Floristic composition and vertical zonation of epiphytic bryophytes in Dense Montane Ombrophilous Forest in southern Brazil

2018 ◽  
Vol 121 (4) ◽  
pp. 547
Author(s):  
Emanuelle Lais dos Santos ◽  
Hermeson Cassiano de Oliveira ◽  
Denilson Fernandes Peralta
Keyword(s):  
Floristic Composition ◽  
Southern Brazil ◽  
Vertical Zonation ◽  
Ombrophilous Forest

scholarly journals Dynamics of natural regeneration after disturbance in a remnant of Mixed Ombrophilous Forest in southern Brazil

2021 ◽  
Vol 16 (3) ◽  
pp. 1
Author(s):  
Alyne Regina Ruggiero ◽  
Lauri Amândio Schorn ◽  
Kristiana Fiorentin dos Santos ◽  
Tatiele Anete Bergamo Fenilli
Keyword(s):  
Natural Regeneration ◽  
Floristic Composition ◽  
Ecological Groups ◽  
Pioneer Species ◽  
Southern Brazil ◽  
Forest Fragment ◽  
Healing Phase ◽  
Successional Species ◽  
Ombrophilous Forest ◽  
Over 40 Years

This study evaluated changes in the structure for remnant Mixed Ombrophilous Forest recovering from logging, which ceased over 40 years ago. Regarding the dynamics of the floristic composition of natural regeneration, 18 species remained (23.38% of the total) and 27 new species entered (35.06% of the total). The greatest increases were observed for Allophylus edulis, Myrsine umbellata, and Miconia cinerascens. When analyzing the dynamics of regeneration in ecological groups, it was observed that pioneer species had a similar value in both surveys (29.4% and 29.6%); secondary species decreased from 56.6% to 52.8%, and late-successional species increased from 0.2% to 6.0%. Therefore, the forest fragment studied is in a healing phase after disturbance, characterized by the increased regeneration of pioneer species as a result of sufficient light entering the interior of the forest.

scholarly journals MORFOLOGIA DE DIÁSPOROS E PLÂNTULAS DE ESPÉCIES ARBÓREAS DA FLORESTA COM ARAUCÁRIA, NO SUL DO BRASIL

FLORESTA ◽  
2015 ◽  
Vol 45 (4) ◽  
pp. 819 ◽  
Author(s):  
Alessandra Mara Gogosz ◽  
Maria Regina Torres Boerger ◽  
Nelson Luiz Cosmo ◽  
Antônio Carlos Nogueira
Keyword(s):  
Functional Morphology ◽  
Tree Species ◽  
Morphological Characterization ◽  
Seedling Stage ◽  
Functional Ecology ◽  
Pioneer Species ◽  
Southern Brazil ◽  
Araucaria Forest ◽  
Secondary Species ◽  
Ombrophilous Forest

Neste estudo foram caracterizados morfologicamente frutos, sementes e plântulas de espécies da Floresta com Araucária (Floresta Ombrófila Mista), visando entender as estratégias de estabelecimento de diferentes grupos ecológicos. Frutos de 18 espécies arbóreas foram coletados na região de Curitiba, Paraná. As sementes foram semeadas em vermiculita e mantidas em laboratório, até a fase de plântula. Nas espécies pioneiras predominam frutos secos, deiscentes, sementes exalbuminosas, pequenas, com estruturas que favorecem a dispersão anemocórica e plântulas com cotilédones finos, foliáceos com tricomas. Nas secundárias tardias os frutos são carnosos com dispersão zoocórica, as sementes são albuminosas e as plântulas possuem cotilédones crassos, foliáceos, e, em alguns casos, também com função de reserva. Nas secundárias iniciais, as características são variáveis. A caracterização morfológica realizada dá subsídio, no contexto da ecologia funcional, à interpretação das diferentes estratégias de estabelecimento das espécies.AbstractMorphology of diaspore and seedling of tree species of the Araucaria forest (Subtropical Ombrophilous Forest) in southern Brazil. This study characterized morphologically the fruits, seeds and seedlings of species of Araucaria Forest, aiming to understand the strategies of establishing different successional groups. Therefore, fruits of 18 tree species were collected in Curitiba, Paraná. Then the seeds were sown in vermiculite and remained in the laboratory until the seedling stage. The pioneer species have predominantly dehiscent dry fruits, unalbuminous seeds, small structures that favor anemochoric dispersal and seedlings with thin cotyledons, foliaceous with trichomes. In late secondary species the fruits are fleshy with zoochorous dispersal, seeds are albuminous and seedlings present fleshy cotyledons, foliaceous, and in some cases also reserve function. In the early secondary species, the characteristics are variable. Morphological characterization allows the interpretation of functional ecology, the different strategies of establishment of species.Keywords: Succession groups; establishment; functional morphology; Mixed Ombrophilous Forest.

scholarly journals COMPARAÇÃO DA EFICÁCIA DE TÉCNICAS DE NUCLEAÇÃO PARA RESTAURAÇÃO DE ÁREA DEGRADADA NO SUL DO BRASIL

FLORESTA ◽  
2013 ◽  
Vol 43 (1) ◽  
pp. 39 ◽  
Author(s):  
Suzane Bevilacqua Marcuzzo ◽  
Gislene Ganade ◽  
Maristela Machado Araújo ◽  
Marlove Fátima Brião Muniz
Keyword(s):  
Efficient Method ◽  
Natural Regeneration ◽  
Abiotic Factors ◽  
Floristic Composition ◽  
Southern Brazil ◽  
Porto Alegre ◽  
Urban Centers ◽  
Degraded Area ◽  
Exotic Vegetation ◽  
Remnant Forest

O desenvolvimento de grandes centros urbanos em áreas naturais resultou na supressão e degradação de florestas. A fim de obter ferramentas para implantação de programas de restauração nessas áreas, este estudo teve como objetivo avaliar a eficiência de diferentes técnicas nucleadoras sobre os fatores bióticos e abióticos que limitam a regeneração natural, em uma área degradada em remanescente de floresta, no perímetro rural-urbano de Porto Alegre, RS, Brasil. O experimento foi conduzido em blocos inteiramente casualizados, em esquema fatorial, composto pelos seguintes tratamentos: Controle (C), Transposição de Solo (TS), Resíduos da Arborização Urbana Triturados (RT), Transposição de Solo misturado aos Resíduos da Arborização Urbana Triturado (TS+RT) e Poleiros Artificiais. Durante 12 meses, foi avaliada a abundância e riqueza de plântulas estabelecidas, e por sete meses, a chuva de sementes em coletores. Os resultados indicam que a transposição de solo foi o método mais eficiente para restauração da área degradada em estudo. Adicionalmente, a utilização de poleiros artificiais se mostrou eficiente, indicando tendência de aumento da riqueza florística e de sementes dispersas. No entanto, a vegetação exótica da área urbana apresentou forte influência na composição florística, cuja sucessão terá trajetória diferente da vegetação original.Palavras-chave: Nucleação; poleiros artificiais; arborização urbana; transposição de solo.AbstractComparison of nucleation techniques effectiveness for degraded area restoring in Southern Brazil. The development of large urban centers in natural areas resulted in abolition and degradation of forests. In order to obtain tools for restoring programs development in such areas, this study aimed to evaluate efficiency of different nucleus techniques in relation to biotic and abiotic factors which limit natural regeneration in a depressed area of remnant forest in rural-urban perimeter of Porto Alegre, RS, Brazil. The experiment was conducted in randomized blocks, in factorial disposition, composed of the following treatments: Control (C), Transposition of Soil (TS), crushed waste of urban afforestation (RT), Transposition of soil mixed to crushed waste of urban afforestation (TS+RT), and artificial perches. During 12 months,  abundance and richness of seedlings laid down were evaluated and for seven months the seed rain in sinks. Results point that the soil transposition was the most efficient method for restoration of the degraded area. Additionally, artificial perches using proved to be efficient, pointing to wealth increase trend and floristic wealth of dispersed seeds. However, the exotic vegetation of the urban area has strong influences on floristic composition, whose succession will have different trajectory of original vegetation.Keywords: Artificial perches; nucleation; urban afforestation; soil transposition. 

scholarly journals Floristic composition of the Seasonal Semideciduous Forest in Southern Brazil: Reserva Biológica das Perobas, State of Paraná

2018 ◽  
Vol 40 (1) ◽  
pp. 35753
Author(s):  
Greta Aline Dettke ◽  
Laianne Mayara Pezenti Crespão ◽  
Luciana Veríssimo Siquerolo ◽  
Edemilson Luiz Siqueira ◽  
Marcelo Galeazzi Caxambú
Keyword(s):  
Floristic Composition ◽  
Southern Brazil ◽  
Semideciduous Forest ◽  
Seasonal Semideciduous Forest

scholarly journals MORPHOFUNCTIONAL ECOLOGY OF SEEDLINGS FOUND IN A TROPICAL RAINFOREST SEED BANK, IN THE NORTHEAST OF BRAZIL

FLORESTA ◽  
2021 ◽  
Vol 51 (3) ◽  
pp. 614
Author(s):  
Joselane Príscila Gomes Da Silva ◽  
Luiz Carlos Marangon ◽  
Ana Lícia Patriota Feliciano ◽  
Rinaldo Luiz Caraciolo Ferreira
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Floristic Composition ◽  
Average Density ◽  
Shade Cloth ◽  
Forest Remnant ◽  
The Family ◽  
Polyethylene Bags ◽  
And Gender ◽  
Ombrophilous Forest

The aim of this study was to evaluate the identification and floristic composition of seedlings of tree species, located in the soil seed bank of a remnant of the Dense Ombrophilous Forest of the Lowlands, in the Northeast of Brazil, from a morphofunctional ecology standpoint. A hundred and fifty two soil samples (0.2 m x 0.15 m x 0.05 m) were taken from a forest remnant, stored in polyethylene bags, identified and then taken to the Forest Nursery at the Federal Rural University of Pernambuco, where they were placed in polyethylene boxes under a 70% shade cloth and evaluated daily for a period of seven months. The seedlings emerged were photographed, separated into morphospecies, identified at the family and gender level and, when possible, at the species level. The density and absolute frequency, as well as the successional and morphological classification of the seedling cotyledons were estimated. In total, 1,577 seedlings of 31 morphospecies were cataloged. Melastomataceae was the family that presented the greatest richness, representing 48% of the species identified. The average density was 344.62 seeds.m-2, with higher densities for species of the family Melastomataceae, together with Maprounea guianensis and Cecropia palmata. There was a predominance of seedlings with epigeal and phanerocotylar germination, and with foliaceous cotyledons, corresponding to 93.56%. The seed bank was composed, predominantly, by pioneer species such as Cecropia palmata, Henriettea succosa, Miconia hypoleuca and Miconia tomentosa. Seedlings with epigeal germination, foliaceous and phanerocotylar cotyledons predominated for being easily established in more open areas.

scholarly journals Relações histórico - florísticas, fitossociologia e aspectos ecológicos do Alecrim (Holocalyx balansae Mich.) em floresta primária, na região de Formigueiro – RS

1993 ◽  
Vol 15 (15) ◽  
pp. 161
Author(s):  
Marcus V. Chamon Schmidt ◽  
José Newton Cardoso Marchiori ◽  
André R. Terra Nascimento ◽  
Adelino Alvarez Filho
Keyword(s):  
Reproductive Strategies ◽  
Floristic Composition ◽  
Climatic Changes ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Wood Extraction ◽  
Forest Genetic ◽  
Composition Structure ◽  
Floristic Data

The forests of the Depressão Central in the State of Rio Grande do Sul, are in an advanced process of fragmentation, as a consequence of the expansion of the agriculture area. These fragments are in different degrees of conservation due to selective wood extraction and the action the cattle reising. The lack of studies about floristic composition, structure, reproductive strategies of arboreal species and the fragmentation effects on ecosystems, turn impratical any practice that garantee the conservation of forest genetic resourses in situ. This work relies on results obtained in a fragment untouched in Formigueiro county. Floristic data presented here are inserted in the dynamic context of the southern Brazil vegetation, under the influence of climatic changes in the Quaternary, identifing the original flora and the recent features of these forests. The structural analysis detected the occurence of alecrim (Holocalyx balansae Mich), a specie that in spite of being rare in the Depressão Central, presented high density in the study area. Based on the results obtained in loco, we conclude that alecrim is characterisis itself as a climax specie and, therefore, vulnerable to fragmentation. These informations, although incomplete, is of great importance in the conservation of produtive characteristics of forest. The lack of it, turns impratical the permanence of these fragments in rural properties.

scholarly journals ESPÉCIES ARBÓREAS DE UM TRECHO DE FLORESTA ATLÂNTICA DO MUNICÍPIO DE ANTONINA, PARANÁ, BRASIL

FLORESTA ◽  
2011 ◽  
Vol 41 (4) ◽  
Author(s):  
Marilia Borgo ◽  
Gilberto Tiepolo ◽  
Marcelo Reginato ◽  
Yoshiko Saito Kuniyoshi ◽  
Franklin Galvão ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Threatened Species ◽  
Tree Species ◽  
Forest Type ◽  
Species Conservation ◽  
Floristic Composition ◽  
Forest Damage ◽  
Permanent Plots ◽  
Southern Brazil ◽  
Forest Remnant

Com o objetivo de subsidiar futuros estudos de dinâmica da vegetação e efeitos das mudanças climáticas, realizou-se um levantamento florístico do componente arbóreo em área de Floresta Ombrófila Densa da Reserva Natural do Rio Cachoeira, em Antonina, Paraná. O levantamento foi realizado em 187 parcelas permanentes, que representam 23,5 ha amostrados. Foram identificadas 306 espécies distribuídas em 68 famílias. A zoocoria foi a síndrome de dispersão mais comum (81,7% das espécies). Espécies tolerantes à sombra superaram discretamente as não tolerantes (50,3% e 49,7%, respectivamente). Espécies de distribuição geográfica ampla representaram quase metade do total (48,4%). Desse conjunto florístico, 21 espécies encontram-se sob alguma categoria de risco de extinção, o que representa 6,9% do universo encontrado, valor maior que o verificado na maioria dos estudos conduzidos nessa mesma formação (em torno de 2%). Essa situação reflete os efeitos da pressão contínua a que a floresta está sujeita, onde a superexplotação de essências nativas ao longo dos anos, associada à deterioração da floresta por meio da fragmentação e da perda de hábitats, resulta em maior risco à conservação de espécies do bioma.Palavras-chave: Floresta Ombrófila Densa; florística; espécies ameaçadas; síndromes de dispersão. AbstractTree species from an Atlantic Forest remnant in Antonina, Paraná, Southern Brazil. Aiming to support new vegetation dynamics and climate change studies, a floristic survey of the tree species was conducted in the Atlantic Forest at Rio Cachoeira Natural Reserve, in Antonina municipality, Southern Brazil. The survey was intensified in 187 permanent plots, representing 23.5 ha of sampled area. The floristic collection was represented by 306 tree species, distributed in 68 families. Zoochory was the most common dispersion syndrome (81.7%). According to the shadow tolerance, 50.3% of the species were tolerant, while non-tolerant species were 49.7%. Wide geographical distribution species represented almost half of all this floristic set (48.4%).Threatened species were 6.9% of all species found (21), a higher value than that one reported to other studies on this forest type (around 2%). This situation shows the effects of continuous pressure on the forest, as the over exploitation of the vegetation through the years, associated to the forest damage by fragmentation and habitat loss process leads to the higher risks for species conservation on this biome.Keywords: Ombrophilous Dense Forest; floristic composition; threatened species; dispersion ways.

scholarly journals Frog diversity in the Floresta Nacional de Chapecó, Atlantic Forest of southern Brazil

2008 ◽  
Vol 8 (3) ◽  
pp. 51-61 ◽  
Author(s):  
Elaine Maria Lucas ◽  
Vanessa Barbisan Fortes
Keyword(s):  
Atlantic Forest ◽  
Biological Diversity ◽  
Deciduous Forest ◽  
Management Strategies ◽  
The State ◽  
Southern Brazil ◽  
Santa Catarina ◽  
Rapid Destruction ◽  
South Of Brazil ◽  
Ombrophilous Forest

The Atlantic Forest is considered one of the world's biological diversity hotspots but is nevertheless increasingly threatened with the rapid destruction and fragmentation of its natural areas. In the state of Santa Catarina, southern Brazil, remnants of the mixed ombrophilous forest and seasonal deciduous forest exist as islands within large areas of agriculture, pastures and human settlements. Here we present information on species richness and habitat use by anurans in the Floresta Nacional de Chapecó, located in the western portion of the state of Santa Catarina. Anurans were surveyed by active search of potential reproductive sites from December 1998 to December 2001. A total of 29 species were recorded, most of which have a known distribution restricted to southern Brazil and adjacent countries (Argentina, Paraguay, and Uruguay) and use open areas for reproduction. The species composition was most similar to other areas of mixed ombrophilous forest and seasonal deciduous forest from the extreme south of Brazil. The information in this study may support the implementation of conservation and management strategies in the area.

scholarly journals Seasonality of macroalgal communities in a subtropical drainage basin in Paraná state, southern Brazil

2008 ◽  
Vol 68 (4) ◽  
pp. 741-749 ◽  
Author(s):  
CCZ. Branco ◽  
RA. Krupek ◽  
CK. Peres
Keyword(s):  
Drainage Basin ◽  
Seasonal Pattern ◽  
Linear Regression Analysis ◽  
Sampling Site ◽  
Temporal Distribution ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Distribution Patterns ◽  
Multiple Linear Regression Analysis ◽  
Southern Brazil

Seasonal dynamics of macroalgal communities was analyzed monthly by samplings in three stream segments of the Pedras River Basin, mid-south region of Paraná State, southern Brazil, from April 2004 to March 2005. The seasonal fluctuations in macroalgal species richness and abundance were correlated with selected environmental variables. In general, the seasonal distribution patterns of these communities were distinct from those reported from other tropical and temperate regions, with higher macroalgal richness and abundance observed from late spring to late fall. Multiple linear regression analysis revealed that the stream variable most closely related with the temporal distribution pattern observed was temperature, which had a very similar seasonal pattern to the biological parameters. On the other hand, the floristic composition was quite diverse in the streams sampled. Among the 25 taxa identified, only two were common to the three streams whereas 15 were restricted to a single sampling site. These data indicate that, although temperature seems to be an effective relationship with global temporal pattern, particular characteristics of each stream can strongly influence the seasonal tendencies in local scale. The results of Detrended Correspondence Analysis (DCA) and Cluster Analysis corroborated this observation.

scholarly journals Floristic composition of a Subtropical bog, Eastern Plateau from southern Brazil

Check List ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 224 ◽  
Author(s):  
Luis Rios de Moura Baptista ◽  
Maria Luisa Lorscheitter ◽  
Caroline Scherer
Keyword(s):  
Floristic Composition ◽  
Rio Grande ◽  
General Description ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Comprehensive List ◽  
Mode Of Occurrence ◽  
Taxonomic Groups

This is a comprehensive list of plants and fungi from a bog in the Southern Brazilian Plateau, which may be used as a reference for subtropical marsh flora investigations. The very well preserved bog named Banhado Amarelo (29°19’ S, 50°08’ W) is located on the eastern Plateau of Rio Grande do Sul, the southernmost state of Brazil. A total of 262 specific and infra-specific taxa were listed, including six macroscopic fungi, 10 lichens, 21 mat forming algae, 57 bryophytes, 12 pteridophytes, two gymnosperms and 154 angiosperms. For every taxon the mode of occurrence in the bog was indicated. The frequency of distinct taxonomic groups among themselves was determined and a general description of the flora of the main bog environments is presented. The number of taxa found in the bog was compared to those obtained in other surveys of bogs of the eastern Plateau from Rio Grande do Sul.

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