scholarly journals Mimosa scabrella Benth. planted for forest restoration in southern Brazil

2021 ◽  
Vol 10 (3) ◽  
pp. e33710312629
Author(s):  
Dionatan Gerber ◽  
Larissa Regina Topanotti ◽  
Oiliam Carlos Stolarski ◽  
Bruna Elisa Trentin ◽  
Marcos Felipe Nicoletti ◽  
...  
Keyword(s):  
Forest Restoration ◽  
Linear Models ◽  
Survival Rates ◽  
Information Criteria ◽  
Projection Area ◽  
High Survival ◽  
Total Height ◽  
Crown Volume ◽  
Collar Diameter ◽  
Crown Projection Area

Tropical trees planting resurgent in a global warming scenario, and this activity relies on information about forest species ecology and its different functional traits. we evaluated the initial performance of Mimosa scabrella using the Generalized Linear Models (GLM) technique to fit mathematical models for collar diameter growth x height, and for crown projection area x collar diameter in a forest restoration planting. The following variables were obtained in the first four years after planting: collar diameter (mm), total height (m), crown projection area (m²) and crown volume (m³). The models fitting was performed by GLM on Gamma, Normal and Poisson distribution, identity and logarithmical join function, and they were analyzed based on Akaike and Bayesian Information Criteria, standard deviation of the estimate and determination coefficient. M. scabrella showed an excelled performance on the 48 months of age, with average increment of 200.28 mm in collar diameter, 6.88 m in total height, 2.95 m² in crown projection area and 83.41 m³ in crown volume. Its growth reduced only on periods of frost occurrence, but it restarted after these climatic events.  The species growth, as well as its high survival rates and resprouting, allow its recommendation as a shady species of fast canopy fulfillment in forest restoration projects.

TRIPLOID APPLE VARIETIES OF SUMMER RIPENING SELECTION VNIISPK ON CLONAL ROOTSTOCK 54-118

1970 ◽  
pp. 34-36
Author(s):  
А. M. Galasheva ◽  
Е. N. Sedov
Keyword(s):  
Tree Height ◽  
Projection Area ◽  
Cross Sectional ◽  
Crown Width ◽  
Crown Volume ◽  
The World ◽  
Apple Cultivars ◽  
Crown Projection Area ◽  
Academy Of Sciences ◽  
First Time

For the first time in the world and in Russia, Academician of the Russian Academy of Sciences, breeder Evgeny Nikolaevich Sedov created a series of triploid apple cultivars from intervalent crosses 2х × 4х. Triploid apple cultivars bear fruit more regularly, have higher self-fruitfulness and have fruits of high marketability. The article presents data on the study of triploid apple cultivars of the summer ripening period of the VNIISPK breeding - Augusta, Daryona, Maslovskoye, Osipovskoye, Zhilinskoye, Spasskoye and Yablochny Spas as well as the control Canadian cultivar Melba on a semi-dwarf clone rootstock 54-118. Maslovskoye, Zhilinskoye, Spasskoye and Yablochny Spas have immunity to scab. The orchard was planted in 2014, the garden planting scheme was 5 x 2 m. The indicators of the growth force (tree height, crown width and stem diameter) and the yield of trees were studied. At the age of six, the trees of triploid cultivars reached a height of 2.2 m (Maslovskoye) to 3.0 m (Yablochny Spas) on a semi-dwarf rootstock 54-118. The highest indicators of crown volume (3.3-5.3 m3), crown projection area (4.2-5.3 m2) and the cross-sectional area of the stem (46.5-52.8 cm2) were in Osipovskoye, Yablochny Spas, Zhilinskoye and Spasskoye. The highest yield in an average of three years was given by triploid scab-immune apple cultivars on a semi-dwarf rootstock 54-118: Maslovskoye, Zhilinskoye, Spasskoye and Yablochny Spas.

Crown structure of European beech (Fagus sylvatica L.): a non-causal proxy for mechanical–physical wood properties

2020 ◽  
Author(s):  
Andreas Rais ◽  
Martin Jacobs ◽  
Jan-Willem G. van de Kuilen ◽  
Hans Pretzsch
Keyword(s):  
Fagus Sylvatica ◽  
Laser Scanning ◽  
European Beech ◽  
Wood Properties ◽  
Projection Area ◽  
Mixed Stands ◽  
Crown Volume ◽  
Crown Structure ◽  
Crown Morphology ◽  
Crown Projection Area

The current tendency towards the silvicultural promotion of mixed tree species has increased the variability in the crown structure within stands. This study shows how neighbouring trees can influence both the external crown features and internal wood properties of trees. Using terrestrial laser scanning, the crown features of 100 European beech trees, <i>Fagus sylvatica</i> L., from pure beech stands and mixed stands of beech with Douglas fir, Norway spruce, sessile oak and Scots pine were recorded. After felling and sawing, the dynamic modulus of elasticity was determined on 1623 boards from the two lower 4.1-m logs. Significant differences were found between beech trees from pure stands and those from beech–pine mixed stands in terms of crown volume (415 m<sup>3</sup> vs 766 m<sup>3</sup>), crown ratio (50.0% vs 71.5%), crown projection ratio (0.182 m cm<sup>−1</sup> vs 0.253 m cm<sup>−1</sup>) and branch angle (30.7° vs 54.1°). Multiple regression mixed models revealed significant relationships between timber stiffness and crown volume (-1.7 N mm<sup>−2</sup> m<sup>−3</sup>), crown ratio (-28.4 N mm<sup>−2</sup> %<sup>−1</sup>) and crown projection area (-9835 N mm<sup>−2</sup> m<sup>−1</sup> cm). Thus, the crown morphology of broad-leaved species reflects the tree’s long-term competitive status and suggests indicators for the assessment of mechanical–physical wood properties.

scholarly journals USING BARE-ROOT AND ROOTSTOCK SEEDLINGS FROM NATURAL REGENERATION OF CEDRELA FISSILIS

CERNE ◽  
2016 ◽  
Vol 22 (3) ◽  
pp. 309-316
Author(s):  
Thomas Schroder ◽  
Anna Paula Lora Zimmermann ◽  
Lílian Daniel Pereira ◽  
Noé dos Santos Ananias Hofiço ◽  
Dilson Sousa Rocha Júnior ◽  
...  
Keyword(s):  
Survival Probability ◽  
Natural Regeneration ◽  
Forest Restoration ◽  
Linear Models ◽  
Water Stress Tolerance ◽  
Cheap Alternative ◽  
Collar Diameter ◽  
Survival And Growth ◽  
Bare Root ◽  
One Year

ABSTRACT The success of forest creation relies on seedling availability and quality. The aim of this research is to assess the possible use of rootstock and bare-root seedlings of Cedrela fissilis obtained from natural regeneration for direct field planting. We used Generalized Linear models to assess survival and Hierarchical Models to assess height growth over one year after planting. Initial root-collar diameter (RCD) and treatment (rootstock or bare-root) affected survival and growth. Rootstock and larger seedlings presented higher levels of survival and growth. Higher seedling quality in the rootstock treatment is due to higher water stress tolerance. Rootstock seedlings with more than 1 cm of initial RCD had over 80% of survival probability, while small bare-root seedlings had mean survival probability as low as 20%. Rootstock seedlings grew as much as fourfold more than bare-root. Using natural regeneration of C. fissilis as a source of rootstock seedlings may be a cheap alternative for forest restoration and enrichment planting projects.

scholarly journals INITIAL GROWTH PERFORMANCE OF VALUABLE TIMBER SPECIES IN SOUTHERN BRAZIL: Araucaria Angustifolia, Balfourodendron Riedelianum, AND Parapiptadenia Rígida

2019 ◽  
Vol 43 (4) ◽  
Author(s):  
Larissa Regina Topanotti ◽  
Dionatan Gerber ◽  
Oiliam Carlos Stolarski ◽  
Bruna Elisa Trentin ◽  
Carla Talita Pertille ◽  
...  
Keyword(s):  
Standard Error ◽  
Information Criterion ◽  
Coefficient Of Determination ◽  
Timber Species ◽  
Initial Growth ◽  
Araucaria Angustifolia ◽  
Crown Area ◽  
Total Height ◽  
Crown Volume ◽  
Collar Diameter

ABSTRACT The initial growth of three Brazilian native timber species in the city of Dois Vizinhos-PR, Brazil, was described - Araucaria angustifolia, Balfourodendron riedelianum, and Parapiptadenia rigida, using four non-linear mathematical models (Gompertz, Logistic, Logistic 4P, and Chapman-Richards). In the first 4 years after planting, information about collar diameter (mm), total height (m), crown height (m), and crown diameter (m) was obtained twice a year for 12 individuals per species. Crown area (m²) and crown volume (m³) were estimated. The growth in these four variables (collar diameter, total height, crown area, and crown volume) was projected using the models, and their fitting was assessed based on the values of the Akaike Information Criterion, the Bayesian Information Criterion, the standard error of estimate, and the coefficient of determination. The models generated excellent statistics for all parameters in all variables, with better statistics for collar diameter (coefficient of determination higher than 0.65 and standard error lower than 30%) and total height (coefficients of determination higher than 0.72 and standard error lower than 37%). Considering the three species, Parapiptadenia rigida showed the fastest growth in all variables (median of 70.97 mm for collar diameter, median of 4.475 m for total height, median of 10.35 m² for crown area, and median of 15.30 m³ for crown volume at 48 months). Longer monitoring periods in this and other experiments are recommended to characterize the growth of these three Brazilian native timber species to adequately describe their performance in timber and forest restoration projects.

scholarly journals SURVIVAL AND NATURAL REGENERATION OF FOREST ESSENCES CULTIVATED IN ALTERED AREAS THIRTY-FIVE YEARS AFTER PLANTING

FLORESTA ◽  
2022 ◽  
Vol 52 (1) ◽  
pp. 168
Author(s):  
Harley Araújo da Silva ◽  
Thiago Augusto Da Cunha ◽  
Veronica Telma Da Rocha Passos
Keyword(s):  
Tree Species ◽  
Natural Regeneration ◽  
Forest Restoration ◽  
Mangifera Indica ◽  
Survival Rates ◽  
The State ◽  
High Survival ◽  
Syzygium Cumini ◽  
Forest Species ◽  
Survival Status

The evaluation of the survival and natural regeneration of tree species in a 35-year-old plantation was carried out to identify the species established in the area, aiming at their recommendation in forest restoration plantations in the State of Acre. In the 1980s, 138 forest species were planted in two experimental units (EU), of 1.38 ha each, in the Zoobotanical Park (ZP) of the Federal University of Acre, Rio Branco campus. The main activities carried out in the area, prior to planting, were agriculture and cattle raising.  Survival status was measured through a census of all individuals planted at the time, who were still alive. In addition, all regenerating individuals from planted species were surveyed in the effective planting area of the experimental units. At the time of evaluation, living individuals of 41 and 46 species were found in experimental units 1 (EU-1) and 2 (EU-2), respectively. The species Syagrus sancona, Talisia esculenta, Acacia polyphylla, Couepia bracteosa, Mangifera indica, Syzygium cumini and Copaifera multijuga showed survival rates above 90% in at least one of the experimental units. Only Syagrus sancona and Handroanthus serratifolius presented high survival rates in both experimental. Regenerating individuals of the species Aspidosperma vargasii, Couepia bracteosa, Euterpe precatoria, Handroanthus serratifolius, Oenocarpus mapora, Onychopetalum periquino and Stryphnodendron pulcherrimum were found in the two EU.

scholarly journals Assessment of suitability of apple varieties for intensive technologies in the conditions of the Northern Precaspian

2020 ◽  
pp. 22-23
Author(s):  
Marina Gennadievna Kostenko
Keyword(s):  
Comparative Study ◽  
Cross Section ◽  
Unit Area ◽  
Climatic Conditions ◽  
Projection Area ◽  
Maximum Productivity ◽  
Apple Varieties ◽  
Crown Volume ◽  
Crown Projection Area ◽  
First Time

For the first time in the soil and climatic conditions of the Astrakhan region, a comparative study of biometric indicators, yield, productivity coefficient of 8 apple varieties grafted on a medium-sized stock 54-118 was carried out. It was found that the highest crown parameters were characteristic of the Gala Kub variety (10 m3 crown volume and 7.5 m2 crown projection area), the smallest - the Prikubanskoe, Lambourne and Vainspur varieties (2.3 ... 3.0 m3 and 3.2 ... 3.3 m2, respectively), which ensures denser placement of trees of these varieties in the garden. In terms of productivity, the varieties Pamyat Esaulu, Prikubanskoe, Vainspur, Zolotaya Korona, Renet Kubansky (25.8 ... 32.8 kg / village or 25.8 ... 32.8 t / ha) stood out. The Prikubanskoe variety (9.60 kg / m2, 13.08 kg / m3, 0.62 kg / cm2, respectively) was distinguished by the maximum productivity (kg) per unit of projection area and crown volume, area of the transverse stem. High coefficients of productivity per unit area of the cross-section of the trunk (0.49 ... 0.54 kg / cm2) were found in varieties Vainspur, Pamyat Esaulu and Renet Kubansky.

scholarly journals Characteristics of VNIISPK apple cultivars on semi-dwarf rootstock 54-118

2020 ◽  
pp. 60-64
Author(s):  
A. M. Galasheva ◽  
N. G. Krasova ◽  
Z. E. Ozherelieva
Keyword(s):  
Frost Resistance ◽  
Control Level ◽  
Projection Area ◽  
Cross Sectional ◽  
Crown Volume ◽  
Russian Research Institute ◽  
Apple Cultivars ◽  
Hardened State ◽  
Crown Projection Area ◽  
And Control

Relevance. Due to the wide diversity of cultivars and rootstocks, the selection of more productive, commercial and adapted graft-rootstock combinations for industrial orchards in the Orel region and the entire Central Chernozem region is relevant.Materials and methods. The studies were carried out at the Russian Research Institute of Fruit Crop Breeding (VNIISPK) on the bases of the laboratory of cultivar study and cultivar agrotechnics of pome crops and the laboratory of physiology of fruit plant resistance. Winter apple cultivars of VNIISPK breeding ‘Sinap Orlovsky’, ‘Veteran’, ‘Orlik’, ‘Rozhdestvenskoye’, ‘Svezhest’, ‘Bolotovskoye’, ‘Veniaminovskoye’ and control cultivar ‘Antonovka Obyknovennaya’ on the vegetatively propagated semi-dwarf rootstock 54-118 were taken as objects of the studies. The orchard was planted in autumn 2013, the planting scheme was 6 mx3m.Results. The studied apple cultivars have good compatibility with 54-118 rootstock, provide good tree development and low-sized crown. The highest yield on average for three years was in scab-immune apple cultivars ‘Bolotovskoye’ (4.6 t/ha), ‘Rozhdestvenskoye’ (3.4 t/ha) and ‘Venyaminovskoye’ (3.2 t/ha). The highest indicators for the load of the crop on the crown volume, crown projection area, and cross-sectional area of the stem were for ‘Svezhest’ and ‘Bolotovskoye’. As a result of determining the frost resistance of apple cultivars in mid-January to temperatures up to -38...-40°C, it was revealed that in the hardened state, the cultivars showed frost resistance of buds and tissues of annual shoots with reversible damage at -38°C in the middle of winter. A decrease in temperature to -40°C in January increased damage to buds and wood in the studied varieties, while the bark was characterized by greater frost resistance. According to the degree of damage to the cortex in January, when the temperature dropped to -40°C, ‘Rozhdestvenskoye’, ‘Svezhest’, and ‘Sinap Orlovsky’ were at the control level.

scholarly journals The effect of sociodemographic factors on COVID-19 incidence of 342 cities in China: a geographically weighted regression model analysis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Huihui Zhang ◽  
Yini Liu ◽  
Fangyao Chen ◽  
Baibing Mi ◽  
Lingxia Zeng ◽  
...  
Keyword(s):  
Regression Model ◽  
Poisson Regression ◽  
Linear Models ◽  
Intervention Strategy ◽  
Health Resources ◽  
Sociodemographic Factors ◽  
Information Criteria ◽  
Poisson Regression Model ◽  
Geographically Weighted Regression Model ◽  
Auto Correlation

Abstract Background Since December 2019, the coronavirus disease 2019 (COVID-19) has spread quickly among the population and brought a severe global impact. However, considerable geographical disparities in the distribution of COVID-19 incidence existed among different cities. In this study, we aimed to explore the effect of sociodemographic factors on COVID-19 incidence of 342 cities in China from a geographic perspective. Methods Official surveillance data about the COVID-19 and sociodemographic information in China’s 342 cities were collected. Local geographically weighted Poisson regression (GWPR) model and traditional generalized linear models (GLM) Poisson regression model were compared for optimal analysis. Results Compared to that of the GLM Poisson regression model, a significantly lower corrected Akaike Information Criteria (AICc) was reported in the GWPR model (61953.0 in GLM vs. 43218.9 in GWPR). Spatial auto-correlation of residuals was not found in the GWPR model (global Moran’s I = − 0.005, p = 0.468), inferring the capture of the spatial auto-correlation by the GWPR model. Cities with a higher gross domestic product (GDP), limited health resources, and shorter distance to Wuhan, were at a higher risk for COVID-19. Furthermore, with the exception of some southeastern cities, as population density increased, the incidence of COVID-19 decreased. Conclusions There are potential effects of the sociodemographic factors on the COVID-19 incidence. Moreover, our findings and methodology could guide other countries by helping them understand the local transmission of COVID-19 and developing a tailored country-specific intervention strategy.

scholarly journals Cognitive decline in patients with prostate cancer: study protocol of a prospective cohort, NEON-PC

BMJ Open ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. e043844
Author(s):  
Natalia Araujo ◽  
Samantha Morais ◽  
Ana Rute Costa ◽  
Raquel Braga ◽  
Ana Filipa Carneiro ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Cognitive Decline ◽  
Cognitive Performance ◽  
Androgen Deprivation Therapy ◽  
Survival Rates ◽  
Cardiovascular Complications ◽  
Androgen Deprivation ◽  
High Survival ◽  
The Impact

IntroductionProstate cancer is the most prevalent oncological disease among men in industrialised countries. Despite the high survival rates, treatments are often associated with adverse effects, including metabolic and cardiovascular complications, sexual dysfunction and, to a lesser extent, cognitive decline. This study was primarily designed to evaluate the trajectories of cognitive performance in patients with prostate cancer, and to quantify the impact of the disease and its treatments on the occurrence of cognitive decline.MethodsParticipants will be recruited from two main hospitals providing care to approximately half of the patients with prostate cancer in Northern Portugal (Portuguese Institute of Oncology of Porto and São João Hospital Centre), and will comprise a cohort of recently diagnosed patients with prostate cancer proposed for different treatment plans, including: (1) radical prostatectomy; (2) brachytherapy and/or radiotherapy; (3) radiotherapy in combination with androgen deprivation therapy and (4) androgen deprivation therapy (with or without chemotherapy). Recruitment began in February 2018 and is expected to continue until the first semester of 2021. Follow-up evaluations will be conducted at 1, 3, 5, 7 and 10 years. Sociodemographic, behavioural and clinical characteristics, anxiety and depression, health literacy, health status, quality of life, and sleep quality will be assessed. Blood pressure and anthropometrics will be measured, and a fasting blood sample will be collected. Participants’ cognitive performance will be evaluated before treatments and throughout follow-up (Montreal Cognitive Assessment and Cube Test as well as Brain on Track for remote monitoring). All participants suspected of cognitive impairment will undergo neuropsychological tests and clinical observation by a neurologist.Ethics and disseminationThe study was approved by the Ethics Committee of the hospitals involved. All participants will provide written informed consent, and study procedures will be developed to ensure data protection and confidentiality. Results will be disseminated through publication in peer-reviewed journals and presentation in scientific meetings.

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