scholarly journals O COMPONENTE ARBÓREO-ARBUSTIVO DE UM REMANESCENTE DE FLORESTA COM ARAUCÁRIA NO MUNICÍPIO DE CURITIBA, PARANÁ

FLORESTA ◽  
2010 ◽  
Vol 40 (3) ◽  
Author(s):  
Marlon Selusniaki ◽  
Luiz Antonio Acra

Foi feito um levantamento das árvores e arbustos de um remanescente de Floresta Ombrófila Mista, localizado no Bosque da Fazendinha, município de Curitiba, PR, no período de 2004 a 2009, com o objetivo de descrever a composição florística e sua distribuição na área de estudo. Foram registradas 147 espécies, distribuídas em 48 famílias entre angiospermas e gimnospermas. Dentre as Angiospermas, destacaram-se como as mais diversas as famílias Myrtaceae (18), Fabaceae (12), Lauraceae (10) e Asteraceae (nove). As gimnospermas estão representadas apenas por duas famílias, Araucariaceae e Podocarpaceae, cada uma com apenas uma espécie. Foi encontrada expressiva diversidade de espécies apesar desta formação estar situada em área urbana e estar sujeita a pressões de diferentes níveis.Palavras-chave: Floresta Ombrófila Mista; floresta com araucária; florística. Abstract The tree and shrubs compound of a forest remnant with araucaria in Curitiba, Paraná. A floristic survey of trees and shrubs was carried out in the remnants of an Araucaria forest in the 2004-2009 periods, located in the “Bosque da Fazendinha”, municipality of Curitiba, Paraná, Brazil, in order to describe the floristic composition and distribution in the study area. A total of 147 species, belonging to 48 families of angiosperms and gymnosperms, were found. Within the Angiosperm group, the most diverse families were Myrtaceae (18), followed by Fabaceae (12), Lauraceae (10) and Asteraceae (9). Gymnosperms were represented by only two families and Araucariaceae and Podocarpaceae byh only one species each. A highly significant diversity in species was observed, even though the formation is located in an urban area and therefore subject to different levels of stress.Keywords: Mixed Ombrophyllous Forest; araucarian forest; floristic.

Check List ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 1494
Author(s):  
Luciana Beatriz Gnigler ◽  
Mayara Krasinski Caddah

A floristic survey was carried out in a contact area between Araucaria Forest and Seasonal Forest areas, in the municipality of Guaraciaba, Far West of Santa Catarina state, southern Brazil. We provide a checklist containing 108 species and 42 plant families for the area. Families with the most encountered number of species were Myrtaceae (eight species), Solanaceae (eight), Euphorbiaceae (seven) and Poaceae (six). Two species are classified as endangered of extinction, following IUCN criteria. An analysis using UPGMA algorithm and species composition comparisons using additional 6 areas of Araucaria Forest and 6 areas of Seasonal Forest showed its greater relationship to other Araucaria Forest areas, but also the influence of the adjacent Seasonal Forest areas in the floristic composition of the surveyed area.


2017 ◽  
Vol 7 (4) ◽  
pp. 51-55
Author(s):  
S. A. Abiev ◽  
S. A. Aipeisova ◽  
N. A. Utarbaeva

<p>The purpose of our work is to assess the health state of woody plants growing in different habitats of the city of Aktobe. We have studied the health state of arboreal and shrubby plants growing in various urban habitats; the survey was conducted during 2016-2017 by route-visual method. We performed the analysis of species diversity, abundance and density in urban area. The assessment of health state of the trees was made according to V.A. Alekseev. From your data and literature review we established that such species as Ulmus pinnato-ramosa, Acer negundo, Populus tremula, Populus nigra, and Syringa vulgaris have strong winter resistnce in the territory of Aktobe; we registered that only their apex buds and emds of the shoots were frozen in severe winters. The medium-resistant speices include Ulmus laevis and Acer platonoides. They are less plastic and suffer from late spring and early autumn frosts. The Amorpha fruticosa, Vitis vinifera, and Parthenocissus guinguefolia could be considered as the non-resistant species, since they usually freeze up to the snow cover line. The analysis of the vital state made it possible to assess the resistance to urban conditions of the majority of trees and shrubs registered in urban habitats of Aktobe. According to the preliminary data, the origin of the plant and its winter resistance are of main importance when introducing new species to urban area.</p>


2020 ◽  
Vol 324 (3) ◽  
pp. 364-370
Author(s):  
B.S. Tuniyev ◽  
L.M. Shagarov ◽  
O.J. Arribas

Podarcis siculus (Rafinesque-Schmaltz, 1810) or Italian wall lizard is one of the most invasive reptile-species. Recently, this lacertid lizard has been introduced to Mediterranean areas of southern Europe, South-West Asia (Turkey) and North America (USA). An abundant population of P. siculus was discovered on one of the sites of the Natural Ornithological Park in the Imeretinskaya Lowland, on an area of over 0.22 km2 (Sochi, Russia). The data were collected in the May of 2020 in a strip survey method in the Imeretinskaya Lowland. To identify the colonization area of the invader, we examined all 8 sections of the Natural Ornithological Park in the Imeretinskaya Lowland and adjacent urbanized areas. More than 150 animals were observed. These Italian wall lizards, undoubtedly, belong to the northern-central Italian morphotype (presumably P. s. campestris). This is the first record of this species in the former USSR area and, also, this is the species’ north-easternmost locality. The population inhabits secondary natural biotopes and urban area. Among them are the banks of artificial water bodies, areas with cultivated trees and shrubs, as well as parks, and house lawns in the urban area. Population density was estimated from eight to 40 specimens per 100 m of the transect. A moderate proportion of young specimens (more than a 40%) would indicate a healthy and continued growth of the emerging population. To determine the possible period of the species introduction, space images of the Imeretinskaya Lowland were analyzed beginning from the transformation of its landscape for the Winter Olympic Games of Sochi 2014 until the May of 2020. The introduction of the species presumably occurred with the delivery of large-sized ornamental trees and shrubs from Italy in 2012–2013. Podarcis siculus should be included in the list of herpetofauna of Russia and particularly of the Caucasus. This is an alien species with a proven ability to become an invasive species, what will lead to a greater undesirable and unavoidable contact with native small lizards of the genus Darevskia Arribas, 1997. On the other hand, as it is often observed with new invaders, a sudden rise in population abundance could be followed by a sharp decline. A continuous monitoring of the area in question and of the number of local Italian wall lizards is necessary to confirm or refute the assumed scenarios of further invasion of P. siculus on the Black Sea Coast of the Caucasus. Further action plans for this population should be developed depending on supposed future trends.


FLORESTA ◽  
2015 ◽  
Vol 45 (3) ◽  
pp. 497
Author(s):  
Silvana Manfredi ◽  
Juliano Pereira Gomes ◽  
Paula Iaschitzki Ferreira ◽  
Roseli Lopes da Costa Bortoluzzi ◽  
Adelar Mantovani

A busca do conhecimento sobre a expansão das florestas em relação aos ecossistemas associados (campestre e banhado) aborda a presença de fatores ambientais como o fogo e o pastejo, frequentemente descritos como determinantes dos processos ecológicos favoráveis à dinâmica sucessional. Dessa forma, objetivou-se verificar se existem diferenças na composição florística do interior de fragmentos florestais e entre setores de transição floresta-campo e floresta-banhado, bem como identificar espécies indicadoras para cada um desses ambientes. O estudo foi realizado em fragmentos florestais situados nos municípios de Bom Jardim da Serra e Lages (Coxilha Rica), onde foram instaladas duas parcelas permanentes de 50x50 m, subdivididas em setores de 10x10 m, categorizados em três setores: Floresta Ombrófila Mista, transição floresta x campo e transição floresta x banhado. Há dissimilaridade florística entre os fragmentos florestais dos locais e, também, entre os setores de transição (ecótonos). As espécies indicadoras dos ecótonos estão vinculadas ao estágio inicial da sucessão florestal, apresentando potencial para colonização do campo, podendo atuar no início do processo de expansão da fronteira florestal.AbstractFloristic dissimilarity and indicator species of Araucaria Forest and ecotones. The search for knowledge about the expansion of forests in relation to associated ecosystems (native grassland and wetland) addresses the presence of environmental factors such as fire and grazing, often described as determinants of ecological processes in favor of succession dynamics. The objective here was to verify if there are differences among the floristic composition of the interior of forest fragments and transition sectors of forest-native grassland and forest-wetland, as well as to identify indicator species for each of these environments. The research was conducted in forest fragments located in the municipalities of Bom Jardim da Serra and Lages (Coxilha Rica), SC, where we installed two permanent plots of 50x50 m, subdivided into sectors of 10x10 m categorized into three sectors: Araucaria Forest, forest transition x native grassland and forest x wetland transition. There is floristic dissimilarity between the local forest fragments and also between the transition areas (ecotones). The indicator species of ecotones are linked to early stages of forest succession, with potential for colonization of the field, they can operate in the start of the expansion of the forest boundary process.Keywords: Araucaria Forest; native grassland; wetland; succession.


2016 ◽  
Vol 34 (1) ◽  
pp. 65-80 ◽  
Author(s):  
SANTOS W.F. ◽  
PROCÓPIO S.O. ◽  
SILVA A.G. ◽  
FERNANDES M.F. ◽  
BARROSO A.L.L.

The use of the Roundup Ready(r) technology and the cultivation of a second crop influence the floristic composition of weed communities in Brazilian Central-West region cropping systems. This study has aimed to diagnose the dominant weed species in southwestern Goiás in areas of genetically-modified and conventional soybeans, using phytosociological and floristic surveys. Weed sampling was obtained by collecting all the plants present within a 0.5 m hollow frame, randomly thrown 20 times in each of thirty-five agricultural areas in the 2012/2013 harvest. Field survey was carried out in three periods: before desiccation for soybean sowing, before postemergence herbicide in soybean first application and before postemergence herbicide application in late harvest. A total of 525 m2 was inventoried and 3,219 weeds were collected, which included 79 species, 58 genera and 28 families. Families Poaceae, Asteraceae, Euphorbiaceae, Fabaceae, Amaranthaceae, were the most representative in the survey. Species Cenchrus echinatus, Glycine max, Chamaesyce hirta, Commelina benghalensis, and Alternanthera tenella stood out in importance. The RR+millet soybean treatment had the highest number of species (44), while the conventional soybean + sorghum treatment had the lowest number of species (18). The highest number of species was recorded in first sampling period. Treatments conventional soybean + maize and conventional soybean + millet showed higher similarity (70%), while treatments RR soybean + millet and conventional soybean + sorghum showed the least (51%). Species of difficult control were recorded in all cultivation systems analyzed.


Hoehnea ◽  
2020 ◽  
Vol 47 ◽  
Author(s):  
Libia Mayerly Cifuentes-García ◽  
Pedro Bond Schwartsburd ◽  
Denilson Fernandes Peralta

ABSTRACT The objective was to present the floristic survey of the bryophytes of the Parque Estadual da Serra do Brigadeiro. It included an evaluation of the species richness, as well as information about the substrate preference of each species and its geographic distributions in Brazil. We found 208 taxa of bryophytes: one hornwort, 88 liverworts and 119 mosses. This richness represents ca. 26% of the bryoflora of Minas Gerais State and ca. 13% of that known for Brazil. Eighteen of the bryophytes species are endemic to Brazil, whereas 19 species are recorded for the first time in Minas Gerais. The bryoflora showed preference for tree bark (30%) and rock (23%) as substrates. Our data show that the Parque Estadual da Serra do Brigadeiro is an important area for the diversity conservation of Brazilian bryophytes and maintenance of endemic species of the country.


Check List ◽  
2016 ◽  
Vol 12 (3) ◽  
pp. 1891
Author(s):  
Álisson Sobrinho Maranho ◽  
Cleber Ibraim Salimon ◽  
Daniel Da Silva Costa

Abstract: Forest gaps, created by the falling of one or more trees, have been seen as a key factor for the maintenance of local plant diversity in tropical forests. In this study, our goal was to determine the floristic composition of woody plants colonizing natural gaps and in the understory of an open, bamboo-dominated (Guadua weberbaueri Pilg.) forest in southwestern Amazonia, Acre, Brazil. We sampled and identified woody plants (≥1 m tall and DBH≤10 cm) in 20 forest gaps and nine adjacent understories. In total, 1656 plants were identified in 159 species, 116 genera and 45 families. A list of species was created, containing habitat, habit, functional group, threat status (Brazilian Flora Red List) and abundance data for each species.


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

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.


Check List ◽  
2015 ◽  
Vol 11 (5) ◽  
pp. 1771 ◽  
Author(s):  
Rafael Fernando da Silva Possete ◽  
Sandra Bos Mikich ◽  
Gerdt Guenther Hatschbach ◽  
Osmar Dos Santos Ribas ◽  
Dieter Liebsch

This study was conducted in Araucaria Forest remnants in the municipality of Colombo, eastern Paraná state, Brazil. Data on species occurrence, life forms and dispersal syndromes were collected once a week along a 9 km transect, revealing the presence of 512 species among trees (n = 135), shrubs (n = 121), herbs (n = 157), climbers (n = 70), epiphytes (n = 24) and hemiparasites (n = 5). Of 469 species classified according to dispersal syndromes, 42.4% were zoochoric, 33.6% autochoric and 23.8% anemochoric. The high richness observed, the highest among similar studies previously conducted in the Araucaria Forest, along with the occurrence of endangered species of trees (and mammals), indicates that the study area is an important remnant for biodiversity conservation.


FLORESTA ◽  
2011 ◽  
Vol 41 (4) ◽  
Author(s):  
Marilia Borgo ◽  
Gilberto Tiepolo ◽  
Marcelo Reginato ◽  
Yoshiko Saito Kuniyoshi ◽  
Franklin Galvão ◽  
...  

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.


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