IF 0.8 4区农林科学

Cerne Pub Date : 2021-07-02 DOI: 10.1590/01047760202127012618

A. Usta, Murat Yılmaz

{"title":"Effects of land use and topographic variables on distribution of pine mistletoe (Viscum álbum subsp. austriacum (Wiesb.) Vollm.) in northeastern Turkey","authors":"A. Usta, Murat Yılmaz","doi":"10.1590/01047760202127012618","DOIUrl":"https://doi.org/10.1590/01047760202127012618","url":null,"abstract":"ABSTRACT Background: This study evaluated the distribution of pine mistletoe in Scots pine ecosystems in relation to topographic variables and land uses. A total of 109 sample plots were selected from pure Scots pine forests in the Eastern Black Sea Region of Turkey. The 6-class dwarf mistletoe rating was used for infection severity. Pearson correlation analysis results showed signiﬁcant relationships between mistletoe infection severity and topographic variables in 30 m buffer and land use in 500 m buffer. Results: Of the sample plots, 69 (63%) were mistletoe infected, and 40 (37%) were uninfected. The t-test results showed that there was a signiﬁcant difference between mean topographic variables and land use in mistletoe infected and uninfected sample plots. The results of the binary logistic regression analysis showed that altitude, productive forest, slope, and road distance were the most signiﬁcant predictors of the distribution of pine mistletoe as topographic variables and land uses. Conclusion: The common direction of mistletoe infected areas, in addition to Scots pine ecosystems, was low altitudes, sheltered valleys, more humid areas and different land use (agriculture, road and stream).","PeriodicalId":50705,"journal":{"name":"Cerne","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49658043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Genetic control of productivity and genotypes by environments interaction for Eucalyptus dorrigoensis in southern Brazil 巴西南部多里戈桉生产力和基因型的环境相互作用遗传控制

IF 0.8 4区农林科学

Cerne Pub Date : 2021-06-11 DOI: 10.1590/01047760202127012594

L. Munhoz, O. D. Santos, B. M. D. R. Valente, E. Tambarussi

{"title":"Genetic control of productivity and genotypes by environments interaction for Eucalyptus dorrigoensis in southern Brazil","authors":"L. Munhoz, O. D. Santos, B. M. D. R. Valente, E. Tambarussi","doi":"10.1590/01047760202127012594","DOIUrl":"https://doi.org/10.1590/01047760202127012594","url":null,"abstract":"ABSTRACT Background: Eucalyptus dorrigoensis withstands cold weather and the occurrence of frost, making it a potential species for improvement programs in Southern Brazil where such conditions occur. However, the use of the species is still uncommon and its genetic variability remains poorly understood.d. Results: For site called Sertao Santana, the narrow sense heritability ranged from 0.46 (H) to 0.64 (MAI) and for Lavras do Sul it ranged from 0.38 (H) to 0.47 (MAI). The coefficient of genetic variation varied from 8.1% (H) to 26.1% (MAI). There is significant genetic correlation between DBH and MAI, reaching a value of 0.97. The GxE interaction was significant and mostly complex (78.7%). The best genetic materials for each environment, along with the most stable genetic materials, were identified. In addition, a thinning simulation was performed and the genetic gains for Sertao Santana and Lavras do Sul were 12.62 and 7.43%, respectively. Conclusion: The studied populations have genetic variability that can be used in breeding programs by selecting among progenies and individuals within progenies. The GxE interaction is complex, and as such, the best genetic material should be selected independently for each site. The results of this study have practical implications for the companies and offer advances in knowledge of the species for breeding programs.","PeriodicalId":50705,"journal":{"name":"Cerne","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45023925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution and importance of some endemic Astragalus L. species in semi-arid environmentally sensitive areas: a case study from northern Turkey 半干旱环境敏感地区一些地方性黄芪属植物的分布及其重要性——以土耳其北部为例

IF 0.8 4区农林科学

Cerne Pub Date : 2021-05-18 DOI: 10.1590/01047760202127012559

E. Gül, M. Dölarslan

{"title":"Distribution and importance of some endemic Astragalus L. species in semi-arid environmentally sensitive areas: a case study from northern Turkey","authors":"E. Gül, M. Dölarslan","doi":"10.1590/01047760202127012559","DOIUrl":"https://doi.org/10.1590/01047760202127012559","url":null,"abstract":"ABSTRACT Background: The objective of this study was to determine the distribution of some endemic species of the genus Astragalus L. (Astragalus anthylloides Lam., Astragalus lycius Boiss. and Astragalus xylobasis var. angustus (Freyn & Sint.) Freyn & Bornm.) species, and the interaction between soil, climatic characteristics and desertification risk which affect the distribution of these species in the semi-arid environment of Cankiri, northwest Turkey. During the vegetation period in 2017, soil and plant samples were collected from 180 points. Desertification risk (DR) and environmentally sensitive area index (ESAI) were calculated for each sampling point using the desertification indicator system for Mediterranean Europe (DIS4ME). Results: According to the DIS4ME system in the forest areas, DR values for A. anthylloides and A. lycius were lowest with 0.49 (no desertification risk) and highest with 3.73 (moderate desertification risk), and with an average of 2.20 in the field (low desertification risk). For A. xylobasis var. angustus in grassland, the DR values ranged from a low of 5.01 to a high of 5.42. The ESAI values ranged from 1.34 to 1.50 in the forest areas where the species A. anthylloides and A. lycius were distributed, and they ranged between 1.33 and 1.47 for A. xylobasis var. angustus in the grassland areas. The results of the analysis between the DR values and Astragalus L. species changes according to the land use types and plant distribution. Conclusion: When the relationships between all three of these endemic species’ DR values are evaluated together, they emerged as the best plant species indicator for determining desertification status.","PeriodicalId":50705,"journal":{"name":"Cerne","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45375197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Structural health assessment of a historical building by using in situ stress wave NDT: a case study in Iran 应用原位应力波无损检测对一座历史建筑进行结构健康评估——以伊朗为例

IF 0.8 4区农林科学

Cerne Pub Date : 2021-05-13 DOI: 10.1590/01047760202127012535

M. Madhoushi, S. Ebrahimi, A. Omidvar

{"title":"Structural health assessment of a historical building by using in situ stress wave NDT: a case study in Iran","authors":"M. Madhoushi, S. Ebrahimi, A. Omidvar","doi":"10.1590/01047760202127012535","DOIUrl":"https://doi.org/10.1590/01047760202127012535","url":null,"abstract":"ABSTRACT Background: Many historical buildings in Iran need to be protected. In many of these buildings, wood is used as a structural element in features such as beam, pile, roof and floor systems. For this purpose, the architectural features of a historical building located in Gorgan (Northern part of Iran) and characterisation of faults, in addition to identification of wood species were conducted. Stress wave non-destructive testing (NDT) was used and wave speed (WS) was measured in tested members to evaluate the decay situation of major wooden beams of building frames and roof truss. After obtaining data related to WS, time of wave transition (TWT) was calculated and compared with control time. Structural elements were characterized in comparison with control time and classified according to decay severity. Results: The results showed that local hardwood species were used for construction of this building. Furthermore, in some parts of the building, there were severely defected structures, thus highlighting the importance of safety. Moreover, WS strongly depended on the types of faults. Conclusion: Due to high relative humidity of climate, wood structures are exposed to faults in the northern region of Iran. However, their general appearance is adequate and acceptable. For better decision making, the TWT should be accompanied by more investigation into the types of defects.","PeriodicalId":50705,"journal":{"name":"Cerne","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45275396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pull-out strength of glued-in GFRP rods in timber connections by using of epoxy resin reinforced by nanoparticles 环氧树脂纳米颗粒增强GFRP粘接杆在木材连接中的拉拔强度

IF 0.8 4区农林科学

Cerne Pub Date : 2021-03-18 DOI: 10.1590/01047760202127012508

M. Madhoushi

{"title":"Pull-out strength of glued-in GFRP rods in timber connections by using of epoxy resin reinforced by nanoparticles","authors":"M. Madhoushi","doi":"10.1590/01047760202127012508","DOIUrl":"https://doi.org/10.1590/01047760202127012508","url":null,"abstract":"ABSTRACT Background: In timber structures, connections are the most important and critical section which supply the strength of each structural element. The aim of this study was evaluation the behavior of epoxy resin reinforced by nanoclay (at three levels) on the pull-out strength of glued-in GFRP rods in glulam. For this purpose, two rods with three lengths (50, 150 and 250 mm) and diameters (6.4, 12.7 and 19.1 mm) were inserted at two opposite sides of glulam blocks (with dimension of 8.89 x 8.89 x 29.94 cm) which were glued by epoxy resin. Samples underwent tensile testing and their tensile strength and shear strength were measured. The obtained data were analyzed statistically and the effects of studied factors on bond strength were evaluated. Results: The results showed that the strength of bonding increased with the addition of a low amount of nanoclay, and the length of the rod had a greater effect than its diameter. Furthermore, the amount of nanoclay, rod length and diameter could not significantly affect simultaneously, the performance and strength of glued-in GFRP rods. Conclusion: Nanoclay particle can be considered as a reinforcement for epoxy resin in glued-in GFRP rods and its effect may cause a considerable increase in the mechanical strengths of joints.","PeriodicalId":50705,"journal":{"name":"Cerne","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45199096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonally dry tropical forest temporal patterns are marked by floristic stability and structural changes 季节性干旱的热带森林时间模式以区系稳定性和结构变化为标志

IF 0.8 4区农林科学

Cerne Pub Date : 2021-02-03 DOI: 10.1590/01047760202127012355

C. Souza, A. B. M. Santos, V. A. Maia, Gabriela Gomes Pires Paula, N. C. A. Fagundes, P. A. Coelho, P. F. Santos, J. Morel, P. O. Garcia, R. M. Santos

{"title":"Seasonally dry tropical forest temporal patterns are marked by floristic stability and structural changes","authors":"C. Souza, A. B. M. Santos, V. A. Maia, Gabriela Gomes Pires Paula, N. C. A. Fagundes, P. A. Coelho, P. F. Santos, J. Morel, P. O. Garcia, R. M. Santos","doi":"10.1590/01047760202127012355","DOIUrl":"https://doi.org/10.1590/01047760202127012355","url":null,"abstract":"Background: Seasonally Dry Tropical Forests (SDTF) are recognized by their great biological diversity, but little is known about their temporal patterns, which may be crucial in a changing world. Here we aimed to characterize the SDTF dynamic patterns in floristic and structural changes, and also to evaluate shifts in dynamic rates and structural attributes such as richness, number of trees and biomass. Our hypothesis is that SDTF tree communities have their dynamic characterized by temporal fluctuations related to an instability pattern, in according to the already found for others tropical forests. For this we used a data of 42 400 m2 plots in three fragments in the Brazilian Arboreal Caatinga, measured in 2005, 2010 and 2015. We evaluated temporal changes in richness, species composition, trees density, biomass and rates of tree mortality and recruitment; and also rates of biomass gain and loss. Results: We found a pattern of floristic composition stability, but with changes in structure and dynamics. There was a tree density decrease driven by constant mortality and by recruitment decrease, and biomass increase due to decrease in biomass loss and to increase in biomass gain. The biomass increase was main related to a small set of dominant species that are the most representative in the","PeriodicalId":50705,"journal":{"name":"Cerne","volume":"27 1","pages":"102355"},"PeriodicalIF":0.8,"publicationDate":"2021-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47976634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Blended paper: physical, optical, structural, and interfiber bonding analysis 混纺纸:物理、光学、结构和纤维间粘合分析

IF 0.8 4区农林科学

Cerne Pub Date : 2021-01-01 DOI: 10.1590/01047760202127012944

M. F. F. Pego, M. L. Bianchi

引用次数: 0

Factors affecting some properties on surface of thermowood material applied with water-based varnishes modifed with nanoparticles 纳米颗粒改性水性清漆对热木材料表面性能的影响因素

IF 0.8 4区农林科学

Cerne Pub Date : 2021-01-01 DOI: 10.1590/01047760202127012886

M. Karamanoğlu, H. I. Kesik

引用次数: 0

Study on Forest Fire spread Model of Multi-dimensional Cellular Automata based on Rothermel Speed Formula 基于Rothermel速度公式的多维元胞自动机森林火灾蔓延模型研究

IF 0.8 4区农林科学

Cerne Pub Date : 2021-01-01 DOI: 10.1590/01047760202127012932

Shiyu Zhang, Jiuqing Liu, Hewei Gao, Xiandong Chen, Xingdong Li, Jun Hua

引用次数: 2

Cellulose nanostructured films from pretreated açaí mesocarp fibers: physical, barrier, and tensile performance 纤维素纳米结构薄膜从预处理açaí中果皮纤维:物理，屏障，和拉伸性能

IF 0.8 4区农林科学

Cerne Pub Date : 2021-01-01 DOI: 10.1590/01047760202127012783

Dayse Gonzaga Braga, Juliana Livian Lima de Abreu, M. G. Silva, T. M. Souza, Matheus Cordazzo Dias, G. Tonoli, C. F. O. Oliveira Neto, P. Claro, L. Gomes, L. Bufalino

引用次数: 5

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