Florística em um hectare de cerrado stricto sensu na ARIE - cerrado Pé-de-Gigante, Santa Rita do Passa Quatro, SP

Weiser, Veridiana de Lara; Godoy, Silvana Aparecida Pires de

doi:10.1590/s0102-33062001000200007

Cited by 56 publications

(47 citation statements)

References 8 publications

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“…Experimental studies show that light enhances this species germination (Felippe 1990), and under soil nutrient enrichment seedlings of Q. grandiflora invest more into underground than aboveground structures (Paulilo & Felippe 1995), suggesting that Q. grandiflora has better performance in more "open" conditions where light is not limiting. Although the above studies support differences in habitat preferences, Q. grandiflora and V. tucanorum can be found at the same localities (Costa & Araújo 2001;Weiser & Godoy 2001;Silva et al 2002;Gomes et al 2004), which makes them suitable for this comparative study.…”

Section: Study Speciesmentioning

confidence: 87%

Spatial patterns of two co-occurring savanna and forest tree species in a dense fire-protected savanna fragment

Costa

Santos

2016

Acta Bot. Bras.

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Savanna-forest transition under fi re-exclusion could be explained by diff erential competitive performance of savanna and forest species under shading/fi re-exclusion. Aiming to understand strategies related to either habitat affi nity, we investigated spatial patterns of a savanna and a forest species in a fi re-protected savanna. We predicted that: savanna species would have lower abundance than the forest species due to a restriction in the number of open microsites; segregation of size classes and a trend from clumping to regularity with size for forest species due to absence of microsite limitation and intra-specifc competition; and spatial association and increasing clustering with size for savanna species due to microsite limitation. To test these predictions, we described spatial patterns of plants in two size classes in three plots of 0.5 ha. We analyzed spatial patterns and associations of size classes using SADIE methodology. Diff erent from what we expected, both species were more abundant among the studied plots and exhibited an increasing aggregation from small to large size classes. We also found a positive spatial association between size classes of both. Th ese results suggest that both savanna and forest species produce similar spatial patterns independently of habitat affi nity. We discuss the possible processes responsible for the observed patterns.

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Section: Study Speciesmentioning

confidence: 87%

Spatial patterns of two co-occurring savanna and forest tree species in a dense fire-protected savanna fragment

Costa

Santos

2016

Acta Bot. Bras.

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“…12,no. 2 São Paulo: entre 75 e 443 espécies (Batalha & Mantovani 2000, Weiser & Godoy 2001, Durigan et al 2002, Fidelis & Godoy 2003, Meira-Neto et al 2007, Ishara et al 2008, Sasaki & Melo-Silva 2008. Os fatores que possivelmente contribuem para essa elevada riqueza são os mesmos considerados acima com respeito à flora da Estação como um todo.…”

Section: Discussionunclassified

“…Levantamentos em cerrado (s.l.) apontaram as famílias Asteraceae, Myrtaceae, Fabaceae, Malpighiaceae, Bignoniaceae, Melastomataceae, Rubiaceae, Vochysiaceae, Poaceae e Annonaceae como as mais ricas (Durigan et al 1999, Batalha & Mantovani 2000, Weiser & Godoy 2001, Durigan et al 2002, Fidelis & Godoy 2003, Meira-Neto et al 2007, Ishara et al 2008, Sasaki e Melo-Silva 2008. Das famílias supracitadas, a maioria é bem representada em número de espécies na EEcI.…”

Section: Discussionunclassified

“…As famílias mais ricas do componente não-arbóreo da Estação foram mencionadas entre as mais representativas nos levantamentos de cerrado (s.l.) que consideraram esse componente individualmente (Christianini & Cavassan 1998, Batalha & Mantovani 2001, Weiser & Godoy 2001, Tannus & Assis 2004, Ishara et al 2008, Rossatto et al 2008. Da mesma forma, a distribuição da riqueza de espécies arbóreas entre as famílias concorda em geral com as informações da literatura sobre o cerrado (s.l.)…”

Section: Discussionunclassified

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Aspectos florísticos da Estação Ecológica de Itapeva, SP: uma unidade de conservação no limite meridional do bioma Cerrado

et al. 2012

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Abstract:The Itapeva Ecological Station -EEcI (24° 04' S and 49° 04' W, altitude 750 m), Itapeva, São Paulo State, is a Protected Area (PA) predominantly covered by cerrado denso and cerradão, whose occurrence in the region represents the southern limit of distribution of cerrado sensu lato. Aiming to know the regional flora and assuming the existence of floristic peculiarities due to the local weather conditions (incidence of frosts and absence of water deficit), we conducted a floristic survey in this PA from February 2008 to May 2010 and recorded 437 species in seven different physiognomies. In the cerrado sensu lato physiognomies, 346 species, distributed among 87 families and 220 genera, were found. The richest families were Asteraceae (31 species), Fabaceae (27), Myrtaceae (26), Melastomataceae (21), Rubiaceae (15), Lauraceae (12), Bignoniaceae (11) and Poaceae (10). Concerning richness and family representativeness, the EEcI flora does not differ from that of other cerrado sensu lato remnants at lower latitudes. However, frequent species in those remnants -Dimorphandra mollis, Xylopia aromatica, Eugenia aurata and Tocoyena formosa -were not found in the study area region, probably due to frost effects and other limiting climatic factors. On the other hand, geographical distribution models did not predict the occurrence of Annona dioica, Brosimum gaudichaudii, Duguetia furfuracea, Anadenanthera peregrina var. falcata, Caryocar brasiliense and Schefflera vinosa for the region of Itapeva, possibly due to the absence of water deficit. The floristic data obtained in this study may assist in the parameterization of these models. The floristic similarity observed between the physiognomic extremes of the cerrado sensu lato in the EEcI: cerradão and cerrado ralo, 26%, was smaller than the floristic similarity between the swamp grassland physiognomy and the cerrado ralo (27%), and between the former and the cerrado denso (30%). Therefore, considering floristic composition as one of the defining aspects of vegetation type, the swamp grassland can be included in the delimitation of cerrado sensu lato in the EEcI. We recorded eight species threatened with extinction. Due to the PA's small dimensions, we suggest the expansion of its area for a more effective conservation of these species' populations.

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“…The Miconia species fructify asynchronously in a complementary form (Snow, 1965;Maruyama et al, 2007;Borges, 2010;Leiner et al, 2010), presenting small fruit, a kind of berry, generally with numerous small seeds. This genus can be found in the Cerrado with several phytophysiognomies (Weiser and Godoy, 2001;Araújo et al, 2002;Cardoso et al, 2002;Guimarães et al, 2002;Assunção and Felfili, 2004;Gomes et al, 2004;Campos et al, 2006;Silva-Júnior and Sarmento 2009), being common in secondary vegetation (Araújo et al, 1997;Silva-Júnior and Sarmento 2009).…”

Section: Introductionmentioning

confidence: 99%

Frugivory and seed dispersal of Miconia theaezans (Bonpl.) Cogniaux (Melastomataceae) by birds in a transition palm swamp: gallery forest in Central Brazil

Melo

2012

Braz. J. Biol.

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The objective of this study was to evaluate potential avian dispersers of Miconia theaezans by dietary habits in the Cerrado of Central Brazil. Forty-two hours and 40 minutes of focal tree observation were conducted between 7:00 AM and 5:00 PM. For each bird species that consumed the fruit, we registered: the time they remained on the plant, the total amount of fruit they consumed, foraging tactics and strategies to consume the fruit. Five-hundred and fifty-nine units of fruit were consumed in 47 visits by seven bird species. Thraupidae was the most frequent and representative family and Tangara cayana was the main consumer. The Tachyphonus rufus had the highest rate of intake of the entire fruit, however the rates were not significantly different among the visitors. The most-used foraging tactic by all species was to consume the fruit while "perched" (95.74% of the visits). The most commonly-used consumption strategy was to mandibulate the fruit and swallow all the contents (65.12%). Omnivores were the predominant visitors (71.43%) and made most of the visits (89.36%). All visiting species could act as potential dispersers of M. theaezans, which demonstrates the low selectiveness of this pioneer plant towards its frugivorous.Keywords: fruits, pioneer species, birds, cerrado. Frugivoria e dispersão de sementes de Miconia theaezans (Bonpl.) Cogniaux (Melastomataceae) por aves em uma transição Vereda -Mata de galeria no Brasil CentralResumo O objetivo deste trabalho foi avaliar, através do comportamento alimentar, as aves potencialmente dispersoras de Miconia theaezans no Cerrado do Brasil Central. Foram realizadas 42 horas e 40 minutos de observações árvore-focal, entre 07:00 e 17:00 horas. Foram registrados para cada espécie de ave consumidora de frutos: tempo de permanência na planta, total de frutos consumidos, tática de forrageio e estratégia de consumo dos frutos. Foram consumidos 559 frutos em 47 visitas, por sete espécies de aves. Thraupidae foi a família mais representativa e frequente e Tangara cayana foi o principal consumidor. A maior taxa de consumo de frutos inteiros foi encontrada para Tachyphonus rufus, porém não foi significativamente diferente entre os visitantes. A tática de forrageamento mais utilizada no consumo dos frutos de todas as espécies foi "empoleirado" (95,74% das visitas). A estratégia de consumo mais utilizada foi mandibular o fruto e engolir todo o conteúdo (65,12%). Houve predominância de onívoros em termos de visitantes (71,43%) e visitas (89,36%). Todas as espécies visitantes podem atuar como potenciais dispersoras de M. theaezans, demonstrando a baixa seletividade desta planta pioneira em relação aos seus frugívoros.Palavras-chave: frutos, espécies pioneiras, aves, cerrado.

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Florística em um hectare de cerrado stricto sensu na ARIE - cerrado Pé-de-Gigante, Santa Rita do Passa Quatro, SP

Cited by 56 publications

References 8 publications

Spatial patterns of two co-occurring savanna and forest tree species in a dense fire-protected savanna fragment

Spatial patterns of two co-occurring savanna and forest tree species in a dense fire-protected savanna fragment

Aspectos florísticos da Estação Ecológica de Itapeva, SP: uma unidade de conservação no limite meridional do bioma Cerrado

Frugivory and seed dispersal of Miconia theaezans (Bonpl.) Cogniaux (Melastomataceae) by birds in a transition palm swamp: gallery forest in Central Brazil

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