scholarly journals REGENERAÇÃO NATURAL EM SUB-BOSQUE DE Corymbia citriodora NO NOROESTE DO ESTADO DO PARANÁ

FLORESTA ◽  
2011 ◽  
Vol 41 (2) ◽  
Author(s):  
Edilson Batista de Oliveira ◽  
Letícia Penno de Sousa ◽  
Maria Izabel Radomski
Keyword(s):  
Rural Areas ◽  
Natural Regeneration ◽  
Native Species ◽  
Structural Parameters ◽  
Floristic Composition ◽  
Forest Recovery ◽  
Forest Plantations ◽  
Ecological Group ◽  
North West ◽  
Corymbia Citriodora

O desenvolvimento de espécies nativas plantadas em consórcio com eucaliptos, ou regeneradas naturalmente em povoamentos dessas espécies, vem sendo acompanhado em propriedades rurais do noroeste do estado do Paraná. Esses sistemas se destacam por constituir uma opção para a recuperação da cobertura florestal em ambientes degradados pela pecuária e agricultura intensivas, propiciando rentabilidade econômica, com possibilidade de atender a legislação ambiental para Reserva Legal. O presente trabalho visa conhecer o potencial de recomposição da vegetação nativa em sub-bosque de Corymbia citriodora, nas condições ambientais e de uso do solo daquela região. Assim, foi avaliada a composição florística e a estrutura da vegetação formada sob a rebrota de um povoamento dessa espécie, situado em São Pedro do Paraná (PR). Foram encontradas cinquenta e três espécies oriundas de regeneração natural numa densidade de 4.725 plantas por hectare. As plantas, identificadas até o nível de espécie, foram enquadradas segundo seu grupo ecológico e/ou usos potenciais.Foram observados parâmetros estruturais que mostraram o elevado potencial de regeneração natural e crescimento da vegetação em sub-bosque de C. citriodora, indicando que, com manejo adequado, essa espécie pode ser usada como uma facilitadora para fins de recomposição de vegetação nativa.Palavras-chave: Regeneração natural; plantação florestal; composição florística. AbstractNatural regeneration in understory of Corymbia citriodora plantation, in north-west of Paraná state, Brazil. Natural regeneration in eucalyptus stands, as well as forest plantations that combine eucalyptus and native species, have been monitored in rural areas in the north-west of Paraná State, Brazil. Such forest systems involving eucalyptus represent an alternative for forest recovery and regeneration in areas degraded by livestock and intensive agriculture. Furthermore, such plantations offer new economic opportunities for landowners while providing incentives for their compliance with environmental regulations for saving a minimum amount of forested land (Reserva Legal). This study aims to understand the potential of natural vegetation recovery in the understory of Corymbia citriodora stands, due to the context of current environment and land use in the region. Thus, it evaluates floristic composition and vegetation structure in the understory re-growth within such plantation stands, in São Pedro do Paraná (Paraná State). As result, it identified 53 species from natural regeneration at a density of 4725 plants per hectare. Such plants, identified at the species level, were organized accordingly to their ecological group and/or potential uses. The observed structural parameters pointed to a high potential for natural regeneration and growth of vegetation in the understory of C. citriodora, which reveals that, with appropriated management, these species could be used to make native restoration vegetation easer in the region.Keywords: Natural regeneration; forest plantations; floristic composition.

scholarly journals Forest restoration in the floodplains of the Amazon estuary subjected to intensive açaí management

2021 ◽  
Vol 24 ◽  
Author(s):  
Rosileia da Costa Carvalho ◽  
Lívia de Freitas Navegantes Alves ◽  
Renan do Vale Carneiro
Keyword(s):  
Natural Regeneration ◽  
Native Species ◽  
Forest Restoration ◽  
Floristic Composition ◽  
Floodplain Forest ◽  
Forest Recovery ◽  
Floodplain Forests ◽  
Structured Interviews ◽  
Ecosystem Conservation ◽  
Amazon Estuary

Abstract The expansion and intensification of açaí management in floodplain forests of the Amazonian estuary have resulted in changes in floristic composition and in biodiversity losses, causing problems to ecosystems and endangering livelihoods of riverine communities. These transformations have prompted the need for forest restoration. The objective of this study was to identify and analyze forest recovery initiatives carried out in floodplain forests previously subjected to intensive açaí management in the Amazonian estuary. Methods included structured interviews and questionnaires. Results reveled the following restoration types: 1) area enrichment: subtype 1 - high floodplain forest (7.89%) and subtype 2 - low floodplain forest (44.75%); 2) directing natural regeneration of native species (34.21%); 3) cultivation of native species (13.15%). Results suggest that forest restoration efforts can promote sustainable production of açaí, productive diversity, ecosystem conservation and generate income for riverine families.

scholarly journals Anthropophytes in the flora of different spatial units within old rural settlements of the Lubuskie Lakeland, western Poland

2015 ◽  
Vol 39 (1) ◽  
pp. 19-32
Author(s):  
Katarzyna Jasińska ◽  
Andrzej Brzeg ◽  
Maria Wojterska
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Native Species ◽  
Floristic Composition ◽  
Buffer Zone ◽  
Common Species ◽  
Rural Settlements ◽  
Dominant Group ◽  
Surrounding Landscape ◽  
Landscape Units

AbstractStudies of the flora of villages in a connection with the surrounding landscape are rare and mostly limited to the built-up area and its general location in a geographical region. Thus, the aim of this study was to examine the diversity patterns of flora against the background of local landscape units in the rural areas and to analyse them in the context of village transformation. The study comprised 30 villages of medieval origin representing the oval-shape type, with differently preserved structure of built-up area and cultivated fields, located in the Lubuskie Lakeland. The terrain within a buffer zone of 200 m in width, located outside of the built-up area, was divided into spatial complexes. In each of these complexes, floristic lists were compiled. The structure of surrounding landscape within the buffer zone of 1 km in width, measuring from the village centroid, was analysed using ArcGIS.The recorded flora comprised 767 taxa of spontaneously occurring vascular plants. Extremely rare and common species were the most numerous. Native species distinctly prevailed over alien in all types of spatial complexes and the majority of them occurred in the habitats transformed by man. There were noted altogether 244 species of anthropophytes.The index of anthropophytization of flora (WAnt) showed that both types of built-up areas (transformed and non-transformed) reached the highest values, slightly higher than fields and central green. Index of flora modernization (WM) showed the same pattern. Only water bodies were strikingly different from other complexes in respect to both indices (WAnt - significantly lower values, while WM - much higher). Differences in the floristic composition of transformed and non-transformed villages were not significant at the level of whole village. The villages were still harbouring rare species from the group of relics of former cultivation and archaeophytes, but observations conducted since 2007 confirmed that they have been decreasing in number. The percentage of groups of species with different affinity toward urban areas have shown that in the studied rural areas, the share of urbanophilic species is still very low as compared to the dominant group of urbanoneutral and moderately urbanophobic species.

scholarly journals Regeneração natural em povoamentos de Araucaria angustifolia e Pinus sp. em Tunas do Paraná, PR

2016 ◽  
Vol 36 (85) ◽  
pp. 9 ◽  
Author(s):  
Joema Carvalho ◽  
Santiago José Elías Velazco ◽  
Tiaro Katu Pereira ◽  
Franklin Galvão
Keyword(s):  
Natural Regeneration ◽  
Native Species ◽  
Floristic Composition ◽  
Ground Level ◽  
Forest Plantation ◽  
Araucaria Angustifolia ◽  
Conservation Unit ◽  
Important Species ◽  
Above Ground Level

Com o propósito de estudar a regeneração natural em povoamentos de Araucaria angustifolia (PA) e Pinus sp.(PP), sem manejo, nas áreas do Parque Estadual de Campinhos, no Município de Tunas do Paraná, PR, foram instaladas 18 parcelas de 10 m2, 7 para PA e 11 para PP. Amostraram-se todos os indivíduos maiores que 1,5 m de altura, dos quais se mensurou o perímetro à 1,30 m do nível do solo. No PA obteve-se 586 indivíduos, 67 espécies e 29 famílias e no PP foram mensurados 442 indivíduos de 58 espécies e 22 famílias. As espécies mais importantes no PA foram Cordyline spectabilis, Lonchocarpus muehlbergianus e Clethra scabra, e no PP C. spectabilis, Lonchocarpus sp1. e Cupania vernalis. O PA apresentou parâmetros fitossociológicos e diversidade superiores ao PP. A composição florística foi similar em ambos, o que denotou o potencial regenerativo do PP.Natural regeneration under reforestation of Araucaria angustifolia and Pinus sp. in Tunas do Paraná, PR, BrazilThis study aimed to assess the natural regeneration in stands of Araucaria angustifolia (PA) and Pinus sp. (PP) without management in Campinhos State Park, in the Municipality of Tunas do Paraná, Parana State, Brazil. Eighteen plots of 10 m2 were installed, 7 plots for PA and 11 for PP. All trees higher than 1.5 m were sampled and their circumference were measured at 1.30 m above ground level. In PA stand there were 586 individuals, corresponding to 67 species and 29 families and in PP stand 442 individuals of 58 species and 22 families were measured. The most important species in PA were Cordyline spectabilis, Lonchocarpus muehlbergianus and Clethra scabra; and in PP were C. spectabilis, Lonchocarpus sp.1 and Cupania vernalis. PA showed phytosociological parameters and diversity higher than PP. The floristic composition was similar for both stands, which denoted the regenerative potential of PP.Index terms: Native species; Forest plantation; Conservation unit

scholarly journals COMPOSIÇÃO FLORÍSTICA, DIVERSIDADE E ESTRUTURA DA VEGETAÇÃO ARBÓREO-ARBUSTIVA DE CAATINGA SOB SISTEMAS SILVICULTURAIS

Nativa ◽  
2018 ◽  
Vol 6 (5) ◽  
pp. 506
Author(s):  
Marcelo Silva de Lucena ◽  
Allyson Rocha Alves ◽  
Ivonete Alves Bakke
Keyword(s):  
Species Richness ◽  
Natural Regeneration ◽  
Forest Restoration ◽  
Crop Residues ◽  
Structural Parameters ◽  
Floristic Composition ◽  
Annual Increment ◽  
Regeneration Time ◽  
Complete Restoration ◽  
Absolute Dominance

O presente artigo visou investigar a composição florística, diversidade e parâmetros estruturais proporcionados por quatro sistemas silviculturais à vegetação arbóreo-arbustiva de Caatinga em dois locais contíguos. Um deles está localizado na Estação Ecológica do Seridó (EES); o outro na Fazenda Pedro Cândido (FPC); os dois situados em Serra Negra do Norte-RN. Os sistemas silviculturais foram: corte raso; corte seletivo (diâmetro na base – DNB > 8 cm); corte raso com queima dos resíduos da colheita; corte raso com queima dos resíduos da colheita e destoca do caule. Mediu-se em cada área 16 parcelas, com inclusão de indivíduos com CAP>6 cm. Determinou-se: composição florística, riqueza de espécies, diversidade, densidade de fustes, dominância absoluta, IP e IMA (1989-2016). Comparou-se a diversidade (J’) pelo teste de Tukey (P < 0,05). A riqueza de espécies apresentou condições semelhantes às da época da instalação do experimento. A grande abundância de algumas espécies contribuiu para a redução da diversidade medida pelo Índice de Shannon-Weaver, em relação a 1989. Os incrementos proporcionados pelos sistemas silviculturais variaram conforme a área, com tendência de redução do ritmo de crescimento em ambas. O tempo de regeneração (27 anos) não foi suficiente para a restauração integral da dominância absoluta.Palavras-chave: estrutura florestal, restauração florestal, regeneração natural, semiárido. FLORISTIC COMPOSITION, DIVERSITY AND STRUCTURE OF SHRUB-ARBOREAL VEGETATION OF CAATINGA UNDER SILVICULTURAL SYSTEMS  ABSTRACT:This work aimed to investigate the floristic composition, the diversity and structural parameters provided by four silvicultural systems to arboreal-shrub vegetation in two areas Caatinga. The first area is in the Seridó Ecological Station (SES) and the second is on Pedro Cândido Farm (PCF), in the county of Serra Negra do Norte-RN. The silvicultural systems used were: general cut; selective cut of individuals with base circumference > 8 cm; general cut of all individuals and subsequent burning of crop residues; general cut with subsequent burning of crop residues and removal of stem from soil. It was determined: floristic composition, species richness, diversity, density of stems, absolute dominance, periodic increase and average annual increment (1989-2016). The diversity (J ') was compared by Tukey's test (P < 0,05). The species richness presented conditions similar to those at the time of the installation of the experiment. The greater abundance of some species contributed to the reduction of diversity measured by the Shannon-Weaver Index, in relation to 1989. The increases provided by silvicultural systems varied according to the area, with tendency to reduce of rate the growth in both. The regeneration time (27 years) was not sufficient for the complete restoration of absolute dominance.Keywords: forestry structure, forest restoration, natural regeneration, semiarid.

scholarly journals Natural Regeneration in Urban Fragment of Atlantic Forest, Pernambuco, Brazil

2020 ◽  
pp. 66-79
Author(s):  
Débora de Melo Almeida ◽  
Leandro Dias de Lima ◽  
Paulo César da Silva Santos ◽  
Jeniffer Michele Pezzoti ◽  
Iara Cristina Araujo Rocha ◽  
...  
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Natural Regeneration ◽  
Native Species ◽  
Elaeis Guineensis ◽  
Intermediate Stage ◽  
Systematic Sampling ◽  
Ecological Group ◽  
Importance Value ◽  
Shannon Diversity

Aims: Evaluate the phytosociological structure of natural regeneration, the ecological group and the species dispersion syndrome in an urban fragment of the Atlantic Forest, Pernambuco, Brazil. Study Design: Systematic sampling. Place and Duration of Study: Immaculate Catholic College Conceição do Recife (FICR), in the municipality of Recife, PE, in August 2019. Methodology: In the survey, 10 plots of 5 m x 5 m were sampled, and all living individuals with height ≥ 1 m and circumference at 1.30 m from the soil were sampled < 15 cm. The structure of natural regeneration was analyzed based on phytosociological parameters and distribution of individuals in height classes. Species diversity was estimated using the Shannon diversity and Pielou equability indices. Results: We sampled 236 individuals, belonging to 26 species. The estimated density and dominance were 9,940 ind.ha-1 and 5.27 m2.ha-1, respectively. The families with the highest species richness were Fabaceae, Myrtaceae and Bignoniaceae. The species that stood out when considering density, frequency, dominance, importance value and natural regeneration were Protium heptaphyllum, Eschweilera ovata, Casearia javitensis, Brosimum guianense, Handroanthus sp.1, Xylopia frutescens, Thyrsodium spruceanum and Myrciaria ferruginea, being considered well adapted, showing efficiency in the development and establishment of new individuals. The Elaeis guineensis it was also among those that stood out the most, and it was necessary to monitor and control, because it is an invasive alien species. The indices of Shannon diversity and Pielou equability were 2.56 nats.ind.-1 and 0.76, respectively. In the area, the initial secondary species with zoochoric dispersal syndrome predominated. The distribution of the number of individuals for height classes occurred in the following order: C3 > C1 > C2. Conclusion: The area is in the intermediate stage of ecological succession, with moderate species richness. It is necessary to monitor the area, aiming at the control of the species Elaeis guineensis and native species with low natural regeneration.

Forest ecological restoration using native species in the North-West of Tunisia: a brand new experience of participatory approach.

2019 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Issam Touhami ◽  
Ali El khorchani ◽  
Zouheir Nasr ◽  
Mohamed tahar Elaieb ◽  
Touhami Rzigui ◽  
...  
Keyword(s):  
Ecological Restoration ◽  
Native Species ◽  
Participatory Approach ◽  
North West ◽  
The North

Systemic School Improvement Interventions in South Africa

2014 ◽  
Keyword(s):  
School Improvement ◽  
South African ◽  
Rural Areas ◽  
Eastern Cape ◽  
North West ◽  
Household Level ◽  
The North ◽  
Improvement Interventions ◽  
Academic Review

Looking at two smaller-scale systemic school improvement projects implemented in selected district circuits in the North West and Eastern Cape by partnerships between government, JET Education Services, and private sector organisations, this book captures and reflects on the experiences of the practitioners involved. The Systemic School Improvement Model developed by JET to address an identified range of interconnected challenges at district, school, classroom and household level, is made up of seven components. In reflecting on what worked and what did not in the implementation of these different components, the different chapters set out some of the practical lessons learnt, which could be used to improve the design and implementation of similar education improvement projects. Many of the lessons in this field that remain under-recorded to date relate to the step-by-step processes followed, the relationship dynamics encountered at different levels of the education system, and the local realities confronting schools and districts in South Africa's rural areas. Drawing on field data that is often not available to researchers, the book endeavours to address this gap and record these lessons. It is not intended to provide an academic review of the systemic school improvement projects. It is presented rather to offer other development practitioners working to improve the quality of education in South African schools, an understanding of some of the real practical and logistical challenges that arise and how these may be resolved to take further school improvement projects forward at a wider district, provincial and national scale.

MORE ON THE QUESTION OF RURAL AREAS MULTIFUNCTIONALITY

2020 ◽  
Vol 10 (10) ◽  
pp. 2397-2415
Author(s):  
A.I. Kostyaev ◽  
◽  
S.B. Letunov ◽  
Keyword(s):  
Rural Areas ◽  
Agricultural Production ◽  
Production Functions ◽  
North West ◽  
The North ◽  
Regional Markets ◽  
Specially Protected Natural Areas ◽  
Protected Natural Areas ◽  
Market Perception ◽  
Market Consequences

The approaches of Russian and foreign scientists to studying rural areas multifunctionality differ significantly. Domestic researchers consider this problem from the standpoint of public goods in agricultural production, agricultural production diversification, rural population livelihoods, land use, and sustainable development of rural areas. In all cases, we are talking about implementation of functions within rural areas without raising the question of buying and selling their intangible attributes. In foreign publications, two pragmatic approaches are seen within the concept of multifunctionality. The first approach is the market perception of rural areas as consumer spaces. In this case, the intangible attributes of the territories (landscape, nature, heritage or culture) are considered as a sold and bought product. The second approach is an approach from the standpoint of protection against negative market consequences in international food trade. The non-productive functions of agriculture are taken into account in the WTO negotiations as non-trade factors. This helps to protect the agriculture of many countries from the destructive effects of foreign trade. The article proposes to move from staged studies of the issue of multifunctionality to a constructive consideration of the material and non-material potential for implementing the rural areas' production and non-production functions. The purpose of the study is to determine the material and non-material basis of rural areas multifunctionality using the example of the North-West of Russia. The objectives of the study are to establish the capabilities of rural areas to perform their functions of: a) the international, b) the federal, c) the regional and d) the local significance; and on the basis of the idea of multifunctionality, to determine the ways for creating consumer spaces in rural areas. The following methods were used: decomposition of goals, the index one, the monographic and the grouping method. We used the materials by: Rosstat, Ministry of Natural Resources of Russia, Ministry of Culture of Russia. Municipal areas with the orientation of agricultural products to the international, federal and regional markets have been identified. The characteristic of intangible attributes - the carriers of non-production functions of rural areas for the international, federal, regional and local levels - was given. The objects of specially protected natural areas and objects of cultural heritage are considered in accordance with their level of importance. The sequence of forming the consumer spaces in rural areas has been established in the direction from defining a geographical image through creating an image to developing a brand.

scholarly journals Evaluation of wood properties from six native species of forest plantations in Costa Rica

2016 ◽  
Vol 37 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Carolina Tenorio ◽  
Róger Moya ◽  
Cynthia Salas ◽  
Alexander Berrocal
Keyword(s):  
Costa Rica ◽  
Native Species ◽  
Wood Properties ◽  
Forest Plantations

scholarly journals Natural Regeneration After Gold Mining in the Peruvian Amazon: Implications for Restoration of Tropical Forests

2021 ◽  
Vol 4 ◽  
Author(s):  
Roger Chambi-Legoas ◽  
Daigard Ricardo Ortega Rodriguez ◽  
Francisco de Marques de Figueiredo ◽  
Joel Peña Valdeiglesias ◽  
Percy Amílcar Zevallos Pollito ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Natural Regeneration ◽  
Forest Restoration ◽  
Gold Mining ◽  
Forest Recovery ◽  
Regeneration Process ◽  
Peruvian Amazon ◽  
Secondary Species ◽  
Number Of Species ◽  
Madre De Dios

Context: Gold mining is the most destructive activity in the natural forests of the Madre de Dios region in the southeastern Peruvian Amazon. Understanding the natural regeneration process of these degraded areas is necessary to develop forest restoration projects in such conditions.Aims: We aimed to evaluate forest recovery and identify the successional and structure patterns of vegetation governing natural regeneration over time.Methods: Structure, composition, richness, diversity, and successional status were evaluated in abandoned artisanal gold mine areas in Madre de Dios, southeastern Peru. Vegetation data were recorded in 61 plots of 250 m2 established in five sites varying from 1 to 19 years of abandonment. Vegetation in abandoned areas was compared with six undisturbed forests evaluated in previous inventories.Results: In the mining lands, tree density and basal area recovered quickly, while species richness and composition were slow. Forest recovery is an initial stage of transition from pioneer to early secondary species until at least 19 years after abandonment. The most abundant and frequent species were the fast-growing species Ochroma pyramidale and Cecropia engleriana. These species could be considered potential candidates to promote restoration plans. Pioneer species represented 63% of the number of species in plots of 1–4 years, 57% in plots of 5–7 years, and 50% in plots of 8–19 years. Early and late secondary species represented 34 and 16%, respectively, of the number of species in plots of 8–19 years. Abandoned mining and reference plots present less than 5% of species in common.Conclusion: Our results highlight a slow natural regeneration process in areas for up to 19 years after gold mining. Species from different successional statuses were identified as potential candidates for recovering vegetation in such areas. Our findings may have important implications for further research focusing on the ecological restoration in tropical forests severely degraded by gold mining.

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