Trees, Forests and People最新文献

{"title":"A way for livelihood improvement: Systematic review on bamboo forest research","authors":"Amsalu Nigatu Alamerew ,&nbsp;Robert Kozak ,&nbsp;Anil Kumar Shrestha ,&nbsp;Zhen Zhu ,&nbsp;Guangyu Wang","doi":"10.1016/j.tfp.2024.100571","DOIUrl":"10.1016/j.tfp.2024.100571","url":null,"abstract":"<div><p>Bamboo, widely known as \"poor man's timber\" or \"green gold,\" is a key forest resource distributed across tropical and subtropical regions. It is vital for its social, economic, cultural, and ecological benefits, demanding in-depth research for sustainable development. Despite its potential contribution to sustainable development, previous studies on bamboo have been geographically and methodically limited, lacking a comprehensive analysis of its contribution to sustainable livelihoods. This study, employing the PRISMA method for systematic reviews of 127 articles, investigates (1) the distribution and trends of livelihood-based bamboo research and identifies knowledge gaps, (2) bamboo's role in livelihood enhancement, (3) challenges and opportunities in its livelihood values, and (4) strategies to optimize bamboo's livelihood potential. Through this review, we identified most of the research limited to Asia, with limited studies in Africa and Latin America. Out of 1600 species, most of the studies focus on only 83 bamboo species, noting their multifaceted contributions across all livelihood capital types: natural, human, physical, social, and financial. Despite administrative and technical challenges that limit its value, bamboo provides diverse tangible benefits, economic opportunities, environmental improvements, international appeal, and strong sociocultural ties. We advocate for resilient bamboo-based livelihoods through cooperative, participatory, and sustainable management approaches that integrate research and indigenous knowledge to navigate challenges and leverage bamboo's extensive benefits.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324000785/pdfft?md5=7e81998c622605bd2cfdf5b456b860fc&pid=1-s2.0-S2666719324000785-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141052656","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}

{"title":"Allometric models of biomass and essential oils of Aniba rosaeodora Ducke in a tropical middle terrace soil forest of Masisea, Ucayali, Peru","authors":"Jorge M. Revilla-Chávez ,&nbsp;Lyanna H. Sáenz-Ramírez ,&nbsp;Antony C. Gonzales-Alvarado ,&nbsp;Diego G. García-Soria ,&nbsp;Alexandre M. Sebbenn","doi":"10.1016/j.tfp.2024.100594","DOIUrl":"https://doi.org/10.1016/j.tfp.2024.100594","url":null,"abstract":"<div><p>In this study we developed an allometric model to predict the total biomass of the tropical tree of economic value <em>Aniba rosaeodora</em> to manage the sustainable use of natural populations through the use of branches and leaves, in the same way that allows us to evaluate the potential for its domestication and develop plantations. For this, 15 trees were sampled with an average diameter at breast height (DBH) of 9 cm (σ = 7.5 cm, CV = 44 %), height (Th) of 17.6 m (σ = 5.5 m, CV = 31 %), an average total biomass of 277.7 kg (σ = 203.9 kg, CV = 73 %), resulting in an average of 4.5 l of essential oil (σ = 3.3 l, CV = 75 %), and with an oil yield of 1.51 % (σ = 0.34 %, CV = 22.3 %). Thus, 29 allometric models were selected to estimate biomass of the stem (Cb), biomass of green branches (Pb), biomass of secondary branches (Sb), leaf biomass (Lb), total tree biomass (Tb) and essential oil, from variables of easy measurement (diameter) and strong correlation (Spearman's Rho 0.63–0.99; <em>P</em> &lt; 0.05). From the tests, the models with the best correlation coefficients, R² and R²aj were selected to estimate the biomass and essential oil content of each tree. Thus, the equations whose predictor variable is the D50 was the best fit, where Tb=(-1.73388+0.835102D50)², ρ = 0.96; R²aj = 0.962 and Oil=exp(-6.4554+2.54862ln(D50)), ρ = 0.82; R²aj = 0.930, but by an indirect method using total tree biomass (Tb) a better fit can be obtained for essential oil, Oil=1/(-0.0793641+82.2948/Tb), ρ = 0.84; R²aj = 0.998.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324001018/pdfft?md5=560e0401eae8bf82a2fac08ce83190d6&pid=1-s2.0-S2666719324001018-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141243199","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}

{"title":"Contextualizing sustainable forest management and social justice in community-based forest management (CBFM) program in the Philippines","authors":"Juan M. Pulhin ,&nbsp;Mark Anthony M. Ramirez ,&nbsp;Josephine E. Garcia ,&nbsp;Millicent Joyce Q. Pangilinan ,&nbsp;Mary Beatrice S. Evaristo ,&nbsp;Ma.Louiella Rose O. Catudio ,&nbsp;Angelica T. Magpantay ,&nbsp;Sheerah Louise Tasico ,&nbsp;Florencia B. Pulhin ,&nbsp;Joan Laura Abes ,&nbsp;Bryan Joel S. Mariano","doi":"10.1016/j.tfp.2024.100589","DOIUrl":"10.1016/j.tfp.2024.100589","url":null,"abstract":"<div><p>The Philippines' Community-Based Forest Management (CBFM) Program is the primary strategy for sustainable forest management and social justice in the uplands. The upland communities provided a catalytic role to restore degraded forestlands and protect the remaining forest cover in the country, but unlike the timber license agreement (TLA) concessionaires, they do not have enough assets to fulfill their needs and responsibilities. They are also subjected to restrictive policies beyond their capacity to follow. While numerous works of literature have been written on the successes and failures of different modes of community forestry in Asia and the Pacific for the past two decades, very limited, if any, attention has been given to the role of community welfare as a prerequisite for sustainability and social justice in forestry. Using the data on national CBFM assessment in the Philippines, this paper critically examines the CBFM Program after more than two decades of implementation using the community welfare lens. Thematic analysis of results revealed that in achieving sustainability and social justice in forestry, the following crucial elements should be taken into account: (1) land tenure is a crucial aspect of community welfare but the complexity of social-ecological relations must be taken into account; (2) skewed priority towards biophysical targets undermines the importance of socio-economic needs and considerations in the uplands; and (3) restrictive and conflicting policies significantly diminishes the potential of CBFM for transformative change.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324000967/pdfft?md5=55579c35b8710710cbc4f2532718aba0&pid=1-s2.0-S2666719324000967-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141280114","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}

{"title":"The relationship between trampling damages on roots and wood decay in Norway spruce forests used for silvopasture","authors":"A.M. Hietala ,&nbsp;W. Lara ,&nbsp;A. Kolsgaard ,&nbsp;S. Seljegard ,&nbsp;N.E. Nagy ,&nbsp;I. Børja ,&nbsp;T.A. Justad ,&nbsp;Y. Rekdal ,&nbsp;E. Bergseng ,&nbsp;H. Solheim","doi":"10.1016/j.tfp.2024.100598","DOIUrl":"https://doi.org/10.1016/j.tfp.2024.100598","url":null,"abstract":"<div><p>Forest grazing by free-roaming livestock is a common practice in many countries. The forestry sector sees the practice as unfortunate owing to several reasons, such as damages inflicted by grazing in young plantations. Concerning Norway spruce forests, a tree species known to develop wood decay with high frequency followed from stem bark damage, there is a strong perception among foresters that the trampling damage caused by livestock on the superficial root system of this tree leads to decay. Because of the very limited scientific documentation available on this topic, we pursued a clarification by investigating three 38- to 56-year-old Norway spruce forests used for silvopasture. Two types of injuries were observed on exposed roots: bark cracks characterized by resin exudation, and injuries involving localized bark peeling and exposure of the underlying wood. These injuries occurred up to 250 cm away from the root collar, with the sector 50–150 cm away from the root collar showing the highest incidence of injuries. In two of the forest stands, wood within the injured root areas was primarily colonized by the wound parasite <em>Corinectria fuckeliana</em> or species of the order Helotiales, fungi that do not cause wood decay. Wood colonization of injured roots by <em>Heterobasidion</em> species, the most frequent wood decay fungi of Norway spruce, was common in the third stand, but only in a few cases it was possible to deduce that the colonization had probably initiated via trampling injuries on roots. In a few cases, an injury was located at stem base at the root collar height along paths used by animals, and in such cases, it was obvious that stem colonization by <em>Heterobasidion</em> species had initiated via the wound. The relatively small amount of data warrants caution when drawing conclusions. Considering the high establishment frequency of decay via stem bark wounds of Norway spruce observed in previous studies, our data would suggest that roots are generally better equipped to defend themselves upon infliction of superficial wounds than stem of this tree species. The likelihood of trampling injuries leading to decay may vary considerably between different stands, this presumably depending on the level of local propagule pressure by pathogenic wood decay fungi and the frequency of damages close to root collar.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324001055/pdfft?md5=5bcd6ae6a616f649cb2f2e38ebbe9a7e&pid=1-s2.0-S2666719324001055-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141308287","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}

{"title":"Woody species diversity, structure and regeneration status of the church forests in West Gojjam Zone, Northwestern Ethiopia","authors":"Abebe Ayele ,&nbsp;Ali Seid ,&nbsp;Amare Bitew Mekonnen ,&nbsp;Wubetie Adnew Wassie ,&nbsp;Getahun Yemata ,&nbsp;Endalamaw Yihune ,&nbsp;Animut Mekuriaw ,&nbsp;Lidiya Shimeles","doi":"10.1016/j.tfp.2024.100570","DOIUrl":"10.1016/j.tfp.2024.100570","url":null,"abstract":"<div><p>Ethiopia's diverse ecology faces challenges from significant deforestation. Church forests are relatively protected although under pressure from agricultural expansion, grave house construction and climate related factors. The present study was aimed to assess the woody species composition, structure and regeneration status of church forests in the West Gojjam Zone. Twenty-six church forests were selected using stratified random sampling based on agroecology, elevation, forest size, and distance from population centers. A total of 175 main plots of 20 m × 20 m (400 m²) for trees, 875 subplots of 5 m × 25 m (25 m²) for saplings, and 875 subplots of 1 m × 21 m (1 m²) for seedlings were laid down. Diameter at breast height (DBH) was measured for woody plants with a DBH ≥2.5 cm and also height ≥ 2.5 m. Diversity and structural analysis of the woody species were carried out using appropriate tools. The regeneration status of the study forests was evaluated based on the number of seedlings, sapling and matured plants. A total of 111 woody species that belong to 95 genera and 51 families with 72 (64.86 %) trees, 23 (20.72 %) shrubs, 8 (7.2 %) shrubs/trees and 8 (7.2) lianas were identified. In the study sites, the woody plant species consist of 82.88 % indigenous, 15.32 % exotic, and 1.8 % endemic species. Fabaceae was the dominant family in West Gojjam zone church forests. The Shannon diversity ranged from 0.99 to 3.47, with an average of 2.55, and evenness varied from 0.5 to 0.96 (average 0.82). Species richness ranged from 7 to 45 with the average value of 23.81, and a total stem density of 5880 individuals per hectare. Additionally, 5923 saplings and 6136 seedlings per hectare were recorded. The most abundant species include <em>Eucalyptus camaldulensis, Calpurnia aurea</em>, and <em>Juniperus procera</em>. The average basal area was 29.268 m²/ha for the studied church forests, with <em>Ficus vasta</em> having the highest basal area. <em>Juniperus procera</em> and <em>Rhus vulgaris</em> exhibited the highest Importance Value index (IVI), while <em>Premna schimperi</em>, and <em>Myrtus communis</em> had the lowest IVI. The overall regeneration status of west Gojjam church forests was found to be good. Significant differences in woody species composition and diversity were observed between church forests. The study revealed the importance of church forests in the West Gojjam Zone for plant diversity conservation, revealing their resilience and potential for sustainable protection of forests despite the challenges like deforestation and climate change, and their potential for sustainable maintenance. As we have already seen, some of the church's forests were converted to agriculture as a source of income for the church. This practice is dangerous for the survival of the endemic plants in the church forests and leads to deforestation. Therefore, it is recommended to form an alternative source of income for the ch","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324000773/pdfft?md5=dcd3162f7aae77e0cb51202d73d91e17&pid=1-s2.0-S2666719324000773-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141130317","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}

{"title":"Farmers’ preferences for adopting agroforestry in the Eastern Province of Rwanda: A choice experiment","authors":"Jean Bosco Nkurikiye ,&nbsp;Valens Uwizeyimana ,&nbsp;Kato Van Ruymbeke ,&nbsp;Iris Vanermen ,&nbsp;Bruno Verbist ,&nbsp;Alfred R. Bizoza ,&nbsp;Liesbet Vranken","doi":"10.1016/j.tfp.2024.100592","DOIUrl":"https://doi.org/10.1016/j.tfp.2024.100592","url":null,"abstract":"<div><p>Agroforestry is recognized as an effective land restoration strategy in Rwanda. To effectively implement agroforestry practices, it is crucial to examine and address the preferences of farmers. However, there is limited knowledge concerning farmers’ preferences for different agroforestry characteristics and their level of willingness to engage in such systems. This paper examines farmers’ preferences for adopting agroforestry in the Eastern Province of Rwanda using a discrete choice experiment (DCE) conducted among 248 households. The analysis conducted at plot level included a total of eight attributes: number of fruit trees, number of non-fruit trees, root system and canopy, change in maize yield resulting from tree planting, extension assistance, additional labor, distance to the tree nursery, and the cost of tree seedlings. Results indicate that farmers are generally willing to adopt agroforestry practices. They prefer agroforestry systems that incorporate non-fruit and particularly fruit trees, trees with smaller canopies, agroforestry systems with potential to increase maize yields, and regular extension assistance. However, farmers dislike increases in the cost of tree seedlings. Furthermore, findings reveal two distinct latent classes of plots, encompassing 34.5 % (Class 1) and 65.5 % (Class 2) of the plots. Farmers in Class 1 possess plots that are farther away from their homesteads and are indifferent towards the number of trees to be planted but prefer trees that increase maize yields. Farmers in Class 2 exhibit a strong inclination towards planting a greater number of trees that increase maize yields and have a small canopy. The proximity to tree nurseries and the availability of low-cost tree seedlings contribute to the likelihood of tree planting in this class. This study recommends aligning agroforestry-related policies and interventions with the preferences and needs of the farmers, taking into account plot characteristics.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324000992/pdfft?md5=a18bce2840629efefa325c40249612dc&pid=1-s2.0-S2666719324000992-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141243172","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}

{"title":"Control of invasive conifers in temperate Andean forests promotes native vegetation restoration, but requires continuous management","authors":"Andrés Fuentes-Ramirez ,&nbsp;Rodrigo Vargas-Gaete ,&nbsp;Octavio Toy-Opazo ,&nbsp;Nayadeth Muñoz-Gómez ,&nbsp;Christian Salas-Eljatib ,&nbsp;Aníbal Pauchard","doi":"10.1016/j.tfp.2024.100581","DOIUrl":"10.1016/j.tfp.2024.100581","url":null,"abstract":"<div><p>Non-native conifers have been planted widely because of their growth potential and wood quality. However, many of them have become invasive in the introduced ranges. In Chile, the initial introduction of non-native conifers helped the recovery of degraded land, but today some pine species present a high invasion risk when they are not properly managed, leading to detrimental impacts on natural ecosystems and biodiversity. Such is the case of Douglas fir (<em>Pseudotsuga menziesii</em>), a species listed as invasive in south-central Chile, as well as in many other countries, when it establishes beyond the original plantation range. The main goal of this research was to characterize the invasion pattern of <em>P. menziesii</em> within a recently-declared protected area nearby the Conguillío National Park in the Andes Cordillera. We aimed at determining the key factors that promote the invasion of <em>P. menziesii</em> outside the original plantations. We established five 1,000 m² sampling transects (i.e., 100×10 m), considering two invasion conditions: (i) within the native forest and (ii) far into open scrub areas, both adjacent to <em>P. menziesii</em> plantations. We measured forest structure, soil nutrients, the floristic composition and pine regeneration before and after controlling the invasion within each study conditions. We found that <em>P. menziesii</em> density and soil nutrient availability in the soil decreased with the distance from the plantation. In addition, an increase in native species cover was found after removing pines, but also noted the ability of <em>P. menziesii</em> to readily re-invade the native forest after removal. These results indicate the need for continuous control of <em>P. menziesii</em>, especially inside the native forest at the early stages of invasion. We discuss the need for better plantation management to prevent its spread into natural areas and protect native forests from non-native conifers invasion.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324000888/pdfft?md5=dd1caf0b55394a286af279435c580994&pid=1-s2.0-S2666719324000888-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141142181","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}

{"title":"Traditional ecological knowledge and medicinal plant diversity usage among the Mullu Kuruman tribes of Wayanad district of Kerala, India and its implications for biodiversity conservation in the face of climate change","authors":"Thattantavide Anju,&nbsp;Ajay Kumar","doi":"10.1016/j.tfp.2024.100595","DOIUrl":"https://doi.org/10.1016/j.tfp.2024.100595","url":null,"abstract":"<div><p>Mullu Kuruman tribes majorly reside in the Wayanad district of Kerala, India. Their dietary practices and food systems are deeply intertwined with wild and underutilised plants, but modern interventions and globalisation have altered them. Therefore, understanding their traditional ecological knowledge regarding the plants used for food and medicine is important for biodiversity conservation and the sustainability of the resources. This study, therefore, explores traditional ecological knowledge of the diversity of wild plant use among 125 respondents from the Mullu Kuruman tribe. Data was collected through semi-structured interviews in Malayalam during household visits and walks in gardens and forests. This study documents 111 plant species across 85 genera and 42 botanical families. Most of these plants were used for food (66.66 %), while 26.13 % were used for medicinal purposes. <em>Bambusa bambos</em> recorded the highest Use Report (281), Cultural Importance Index (2.248), Relative Importance Index (1), Use Value (2.248), and Cultural Value Index (1.327). This study shows the rich diversity of the plants used by the Mullu Kurumans, which is important for their food security and resilience. The agroecological diversity of climate-resilient crops such as <em>Eleusine coracana, Panicum sumatrense</em>, and <em>Sorghum bicolor</em> is suitable for dryland agriculture. Leafy vegetables such as <em>Alternanthera sessilis</em>, and <em>Basella rubra</em>, and fruits such as <em>Artocarpus incisus, Canavalia brasiliensis</em> and <em>Ziziphus oenopolia</em> which are rich in minerals and vitamins can enhance their health and well-being. Using carbohydrate-rich plants such as <em>Dioscorea</em> spp., <em>Amorphophallus paeonifoliius</em>, and C<em>olacasia esculenta</em> contributes to their food security. These insights are crucial for sustainable species use and conservation. This and similar studies from other parts of the world offer new insights into the use of local agro-ecological diversity of plants by the tribal communities to deal with climate change and food security challenges.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266671932400102X/pdfft?md5=b59768c23a70f23bd20b203b340a9d3e&pid=1-s2.0-S266671932400102X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141308289","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}

{"title":"Forecasting forest management impacts on regeneration traits of high socio-economic value species in Senegal's Sudanian zone, West Africa","authors":"Niang Fatimata ,&nbsp;Marchand Philippe ,&nbsp;Fenton Nicole J ,&nbsp;Sambou Bienvenu ,&nbsp;Bouchard Elise","doi":"10.1016/j.tfp.2024.100602","DOIUrl":"https://doi.org/10.1016/j.tfp.2024.100602","url":null,"abstract":"<div><p>Forest management can have major impacts on the dynamic of ecological communities, including shifts in reproduction and survival strategies in newly recruited individuals. This study aims to predict the probability of presence of saplings of various species in managed forests in the Sudanian domain of Senegal based on their functional traits. Data on functional traits and the main commercial and domestic uses of twenty high-socio-economic value species were collected, along with their presence-absence, in 12, 832 plots from twenty sites in Senegal's savannahs spanning four different types of forest management, including unmanaged forests, old managed forests, recently managed forests, and community reserve forests. Mixed logistic regression models were used to predict whether high-value species would be present in different forest management types, depending on their main uses, and regeneration, growth and reproduction functional traits. We hypothesised that forest management would favour species with more efficient colonising and competitive abilities, particularly at high levels of disturbance. Our findings demonstrated that unmanaged forests were more likely to host high-value species, regardless of their functional traits and main uses. These protected forests also hosted the greatest variety of regeneration functional traits, heights and uses. Old managed forests were more likely to host high-value species compared to recently managed and community reserve forests. Moreover, high-value species capable of vegetative regeneration and those with low maximum height were more likely to occur in all types of forests, but this trend was more pronounced under higher management and disturbance intensities. This study highlights that the availability of forest products can be optimised by encouraging management strategies that promote a diversity of functional traits rather than the selective harvesting of certain high-value species. Additionally, the temporal variation in the responses of tree species could be beneficial for forest management, with more diverse values of functional traits and more high-value species being present in older managed forests relative to newly managed forests. These results indicate that it is essential to promote forest resilience after management by protecting high-value species that have the potential to restore forest functional composition over time in managed forests.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324001092/pdfft?md5=00aa919ac1823a236fb5d0872ad6d8cc&pid=1-s2.0-S2666719324001092-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141325916","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}

{"title":"Water purification – an essential service from forest ecosystems, and farming practices in the Pong River Basin, Northeast Thailand","authors":"Hathaichanok Jaikawna ,&nbsp;Adcharaporn Pagdee","doi":"10.1016/j.tfp.2024.100599","DOIUrl":"https://doi.org/10.1016/j.tfp.2024.100599","url":null,"abstract":"<div><p>Deforestation often results in biodiversity depletion, land degradation, and loss of forest ecosystem services such as water purification. This research examined the relationship between natural forest areas in the Pong River Basin (PRB), northeast Thailand, and water quality in the Pong River system, one of the country's most polluted rivers. Water parameters were measured in 15 tributaries where samples were collected 500 m upstream from the outlets, and 2–5 m from the streambanks during summer, rainy, and winter seasons in 2021. Land use and land cover (LULC) were classified by a supervised classification method in QGIS using LANDSAT8 satellite imagery and USGS SRTM data. Vegetative surveys were conducted near the sampling locations which included species richness and density. Water characteristics at all the sites were under Thailand's Water Quality Standard, except a level of biological oxygen demand (avg. BOD = 3.52 mg/L). The upper PRB, covered with more forested areas with higher tree densities along streambanks (∼43 % of the basin, 619 trees/ha), revealed better water quality including a higher concentration of dissolved oxygen (avg. DO = 7.57 mg/L) and a lower level of fecal coliform bacteria (avg. FCB = 642 MPN/100 mL). In contrast, the lower PRB having larger areas of farmlands and smaller forests (∼63 % and 23 %, respectively) yielded higher concentrations of FCB (avg. = 1,353 MPN/100 mL) and phosphates (avg. PO₄^3- = 0.34 mg/L). Positive correlations were found between the amount of forestlands (% of the sub-basin) with DO and nitrate concentrations (<em>r</em> = 0.468 and 0.409, p-value &lt; 0.05, respectively), while agricultural areas were correlated with FCB (<em>r</em> = 0.414, p-value &lt; 0.05). Amounts of forests determine water purity, while farmlands denoting dirtiness. These findings show that water purification is an essential forest ecosystem service, critical for stream health.</p></div>","PeriodicalId":36104,"journal":{"name":"Trees, Forests and People","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666719324001067/pdfft?md5=0c2979da3d6545ed3745af09619ef86c&pid=1-s2.0-S2666719324001067-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141303089","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}