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Thermal and photoperiodic requirements of the seedling stage of three tropical forest species

Journal of Forestry Research 2023年第1期34卷 209-220页

作者： Fabrina Bolzan Martins Mábele de Cássia Ferreira flávia fernanda azevedo fagundes Gabriel Wilson Lorena florêncio Natural Resource Institute Federal University of ItajubáItajubáMinas Gerais 37500-903Brazil

Air temperature and photoperiod play an important role in the seedling development for tropical forest *** variables are sensitive to climate,and so evaluating thermal and photoperiodic effects on seedling development is fundamental,especially for climate change *** to quantify thermal time and the energy required for plants to reach a development stage include air temperature and cardinal *** photoperiod will also affect physiological reactions of a plant and thus its *** we evaluated the six thermal time methods widely used to compute thermal requirement,and identified the influence of the photoperiod from the 2015 and2016 growing seasons and 12 sowing dates in Itajubá,Minas Gerais state,Brazil,on seedling development of three native tropical forest species Psidium guajava L.(Myrtaceae),Citharexylum myrianthum Cham.(Verbenaceae),and Bixa orellana L.(Bixaceae).The method used to quantify thermal time influenced the analytical results of seedling development;the one that considered three cardinal temperatures and compared them with the mean air temperature(Method5)performed better in computing thermal *** influence of photoperiod on seedling development was inconclusive for the three species,but all three developed better in mild temperatures(between 13.3℃and 26.9℃)with a photoperiod shorter than 13 h.

关键词： Phyllochron Thermal time Day length Seedling stage Phenology

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Feasibility of performing the 3-minute step test with remote supervision in children and adolescents with cystic fibrosis: A comparative study

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Pediatric Investigation 2024年第2期8卷 83-90页

作者： fernanda Maria Vendrusculo Gisele Apolinario da Costa Maria Amelia Bagatini Brenda Maria Henrique Maia Lemes Carolina Aguiar Faria Larissa Carvalhaes de Oliveira Evanirso da Silva Aquino Marcio Vinicius fagundes Donadio Laboratory of Pediatric Physical Activity Infant CenterPontificia Universidade Catolica do Rio Grande do Sul(PUCRS)Porto AlegreBrazil Hospital Infantil Joao Paulo II-Fundacao Hospitalar do Estado de Minas Gerais(FHEMIG) Belo HorizonteBrazil Departament of Physiotherapy Pontificia Universidade Catolica de Minas Gerais(PUCMG)-Campus BetimBetimBrazil Department of Physiotherapy Faculty of Medicine and Health SciencesUniversitat Internacional de Catalunya(UIC)BarcelonaSpain

Importance:The 3-min step test is a simple option to monitor submaximal exercise capacity,although its use via remote video monitoring has not been investigated in children with cystic fibrosis(CF).Objective:This study aimed to assess the feasibility and reproducibility of performing the 3-min step test with remote ***:A cross-sectional study including CF patients(6-18 years)from two CF services were ***,anthropometric,clinical,and lung function data were collected and two 3-min step tests were performed:(i)in-person supervision,and(ii)remotely supervised by video *** and after the tests,heart rate(HR),oxygen saturation(SpO2),and the Borg score for dyspnea and lower limb fatigue were ***:Twenty-three patients(10.7±3.7 years)with a mean FEV1 of 89.5%±23.2%were *** were no significant differences between tests,with mean differences(95%confidence intervals)in final HR of-3.3(-8.9,2.4),change in HR of-1.9(-6.1,2.1),final SpO2 of 0.3(-0.4,1.0),and final dyspnea of 0.1(-0.8,0.9).The intraclass correlation coefficient was 0.852(final HR),0.762(final SpO2),and 0.775(final lower limb fatigue).Significant and moderate correlations were found between tests for final HR(r=0.75),change in HR(r=0.61),and final SpO2(r=0.61).The Bland-Altman analysis showed a mean difference in final SpO2 between tests of 0.3%(limit of agreement-3.0%,3.5%).Interpretation:Physiological responses between tests were similar,indicating it was feasible to perform the 3-min step test with remote supervision in CF children.

关键词： Children Cystic fibrosis Exercise test Telehealth

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空间、环境和历史因素对热带森林树种周转的影响

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Journal of Plant Ecology 2021年第4期14卷 717-729页

作者： Alisson Borges Miranda Santos Vinicius Andrade Maia Cleber Rodrigo de Souza Nathalle Cristine Alencar fagundes fernanda Moreira Gianasi Aurelio de Jesus Rodrigues Pais Natalia de Aguiar-Campos Gabriela Gomes Pires Diego Teixeira Girardelli Jean Daniel Morel Mariana Caroline Moreira Morelli Felipe de Carvalho Araujo Rubens Manoel dos Santos Department of Forestry Sciences Federal University of LavrasUniversity CampusLavrasBrazil Biological Sciences University of the State of Minas GeraisItuiutaba UnitItuiutabaBrazil Department of Biology Federal University of LavrasUniversity CampusLavrasBrazil Faculty of Environmental Engineering and Natural Resources Zambeze UniversityChimoioMozambique

本文通过回答以下问题来分析空间距离、当前和过去的环境差异及这几个因素对树木群落分类和系统发育转换的影响:(i)树木群落分类和系统发育转换是否与空间距离通过环境差异产生的间接影响相关?(ii)树木群落分类和系统发育转换是否随古气... 详细信息

本文通过回答以下问题来分析空间距离、当前和过去的环境差异及这几个因素对树木群落分类和系统发育转换的影响:(i)树木群落分类和系统发育转换是否与空间距离通过环境差异产生的间接影响相关?(ii)树木群落分类和系统发育转换是否随古气候(末次盛冰期和中全新世)的变化而变化?本文对巴西的14个大西洋雨林样点(采样面积20.4 ha)83个科615个种进行了研究,获得了当前、中全新世和末次盛冰期的地块地理坐标、土壤变量和样点生物气候变量。我们使用基于距离的结构方程模型(SEM)来(i)检测空间距离和环境差异的直接影响,以及(ii)检测空间距离通过环境差异对分类(Bray-Curtis距离)和系统发育转换(Comdist和Comdistnt距离)的间接影响。研究结果表明,空间距离通过环境差异对分类和系统发育转换的间接影响较弱。基于生态位中性的历史过程带来的直接影响驱动了树木群落的转换。因此,我们推断古气候(历史过程)促进了产生当前植物区系分支的选择,而空间距离(中性的过程)限制了物种从区域种库向外扩散的范围,环境条件(基于生态位的过程)则在本地选择能够持续生存的分类群。

关键词：聚类过程系统发育群落环境过滤中性群落系统发育转换生态位古气候效应

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