Tropical inselbergs: habitat types, adaptive strategies and diversity patterns

Porembski, S.

doi:10.1590/s0100-84042007000400004

Cited by 216 publications

(294 citation statements)

References 19 publications

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“…As these crusts are active in nitrogen fixation (Büdel et al, 2000(Büdel et al, , 2002(Büdel et al, , 2004Porembski, 2007), they probably facilitate succession by rock-dwelling communities, such as cushions dominated by lichens, bryophytes and monocotyledonous mats such as species of Trilepis Nees and Acianthera Scheidweiler. (Alves and Kolbek, 2000;Safford and Martinelli, 2000).…”

Section: Circumscription and Discussionmentioning

confidence: 99%

Circumscribing campo rupestre – megadiverse Brazilian rocky montane savanas

et al. 2014

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Currently campo rupestre (CR) is a name accepted and used internationally by botanists, zoologists, and other naturalists, usually applied to a very specific ecosystem, despite the lack of a consensual published circumscription. We present a tentative geographic circumscription of the term, combining data on climate, geology, geomorphology, soil, flora, fauna and vegetation. The circumscription of campo rupestre proposed herein is based on the following premises:(1) the classification of vegetation is not an exact science, and it is difficult to attain a high degree of consensus to the circumscription of vegetation names; (2) despite this, vegetation classification is useful for conservation and management. It is thus desirable to circumscribe vegetation types with the greatest attainable precision; (3) there is a need to preserve all montane and rocky vegetation types, regardless of classification, biome, etc; (4) the CRs are formed by a complex mosaic of vegetation types including rock-dwelling, psammophilous, aquatic, epiphytic, and penumbral plant communities. Campos rupestres stricto sensu are a Neotropical, azonal vegetation complex endemic to Brazil, forming a mosaic of rocky mountaintop "archipelagos" inserted within a matrix of zonal vegetation, mainly in the Cerrado and Caatinga provinces of the Brazilian Shield (southeastern, northeastern and central-western regions), occurring mainly above 900 m asl. up to altitudes exceeding 2000 m, having measured annual precipitation between 800 and 1500 mm, and an arid season of two to five months.Keywords: rocky savana, montane savana, rock-dwelling vegetation, biogeographic elements, vegetation classification, Neotropics. Circunscrevendo campo rupestre -savanas montanas rochosas megadiversas do Brasil ResumoAtualmente campo rupestre (CR) é um termo aceito e internacionalmente usado por botânicos, zoólogos e outros naturalistas, geralmente aplicado a um ecossistema muito específico apesar de não haver uma circunscrição de consenso. Nós apresentamos uma ciscunscrição geográfica tentativa do termo, combinando dados de clima, geologia, geomorfologia, solo, flora, fauna e vegetação. A circunscrição de campo rupestre aqui proposta se baseia nas seguintes premissas: (1) a classificação da vegetação não é uma ciência exata e é difícil atingir um alto grau de consenso sobre a circunscrição de nomes de vegetação; (2) apesar disto, a classificação da vegetação é útil para conservação e manejo. Assim é desejável descrever os tipos de vegetação com a maior precisão tangível; exista a necessidade de se preservar todos os tipos de vegetação montanos e rochosos, independentemente de sua classificação, bioma, etc. (4) os CRs são formados por um complexo mosaico de tipos de vegetação incluindo comunidades sobre rocha, psamíóilas, aquáticas, epífitas e penumbrais. Os campos rupestres stricto sensu são um complexo de vegetação endêmico ao Brasil, azonal, Neotropical, inserido numa matriz de vegetação zonal, sobretudo nas províncias do Cerrado e da Caatinga do Escudo do Bra...

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Section: Circumscription and Discussionmentioning

confidence: 99%

Circumscribing campo rupestre – megadiverse Brazilian rocky montane savanas

et al. 2014

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“…Inselbergs form isolated ecosystems possessing strong environmental filters (e.g., total or partial absence of soil, low water retention, nutrient scarcity, difficulty in affixing roots, exposure to wind and heat) that allow these areas to support a highly specialized flora with sometimes high levels of diversity and endemism (Larson et al 2000;Porembski & Barthlott 2000;Porembski 2007). Among the major regions recognized worldwide for this type of vegetation, southeastern Brazil stands out (Porembski 2007).…”

Section: Introductionmentioning

confidence: 99%

Floristic composition of a Neotropical inselberg from Espírito Santo state, Brazil: an important area for conservation

Couto¹,

Francisco²,

Manhães³

et al. 2017

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Our study on granitic and gneissic rock outcrops on Pedra dos Pontões in Espírito Santo state contributes to the knowledge of the vascular flora of inselbergs in southeastern Brazil. We registered 211 species distributed among 51 families and 130 genera. Orchidaceae, Bromeliaceae and Polypodiaceae were the most representative families. Concerning vegetative habit, herbs were predominant and about the preference for substrates, holorupicolous species and epiphytes were most speciose. The richest rocky habitat type was woody thicket, with 122 exclusive species. In total, 27 of the species registered in our study are cited on official lists of endangered plant species from Espírito Santo state and Brazil. In addition, two new records of angiosperms for Espírito Santo flora and two new species were recorded for the area. Our data demonstrates the importance of the area for conservation of unique biodiversity that serves as a sanctuary for a rich rupicolous flora composed of endemic and endangered species, some of which are new to science.

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“…However, the scutum of S. marins n. sp. is less densely haired than that of S. margaritatum and more densely haired than that of S. petropoliense (Pepinelli et al 2006, Hernández et al 2006, 2007. The anal lobe (= paraproct) of S. marins n. sp.…”

Section: Discussionmentioning

confidence: 96%

“…Granitic inselbergs are geologically and geomorphologically old, representing remnants left by erosion processes; they range in elevation from a few to several hundred meters (Coor et al 1993). Occurring over a broad spectrum of climatic zones (Porembski 2007), inselbergs have received considerable attention in recent years because they represent islands of high biotic diversity (Burke 2001). Such areas support a variety of microhabitats, each with its own distinct community (Porembski et al 2000).…”

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confidence: 99%