scholarly journals AVALIAÇÃO DE FUNÇÕES DE AFILAMENTO PARA A ESTIMATIVA DE DIÂMETRO DE ESPÉCIES FLORESTAIS COMERCIAIS DO BIOMA AMAZÔNICO MATO-GROSSENSE

FLORESTA ◽  
2013 ◽  
Vol 43 (2) ◽  
pp. 215 ◽  
Author(s):  
Luciano Rodrigo Lanssanova ◽  
Jaime Antônio Ubialli ◽  
Julio Eduardo Arce ◽  
Allan Pelissari ◽  
Cyro Matheus Favalessa ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Forest Management ◽  
Graphical Analysis ◽  
Amazon Rainforest ◽  
Forest Species ◽  
Mato Grosso ◽  
Segmented Model ◽  
Multiple Products ◽  
Commercial Forest ◽  
Squared Residuals

 O objetivo do presente trabalho foi ajustar, avaliar e selecionar funções de afilamento para a estimativa de diâmetros ao longo do fuste para espécies florestais comercialmente exploradas na Amazônia Mato-grossense. O estudo foi desenvolvido em unidades de manejo florestal, em áreas de Floresta Amazônica, localizadas no município de Santa Carmem, estado do Mato Grosso. Para o ajuste das funções de afilamento, foram cubadas 449 árvores das espécies florestais Goupia glabra, Qualea albiflora, Trattinnickia burseraefolia, Erisma uncinatam e Mezilaurus itauba. Foram ajustados os modelos não segmentados de Schöepfer (1966), Kozak et al. (1969), Hradetzky (1976) e Demaerschalk (1972) adaptado por Moura (1994) e o modelo segmentado de Max e Burkhart (1976). Para avaliar a acuracidade dos ajustes, foi utilizado o coeficiente de determinação ajustado, o erro padrão de estimativa em porcentagem e a análise gráfica dos resíduos, além do valor ponderado dos escores estatísticos e do cálculo das estatísticas auxiliares: desvio, desvio padrão das diferenças, somatório dos quadrados dos resíduos relativos e resíduos percentuais. A função de afilamento de Demaerschalk (1972) adaptada foi a mais acurada para estimar os diâmetros ao longo do fuste de espécies florestais da Amazônia Mato-grossense. Essa função permite descrever a forma dos troncos e possibilita a determinação de sortimentos para múltiplos produtos da madeira.Palavras-chave: Floresta Amazônica; taper; valor ponderado de escores estatísticos. AbstractEvaluation of taper functions for diameter estimated of commercial forest species in amazon matogrossense biome. The aim of this work was to adjust, evaluate and select taper functions for estimating diameters along the stem for commercially exploited species in the Amazon Rainforest in Mato Grosso State. The research was conducted in forest management units in areas of the Amazon Rainforest, located in Santa Carmen, Mato Grosso State. To adjust the taper functions,  449 trees were cubed, of the following species: Goupia glabra, Qualea albiflora, Trattinnickia burseraefolia, Erisma uncinatam and Mezilaurus Itauba. The non-segmented models of Schöepfer (1966), Kozak et al. (1969), Hradetzky (1976), and Demaerschalk (1972), adapted for Moura (1994), and segmented model of Max e Burkhart (1976) were fitted. In order to evaluate the accuracy of adjustments we used the determination coefficient, standard error of estimate in percentage and graphical analysis of the waste, weighted value of statistical scores, and auxiliary statistics: standard deviation, standard deviation of differences, sum of squared residuals and relative percent residue. The function of taper Demaerschalk (1972) was the most accurate to estimate the diameter along the stem for forest species of Amazon Matogrossense. Such function allows to describe the shape of the stem as well as the possibility of determining assortments for multiple products of wood. Keywords: Amazon Rainforest; taper; weighted value of statistical scores.

Long-term response in nutrient load from commercial forest management operations in a mountainous watershed

2021 ◽  
Vol 494 ◽  
pp. 119312
Author(s):  
C. Deval ◽  
E.S. Brooks ◽  
J.A. Gravelle ◽  
T.E. Link ◽  
M. Dobre ◽  
...  
Keyword(s):  
Forest Management ◽  
Nutrient Load ◽  
Mountainous Watershed ◽  
Commercial Forest ◽  
Term Response

scholarly journals DIAGNÓSTICO DA COMERCIALIZAÇÃO DE MADEIRA SERRADA NO ESTADO DE MATO GROSSO

Nativa ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 607
Author(s):  
Leonardo Antônio De Moraes Zaque ◽  
Rafael Rodolfo de Melo ◽  
Diego Martins Stangerlin ◽  
Laercio Serenine Junior
Keyword(s):  
The State ◽  
Timber Species ◽  
Forest Species ◽  
Timber Industry ◽  
Mato Grosso ◽  
Tropical Wood ◽  
Main Species ◽  
A Value ◽  
Timber Trade ◽  
Sawn Timber

O presente estudo teve como objetivo avaliar o comércio madeireiro no estado de Mato Grosso, analisando as principais espécies madeireiras comercializadas e os seus principais produtos gerados. Os dados foram coletados a partir dos relatórios de Beneficiamento e Comércio de Produtos da Madeira por Espécie Florestal e disponibilizados pela Secretaria de Estado do Meio Ambiente de Mato Grosso (SEMA-MT). O diagnóstico foi realizado no período entre 2007 e 2014, onde foram analisados o volume total, os valores comercializados das dez espécies mais comercializadas e dos seus produtos gerados. As dez espécies mais comercializadas (Erisma uncinatum Warm., Goupia glabra Aubl, Qualea albiflora Warm., Qualea paraensis Ducke, Mezilaurus itauba, Qualea sp., Hymenolobium sp., Apuleia sp., Trattinnickia sp. e Vochysia sp.) obtiveram um valor de 5,6 bilhões e um volume aproximado de 10,42 milhões de metros cúbicos no período, que corresponde a 48,60% do volume total comercializado. Os produtos analisados corresponderam a quase 36% de todos os produtos comercializáveis pelas principais espécies em volume, e em valor corresponderam a cerca de 70% do total.Palavras-chave: indústria madeireira; madeira tropical; comércio de madeiras. DIAGNOSIS OF THE COMMERCIALIZATION OF SAWN TIMBER IN THE STATE OF MATO GROSSO ABSTRACT: The present study aimed to evaluate the timber trade in the state of Mato Grosso, analyzing the main timber species traded and its main products generated. The data were collected from the reports of Beneficiation and Trade of Madeira Products by Forest Species and made available by the State Secretariat of Environment of Mato Grosso (SEMA-MT). The diagnosis was made between 2007 and 2014, where the total volume, the commercialized values of the ten most traded species and their products were analyzed. The ten most commercialized species (Erisma uncinatum Warm., Goupia glabra Aubl, Qualea albiflora Warm., Qualea paraensis Ducke, Mezilaurus itauba, Qualea sp., Hymenolobium sp., Apuleia sp., Trattinnickia sp. e Vochysia sp.) obtained a value 5.8 billion and an approximate volume of 10.42 million cubic meters in the period, which corresponds to 48.60% of the total volume traded. The products analyzed corresponded to almost 36% of all products traded by the main species in volume, and in value corresponded to about 70% of the total.Keywords: timber industry; tropical wood; timber trade.

scholarly journals Risk Factors Associated with Breast Cancer

2020 ◽  
pp. 1-3
Author(s):  
Victor Manuel Vargas-Hernandez
Keyword(s):  
Breast Cancer ◽  
Risk Factors ◽  
Standard Deviation ◽  
Descriptive Analysis ◽  
Familial Risk ◽  
Breast Cancer Diagnosis ◽  
Graphical Analysis ◽  
Overweight And Obesity ◽  
Reproductive Life ◽  
Age Range

Background: It is reported that genetic and hereditary-familial risk factors for breast cancer contribute 5% and the majority are related to the reproductive life of women. Objective: it has the purpose of determining if the factors considered as risk factors are associated with breast cancer in a group of Mexican women. Material and Methods: A retrospective, observational and descriptive study was carried out in 162 women with breast cancer for 3 years (2002-2004) at the Hospital Juárez de México to determine if the usual risk factors are related to breast cancer. The descriptive analysis included localization and dispersion measures, as well as a graphical analysis using bar diagrams. Results: In the sample of 162 women with breast cancer, the age range at the time of breast cancer diagnosis was from 27 to 78 years (mean of 47.60, standard deviation of 13.09); early menarche only appeared in 12.3% (n=20). The mean age of the first pregnancy was 22 years and of menopause at 51 years of age; 72.2% lactated (n=117) and 45.1% did so for more than 6 months (n=73); the menstrual pattern disorder appeared in 22.8% of cases (n=37); Menopausal hormone therapy was previously used in 19.8% (n=32). The hereditary-family history of breast cancer appeared in 14.2% of the cases (n=23). It seems to be correlated with the fact that in patients with nulliparity, alcoholism and the absence of breastfeeding, breast cancer occurs at an early age (< 45 years) and the risk factor that is related to breast cancer is overweight and obesity with 54.26% and 17.11% respectively (average of 28.00, standard deviation of 3.032). Conclusion: no correlation was found between risk factors considered common for breast cancer; only overweight and obesity were related to its development, further research is required to confirm whether this correlation occurs in other countries.

scholarly journals Anatomical characterization of wood for identification of the Tachigali Aubl. species

2021 ◽  
Vol 12 (3) ◽  
pp. 38-46
Author(s):  
João Fideles de Brito Junior ◽  
Marta Silvana Volpato Sccoti ◽  
Scheila Cristina Biazatti ◽  
Bárbara Luísa Corradi Pereira
Keyword(s):  
Forest Management ◽  
Surveillance System ◽  
National Forest ◽  
Forest Species ◽  
Axial Parenchyma ◽  
The Core ◽  
Reproductive Structures ◽  
Management Plans ◽  
Main Attribute

In the Amazon many forest species present problems of identification and obtaining botanical material with reproductive structures is not always possible. The macro and microscopic characteristics of the wood of three species of the genus Tachigali Aubl were analyzed in order to determine basic differences among the species. The collection of material was carried at the Forest Management Unit III, in the Flona do Jamari (Jamari National Forest), where we selected arboreal individuals from the species Tachigali poeppigiana Tul., Tachigali setifera (Ducke) Zarucchi & Herend and Tachigali subvelutina (Benth.) Oliveira-Filho, commonly known in Brazil as Tachi Preto (Black Tachi), Tachi Vermelho (Red Tachi) and Tachi Amarelo (Yellow Tachi), respectively, in which the coloring of the core is the main attribute for assigning their vernacular name. Heartwood samples were collected for the making of the specimens. The axial parenchyma was vasicentric and unilateral for T. poeppigiana and T. setifera, and unilateral and sparse for T. subvelutina. Pores were classified as medium and large for T. setifera and T. poeppigiana and very uncommon for T. subvelutina; however, they are medium and very uncommon for the three species. All species showed uniseriate, non-stratified and homogeneous rays. We concluded there are anatomical characteristics that allow the differentiation of the species from the genus Tachigali, which may be used to assist in forest management plans, as well as the surveillance system.

Examining the effectiveness of Sentinel-1 and 2 imagery for commercial forest species mapping

2019 ◽  
Vol 36 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Mthembeni Mngadi ◽  
John Odindi ◽  
Kabir Peerbhay ◽  
Onisimo Mutanga
Keyword(s):  
Forest Species ◽  
Commercial Forest ◽  
Species Mapping

scholarly journals Cost of territorial maintenance by Parodon nasus (Osteichthyes: Parodontidae) in a Neotropical stream

2009 ◽  
Vol 7 (4) ◽  
pp. 677-682 ◽  
Author(s):  
Samuel Elias Silva ◽  
Wilhan R. C. Assunção ◽  
Charles Duca ◽  
Jerry Penha
Keyword(s):  
Spatial Distribution ◽  
Standard Deviation ◽  
Territorial Behavior ◽  
Maintenance Cost ◽  
Behavioral Patterns ◽  
Mato Grosso ◽  
Neotropical Stream ◽  
The Relationship

The combined demand over a certain resource may exceed its immediate supply, which can then lead to competition between individuals. This competition may result in territorial behavior. In this study we determine the density and spatial distribution, describe the interactions arising from territorial behavior and evaluate the costs of keeping the territories defended by adults of Parodon nasus. The study was conducted in Camarinha Stream located in the Serra das Araras Ecological Station, Porto Estrela, State of Mato Grosso, Brazil. The density was constant throughout the length of the stream, with a mean (± standard deviation) of 1.01 ind./m² (± 0.14). Our results show that the spatial distribution of individuals in the area ranged between uniform and random. The territories were defended more often against intraspecific than interspecific intruders. The time that the owners of the territories devoted to defending them was not influenced by the size of the territories. However, owners of larger territories spent more time foraging than owners of smaller territories. As a result, owners of larger territories had less time to rest than owners of smaller territories. The results of this study show behavioral patterns relevant to understanding the relationship between size and territorial maintenance cost of P. nasus and other species of fish with territorial behavior.

scholarly journals Evaluation of smartphone applications for measuring the total height of trees

2021 ◽  
Vol 14 (2) ◽  
pp. 7
Author(s):  
J. M. D. Oliveira ◽  
J. P. M. D. Oliveira ◽  
L. S. Cardoso ◽  
D. H. S. Ataíde ◽  
R. A. Curto ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Graphical Analysis ◽  
Smartphone Applications ◽  
Statistical Parameters ◽  
Height Variation ◽  
Total Height ◽  
Simple Measure ◽  
Significant Difference ◽  
Precision And Accuracy ◽  
H 20

The objective of this study was to evaluate the precision and accuracy of smartphone applications for measuring the total height of trees. We measured the heights of 90 trees of different species on the campus of the Federal Rural University of Rio de Janeiro in Seropédica, equally distributed in three height classes: (1) h ≤ 11.5 m; (2) 11.5 <h < 20 m; and (3) h ≥ 20 m. The heights measured by the Vertex III® hypsometer was the reference for the comparison of the tested applications: Measure Height (MH and MDH), Hypsometer (HYP), Simple Measure (SM), Height Calculator (HC), Smart Tools (ST), Height and Distance (HD), Two Point Height (TPH and TPH2) and Tree Meter (TM) using the MOTO G5 smartphone. For data analysis, we performed an F (α = 0,05) test, and if there is a significant difference Dunnett's mean test (α = 0,05) was applied, and height variation coefficients (CV%) were analyzed for all applications used. Then, we carried out the graphical analysis of the differences and the statistical parameters of Bias (V), Mean of Absolute Differences (MD), Standard Deviation of Differences (DPD), ending with the performance index (c). We concluded that the applications Height Calculator (HC), Smart Tools (ST) and, Two Point Height, (TPH) present greater precision and accuracy in the measurement of the total height of the trees. However, we observed that increasing the height of the trees, reduces the performance of the applications, mainly using the Simple Measure (SM) and Height and Distance (HD) applications. The Tree Meter (TM) can be used on trees smaller than 20 m in total height. Measure Height (MH and MDH) and Hypsometer (HYP) applications have low precision and accuracy in estimates.

Testing the utility of multivariate techniques in mapping commercial forest species using freely available Landsat 8 Operational Land Imager (OLI)

2020 ◽  
Vol 25 (5) ◽  
pp. 354-357 ◽  
Author(s):  
Mthembeni Mngadi ◽  
John Odindi ◽  
Kabir Peerbhay ◽  
Onisimo Mutanga ◽  
Mbulisi Sibanda
Keyword(s):  
Multivariate Techniques ◽  
Landsat 8 ◽  
Forest Species ◽  
Commercial Forest
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