scholarly journals Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil

Rodriguésia ◽  
2011 ◽  
Vol 62 (2) ◽  
pp. 425-436 ◽  
Author(s):  
Daniel David Franczak ◽  
Beatriz Schwantes Marimon ◽  
Ben Hur Marimon-Junior ◽  
Henrique Augusto Mews ◽  
Leandro Maracahipes ◽  
...  
Keyword(s):  
Community Dynamics ◽  
Basal Area ◽  
Importance Value ◽  
Mato Grosso ◽  
Transition Zones ◽  
Absolute Density ◽  
Gap Opening ◽  
Set Up ◽  
The One

Abstract Vegetation changes in transition zones are still poorly studied. Changes in the vegetation structure of a savanna forest (cerradão) were assessed in the Amazon-Cerrado transition (14º42'2.3"S; 52º21'2.6"W), eastern Mato Grosso, within a period of six years (2002, 2005 and 2008). In 2002, fifty plots of 10 × 10 m were set up, where all trees with DSH30 ≥ 5 cm were measured; in 2005 and 2008 the plots were re-inventoried. In 2008, 84 species from 70 genera and 37 families were sampled; absolute density was 1,998 individuals/ha and basal area was 25.95 m2.ha-1. On the one hand, the absolute density of live individuals decreased from 2005 to 2008 (2,066 individuals/ha); on the other hand, the basal area increased in 2008 compared to 2005 (23.56 m2.ha-1) and 2002 (1,884 individuals/ha and 21.38 m2.ha-1). The species with the highest importance value in the period were Hirtella glandulosa, Tachigali vulgaris and Xylopia aromatica. Except for these three species, all other species underwent hierarchic changes in the importance value, indicating that most species frequently alternate. Community structure exhibited changes throughout the period; hence, we suggest investigations on the role of T. vulgaris in these changes, since environmental conditions caused by gap opening from the fall of senile individuals of this pioneer species with a short life cycle may contribute to community dynamics.

scholarly journals Analisis Is Structure and Vegetation Composition Increases Tree and Pillar at Hutan Lindung Oereu Village Bani Bani Is Io Kufeudistrict Malacca Regency

2020 ◽  
Vol 5 (1) ◽  
pp. 24-36
Author(s):  
Angela Niis
Keyword(s):  
Basal Area ◽  
Tectona Grandis ◽  
Tree Level ◽  
Importance Value Index ◽  
Importance Value ◽  
Transect Line ◽  
Absolute Density ◽  
The One ◽  
Index Value ◽  
Important Value Index

The purpose of this study was to determine the tree and pole-level plant species found in the Oereu Protected Forest Bani-Bani Village Io Kufeu District of Malacca District, To find out the structure and composition of tree-level plant vegetation and poles found in the Oereu Protected Forest in the Bani-Bani Village District of Io Kufeu District of Malacca, and To implement research on the structure and composition of tree and pole level vegetation in the Oereu Protection Forest of Desa Bani-Bani District of Io Kufeu District of Malacca in learning biology in schools. The method used in this study is the quadratic method by placing a plot beside the transect line. At each transect line, 5 observation plots were placed with the size of each plot 20 mx 20 m = 400 m2 for tree level, and 10 mx 10 m = 100 m2 for pole level, with a distance between plots 25 m. analyzing the structure and composition of tree-level vegetation, and poles found at research sites, namely by calculating absolute density, relative density, absolute frequency, relative frequency, basal area, relative basal area, and important value index. The results of the study were found as many as 13 types of plants consisting of 11 families. When looking at the importance value index at tree level vegetation, the highest important value index is Tectona grandis, L, 57.35%, while the one with the lowest important value index is Alstonia scholaris, L 13.22%, and at pole level vegetation, the index value the highest importance is Tectona grandis, L, 36.33%, while the one with the lowest important value index is Leucena lenccophalla, 16.25%. The type of vegetation that has the highest important value index is because it has a fairly high distribution ability and can adapt well to its environment.

scholarly journals Quality of learners at the start of each educational process

2019 ◽  
Vol 9 (14) ◽  
Author(s):  
Abdennasser Naji
Keyword(s):  
Control Systems ◽  
Preventive Measures ◽  
Educational Process ◽  
Service Needs ◽  
True Value ◽  
Previous Cycle ◽  
Set Up ◽  
The One

The education system is organized in the form of cycles, each feeding the one following it with learners. They will continue their studies in the destination cycle, and their future will certainly depend, at least in part, on the quality of the skills acquired in the previous cycle. Given the divergences and disparities existing between the different cycles mainly due to the fact that each responds to its own design logic and in the absence of coordination between them, there is a huge lack of quality to gain at the interface of the cycles . The referral system that plays the role of supply service needs to be updated to strengthen educational quality, but it is not the only one. It is also necessary to help the orienting staff to assess the quality of the learners at its true value, to set up partnership links between the cycles to help each other in favor of quality, and to set up reception control systems at the entry of each cycle, supported by corrective and preventive measures.

scholarly journals TEMPORAL VARIATION IN CERATIUM SPP. ABUNDANCE RECORDED IN JAKARTA BAY

2015 ◽  
Vol 37 (1) ◽  
pp. 35-45
Author(s):  
Hikmah Thoha
Keyword(s):  
Relative Density ◽  
Phytoplankton Community ◽  
Mesh Size ◽  
Temporal Variations ◽  
Importance Value ◽  
Serial Sampling ◽  
Absolute Density ◽  
Counting Chamber ◽  
Set Up ◽  
Fraction Method

Ceratium is non-toxic dinoflagellate which has been regarded as the most common bloom-forming species in the coastal waters around the world. Eventhough research and monitoring on phytoplankton In Jakarta Bay have been conducted for long enough, no specific attention has been given to Ceratium community. Therefore, a research was set up in order to understand the dynamic of Ceratium population and its regulating factors. A serial sampling was conducted in 10 stations during 2009 and 2010. Phytoplankton was sampled in horizontal towing using Kitahara plankton net (80 μm mesh size, 0.5 m mouth diameter and 1m length). Phytoplankton enumeration and identification were done by applying Fraction Method on Sedgewick Rafter Counting Chamber (SRCC). The result showed clear temporal variations in Ceratium absolute density, relative density, relative frequency and importance value. When phytoplankton bloomed in August 2009, no Ceratium bloom observed. High density of Ceratium was observed in November 2009 and May 2010, but it contributed relatively small proportion to phytoplankton as a whole (relative density <1%). Due to its low density and relatively limited distribution in Jakarta Bay, Ceratium may demonstrate limited ecological role to the phytoplankton community.

scholarly journals Performance Evaluation of Karnataka Vikas Grameena Bank towards Priority Sector Lending in Karnataka

2016 ◽  
Vol 4 (2) ◽  
pp. 303
Author(s):  
Y. G. Baligatti ◽  
Shilpa Danappanavar
Keyword(s):  
Performance Evaluation ◽  
Financial Institutions ◽  
Rural Areas ◽  
Rural Poor ◽  
Rural Credit ◽  
Agriculture Sector ◽  
Set Up ◽  
The One ◽  
Economic Improvement

<div><p><em>Rural Banking in India refers to a set up of financial institutions for the economic improvement of rural poor in rural areas. The Karnataka Vikas Grameena Bank is the one of the leading RRBs in Karnataka and has occupied an unique place in the multiagency approach applied to provide agricultural and rural credit in rural areas of Karnataka. </em><em>The KVG Bank has the front runner in catering to the needs of the farmers, traders, rural artisans, Professionals, self-employed, contractors and all other sections of the society.</em></p><p><em>In this paper an attempt is made to evaluate the role of the Karnataka Vikas Grameena Bank towards priority sector lending in Karnataka, through the parameters like disbursement of loan to various priority sectors like Agriculture, allied Activities, SSI units and Trade or Services. The study reported that,</em> <em>the KVG Bank has provided highest loan to agriculture as compare to other sector of the rural area and playing the significant role towards the development of agriculture sector. Further it is noted that the priority sector advances of the bank to allied activities is insignificant reflecting its utter negligence of allied activities.</em></p></div>

scholarly journals Rola terenowej administracji publicznej w zapobieganiu sytuacjom kryzysowym

2016 ◽  
Vol 106 ◽  
pp. 123-134
Author(s):  
Andrzej Pakuła
Keyword(s):  
Public Administration ◽  
Critical Role ◽  
Specific Area ◽  
Local Authorities ◽  
Government District ◽  
Set Up ◽  
The One ◽  
Executive Officers ◽  
Council Of Ministers

THE ROLE OF LOCAL PUBLIC ADMINISTRATION IN PREVENTING CRISIS SITUATIONSCrisis management is a specific area of public safety protection. Competent authorities in this area include on the one hand, Council of Ministers and on the other, territorial local authorities belonging both to local administration voivodes and local government district governors and municipal executive officers/town mayors/city presidents. The territorial local authorities play a critical role here as they are a specific structure set up for crisis management.

scholarly journals Interview

1988 ◽  
Vol 17 (5) ◽  
pp. 8-9 ◽  
Author(s):  
Lev Timofeev
Keyword(s):  
Human Rights ◽  
The Other ◽  
Political Prisoners ◽  
Political Prisoner ◽  
Highly Qualified ◽  
Portable Computer ◽  
The Press ◽  
Set Up ◽  
The One

The editor of the independent journal Referendum explains the role of his publication, and why the authorities are softer on him than they were. ‘On the one hand there are still several hundred political prisoners. On the other hand those of us who have been released are at present able to operate relatively freely.’ In February 1987 Lev Timofeev was prematurely released from camp as a result of a government decree, under which a large number of political prisoners were amnestied. Together with Sergei Grigoryants, another ex-political prisoner, he set up the unofficial bulletin Glasnost last summer. Grigoryants now edits Glasnost, while Timofeev has started his own journal, Referendum. He also leads the independent ‘Press Club Glasnost’, which organised an unofficial conference on human rights in December 1987. The Press Club is planning to set up a form of open university, using a number of highly-qualified ex-political prisoners as teachers. I interviewed Lev Timofeev in Moscow in January. As we talked in his study, a neat portable computer - which had come from abroad but quickly learned to speak fluent Russian - was printing out the fourth issue of Referendum. S.L.

STUDIES IN MONODOMINANT FORESTS IN EASTERN MATO GROSSO, BRAZIL: I. A FOREST OF BROSIMUM RUBESCENS TAUB

2001 ◽  
Vol 58 (1) ◽  
pp. 123-137 ◽  
Author(s):  
B. S. MARIMON ◽  
J. M. FELFILI ◽  
M. HARIDASAN
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Basal Area ◽  
Low Fertility ◽  
Diameter Distribution ◽  
Total Density ◽  
Importance Value ◽  
Mato Grosso ◽  
High Concentrations ◽  
Amazonian Forests

The occurrence of a monodominant tropical forest dominated by the tree species Brosimum rubescens Taub. (Moraceae) in the transition zone between the cerrado region and the Amazonian rain forests along the Araguaia valley in the state of Mato Grosso in Brazil is reported. A 6000m2 (40×150m) area located in the central portion of a forest (14°50′47″S, 52°08′37″W) on the Eldorado Farm in Nova Xavantina was sampled to determine the structure, phytosociology and soil properties. A total of 44 tree species was found in the forest, with a Shannon diversity index (H′) of 2.37 and the Pielou evenness index (J′) of 0.63. These values were similar to those reported by other workers in an Amazonian monodominant forest dominated by Peltogyne gracilipes. Average tree density equal or greater than (≥) 5cm dbh was 1066ha−1 and basal area 37.46m2 ha−1. Dead standing individuals represented 7.03% of the total density and lianas 8.12%. The main families were Moraceae, Rubiaceae, Burseraceae, Hippocrateaceae and Leguminosae–Caesalpinioideae. The species with the highest importance value indices were B. rubescens (124.55), Amaioua intermedia var. brasiliana (32.97), Cheiloclinium cognatum (22.41), Tetragastris balsamifera (19.58) and Protium pilosissimum (16.64). Brosimum rubescens alone accounted for 85.5% of the individuals ≥30cm dbh, 80.35% of those ≥20cm dbh, 57.33% of those ≥10cm dbh, and 35.85% of those ≥5cm dbh. The forest was composed of upper, middle and lower storeys. Diameter distribution was unbalanced for the community and for the main species, suggesting that establishment has been episodic. The surface soil was acid, with high exchangeable Al levels and low fertility, as is the case for most cerrados and Amazonian forests. The availability of K was in the range of adequacy, as compared with most native soils. However, concentrations of available Mg in the soil was higher than that of available Ca, with Mg/Ca ratios above three, unlike most cerrados and Amazonian forests, but similar to the soils of many monodominant tropical forests reported in the literature. Soils were characterized by high concentrations of available Fe. Besides the high Mg/Ca ratios, a high proportion of K as compared with the bivalent cations Ca and Mg, and toxicities of Fe and Mn due to strong acidity could be factors influencing the occurrence of species in this forest.

scholarly journals Diagnóstico florístico e ambiental de um bosque de manguezal na Reserva Extrativista Chocoaré Mato Grosso, Santarém Novo, Pará, Brasil

2020 ◽  
Vol 13 (3) ◽  
pp. 1080
Author(s):  
Michel Augusto Santos ◽  
Rubens Ramos Dias ◽  
Mário Augusto Gonçalves Jardim
Keyword(s):  
Relative Frequency ◽  
Mangrove Forest ◽  
Basal Area ◽  
Rhizophora Mangle ◽  
Avicennia Germinans ◽  
Laguncularia Racemosa ◽  
Importance Value ◽  
Mato Grosso ◽  
Extractive Reserve ◽  
Good State

O objetivo da pesquisa foi realizar o diagnóstico florístico e ambiental em um trecho de bosque de manguezal na Reserva Extrativista Chocoaré Mato Grosso, Santarém Novo, Pará. O estudo foi realizado em julho e agosto de 2019 em 10 parcelas de 10 m x 50 m, e mensurada altura e DAP ≥ 2,5 cm de todas as espécies arbóreas e calculados os parâmetros fitossociológicos de altura, diâmetro, frequência relativa, densidade relativa, área basal, dominância relativa, valor de cobertura e  valor de importância. O diagnóstico ambiental foi quatro comunidades (Vila de Pedrinhas, Sede, Vila de Pirateua, e Vila de Pacuja) e aplicados questionários semi-estruturados com questões abertas e fechadas sobre informações pessoais, percepção ambiental, uso do mangue e perguntas abertas)  para diferentes categorias (pescador, caranguejeiro, funcionário público, comunitários e estudantes). Foram registradas três famílias, três gêneros e três espécies distribuídas em 620 indivíduos com 447 de Rhizophora mangle L., 119 de Avicennia germinans (L.) Stearn e 54 de Laguncularia racemosa (L.) Gaertn. Rhizophora mangle ocorreu em todas as parcelas, enquanto Laguncularia racemosa (tinteiro) em apenas cinco parcelas. No diagnóstico ambiental (DA) foram entrevistadas 30 pessoas e a comunidade de pedrinhas foi que obteve maior número de entrevistados devido utilizar com frequência o manguezal seguida por Santarém Novo com 11 entrevistados. No diagnostico ambiental a Resex se propicia de uma boa conservação. Os entrevistados mostraram-se preocupados com a conservação da UC para gerar uma harmonia entre homem e natureza buscando a sustentabilidade pesqueira daquele povo local, que também utiliza-se de outros recursos para complementar sua renda.  Floristic and environmental diagnosis of a mangrove forest in the Chocoaré Mato Grosso Extractive Reserve, Santarém Novo, Pará, BrazilA B S T R A C TThe objective of the research was to carry out the floristic and environmental diagnosis in a stretch of mangrove forest in the Chocoaré Mato Grosso Extractive Reserve, Santarém Novo, Pará. The study was carried out in July and August 2019 in 10 plots of 10 mx 50 m, and height and DBH ≥ 2.5 cm of all tree species were measured and phytosociological parameters of height, diameter, relative frequency, relative density, basal area, relative dominance, cover value and importance value were calculated. The environmental diagnosis was applied to the residents of the municipality's headquarters, Vila de Pedrinhas, Vila de Pirateua and Vila de Pacuja) using semi-structured questionnaires with open and closed questions. Three families, three genera and three species were registered in 620 individuals with 447 of Rhizophora mangle L., 119 of Avicennia germinans (L.) Stearn and 54 of Laguncularia racemosa (L.) Gaertn. Rhizophora mangle occurred in all plots, while Laguncularia racemosa (inkwell) in five plots. According to the environmental diagnosis, the pebble community uses the mangrove more frequently and claims that it is in a good state of conservation, generating harmony between man, nature and environmental sustainability.Keywords: Phytosociology; Environmental perception; Knowledge.

scholarly journals Understanding the growth of the Fediverse through the lens of Mastodon

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Lucio La Cava ◽  
Sergio Greco ◽  
Andrea Tagarelli
Keyword(s):  
Online Social Networks ◽  
Structural Features ◽  
Primary Role ◽  
Extensive Analysis ◽  
Open Questions ◽  
Starting Point ◽  
Set Up ◽  
The One ◽  
Distinguishing Features

AbstractOpen-source, Decentralized Online Social Networks (DOSNs) are emerging as alternatives to the popular yet centralized and profit-driven platforms like Facebook or Twitter. In DOSNs, users can set up their own server, or instance, while they can actually interact with users of other instances. Moreover, by adopting the same communication protocol, DOSNs become part of a massive social network, namely the Fediverse. Mastodon is the most relevant platform in the Fediverse to date, and also the one that has attracted attention from the research community. Existing studies are however limited to an analysis of a relatively outdated sample of Mastodon focusing on few aspects at a user level, while several open questions have not been answered yet, especially at the instance level. In this work, we aim at pushing forward our understanding of the Fediverse by leveraging the primary role of Mastodon therein. Our first contribution is the building of an up-to-date and highly representative dataset of Mastodon. Upon this new data, we have defined a network model over Mastodon instances and exploited it to investigate three major aspects: the structural features of the Mastodon network of instances from a macroscopic as well as a mesoscopic perspective, to unveil the distinguishing traits of the underlying federative mechanism; the backbone of the network, to discover the essential interrelations between the instances; and the growth of Mastodon, to understand how the shape of the instance network has evolved during the last few years, also when broading the scope to account for instances belonging to other platforms. Our extensive analysis of the above aspects has provided a number of findings that reveal distinguishing features of Mastodon and that can be used as a starting point for the discovery of all the DOSN Fediverse.

scholarly journals Composição florística e estrutural de um componente arbóreo em área de cerrado, Paranã-TO

2015 ◽  
Vol 10 (5) ◽  
pp. 108
Author(s):  
A. B. M. L. Rêgo ◽  
P. B. Souza ◽  
R. R. Silva ◽  
P. L. Rêgo
Keyword(s):  
Diversity Index ◽  
Basal Area ◽  
Floristic Composition ◽  
Sensu Stricto ◽  
Importance Value Index ◽  
Importance Value ◽  
Closed Area ◽  
Absolute Density ◽  
Density Values ◽  
Individual Trees

<p>O Cerrado Brasileiro apresenta uma enorme diversidade de fitofisionomias divididas em formações florestais, savânicas e campestres. Com o objetivo de estudar a composição florística e estrutural de um fragmento de cerrado <em>sensu stricto</em>, a fim de fornecer subsídios para conservação e manejo adequado de áreas similares. Foram instaladas sistematicamente quatro parcelas de 25x100m, sendo que as mesmas foram distanciadas 25 m entre si, perfazendo um total de 1,0 hectare de área amostral. No interior das parcelas, foram amostrados todos os indivíduos arbustivo-arbóreos, com circunferência a 1,30m do solo (CAP) maior ou igual a 15 cm. Para obtenção dos parâmetros fitossociológicos densidade relativa (DR), densidade absoluta (DA), dominância absoluta (DoA), dominância relativa (DoR), frequência absoluta (FA), frequência relativa (FR), índice de valor de importância (IVI), índice de valor de cobertura (IVC), índice de diversidade de Shannon (H’) e Pielou (J). Foram amostrados 245 indivíduos, distribuídos em 29 espécies, 29 gêneros pertencentes a 20 famílias, o que corresponde a uma área basal total de 1,94 m².ha<sup>-1</sup> e densidade absoluta estimada de 327 ind.ha<sup>-1</sup>. As espécies que apresentaram maiores valores de (IVI) foram <em>Qualea parviflora</em> (38,45%), <em>Curatella americana</em> (34,53%), <em>Byrsonima verbascifolia</em> (32,20%), <em>Psidium incanescens</em> (31,89%), <em>Pterodon emarginatus </em>(18,62%) e <em>Anachardium humile</em> (18,34%). <em>Qualea parviflora</em> foi a espécie mais representativa dentro do componente arbóreo o que se conclui aos altos valores de densidade e dominância nos estratos.</p><p align="center"><strong><em>Floristic composition and structural components of a tree in closed area in the municipality of Parana-Tocantins </em></strong></p><p><strong>Abstract</strong><strong>: </strong>The Brazilian Cerrado presents a huge diversity of vegetation types divided into forests, savannas and country. In order to study the floristic and structural composition of a cerrado fragment in order to provide subsidies for conservation and proper management of similar areas. Systematically they were installed four installments of 25x100 m, being that they were spaced 25 m apart, totaling 1.0 hectare sample area. Inside the plots were sampled every shrub and individual trees with circumference at 1.30 m soil (CAP) greater than or equal to 15 cm. To obtain the Phytosociological relative density parameters (DR), absolute density (DA), absolute dominance (DoA), relative dominance (DoR), absolute frequency (AF), relative frequency (RF), importance value index (IVI) Coverage value index (CVI), Shannon diversity index (H ') and Pielou (J). We sampled 245 individuals belonging to 29 species, 29 genera belonging to 20 families, which corresponds to a basal area of 1.94 m².ha<sup>-1</sup> and estimated absolute density of 327 ind.ha<sup>-1</sup>. The species showing higher values of (IVI) were <em>Qualea parviflora</em> (38.45%), <em>American Curatella</em> (34.53%), <em>Byrsonima verbascifolia</em> (32.20%), <em>Psidium incanescens</em> (31.89%), <em>Pterodon emarginatus</em> (18.62%) and <em>Anachardium humile</em> (18.34%). <em>Qualea parviflora</em> was the most representative species within the arboreal component which is concluded to high density values and dominance in the strata.</p>

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