addressing these challenges is vital for the well-being and resilience of rural households. Implementing strategies like sustainable land management and effective land use policies can help enhance food security, economic stability, and overall quality of life for these communities. Allocating resources to improve soil fertility and landscape management will support sustainable agricultural practices and environmental conservation, benefiting rural households. The findings of this research will provide valuable insights for guiding future research, practices, and policies aimed at sustainable land use planning and food self-sufficiency in rural Ethiopia.
{"title":"Identification of direct and indirect drivers of land use and land cover changes from agriculture to Eucalyptus plantation using the DPSIR framework in Sinan and Mecha Districts of Northwestern Ethiopia","authors":"Kassa Chanie Wubetie,&nbsp;Asabeneh Alemayehu,&nbsp;Engidayehu Melaku","doi":"10.1016/j.tfp.2024.100759","DOIUrl":"10.1016/j.tfp.2024.100759","url":null,"abstract":"<div><div>In Ethiopia, several factors are driving the conversion of agricultural land into Eucalyptus plantations. This study focuses on the Sinan and Mecha districts in northwest Ethiopia to identify the drivers behind this shift from agriculture to Eucalyptus forests. We used purposive and simple random sampling to select study areas and households. Data were collected through household surveys, key informant interviews, and focus group discussions. For data analysis, we employed descriptive statistics, ranking of drivers with a ranking index using the principle of weighted average, t-test, and a binary logistic regression model. The results reveal several key drivers of land use change. The most significant direct factors include using trees as an alternative income source, declining soil fertility, increasing demand for Eucalyptus wood products, and anticipated future returns from Eucalyptus plantations. Additionally, high agricultural input costs, rising wood prices, land degradation, and the shading effects of Eucalyptus on adjacent plots were identified as proximate drivers. Econometric regression analysis shows that family size and landholding size positively influence land use decisions, while distance to nearby towns negatively affects these choices. Respondents also reported challenges such as limited cropland, insufficient grazing land and fodder, land fragmentation, reduced agricultural production, and food shortages following land use conversion. Addressing these challenges is vital for the well-being and resilience of rural households. Implementing strategies like sustainable land management and effective land use policies can help enhance food security, economic stability, and overall quality of life for these communities. Allocating resources to improve soil fertility and landscape management will support sustainable agricultural practices and environmental conservation, benefiting rural households. The findings of this research will provide valuable insights for guiding future research, practices, and policies aimed at sustainable land use planning and food self-sufficiency in rural Ethiopia.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100759"},"PeriodicalIF":2.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Arboricultural codes of ethics lack protection for trees, wildlife, and biodiversity: A review of codes from national and international professional associations
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-17 DOI: 10.1016/j.tfp.2024.100758
Alexander J.F. Martin , Lukas G. Olson , Tenley M. Conway
Arboriculture practices have the potential to negatively impact the natural environment, including through the pruning or removal of trees with cavities or hollows, the misuse of pesticides, and operations that are injurious to wildlife. Mitigating approaches have been limited by market disincentives, under-enforcement, and voluntary best management practices and standards. For arborists in professional associations, codes of ethics (COEs) may have the potential to improve environmentalism within arboriculture while ensuring public trust in the associations themselves. To determine how environmental protection is discussed in arboricultural COEs, we conducted a review of nine COEs from seven national and international arboricultural professional associations, coding for environmental themes and legal/regulatory requirements. Seven COEs included a total of twelve environmentally related themes, most commonly discussing trees (n=8) and the environment (n=5). Wildlife and urban forest health were not mentioned. No COE referenced environmental laws, although six COEs required adherence with laws generally. The lack of specific prohibitions or mandates on environmentally friendly practices may allow practitioners to take advantage of COE loopholes, which would allow environmentally negative practice that could not be disciplined by an ethics committee unless the code was revised. While an alternative means of environmental governance through COEs might examine whether professional members adhered to local laws and regulations, associations may face difficulties in reviewing and properly applying legislation in disciplining their members, particularly when international associations must review legislation outside of the ethics committee's region(s) of practice. We provide recommendations for improving ethics programs, including five suggested additions for COEs.
{"title":"Arboricultural codes of ethics lack protection for trees, wildlife, and biodiversity: A review of codes from national and international professional associations","authors":"Alexander J.F. Martin ,&nbsp;Lukas G. Olson ,&nbsp;Tenley M. Conway","doi":"10.1016/j.tfp.2024.100758","DOIUrl":"10.1016/j.tfp.2024.100758","url":null,"abstract":"<div><div>Arboriculture practices have the potential to negatively impact the natural environment, including through the pruning or removal of trees with cavities or hollows, the misuse of pesticides, and operations that are injurious to wildlife. Mitigating approaches have been limited by market disincentives, under-enforcement, and voluntary best management practices and standards. For arborists in professional associations, codes of ethics (COEs) may have the potential to improve environmentalism within arboriculture while ensuring public trust in the associations themselves. To determine how environmental protection is discussed in arboricultural COEs, we conducted a review of nine COEs from seven national and international arboricultural professional associations, coding for environmental themes and legal/regulatory requirements. Seven COEs included a total of twelve environmentally related themes, most commonly discussing trees (n=8) and the environment (n=5). Wildlife and urban forest health were not mentioned. No COE referenced environmental laws, although six COEs required adherence with laws generally. The lack of specific prohibitions or mandates on environmentally friendly practices may allow practitioners to take advantage of COE loopholes, which would allow environmentally negative practice that could not be disciplined by an ethics committee unless the code was revised. While an alternative means of environmental governance through COEs might examine whether professional members adhered to local laws and regulations, associations may face difficulties in reviewing and properly applying legislation in disciplining their members, particularly when international associations must review legislation outside of the ethics committee's region(s) of practice. We provide recommendations for improving ethics programs, including five suggested additions for COEs.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100758"},"PeriodicalIF":2.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Leaf phenology and tree growth are uncoupled in three deciduous tree species
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-17 DOI: 10.1016/j.tfp.2024.100761
J.Julio Camarero , Álvaro Rubio-Cuadrado
Climate warming is expected to lengthen the phenological season of deciduous broadleaf trees. Such longer phenological seasons could also lead to higher growth rates. This hypothesis was tested by examining and relating leaf phenology and tree-ring width series of three European deciduous tree species (Betula pendula, Fagus sylvatica, Quercus robur). Leaf onset and fall dates were used to define the duration of the phenological season. Leaf phenological variables were compared with climate and radial growth rates (basal area increment) obtained from nearby sites. This comparison was done in 17 sites located across a wide geographical gradient in Europe (7.12–87.80 °E, 46.14–66.37° N). In general, leaf emergence dates are advancing as spring temperatures rise. In most sites and species, growth variability, phenology (dates of leaf emergence and senescence) and the duration of the phenological season were not related. In the few sites where relationships between growth and phenology were found, they changed through time. These findings indicate that a longer phenological season does not entail higher growth rates in deciduous tree species. Climate warming may trigger an earlier start of the phenological season in some species, which may lead to longer phenological seasons, but not necessarily to enhanced radial growth rates and carbon sequestration in the form of woody tissues.
{"title":"Leaf phenology and tree growth are uncoupled in three deciduous tree species","authors":"J.Julio Camarero ,&nbsp;Álvaro Rubio-Cuadrado","doi":"10.1016/j.tfp.2024.100761","DOIUrl":"10.1016/j.tfp.2024.100761","url":null,"abstract":"<div><div>Climate warming is expected to lengthen the phenological season of deciduous broadleaf trees. Such longer phenological seasons could also lead to higher growth rates. This hypothesis was tested by examining and relating leaf phenology and tree-ring width series of three European deciduous tree species (<em>Betula pendula, Fagus sylvatica, Quercus robur</em>). Leaf onset and fall dates were used to define the duration of the phenological season. Leaf phenological variables were compared with climate and radial growth rates (basal area increment) obtained from nearby sites. This comparison was done in 17 sites located across a wide geographical gradient in Europe (7.12–87.80 °E, 46.14–66.37° N). In general, leaf emergence dates are advancing as spring temperatures rise. In most sites and species, growth variability, phenology (dates of leaf emergence and senescence) and the duration of the phenological season were not related. In the few sites where relationships between growth and phenology were found, they changed through time. These findings indicate that a longer phenological season does not entail higher growth rates in deciduous tree species. Climate warming may trigger an earlier start of the phenological season in some species, which may lead to longer phenological seasons, but not necessarily to enhanced radial growth rates and carbon sequestration in the form of woody tissues.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100761"},"PeriodicalIF":2.7,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143127791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantifying the distribution of family forest ownership classifications for US federal income tax
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-16 DOI: 10.1016/j.tfp.2024.100756
Shivan Gc , Gregory E. Frey , Christopher Mihiar , Brett J. Butler , Consuelo Brandeis
Family forest ownerships are classified in federal income tax law as either personal use, investment, or trade or business, and this classification determines the tax rates, deductions, credits, and filing requirements that apply. Tax classification, therefore, has implications for landowners’ overall profit potential and the economic sustainability of forest management. However, the relative proportion of family forest owners in each tax classification has never been estimated before, though many studies have looked at the typologies of family forest owners based on their forest management behavior including participation in policy tools in the past. We develop a novel framework for categorizing family forest owners within discrete tax classifications. By leveraging the data from the National Woodland Owner Survey, we estimate the distribution of owners across tax classification and account for the area of forestland covered under various tax provisions. Additionally, we construct logit models to understand demographic and ownership variables associated with the likelihood of landowners belonging to different tax classifications. The estimates based on our categorization criteria to replicate tax classifications indicate that approximately 12% of family forestlands held in parcels of four hectares or more across the country may be owned by business owners, 49% by investment owners, and 39% by personal use owners. Variation in demographic and forest ownership characteristics were noted among landowners estimated to fall under different tax classifications. The findings of the study are expected to have implications for tax policy and sustainable forest management in the country. It will assist policymakers, land managers, and other concerned stakeholders in understanding how changes in tax law affect family forest owners and how they manage their forests. Information about tax classification criteria used in this study can also be helpful for landowner education and extension purposes. The results obtained can assist in mapping natural disasters and connecting them to the deductibility of casualty losses based on landowner's tax classification in the future.
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引用次数: 0
Natural colonization in abandoned agricultural fields benefits native, insect-pollinated and bird-dispersed woody species
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-15 DOI: 10.1016/j.tfp.2024.100755
N.K. Pedersen, S. Kepfer-Rojas, T. Riis-Nielsen, V.K. Johannsen, I.K. Schmidt
Forests play a crucial role in countering the climate and biodiversity crisis. Increasing forest cover is proposed as one of the most cost-effective tools to mitigate climate change, but the effects of afforestation methods on biodiversity are unclear. The abandonment of farmland for natural colonization has emerged as a resource-efficient approach, though the pace and predictability of colonization raise questions about its contribution to enhancing biodiversity in emerging forests. We analyzed tree and shrub species richness and composition in 31 natural colonization areas on agricultural land abandoned between 1990 and 2018 in Denmark and compared them with forest plantations of similar ages registered in the National Forest Inventory (NFI). As proxies for overall biodiversity, we compared the dominance and distribution of native, insect-pollinated, and bird-dispersed species. Although overall woody-species richness in plantations was higher than in natural colonization, the share of native, bird-dispersed, and insect-pollinated species was higher in natural colonization sites. Notably, approximately 70 % of the native woody species registered in Danish NFI were identified in the 31 natural colonization sites. Species richness in natural colonization areas was markedly higher on loamy than sandy soils, whereas in plantations, the number of species was similar between the two soil types. Furthermore, comparing different soil types, woody species composition was more similar in plantations than in natural colonization. These results demonstrate that afforestation with natural colonization favors native woody species and species associated with higher biodiversity, especially in loamy soils.
{"title":"Natural colonization in abandoned agricultural fields benefits native, insect-pollinated and bird-dispersed woody species","authors":"N.K. Pedersen,&nbsp;S. Kepfer-Rojas,&nbsp;T. Riis-Nielsen,&nbsp;V.K. Johannsen,&nbsp;I.K. Schmidt","doi":"10.1016/j.tfp.2024.100755","DOIUrl":"10.1016/j.tfp.2024.100755","url":null,"abstract":"<div><div>Forests play a crucial role in countering the climate and biodiversity crisis. Increasing forest cover is proposed as one of the most cost-effective tools to mitigate climate change, but the effects of afforestation methods on biodiversity are unclear. The abandonment of farmland for natural colonization has emerged as a resource-efficient approach, though the pace and predictability of colonization raise questions about its contribution to enhancing biodiversity in emerging forests. We analyzed tree and shrub species richness and composition in 31 natural colonization areas on agricultural land abandoned between 1990 and 2018 in Denmark and compared them with forest plantations of similar ages registered in the National Forest Inventory (NFI). As proxies for overall biodiversity, we compared the dominance and distribution of native, insect-pollinated, and bird-dispersed species. Although overall woody-species richness in plantations was higher than in natural colonization, the share of native, bird-dispersed, and insect-pollinated species was higher in natural colonization sites. Notably, approximately 70 % of the native woody species registered in Danish NFI were identified in the 31 natural colonization sites. Species richness in natural colonization areas was markedly higher on loamy than sandy soils, whereas in plantations, the number of species was similar between the two soil types. Furthermore, comparing different soil types, woody species composition was more similar in plantations than in natural colonization. These results demonstrate that afforestation with natural colonization favors native woody species and species associated with higher biodiversity, especially in loamy soils.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100755"},"PeriodicalIF":2.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving carbon storage and greenhouse gas emissions avoidance through harvested wood products use
IF 2.7 Q1 FORESTRY Pub Date : 2024-12-15 DOI: 10.1016/j.tfp.2024.100757
Isabelle Ménard , Evelyne Thiffault , Michael Magnan , Werner A. Kurz , François Hébert , Jean-François Boucher
Afforestation can mitigate climate change by creating new carbon sinks and increasing wood supply. However, climate change can impact the growth of trees in afforested areas and affect their characteristics, and the harvested wood products that can be manufactured from them. This study aimed to quantify to what extent the quality of the wood supply directed to primary processing is influenced by climate change and alters the carbon storage of wood products. A multi-model approach was used to estimate the carbon stocks in harvested biomass resulting from plantations of black spruce on open woodlands and hybrid poplar on abandoned farmlands in Québec (Canada) under a gradient of climate forcing projections. Results suggest that increased climate forcing negatively impacts the quality of the harvested wood product basket and influences the relative amount of lumber vs. pulpwood. However, according to our assumptions, the decay of solid wood products in landfills produced more methane emissions than paper, which may constrain their climate change mitigation potential in the absence of methane capture or flaring. The cascading use of solid wood products in bioenergy at the end of their service life significantly reduced overall emissions. This study highlights how comprehensive afforestation strategies can, in the long term, be used to maximize the carbon storage potential of harvested wood products sourced from new plantations, as long as these strategies also include better use of pulp-quality wood, improved cascading use at the end-of-life of wood products and, most importantly, the avoidance of methane emissions from landfilled wood.
{"title":"Improving carbon storage and greenhouse gas emissions avoidance through harvested wood products use","authors":"Isabelle Ménard ,&nbsp;Evelyne Thiffault ,&nbsp;Michael Magnan ,&nbsp;Werner A. Kurz ,&nbsp;François Hébert ,&nbsp;Jean-François Boucher","doi":"10.1016/j.tfp.2024.100757","DOIUrl":"10.1016/j.tfp.2024.100757","url":null,"abstract":"<div><div>Afforestation can mitigate climate change by creating new carbon sinks and increasing wood supply. However, climate change can impact the growth of trees in afforested areas and affect their characteristics, and the harvested wood products that can be manufactured from them. This study aimed to quantify to what extent the quality of the wood supply directed to primary processing is influenced by climate change and alters the carbon storage of wood products. A multi-model approach was used to estimate the carbon stocks in harvested biomass resulting from plantations of black spruce on open woodlands and hybrid poplar on abandoned farmlands in Québec (Canada) under a gradient of climate forcing projections. Results suggest that increased climate forcing negatively impacts the quality of the harvested wood product basket and influences the relative amount of lumber vs. pulpwood. However, according to our assumptions, the decay of solid wood products in landfills produced more methane emissions than paper, which may constrain their climate change mitigation potential in the absence of methane capture or flaring. The cascading use of solid wood products in bioenergy at the end of their service life significantly reduced overall emissions. This study highlights how comprehensive afforestation strategies can, in the long term, be used to maximize the carbon storage potential of harvested wood products sourced from new plantations, as long as these strategies also include better use of pulp-quality wood, improved cascading use at the end-of-life of wood products and, most importantly, the avoidance of methane emissions from landfilled wood.</div></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":"19 ","pages":"Article 100757"},"PeriodicalIF":2.7,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Trees, Forests and People
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