Novos registros em Tillandsia L. (Bromeliaceae, Tillandsioideae) para o Rio Grande do Sul, Brasil

Büneker, Henrique Mallmann; Pontes, Rodrigo Corrêa; Witeck-Neto, Leopoldo

doi:10.1590/2175-7860201566216

Cited by 5 publications

(5 citation statements)

References 4 publications

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“…In this region, Büneker et al . (2015) registered T. bandensis only as a lithophyte species. We also observed that only T. tricholepis extends from the westernmost to the northern coastal plain, as Winkler (1980) and Gonçalves and Waechter (2003) noted.…”

Section: Discussionmentioning

confidence: 99%

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

2022

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Metacommunity ecology investigates how drivers of regional and local scales cause compositional variation in a network of communities potentially linked by dispersal. We examined the metacommunity structure of epiphytic bromeliad assemblages along a coastal-inland gradient in a subtropical geographic corridor extending from the Atlantic coast to near the Uruguay River, in the central depression of Rio Grande do Sul State, in southernmost Brazil. We surveyed floristic and environmental data on a sequence of 71 testimonial hills. We used elements of metacommunity structure to identify metacommunity patterns (i.e. random, checkerboard, nested, Clementsian, Gleasonian, evenly spaced and quasi-structured). We ran a canonical correspondence analysis to evaluate how coastal-inland gradient influenced species distribution. Finally, we employed variation partitioning to determine archetype-based metacommunity structuring processes (i.e. species sorting, neutral dynamics, patch dynamics and mass effects). We found that temperature-and moisture-based gradients generated environmental heterogeneity that established species filtering, determining the formation of cohesive groups of epiphytic bromeliads with coincidentally occurring boundaries (i.e. quasi-Clementsian structure). As a result, we identified four metacommunity structures embedded along the coastal-inland gradient: In the eastern and east-central metacommunities, species distributions were idiosyncratic due to individual species' responses to environmental gradients (i.e. quasi-Gleasonian structure), and in the western and west-central metacommunities, we observed Clementsian and Gleasonian structures, respectively. Habitat heterogeneity and dispersal sufficiency (i.e. species sorting archetype) were the foremost drivers establishing metacommunity structures. Ultimately, and surprisingly, in the east-central metacommunity, we detected source-sink dynamics among the testimonial hills (i.e. mass effects archetype). Our findings suggest that epiphytic bromeliad assemblages are linked to a gradient-driven pattern with moderate heterogeneity (i.e. low turnover) and identify four embedded metacommunity structures. Moreover, they indicate that the species sorting archetype best represents the processes of establishing metacommunity structures.

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Section: Discussionmentioning

confidence: 99%

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

2022

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“…Nestas encostas, pequenos capões de mata se desenvolvem formando ambientes para espécies de caráter florestal como Anemia phyllitidis (figura 5e), Blechnum polypodioides (figura 2i), Adiantum raddianum (figura 5f) e Adiantopsis perfasciculata (figura 5c). Em angiospermas, novas ocorrências e espécies novas têm sido descritas com frequência para estas áreas, em vários grupos taxonômicos como Asteraceae (Mondin 2007), Bromeliaceae (Büneker et al 2015) e Poaceae (Welker & Longhi-Wagner 2012).…”

Section: Discussionunclassified

Samambaias e licófitas dos Cerros do Tigre e Palomas, província biogeográfica do Pampa, Estado do Rio Grande do Sul, Brasil

Lehn

Gonzatti

Arana

2020

Hoehnea

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RESUMO O Pampa representa um dos domínios fitogeográficos de maior riqueza florística da América do Sul; no entanto, principalmente ao que refere às samambaias e licófitas, ainda é muito pouco conhecido. O presente estudo tem como objetivos listar as espécies de samambaias e licófitas associadas aos cerros do Tigre e Palomas e discutir os aspectos florísticos que modelam a flora de samambaias e licófitas nas formações isoladas (Cerros) do domínio do Pampa. As amostras foram coletadas e herborizadas por meio das técnicas usuais, e identificadas com auxílio de literatura específica. Espécimes de herbários também foram analisados a fim de complementar a lista florística. As espécies foram classificadas quanto seu padrão de distribuição geográfica e quanto sua forma de vida e crescimento. O inventário resultou em 36 espécies, sendo quatro licófitas e 32 samambaias, distribuídas em 11 famílias e 19 gêneros. Ao todo, 18 espécies foram exclusivas ao Cerro do Tigre, cinco ao Cerro Palomas e 13 ocorreram em ambas as áreas. A maior parte das espécies tem ampla distribuição na América do Sul (41,02%) e América Tropical (35,89%), e não foram identificadas espécies endêmicas ao domínio pampeano. A forma de vida predominante foi hemicriptófito e a forma de crescimento, o rosulado foi a mais frequente. De forma geral as espécies ocorrentes na área de estudo apresentaram adaptações às condições xerofíticas. Nossos resultados mostraram haver alta riqueza de espécies nas áreas estudadas em relação ao citado para o domínio, e que os Cerros servem como refúgios para manutenção da flora de samambaias e licófitas na região.

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“…Tillandsia loliacea has a wide distribution, occurring in Argentina, Bolivia, Brazil, Paraguay, and Peru (Smith and Downs 1977). In Brazil, this species occurs in the states of Alagoas, Bahia, Ceará, Espírito Santo, Federal District, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Paraíba, Paraná, Pernambuco, Piauí, Rio Grande do Norte, Rio Grande do Sul, São Paulo and Sergipe, in Deciduous and Semideciduous Seasonal Forests, and in the forests located in the Pampa, Caatinga (stricto sensu), and Cerrado biomes (Büneker et al 2015, Flora do Brasil 2018. According to Fiorato (2009), T. loliacea occurs in rupestrian fields and Caatinga in northeastern Brazil, with epiphytic or rupicolous habit.…”

Section: Discussionmentioning

confidence: 99%

New records of Tillandsia L. (Bromeliaceae, Tillandsioideae) for Maranhão state, Brazil

Guarçoni¹,

Costa²,

Silva³

et al. 2018

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Novos registros em Tillandsia L. (Bromeliaceae, Tillandsioideae) para o Rio Grande do Sul, Brasil

Cited by 5 publications

References 4 publications

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

Samambaias e licófitas dos Cerros do Tigre e Palomas, província biogeográfica do Pampa, Estado do Rio Grande do Sul, Brasil

New records of Tillandsia L. (Bromeliaceae, Tillandsioideae) for Maranhão state, Brazil

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Novos registros em Tillandsia L. (Bromeliaceae, Tillandsioideae) para o Rio Grande do Sul, Brasil

Cited by 5 publications

References 4 publications

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

Patterns and metacommunity processes of epiphytic bromeliad assemblages along a coastal‐inland gradient in a subtropical Brazilian geographic corridor

Samambaias e licófitas dos Cerros do Tigre e Palomas, província biogeográfica do Pampa, Estado do Rio Grande do Sul, Brasil

New records of Tillandsia L. (Bromeliaceae, Tillandsioideae) for Maranh&atilde;o state, Brazil

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New records of Tillandsia L. (Bromeliaceae, Tillandsioideae) for Maranhão state, Brazil