T. Okuda, T. Yamada, M. Hiratsuka, K. Fujikawa, M. Ishizuka, E. Hlaing, Thant Shin
{"title":"Introduction to “Role of Non-Timber Forest Products (NTFP) for local benefit and forest resource sustainment in Myanmar”","authors":"T. Okuda, T. Yamada, M. Hiratsuka, K. Fujikawa, M. Ishizuka, E. Hlaing, Thant Shin","doi":"10.3759/tropics.sint00","DOIUrl":"https://doi.org/10.3759/tropics.sint00","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49178076","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}
{"title":"Effects of 9 years of continuous field phosphorus fertilization on adsorption of dissolved organic matter in tropical forest soil","authors":"Taiki Mori, Xiankai Lu, Cong Wang, Qinggong Mao, Senhao Wang, Wei Zhang, Jiangming Mo","doi":"10.3759/tropics.ms23-05","DOIUrl":"https://doi.org/10.3759/tropics.ms23-05","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135312058","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}
{"title":"Specialized predation on arthropod eggs in the myrmicine ant Calyptomyrmex rectopilosus collected in northern Vietnam, with a description of new species of Calyptomyrmex from Bogor, West Java, Indonesia","authors":"F. Ito, P. Luong, S. Yamane","doi":"10.3759/tropics.ms22-08","DOIUrl":"https://doi.org/10.3759/tropics.ms22-08","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70010474","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}
{"title":"Biomass and floristics of a secondary forest in West Kalimantan, Indonesia","authors":"Mumammad Mansur, F. Brearley","doi":"10.3759/tropics.ms22-09","DOIUrl":"https://doi.org/10.3759/tropics.ms22-09","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70010536","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}
M. Ashraf, T. Hosaka, Ahmad R Norhisham, R. Sanusi, K. Tohiran, Raja Zulkifli, B. Azhar
{"title":"Key environmental factors underlying terrestrial arthropod abundance and diversity in alley-cropping and monoculture oil palm plantations","authors":"M. Ashraf, T. Hosaka, Ahmad R Norhisham, R. Sanusi, K. Tohiran, Raja Zulkifli, B. Azhar","doi":"10.3759/tropics.ms22-10","DOIUrl":"https://doi.org/10.3759/tropics.ms22-10","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70010553","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}
The knowledge of xylem maturation manner is importance to foresters and wood processors as it has major implications for end-product quality. This study aims to evaluate the maturation manner of secondary xylem in Eucalyptus camaldulensis for solid wood production. The samples were 45 twelve-year-old trees from 15 families with different radial growth in a progeny test site for the E. camaldulensis second generation in Thailand. Two mixed-effect models (cambial-age dependency and diameter-growth dependency models) were developed for radial variation of wood properties, resulting in that the cambial-age dependency model was a good fitting for all wood properties rather than growth-diameter models, with a few exceptions. Therefore, the secondary xylem of this species matures depending on cambial age rather than diameter growth. Changing ratios of multiple wood properties at 1-year intervals estimated by the cambial-age dependency model became stable after a cambial age of 11.8 years. The wood formed after starting xylem maturation showed 1) longer wood fiber length, 2) smaller number and larger diameter of vessels, 3) larger diameter and thicker wall thickness of wood fiber, and 4) higher density and compressive strength, rather than those formed in the early growth stage. Based on the results, desirable wood properties for solid wood products can be obtained by prolonging the rotation period from the present short rotation periods.
{"title":"Evaluation of xylem maturation manner for solid wood production from <i>Eucalyptus camaldulensis</i> planted in Thailand","authors":"Ikumi Nezu, Futoshi Ishiguri, Haruna Aiso, Sapit Diloksumpun, Jyunichi Ohshima, Shinso Yokota","doi":"10.3759/tropics.ms23-03","DOIUrl":"https://doi.org/10.3759/tropics.ms23-03","url":null,"abstract":"The knowledge of xylem maturation manner is importance to foresters and wood processors as it has major implications for end-product quality. This study aims to evaluate the maturation manner of secondary xylem in Eucalyptus camaldulensis for solid wood production. The samples were 45 twelve-year-old trees from 15 families with different radial growth in a progeny test site for the E. camaldulensis second generation in Thailand. Two mixed-effect models (cambial-age dependency and diameter-growth dependency models) were developed for radial variation of wood properties, resulting in that the cambial-age dependency model was a good fitting for all wood properties rather than growth-diameter models, with a few exceptions. Therefore, the secondary xylem of this species matures depending on cambial age rather than diameter growth. Changing ratios of multiple wood properties at 1-year intervals estimated by the cambial-age dependency model became stable after a cambial age of 11.8 years. The wood formed after starting xylem maturation showed 1) longer wood fiber length, 2) smaller number and larger diameter of vessels, 3) larger diameter and thicker wall thickness of wood fiber, and 4) higher density and compressive strength, rather than those formed in the early growth stage. Based on the results, desirable wood properties for solid wood products can be obtained by prolonging the rotation period from the present short rotation periods.","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135562966","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}
{"title":"Microbial nutrient limitation in tropical forest soils determined using the V-T model contradicts the traditional view that C is the major limiting element","authors":"Taiki Mori","doi":"10.3759/tropics.ms22-03","DOIUrl":"https://doi.org/10.3759/tropics.ms22-03","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45866500","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}
S. Yamashita, H. Salleh, Mohd Effendi bin Wasli, M. Alias, T. Itioka, T. Kenzo, T. Ichie
{"title":"Coarse woody debris provides cobenefits between carbon stock and diversity of polypore fungi in Malaysian forest stands","authors":"S. Yamashita, H. Salleh, Mohd Effendi bin Wasli, M. Alias, T. Itioka, T. Kenzo, T. Ichie","doi":"10.3759/tropics.ms21-18","DOIUrl":"https://doi.org/10.3759/tropics.ms21-18","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47923695","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}
Yukako Monda, Shuzo Kuwahara, Yoritaka Aoki, Haruka Suzuki, Takayuki Kaneko, O. Kozan, Ahmad Muhammad, Ruliyana Susanti, H. Gunawan, M. Kanzaki
{"title":"Productivity of sago palms on smallholder plantations after rewetting in previously drained peatland: a case study on Tebing Tinggi Island, Riau Province, Indonesia","authors":"Yukako Monda, Shuzo Kuwahara, Yoritaka Aoki, Haruka Suzuki, Takayuki Kaneko, O. Kozan, Ahmad Muhammad, Ruliyana Susanti, H. Gunawan, M. Kanzaki","doi":"10.3759/tropics.ms21-15","DOIUrl":"https://doi.org/10.3759/tropics.ms21-15","url":null,"abstract":"","PeriodicalId":51890,"journal":{"name":"Tropics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41736420","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}
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