Scientia Forestalis最新文献_第7页

Soil physical-chemical aspects influence the fine roots parameters of Pinus elliottii Engelm. stands in southern Brazil 土壤理化因素对湿地松细根参数的影响。位于巴西南部

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.17

M. S. Kulmann, G. Dick, Humberto de Jesus Eufrade-Junior, S. Guerra, Mauro Valdir Schumacher

{"title":"Soil physical-chemical aspects influence the fine roots parameters of Pinus elliottii Engelm. stands in southern Brazil","authors":"M. S. Kulmann, G. Dick, Humberto de Jesus Eufrade-Junior, S. Guerra, Mauro Valdir Schumacher","doi":"10.18671/scifor.v50.17","DOIUrl":"https://doi.org/10.18671/scifor.v50.17","url":null,"abstract":"of the the parameters of Engelm. stand in Abstract Planted forests make use of strategies to increase the efficiency in the use of available soil resources, such as the production of fine roots to absorb nutrients and water which are factors limiting tree growth. Thus, the assessment of fine roots production in forest stand is crucial to understand the tree nutrient dynamic. This study aims to evaluate the interaction between physical-chemical attributes of a Rhodic Paleudult soil and the distribution of the fine roots of a Pinus elliottii plantation grown in southern Brazil. Biomass and density of fine roots, calcium (Ca), magnesium (Mg), soil organic matter (SOM), pH, base saturation and cations exchange capacity, clay, and soil density, at soil depths of 0-5, 5-10, 10-15 and 15-20 cm, were evaluated. The total production of fine roots biomass in the 0-20 cm layer produced was 824.9 kg ha -1 , with greater accumulation in the 0-10 cm layer, where 57.4% of the total fine roots were concentrated. The fine roots density varied from 0.38 to 0.53 g dm -3 , decreasing in subsurface layers of 10-20 cm. The biomass and density of fine roots of P. elliottii were influenced by the higher concentrations of Ca, Mg, SOM, pH, base saturation, and cations exchange capacity, which can contribute to greater absorption of nutrients and, consequently, increase in productivity of a plantation.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"11 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90815590","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

Eucalyptus species extracts inhibiting in vitro growth of the phytobacterium Xanthomonas campestris pv. campestris 桉树提取物对油菜黄单胞菌体外生长的抑制作用。定

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.13

Moisés Rodrigues Silva, Keren Hapuque Mendes de Castro, Amanda Magda Almeida Santos, M. G. Cunha, E. Marques

{"title":"Eucalyptus species extracts inhibiting in vitro growth of the phytobacterium Xanthomonas campestris pv. campestris","authors":"Moisés Rodrigues Silva, Keren Hapuque Mendes de Castro, Amanda Magda Almeida Santos, M. G. Cunha, E. Marques","doi":"10.18671/scifor.v50.13","DOIUrl":"https://doi.org/10.18671/scifor.v50.13","url":null,"abstract":"inhibiting vitro of Abstract This study was carried out to evaluate the antibacterial potential of Eucalyptus spp. against two strains of the plant pathogenic bacterium Xanthomonas campestris pv. campestris ( Xcc ). The treatments consisted of aqueous and hydroethanolic extracts, at concentrations of 50% (experiment 1) and 35% and 15% (experiment 2), which were studied by the double layer inhibition test. The evaluated species were E. camaldulensis, E. cloeziana, E. grandis, E. “urograndis” and E. urophylla . Based on the results of experiment 1, it was observed that most of the extracts that inhibited the growth of the bacterial strains tested were hydroethanolic, except for the aqueous extract of the E. “urograndis” hybrid. Regarding experiment 2, it was observed that the greatest inhibition was with the concentrated extracts (35%), but the difference for the antibacterial effect was not significant in this case. Comparing the experiments, it was observed that in general the concentrated extracts (50%) had greater inhibition than the diluted ones. These results represent the potential of aromatic plants in the ecological management of Xcc , with emphasis on the aqueous and hydroethanolic extracts of E. cloeziana . Subsequently, bioassays will be performed to verify the effectiveness of such extracts in vivo .","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"29 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76183542","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

Eficiência nutricional de porta-enxertos de seringueira 橡胶树砧木的营养效率

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.12

Noemi Cristina de Souza Vieira, Enes Furlani Junior, Raiana Crepaldi de Faria Nocchi, A. P. Paixão, M. Pereira, Erivaldo José Scaloppi Junior, Dayane Bortoloto Silva

引用次数: 0

Reproductive phenology and floral visitors in Rhododendron arboreum (Ericaceae) in a temperate forest of Garhwal Himalaya 喜马拉雅加瓦尔温带森林杜鹃花的繁殖物候和访花现象

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.11

Vaisakhy Prem Chand, Arun Sukumaran, V. P. Khanduri

引用次数: 1

Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemão) Ducke seedling 种子质量调节木耳鸭苗对水分亏缺的耐受性

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.15

Maria de Fátima de Queiroz Lopes, L. K. S. Lima, J. Ferreira, T. I. Silva, R. Bruno

{"title":"Seed mass modulates tolerance to water deficit in Luetzelburgia auriculata (Allemão) Ducke seedling","authors":"Maria de Fátima de Queiroz Lopes, L. K. S. Lima, J. Ferreira, T. I. Silva, R. Bruno","doi":"10.18671/scifor.v50.15","DOIUrl":"https://doi.org/10.18671/scifor.v50.15","url":null,"abstract":"In semi-arid regions, water deficit occurs for long periods, but the adaptation mechanisms developed by endemic species are little known. The objective of this study was to determine the tolerance of Luetzelburguia auriculata (Allemão) Ducke seedlings to water stress regarding germination and seedling establishment related to seeds’ mass. The experiment was conducted in a completely randomized design in a 2 x 5 factorial scheme, with two classes of seeds (ligh t < 0.35 g and heavy ≥ 0.35 g) and five osmotic potential levels (-0.2; -0.4; -0.6; -0.8 and -1.0 MPa), distributed in four replications of 25 seeds per plot. The following parameters were evaluated: germination rate (GR), first germination count (FGC), germination speed index (GSI), mean germination time (MGT), root length (RL), fresh and cotyledon dry mass (CFM/CDM) and fresh and dry root mass (RFM/RDM). As the osmotic potential became more negative, there was a reduction in physiological variables. The h eavy seeds (≥ 0.35 g) showed increases when compared to light seeds (<0.35 g), of 15.73, 22.94, 15.02, 23.33, 31.43, 21.43% for the variables GR, FGC, RL, CFM, CDM and RFM, respectively. Therefore, heavy seeds are more tolerant to water stress and should be prioritized for the recovery of degraded areas, especially in places with low rainfall.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"12 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85507628","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

Estrutura da vegetação como indicador de distúrbio e resiliência em unidade de conservação na Mata Atlântica 大西洋森林保护区植被结构作为扰动和恢复力指标

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.14

Vanessa Pulcheria Pinheiro Costa, Alan Cauê de Holanda, M. D. P. Costa, Ana Luiza da Silva Lopes-Nunes

引用次数: 0

Propriedades da madeira como potenciais biomarcadores de tolerância a distúrbios fisiológicos: comparação de genótipos de eucalipto divergentes 木材特性作为抗生理障碍的潜在生物标志物:不同桉树基因型的比较

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.22

M. Almeida, E. Picoli, Jordão Cabral Moulin, Lúcio M. S. Guimarães, Edval Angelo Valverde Zauza, Rodolfo Araújo Loos, Kevin Brown Hall, Danielly Silveira Gomes, Gustavo Ribeiro Da Conceição, Paola Delatorre Rodrigues, G. B. Vidaurre

{"title":"Propriedades da madeira como potenciais biomarcadores de tolerância a distúrbios fisiológicos: comparação de genótipos de eucalipto divergentes","authors":"M. Almeida, E. Picoli, Jordão Cabral Moulin, Lúcio M. S. Guimarães, Edval Angelo Valverde Zauza, Rodolfo Araújo Loos, Kevin Brown Hall, Danielly Silveira Gomes, Gustavo Ribeiro Da Conceição, Paola Delatorre Rodrigues, G. B. Vidaurre","doi":"10.18671/scifor.v50.22","DOIUrl":"https://doi.org/10.18671/scifor.v50.22","url":null,"abstract":"Eucalypt Physiological disorder (PD) is characterized by symptoms such as bark cracking, loss of apical dominance, adventitious shoot emission, leaf abscission, among others. The use of wood biomarkers easily measurable can contribute as a criterion for the selection of tolerant clones. The objective of this study was to evaluate the wood and bark properties of commercial Eucalyptus clones tolerant and susceptible to the PD and to identify profiles of wood and bark responses related to the disorder. Three trees per clone were sampled at 3 positions along the trunk: DBH (diameter at breast height), 50 and 75%. The wood properties evaluated were wood and bark density, heartwood, sapwood and bark percentages, and wood chemical composition (extractives, lignin, syringyl/guaiacil, holocellulose, and ash). Although there were different values of bark density between the clones and their PD susceptibility classification, the averages were statistically similar. Despite the difference of wood density and extractive content, there were no trends in relation to clone susceptibility or phenotype tolerance. In general, tolerant clones showed higher growth, aboveground biomass, heartwood percentage and syringyl/guaiacil ratio, and lower bark content. These characteristics are indicated as potential biomarkers related to physiological disorder tolerance.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"24 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87082565","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

Influence of fire on edge vegetation in an Atlantic Forest remnant in Brazil 火灾对巴西大西洋森林遗迹边缘植被的影响

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-07-07 DOI: 10.18671/scifor.v50.19

Felipe Zuñe-da-Silva, P. Rodrigues, C. Rojas-Idrogo, G. E. Delgado-Paredes, A. Enrich-Prast, C. M. Sakuragui

{"title":"Influence of fire on edge vegetation in an Atlantic Forest remnant in Brazil","authors":"Felipe Zuñe-da-Silva, P. Rodrigues, C. Rojas-Idrogo, G. E. Delgado-Paredes, A. Enrich-Prast, C. M. Sakuragui","doi":"10.18671/scifor.v50.19","DOIUrl":"https://doi.org/10.18671/scifor.v50.19","url":null,"abstract":"Fires and habitat fragmentation are responsible for devastating large ecosystems around the biosphere. The increasing use of remote sensing allows fire patterns to be identified and plays an essential role in preventing fires. In this context, this study aimed to describe the variation in evidence of fire between the edge and the interior of an Atlantic Forest remnant in southeastern Brazil and infer its effects on vegetation. Fire records were acquired between 2010 and 2020 from the Instituto Nacional de Pesquisas Espaciais database and United States Geological Survey satellite images. For each scene, the images were processed and the normalized difference vegetation index (NDVI) was calculated. To assess the variation, records were classified and compared according to the year, month, hours, and habitat type (edge and interior). To verify the influence of fires on vegetation, simple linear regressions were performed based on the fire risk due to the NDVI-year-habitat interaction. The data included 748 fire records, with the highest occurrences from April to August, and 51% of the fires occurred between 15h and 20h, indicating periods with more intense solar radiation. The relationship between fire risk and NDVI-year-habitat was significant (F = 30.35; R 2 = 0.26; p < 0.0001), and the edges were more vulnerable to fire risk. This study shows that in an Atlantic Forest remnant, areas with lower vegetation indices, such as edges, are more vulnerable to fire than areas with dense forest vegetation. queimadas ocorreram entre 15h e 20h, indicando períodos de radiação solar mais intensa. A relação entre risco de fogo e NDVI-ano-habitat foi significativa (F = 30,35; R2 = 0,26; p < 0,0001), e as bordas, como esperado, foram mais vulneráveis ao risco de fogo. Este estudo mostra que em um remanescente de Mata Atlântica, áreas com índices de vegetação mais baixos, como bordas, são mais vulneráveis ao fogo do que áreas com vegetação florestal densa.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"43 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81194316","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

Genetic diversity of Caryocar brasiliense Cambess. (Caryocaraceae: Malpighiales) among genotypes producing fruits with and without thorns in the endocarp 巴西核桃树外形的遗传多样性。内果皮有刺和无刺的基因型中的一种

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-04-11 DOI: 10.18671/scifor.v50.08

Bruno H. Gomes, Mariana G. Mendes, M. V. Faria, A. Bonetti, A. Nogueira

引用次数: 0

Índices de vegetação para análise nutricional de Eucalyptus saligna Smith usando espectrorradiometria 利用光谱辐射法对桉树营养分析的植被指数进行分析

IF 0.5 4区农林科学

Scientia Forestalis Pub Date : 2022-03-09 DOI: 10.18671/scifor.v50.06

Letícia Daiane Pedrali, Juliana Marchesan, Túlio Barroso Queiroz, Elisiane Alba, Rudiney Soares Pereira, Mauro Valdir Schumacher

{"title":"Índices de vegetação para análise nutricional de Eucalyptus saligna Smith usando espectrorradiometria","authors":"Letícia Daiane Pedrali, Juliana Marchesan, Túlio Barroso Queiroz, Elisiane Alba, Rudiney Soares Pereira, Mauro Valdir Schumacher","doi":"10.18671/scifor.v50.06","DOIUrl":"https://doi.org/10.18671/scifor.v50.06","url":null,"abstract":"This study aimed to explain the association between macroand micro-nutrients with vegetation indices and to determine the most important wavelengths for each nutrient. In addition, equations capable of describing the nutritional status of Eucalyptus saligna Smith stands based on spectral radiometric data were suggested. The research was carried out in an 18-month-old plantation located in Barra do Ribeiro, Rio Grande do Sul State, Brazil. For the reflectance measurement 12 samples were used, which also served for the chemical quantification of macro and micronutrients. Nutrients were estimated by using multiple linear regression. The results showed that the visible and red-edge regions are more sensitive for discriminating nutrients in plants, mainly Mn, P, Ca, and S. In the macronutrient modeling, the estimation of N, Ca, and S, yielded the best adjustments, while in the micronutrient group the best adjustments were yielded by Zn, Cu, and Mn. Thus, the present study demonstrated the effectiveness of spectral radiometry to analyze nutrients in vegetation, which can be used in a fast and practical way to diagnose the nutritional status of eucalyptus.","PeriodicalId":54443,"journal":{"name":"Scientia Forestalis","volume":"6 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89417211","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