Abstract:RESUMO(Trepadeiras do Parque Estadual da Serra da Tiririca, Rio de Janeiro, Brasil) As trepadeiras têm alta representatividade em várias formações vegetais, correspondendo a cerca de 25% da diversidade taxonômica das florestas tropicais. Ainda assim, elas são mal representadas em levantamentos florísticos. Estudos na floresta ombrófila densa são raros e o presente trabalho vem contribuir para o conhecimento da flora de trepadeiras dessa formação vegetal. Foram feitas coletas no Parque Estadual da Serra da Tiri… Show more
“…The richest families sampled at FLONA-SFP are according to other surveys in the Atlantic forest of Southeast Brazil (Lima et al 1997, Barros et al 2009, Villagra & Neto 2010, but there is a clear predominance of Apocynaceae and Asteraceae families not only at FLONA-SFP but also in most sites of RS State. In Seasonal forests of Southeast Brazil , Udulutsch et al 2010, there is a predominance of species from Bignoniaceae, Fabaceae and Malpighiaceae families, in which the first two are also more representative in Seasonal forests of RS State.…”
Climbing plants are remarkable components of forests, highly contributing for the diversity and dynamics of communities. Studies focusing on climbing plants are scarce and for many vegetation types little is known about climbing species composition and their traits relevant for dispersal and establishment. The focus of this study is to provide the first floristic inventory of climbing plants in an Araucaria forest of Brazil, describing the dispersal syndromes and climbing mechanisms of species and comparing these traits and species composition patterns with other study sites in Southern Brazil. We found 104 taxa belonging to 33 families, with Asteraceae (22 spp.) and Apocynaceae (14 spp.) being the richest families. Among climbing mechanisms, stem twiner (50 spp.) is the most common, followed by tendril (20 spp.) and scrambler (12 spp.), while in relation to the dispersal syndromes, anemochoric species (65 spp.) are the most relevant followed by endozoochoric (28 spp.). Three new species registries were found for Rio Grande do Sul State expanding their occurrence range towards South Brazil. The comparison of climbers' survey sites showed two sharp groups in relation to species composition and traits proportion, Seasonal and Araucaria/Atlantic forest sites, but with no difference of traits frequency between sites. There is a predominance of stem twiners species in all sites, but the relative difference for tendril species increases in Araucaria and Atlantic forest sites. The Asteraceae and Apocynaceae families were the most relevant, contrasting to Seasonal forests of Southeast Brazil. Interesting patterns can be achieved with a more detailed classification of climbing mechanisms and the results found in this study contributes to enhance the knowledge on climbers' traits and diversity in South Brazil. Keywords: Lianas, Vines, Climbing mechanisms, Dispersal syndromes, Floristic of climbers.
SEGER
“…The richest families sampled at FLONA-SFP are according to other surveys in the Atlantic forest of Southeast Brazil (Lima et al 1997, Barros et al 2009, Villagra & Neto 2010, but there is a clear predominance of Apocynaceae and Asteraceae families not only at FLONA-SFP but also in most sites of RS State. In Seasonal forests of Southeast Brazil , Udulutsch et al 2010, there is a predominance of species from Bignoniaceae, Fabaceae and Malpighiaceae families, in which the first two are also more representative in Seasonal forests of RS State.…”
Climbing plants are remarkable components of forests, highly contributing for the diversity and dynamics of communities. Studies focusing on climbing plants are scarce and for many vegetation types little is known about climbing species composition and their traits relevant for dispersal and establishment. The focus of this study is to provide the first floristic inventory of climbing plants in an Araucaria forest of Brazil, describing the dispersal syndromes and climbing mechanisms of species and comparing these traits and species composition patterns with other study sites in Southern Brazil. We found 104 taxa belonging to 33 families, with Asteraceae (22 spp.) and Apocynaceae (14 spp.) being the richest families. Among climbing mechanisms, stem twiner (50 spp.) is the most common, followed by tendril (20 spp.) and scrambler (12 spp.), while in relation to the dispersal syndromes, anemochoric species (65 spp.) are the most relevant followed by endozoochoric (28 spp.). Three new species registries were found for Rio Grande do Sul State expanding their occurrence range towards South Brazil. The comparison of climbers' survey sites showed two sharp groups in relation to species composition and traits proportion, Seasonal and Araucaria/Atlantic forest sites, but with no difference of traits frequency between sites. There is a predominance of stem twiners species in all sites, but the relative difference for tendril species increases in Araucaria and Atlantic forest sites. The Asteraceae and Apocynaceae families were the most relevant, contrasting to Seasonal forests of Southeast Brazil. Interesting patterns can be achieved with a more detailed classification of climbing mechanisms and the results found in this study contributes to enhance the knowledge on climbers' traits and diversity in South Brazil. Keywords: Lianas, Vines, Climbing mechanisms, Dispersal syndromes, Floristic of climbers.
SEGER
“…Morfologicamente, P. mucronata é considerada uma trepadeira herbácea, com caule delgado não lenhoso; volúvel, que se enrosca de maneira espiralada em torno de um suporte; com órgão preensor que apresenta sensibilidade localizada na estrutura responsável pela aderência ao suporte (Barros et al, 2009). A espécie apresenta grande potencial ornamental, por suas inúmeras características morfológicas, acima citadas, além das observadas por Meletti et al (2011), como as flores brancas, fosforescentes, antese noturna, polinização feita por morcegos, floração intensa e quase contínua pelo ano todo.…”
Adventitious rooting of wild passionflower Passiflora mucronata Lam. cuttings: vehiculation ways and concentrations of indole-3-butyric acidPassiflora mucronata Lam. is an ornamental, medicinal plant and resistant to bacterial blight on leaves. In addition, it is highly resistant to anthracnose in fruits and branches. The objective of this study was to evaluate the vehicultaion way, liquid or solid, and concentrations of indole-3-butyric acid (IBA) on adventitious rooting of P. mucronatacuttings. The experiment was carried out in a randomized block design in a 2x5factorial design (IBA vehiculation ways: liquid and solid x IBA concentrations: 0; 250; 500; 750 and 1000 mg L -1 for liquid or mg Kg -1 for solid), with four replicates with 16 cuttings each. The characteristics evaluated were rooting (%), root number, longest root length (cm), root volume (cm 3 ) and dry weight of root (g). It was found that the rooting of P. mucronata Lam. does not depend on the way IBA is conveyed, solid or liquid, but the quality of the root system, evaluated by means of the number, volume and dry mass of roots was superior to the one achieved whensolid IBA was used. The behavior of rooting, number and length of roots increased linearly up to the maximum concentration of IBA (1000 mg L -1 or mg Kg -1 ).
“…Das 25 espécies de lianas, 56% pertencem às famílias Bignoniaceae (seis), Malpighiaceae (cinco) e Sapindaceae (três) (tabela 1), que estão entre aquelas de maior riqueza em espécies de lianas em remanescentes da FES na região Sudeste do Brasil (Stranguetti & Ranga 1998, Resende & Ranga 2005, Kinoshita et al 2006, Guaratini et al 2008, Barros et al 2009). Entretanto, em FES localizada em regiões subtropicais, Asteraceae foi a família com a maior riqueza de espécies (Durigon & Waechter 2011).…”
Section: Famílias/espéciesunclassified
“…O número de espécies de lianas encontradas no PFI é inferior ao encontrado em outros estudos, nos quais o número variou entre 35 e 215 espécies (Stranguetti & Ranga 1998, Resende & Ranga 2005, Kinoshita et al 2006, Guaratini et al 2008, Barros et al 2009, Durigon & Waechter 2011. Essa baixa riqueza não era esperada em razão da sazonalidade da região, onde no inverno chove cerca de duas vezes menos que no verão (Bianchini et al 2003(Bianchini et al , 2006.…”
-(Floristic composition of the vascular species and tree flora successional character in a Seasonal Semideciduous Forest remnant in Southern Brazil). The floristic composition of vascular species present in an urban forest remnant in the Ibiporã Forest Park (23°15'71" S and 51°01'83" W, Park entrance), Southern Brazil, was studied from May 2006 to May 2008. The species were divided in life form and tree species were placed in successional categories. A total of 176 native species, 147 genera and 57 families were found. The majority of species were Angiosperms (98%) while 2% were Pteridophyta. The richest families were Fabaceae (19), Bignoniaceae, Malvaceae (nine), Meliaceae and Rubiaceae (eight). The tree species were majority (53%), following by herbaceous (16%), vines (14%), shrubs (13%) and epiphyte species (4%). The successional characterization of the tree species showed a slight predominance of the late secondary species (52%) over species of early succession (45%)
IntroduçãoA fragmentação das florestas reduz a área de cobertura total e promove alterações no ambiente florestal, podendo resultar na extinção imediata de algumas espécies e, ao longo do tempo, expõe os organismos sobreviventes aos efeitos do ambiente alterado, o que se tem denominado de efeito de borda (Murcia 1995). A resposta das espécies é variável, porém alterações na sobrevivência, na estrutura e na distribuição das espécies na comunidade contribuem para a perda da diversidade biológica, tanto diretamente pela redução do estoque de genes e de espécies, como indiretamente, em consequência da quebra das interações ecológicas e da estabilidade dos ecossistemas (Futuyma 1996). O conhecimento da flora e da fauna constitui o ponto de partida para o acompanhamento das alterações temporais que podem orientar ações de manejo das unidades de conservação.Na região norte do Estado do Paraná, o processo de ocupação com a lavoura cafeeira a partir da década de 40 gerou um intenso processo de fragmentação da floresta original, restando atualmente vários fragmentos pequenos e isolados (Campos & Costa Filho 2006
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.